CIEN / Ciena Corporation - SEC-Einreichungen, Jahresbericht, Proxy Statement

Ciena Corporation
US ˙ NYSE ˙ US1717793095

Basisstatistiken
LEI W0CZ7N0GH8UIGXDM1H41
CIK 936395
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Ciena Corporation
SEC Filings (Chronological Order)
Auf dieser Seite finden Sie eine vollständige, chronologische Liste der SEC-Einreichungen, mit Ausnahme der Eigentumseinreichungen, die wir an anderer Stelle bereitstellen.
June 4, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 2, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corpor

June 4, 2026 EX-99.1

Ciena Reports Fiscal Second Quarter 2026 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2026 Financial Results Summary •Fiscal second quarter 2026 revenue was $1.

June 4, 2026 EX-99.2

© Ciena Corporation 2026. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2026 Earnings Presentation Period ended May 2, 2026 June 4, 2026 © Ciena Corporation 2026. All rights reserved. Proprietary Information.2 Forward-look

ex9922026q2earningsprese © Ciena Corporation 2026. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2026 Earnings Presentation Period ended May 2, 2026 June 4, 2026 © Ciena Corporation 2026. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely po

June 4, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 4, 2026 Ciena Corporation (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 4, 2026 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

May 28, 2026 EX-1.01

Ciena Corporation Conflict Minerals Report

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2025 to December 31, 2025 This Conflict Minerals Report (this “Report”) of Ciena Corporation (“Ciena” or “we”) has been prepared pursuant to Rule 13p-1 (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2025 to December 31, 2025. The

May 28, 2026 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission file number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address of principal executive o

March 31, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 26, 2026 Ciena Corporation (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 26, 2026 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 5, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena C

March 5, 2026 EX-99.1

Ciena Reports Fiscal First Quarter 2026 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2026 Financial Results Summary •Fiscal first quarter 2026 revenue was $1.

March 5, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 5, 2026 Ciena Corporation (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 5, 2026 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 5, 2026 EX-99.2

© Ciena Corporation 2026. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2026 Earnings Presentation Period ended January 31, 2026 March 5, 2026 © Ciena Corporation 2026. All rights reserved. Proprietary Information.2 Forwar

ex9922026q1earningsprese © Ciena Corporation 2026. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2026 Earnings Presentation Period ended January 31, 2026 March 5, 2026 © Ciena Corporation 2026. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routin

February 12, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

February 12, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

February 12, 2026 ARS

ARS

Annual Report 2025Ciena Leadership ÀíÚØêéÞëÚÊĝØÚçè ÂÖçî½ÎâÞéÝ 3UHVLGHQW&KLHI([HFXWLYH2ƱFHU and Director ÈÖçØ¿ÂçÖĚ Senior Vice President and &KLHI)LQDQFLDO2ƱFHU ÅäÚ¾êâÚááä Senior Vice President and General Manager of Blue Planet ¿Þãä¿ÞËÚçãÖ Senior Vice President, Global Research and Development ½çäÙÞÚÂÖÜÚ Senior Vice President, Global Products and Supply Chain ÎÝÚÚáÖÆäèÖçÖßê Seni

December 12, 2025 EX-10.31

CIENA CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT

CIENA CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT This Change in Control Severance Agreement (the “Agreement”) is made by and between Ciena Corporation, a Delaware corporation, and Gary B.

December 12, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended November 1, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 12, 2025 EX-10.5

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.

December 12, 2025 EX-10.32

CIENA CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT

CIENA CORPORATION CHANGE IN CONTROL SEVERANCE AGREEMENT This Change in Control Severance Agreement (the “Agreement”) is made by and between Ciena Corporation, a Delaware corporation, and <> (the “Executive”), and shall become effective on November 30, 2025.

December 12, 2025 EX-21.1

Jurisdiction of Incorporation or Organization

EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Canada ULC Canada Ciena Switzerland GMBH Switzerland Ciena Global Holding, LP United Kingdom Ciena Global Products Company, Ltd United Kingdom Ciena Limited United Kingdom

December 11, 2025 EX-99.2

© Ciena Corporation 2025. ll rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 2025 Earnings Presentation Period ended November 1, 2025 December 11, 2025 2 © Ciena Corporation 2025. All rights reserved. Proprietary Information. Fo

ex9922025q4earningsprese © Ciena Corporation 2025. ll rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 2025 Earnings Presentation Period ended November 1, 2025 December 11, 2025 2 © Ciena Corporation 2025. All rights reserved. Proprietary Information. Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we ro

December 11, 2025 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2025 and Year-End Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2025 and Year-End Financial Results Summary •Fiscal fourth quarter 2025 revenue was $1.

December 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 11, 2025 Ciena Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 11, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

December 4, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 30, 2025 Ciena Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 30, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

October 7, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 7, 2025 Ciena Corporation (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 7, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

October 1, 2025 144

144

144 0001699193 XXXXXXXX LIVE 0000936395 CIENA CORPORATION 001-36250 7035 RIDGE ROAD HANOVER MD 21076 (410) 694-5700 JASON PHIPPS Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 1984 284545.

October 1, 2025 144

144

144 0001963781 XXXXXXXX LIVE 0000936395 CIENA CORPORATION 001-36250 7035 RIDGE ROAD HANOVER MD 21076 (410) 694-5700 SHEELA KOSARAJU Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 1747 250554.

September 26, 2025 144

144

144 0001963638 XXXXXXXX LIVE 0000936395 Ciena Corporation 001-36250 7035 Ridge Road Hanover MD 21076 4106945700 JOSEPH CUMELLO Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 1863 255547.

September 24, 2025 144

144

144 0001403694 XXXXXXXX LIVE 0000936395 CIENA CORPORATION 001-36250 7035 RIDGE ROAD HANOVER MD 21076 (410) 694-5700 Bruce Claflin Director Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 8461 1185555.

September 22, 2025 EX-99.1

Ciena to Acquire Nubis Communications to Expand its Inside the Data Center Strategy and Further Address Growing AI Workloads

FOR IMMEDIATE RELEASE Ciena to Acquire Nubis Communications to Expand its Inside the Data Center Strategy and Further Address Growing AI Workloads Hanover, Md.

September 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 22, 2025 Ciena Corporatio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 22, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 15, 2025 144

144

144 0001444157 XXXXXXXX LIVE 0000936395 CIENA CORP 001-36250 7035 Ridge Road Hanover MD 21076 4106945700 DAVID ROTHENSTEIN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 2500 328200.

September 15, 2025 144

144

144 0001998826 XXXXXXXX LIVE 0000936395 CIENA CORPORATION 001-36250 7035 RIDGE ROAD HANOVER MD 21076 (410) 694-5700 BRODIE GAGE Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004 350 46200.

September 4, 2025 EX-99.2

© Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q3 2025 Earnings Presentation Period ended August 2, 2025 September 4, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forw

ex9922025q3earningsprese © Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q3 2025 Earnings Presentation Period ended August 2, 2025 September 4, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we rout

September 4, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 4, 2025 Ciena Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 4, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 4, 2025 EX-99.1

Ciena Reports Fiscal Third Quarter 2025 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2025 Financial Results HANOVER, Md.

September 4, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended August 2, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 18, 2025 EX-99.1

Ciena Appoints Marc D. Graff as Senior Vice President and Chief Financial Officer

FOR IMMEDIATE RELEASE Ciena Appoints Marc D. Graff as Senior Vice President and Chief Financial Officer HANOVER, Md. – June 18, 2025 – Ciena® Corporation (NYSE: CIEN), the global leader in high-speed connectivity, today announced the appointment of Marc D. Graff as Senior Vice President and Chief Financial Officer (CFO) effective August 1, 2025. Reporting to President and CEO Gary B. Smith as a me

June 18, 2025 EX-10.1

Annex A Overview of Applicable Relocation Benefits

Ciena Corporation 7035 Ridge Road Hanover, Maryland 21076 www.ciena.com June 6, 2025 Marc D. Graff 17980 SW Snowberry Court Sherwood, Oregon 97140 Dear Marc, On behalf of the entire leadership team and the Board of Directors, it is with great enthusiasm that we extend this offer to you to join Ciena as our next Chief Financial Officer. It is our people that help make Ciena a great place to work an

June 18, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 18, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

June 5, 2025 EX-99.1

Ciena Reports Fiscal Second Quarter 2025 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2025 Financial Results HANOVER, Md.

June 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 3, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 5, 2025 EX-99.2

© Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2025 Earnings Presentation Period ended May 3, 2025 June 5, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forward-look

ex9922025q2earningsprese © Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2025 Earnings Presentation Period ended May 3, 2025 June 5, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely po

June 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 5, 2025 Ciena Corporation (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 5, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission file number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address of principal executive o

May 30, 2025 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2024 to December 31, 2024 This Conflict Minerals Report (this “Report”) of Ciena Corporation (“Ciena” or “we”) has been prepared pursuant to Rule 13p-1 (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2024 to December 31, 2024. The

April 1, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 27, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 1, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

March 11, 2025 EX-99.1

Ciena Reports Fiscal First Quarter 2025 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2025 Financial Results HANOVER, Md.

March 11, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 11, 2025 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 11, 2025 EX-99.2

© Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2025 Earnings Presentation Period ended February 1, 2025 March 11, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forwa

© Ciena Corporation 2025. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2025 Earnings Presentation Period ended February 1, 2025 March 11, 2025 © Ciena Corporation 2025. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely post press releases,

February 13, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

February 13, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

February 13, 2025 ARS

ARS

7035 Ridge Road Hanover, MD 21076 (800) 921 1 144 (410) 694 5700 ciena.com Annual Report 2024Shareholder Information Notes to Investors The Annual Report contains certain forward-looking statements regarding future events or results that involve risks and uncertainties. These statements are based on current expectations, forecasts, assumptions and other information available to Ciena as of the dat

January 21, 2025 EX-10.1

Refinancing Amendment to Credit Agreement, dated January 17, 2025, by and among Ciena Corporation, Ciena Communications, Inc., Ciena Government Solutions, Inc., Ciena Communications International, LLC, Blue Planet Software, Inc., Bank of America, N.A., as administrative agent, and the lenders party thereto.

Exhibit 10.1 Execution Version REFINANCING AMENDMENT TO CREDIT AGREEMENT REFINANCING AMENDMENT TO CREDIT AGREEMENT, dated as of January 17, 2025 (this “Amendment”), by and among Ciena Corporation, a Delaware corporation (the “Borrower”), the other Loan Parties party hereto, the Refinancing Term Lenders (as defined below) (which constitute the Required Lenders) and Bank of America, N.A., as adminis

January 21, 2025 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 17, 2025 Ciena Corporation (Exact Name of Registrant as Specified in Its Charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

December 20, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended November 2, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 20, 2024 EX-10.5

Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2024)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.

December 20, 2024 EX-21.1

Subsidiaries of registrant

EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Canada ULC Canada Ciena Switzerland GMBH Switzerland Ciena Global Holding, LP Scotland

December 20, 2024 EX-19.1

Ciena Corporation Insider Trading Policy

Ciena Corporation Insider Trading Policy Rev. D (February 2023) Purpose We are entrusted with a great deal of sensitive information at Ciena. Our goal is to ensure that access to this information is used to perform our jobs, understand our business and financial performance and promote our strategy. Our culture thrives on this sense of a shared mission and we intend to keep it that way. Because of

December 12, 2024 EX-3.1

Amended and Restated Bylaws of Ciena Corporation

AMENDED AND RESTATED BYLAWS OF CIENA CORPORATION (Amended and Restated December 11, 2024) ARTICLE I Stockholders Section 1.

December 12, 2024 EX-99.2

© Ciena Corporation 2024. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 2024 Earnings Presentation Period ended November 2, 2024 December 12, 2024 © Ciena Corporation 2024. All rights reserved. Proprietary Information.2 Fo

EX-99.2 4 ex9922024q4earningsprese.htm EX-99.2 © Ciena Corporation 2024. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 2024 Earnings Presentation Period ended November 2, 2024 December 12, 2024 © Ciena Corporation 2024. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of ou

December 12, 2024 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 a8-k2024q4earningsresults.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 12, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or o

December 12, 2024 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2024 Financial Results

EX-99.1 3 ex9912024q4earningspressre.htm EX-99.1 FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2024 Financial Results HANOVER, Md. - December 12, 2024 - Ciena® Corporation (NYSE: CIEN), a networking systems, services and software company, today announced unaudited financial results for its fiscal fourth quarter ended November 2, 2024. •Q4 Revenue: $1.12 billion •Q4 Net Income per Share

December 12, 2024 EX-99.3

Ciena Announces Lawton W. Fitt as Independent Chair of Board of

EX-99.3 5 ex993pressrelease241212.htm EX-99.3 FOR IMMEDIATE RELEASE Ciena Announces Lawton W. Fitt as Independent Chair of Board of Directors HANOVER, Md. – December 12, 2024 – Ciena® Corporation (NYSE: CIEN) announced the appointment of Lawton W. Fitt as independent Chair of Ciena's Board of Directors, effective December 11, 2024. Concurrently, Patrick H. Nettles, Ph.D., stepped down as Executive

November 12, 2024 SC 13G/A

CIEN / Ciena Corporation / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.4 CIENA CORP COMMON STOCK Cusip #171779309 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #171779309 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 21,652,221 Item 6: 0 Item 7: 21,664,064 Item 8: 0 Item 9: 21,664

October 2, 2024 EX-99.1

Ciena Announces $1 Billion Share Repurchase Authorization

FOR IMMEDIATE RELEASE Ciena Announces $1 Billion Share Repurchase Authorization HANOVER, Md.

October 2, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 2, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 4, 2024 EX-99.2

© Ciena Corporation 2024. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q3 2024 Earnings Presentation Period ended July 27, 2024 September 4, 2024 © Ciena Corporation 2024. All rights reserved. Proprietary Information.2 Forwa

© Ciena Corporation 2024. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q3 2024 Earnings Presentation Period ended July 27, 2024 September 4, 2024 © Ciena Corporation 2024. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely post press releases,

September 4, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 4, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 4, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 27, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

September 4, 2024 EX-99.1

Ciena Reports Fiscal Third Quarter 2024 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2024 Financial Results HANOVER, Md.

September 4, 2024 EX-99.3

Ciena CFO James E. Moylan to Retire in August 2025

FOR IMMEDIATE RELEASE Ciena CFO James E. Moylan to Retire in August 2025 September 4, 2024 – Ciena® Corporation (NYSE: CIEN) today announced that James E. Moylan, Jr., Senior Vice President and Chief Financial Officer (CFO), plans to retire in twelve months, effective August 28, 2025. Ciena intends to commence a search process to identify a successor. Mr. Moylan will continue to serve as CFO until

June 6, 2024 EX-99.2

© Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2024 Earnings Presentation Period ended April 27, 2024 June 6, 2024 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2 Forward-l

ex9922024q2earningsprese © Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q2 2024 Earnings Presentation Period ended April 27, 2024 June 6, 2024 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely

June 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 27, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 6, 2024 EX-3.1

Fifth Restated Certificate of Incorporation of Ciena Corporation, filed with the Secretary of State of Delaware on June 4, 2024

FIFTH RESTATED CERTIFICATE OF INCORPORATION OF CIENA CORPORATION Ciena Corporation, a corporation organized and existing under the laws of the state of Delaware, hereby certifies as follows: 1.

June 6, 2024 EX-99.1

Ciena Reports Fiscal Second Quarter 2024 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2024 Financial Results HANOVER, Md.

June 6, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 6, 2024 Ciena Corporation (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 6, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

May 30, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission file number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address of principal executive o

May 30, 2024 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2023 to December 31, 2023 This Conflict Minerals Report (this “Report”) of Ciena Corporation (“Ciena” or “we”) has been prepared pursuant to Rule 13p-1 (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2023 to December 31, 2023. The

April 23, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 22, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

April 18, 2024 S-8

As filed with the Securities and Exchange Commission on April 18, 2024

As filed with the Securities and Exchange Commission on April 18, 2024 Registration No.

April 18, 2024 EX-FILING FEES

Filing Fee Table

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Ciena Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(2) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity  Common Stock, par value $0.

March 26, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 21, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 26, 2024 EX-10.1

Amendment No. 2 to Ciena Corporation 2017 Omnibus Incentive Plan*, effective as of March 21, 2024

AMENDMENT NO. 2 TO CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN THIS AMENDMENT NO. 2 (this “Amendment”) to the Ciena Corporation 2017 Omnibus Incentive Plan (the “Plan”), which (i) increases the number of shares available for issuance under the Plan by ten million, one hundred thousand (10,100,000) shares and (ii) to increase the recoupment period for misconduct relating to accounting restatement

March 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 27, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

March 7, 2024 EX-99.2

© Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2024 Earnings Presentation Period ended January 27, 2024 March 7, 2024 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2 Forwar

© Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q1 2024 Earnings Presentation Period ended January 27, 2024 March 7, 2024 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we routinely post press releases,

March 7, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 7, 2024 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 7, 2024 EX-99.1

Ciena Reports Fiscal First Quarter 2024 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2024 Financial Results HANOVER, Md.

February 13, 2024 SC 13G/A

CIEN / Ciena Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0604-cienacorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: Ciena Corp Title of Class of Securities: Common Stock CUSIP Number: 171779309 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule purs

February 12, 2024 SC 13G/A

CIEN / Ciena Corporation / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.3 CIENA CORP COMMON STOCK Cusip #171779309 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #171779309 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 14,719,402 Item 6: 0 Item 7: 14,726,348 Item 8: 0 Item 9: 14,726

February 9, 2024 SC 13G/A

CIEN / Ciena Corporation / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.2 CIENA CORP COMMON STOCK Cusip #171779309 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #171779309 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 11,311,479 Item 6: 0 Item 7: 11,317,654 Item 8: 0 Item 9: 11,317

February 8, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant  ☒ Filed by a Party other than the Registrant  ☐ Check the a

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant  ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ De

February 8, 2024 ARS

ARS

1 Ciena Leadership Patrick H. Nettles, Ph.D. Executive Chairperson of the Board of Directors Gary B. Smith 3UHVLGHQW&KLHI([HFXWLYH2ƱFHU and Director James E. Moylan, Jr Senior Vice President &KLHI)LQDQFLDO2ƱFHU Joseph R. Cumello Senior Vice President and General Manager of Blue Planet Brodie Gage Senior Vice President, Global Products and Supply Chain Sheela Kosaraju Senior Vice President an

February 8, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

January 30, 2024 SC 13G/A

CIEN / Ciena Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us1717793095013024.txt us1717793095013024.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

January 29, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

December 15, 2023 EX-97.1

Ciena Corporation Executive Compensation Clawback Policy

EXHIBIT 97.1 CIENA CORPORATION EXECUTIVE COMPENSATION CLAWBACK POLICY 1.Purpose. The purpose of this Policy is to set forth the circumstances under which Executive Officers of the Company will be required to repay or return certain Excess Awarded Compensation to one or more members of the Company Group. The Board of Directors has adopted this Policy in accordance with the Clawback Rule and the Lis

December 15, 2023 EX-21.1

Subsidiaries of registrant

EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Global Products Company, LTD United Kingdom Ciena Canada ULC Canada Ciena Switzerland GMBH Switzerland Ciena Global Holding, LP Scotland

December 15, 2023 EX-10.3

Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2023)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.

December 15, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 28, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 7, 2023 EX-99.2

© Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 and 2023 Earnings Presentation Period ended October 28, 2023 December 7, 2023 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2

ex9922023q4earningsprese © Ciena Corporation 2023. All rights reserved. Proprietary Information. Ciena Corporation Fiscal Q4 and 2023 Earnings Presentation Period ended October 28, 2023 December 7, 2023 © Ciena Corporation 2023. All rights reserved. Proprietary Information.2 Forward-looking statements and non-GAAP measures You are encouraged to review the Investors section of our website, where we

December 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 7, 2023 Ciena Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 7, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

December 7, 2023 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2023 Financial Results Annual revenue increased 21%

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2023 Financial Results Annual revenue increased 21% HANOVER, Md.

October 25, 2023 EX-10.1

Incremental Amendment Agreement, dated October 24, 2023, by and among Ciena Corporation, Ciena Communications, Inc., Ciena Government Solutions, Inc., Ciena Communications International, LLC, Blue Planet Software, Inc., Bank of America, N.A., as administrative agent, and the lenders party thereto.++

Exhibit 10.1 Execution Version INCREMENTAL AMENDMENT AGREEMENT INCREMENTAL AMENDMENT AGREEMENT, dated as of October 24, 2023 (this “Amendment”), by and among Ciena Corporation, a Delaware corporation (the “Borrower”), the other Loan Parties party hereto, the New 2023 Incremental Term Lenders (as defined below), the Revolving Credit Lenders (as defined below), the L/C Issuers (as defined below), th

October 25, 2023 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 24, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorpo

October 3, 2023 EX-99.1

Ciena Appoints Dino DiPerna and Brodie Gage to Executive Leadership Team

FOR IMMEDIATE RELEASE Ciena Appoints Dino DiPerna and Brodie Gage to Executive Leadership Team HANOVER, Md.

October 3, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 2, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 6, 2023 EX-10.1

Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.

September 6, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 29, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

September 6, 2023 EX-10.2

Form of Performance Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2023)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN PERFORMANCE STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants performance stock units relating to shares of its common stock, $0.

September 6, 2023 EX-10.3

Form of Market Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2023)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN MARKET STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants market stock units relating to shares of its common stock, $0.

September 6, 2023 EX-10.4

Ciena Corporation Amended and Restated Incentive Bonus Plan, as amended August 22, 2023*

CIENA CORPORATION INCENTIVE BONUS PLAN (Amended and Restated as of August 22, 2023) 1.

August 31, 2023 EX-99.3

Ciena Appoints Mary G. Puma to Board of Directors

FOR IMMEDIATE RELEASE Ciena Appoints Mary G. Puma to Board of Directors HANOVER, Md. – August 31, 2023 – Ciena (NYSE: CIEN) today announced that Mary G. Puma has been appointed to its Board of Directors, effective immediately. Ms. Puma previously served as President and Chief Executive Officer of Axcelis Technologies, Inc., a publicly held company engaged in the supply of capital equipment for the

August 31, 2023 EX-99.2

© Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended July 29, 2023 August 31, 2023 Earnings Presentation 2© Ciena Corporation 2023. All rights reserved. Proprietary information. Forward-looking statem

© Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended July 29, 2023 August 31, 2023 Earnings Presentation 2© Ciena Corporation 2023. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-looking statements. These s

August 31, 2023 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): August 31, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

August 31, 2023 EX-99.1

Ciena Reports Fiscal Third Quarter 2023 Financial Results Revenue increased 23% year-over-year

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2023 Financial Results Revenue increased 23% year-over-year HANOVER, Md.

June 9, 2023 SC 13G/A

CIEN / CIENA Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Ciena Corp. Title of Class of Securities: Common Stock CUSIP Number: 171779309 Date of Event Which Requires Filing of this Statement: May 31, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(

June 7, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 29, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 7, 2023 EX-10.2

Form of Director Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.

June 6, 2023 EX-99.1

Ciena Reports Fiscal Second Quarter 2023 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2023 Financial Results HANOVER, Md.

June 6, 2023 EX-99.2

© Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended April 29, 2023 June 6, 2023 Earnings Presentation 2© Ciena Corporation 2023. All rights reserved. Proprietary information. Forward-looking statemen

a2023q2earningspresentat © Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended April 29, 2023 June 6, 2023 Earnings Presentation 2© Ciena Corporation 2023. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-look

June 6, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 6, 2023 Ciena Corporation (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 6, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

May 31, 2023 EX-1.01

hibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2022 to December 31, 2022 This Conflict Minerals Report (this “Report”) of Ciena Corporation (“Ciena” or “we”) has been prepared pursuant to Rule 13p-1 (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2022 to December 31, 2022. The

May 31, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission File Number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address of principal executive o

April 6, 2023 EX-99.1

Ciena Reaffirms Fiscal Second Quarter and Full Year 2023 Guidance

EX-99.1 Exhibit 99.1 Press Contact: Nicole Anderson Ciena Corporation +1 (410) 694-5786 [email protected] Investor Contact: Gregg Lampf Ciena Corporation +1 (410) 694-5700 [email protected] FOR IMMEDIATE RELEASE Ciena Reaffirms Fiscal Second Quarter and Full Year 2023 Guidance HANOVER, Md. – April 6, 2023 - Ciena® Corporation (NYSE: CIEN), a networking systems, services and software company, today announced

April 6, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 6, 2023 Ciena Corporation (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 6, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

April 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 30, 2023 Ciena Corporation (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 30, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 28, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

March 6, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 6, 2023 Ciena Corporation (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 6, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 6, 2023 EX-99.1

Ciena Reports Fiscal First Quarter 2023 Financial Results Revenue increased 25% year-over-year

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2023 Financial Results Revenue increased 25% year-over-year HANOVER, Md.

March 6, 2023 EX-99.2

Copyright © Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended January 28, 2023 March 6, 2023 Earnings Presentation 2Copyright © Ciena Corporation 2023. All rights reserved. Proprietary information. F

ex9922023q1earningsprese Copyright © Ciena Corporation 2023. All rights reserved. Proprietary information. Ciena Corporation Period ended January 28, 2023 March 6, 2023 Earnings Presentation 2Copyright © Ciena Corporation 2023. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a

March 3, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Pro

February 16, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

February 16, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confide

February 16, 2023 ARS

ARS

3 2022$QQXDO5HSRUW T o ge ther , we build tomorrowAs a collaborative force, the people of Ciena continue to create ưH[LEOH , open, and sustainable networks that better serve all users—today and into the future.

February 15, 2023 EX-10.1

First Amendment to ABL Credit Agreement, dated February 10, 2023, by and among Ciena Corporation, Ciena Communications, Inc., Ciena Government Solutions, Inc., and Ciena Canada ULC, as borrowers, Ciena Communications International, LLC and Blue Planet Software, Inc., as guarantors, the lenders party thereto, and Bank of America, N.A., as administrative agent.

Exhibit 10.1 FIRST AMENDMENT TO ABL CREDIT AGREEMENT This FIRST AMENDMENT TO ABL CREDIT AGREEMENT (this “Agreement”) is entered into as of February 10, 2023, by and among Ciena Corporation, a Delaware corporation (the “Company”), Ciena Communications, Inc., a Delaware corporation (“CCI”), Ciena Government Solutions, Inc., a Delaware corporation (“CGSI” and, together with the Company and CCI, colle

February 15, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): February 10, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

February 9, 2023 SC 13G/A

CIEN / Ciena Corporation / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.1 CIENA CORP COMMON STOCK Cusip #171779309 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #171779309 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 8,906,659 Item 6: 0 Item 7: 8,910,634 Item 8: 0 Item 9: 8,910,63

February 9, 2023 SC 13G/A

CIEN / Ciena Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0581-cienacorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Ciena Corp. Title of Class of Securities: Common Stock CUSIP Number: 171779309 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pur

January 27, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 26, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

January 27, 2023 EX-3.1

Amended and Restated Bylaws of Ciena Corporation

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF CIENA CORPORATION (Amended and Restated January 26, 2023) ARTICLE I Stockholders Section 1. Annual Meeting. If required by applicable law, an annual meeting of the stockholders of the Corporation shall be held on such date, at such time and at such place, if any, within or without the State of Delaware as may be designated by the Board of Directors, for t

January 26, 2023 SC 13G/A

CIEN / Ciena Corporation / BlackRock Inc. Passive Investment

SC 13G/A 1 us1717793095012623.txt us1717793095012623.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

January 24, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 24, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

January 23, 2023 EX-10.1

Incremental Joinder and Amendment Agreement, dated January 19, 2023, by and among Ciena Corporation, Ciena Communications, Inc., Ciena Government Solutions, Inc., Ciena Communications International, LLC, Blue Planet Software, Inc., Bank of America, N.A., as administrative agent, and the lenders party thereto.++

Exhibit 10.1 EXECUTION VERSION INCREMENTAL JOINDER AND AMENDMENT AGREEMENT INCREMENTAL JOINDER AND AMENDMENT AGREEMENT, dated as of January 19, 2023 (this “Amendment”), by and among Ciena Corporation, a Delaware corporation (the “Borrower”), the other Loan Parties party hereto, the 2023 Incremental Term Lenders (as defined below) and Bank of America, N.A., as administrative agent (in such capacity

January 23, 2023 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 19, 2023 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

January 20, 2023 SC 13G

CIEN / Ciena Corporation / BlackRock Inc. Passive Investment

SC 13G 1 us1717793095011923.txt us1717793095011923.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

December 16, 2022 EX-10.7

Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2022)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the ?Company?), hereby grants restricted stock units (?Restricted Stock Units?) relating to shares of its common stock, $0.

December 16, 2022 EX-21.1

Subsidiaries of registrant

EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Global Products Company, LTD United Kingdom Ciena Canada ULC Canada Ciena Switzerland GMBH Switzerland Ciena Global Holding, LP Scotland

December 16, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 29, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 16, 2022 EX-10.8

Form of Performance Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2022)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN PERFORMANCE STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the ?Company?), hereby grants performance stock units relating to shares of its common stock, $0.

December 16, 2022 EX-10.9

Form of Market Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan (revised 2022)*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN MARKET STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the ?Company?), hereby grants market stock units relating to shares of its common stock, $0.

December 8, 2022 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2022 and Year-End Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2022 and Year-End Financial Results HANOVER, Md.

December 8, 2022 EX-99.2

Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended October 29, 2022 December 8, 2022 Earnings Presentation 2Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information

ex9922022q4earningsprese Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended October 29, 2022 December 8, 2022 Earnings Presentation 2Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contai

December 8, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 8, 2022 Ciena Corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 8, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

November 22, 2022 EX-99.1

Ciena Makes Strategic Acquisitions in Fiber Broadband Access to Further Address Growing Opportunity at the Network Edge Announces Intent to Acquire Tibit Communications and Acquisition of Benu Networks

FOR IMMEDIATE RELEASE Ciena Makes Strategic Acquisitions in Fiber Broadband Access to Further Address Growing Opportunity at the Network Edge Announces Intent to Acquire Tibit Communications and Acquisition of Benu Networks HANOVER, Md.

November 22, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 22, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 7, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

September 1, 2022 EX-99.1

Ciena Reports Fiscal Third Quarter 2022 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2022 Financial Results HANOVER, Md.

September 1, 2022 EX-99.2

Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended July 30, 2022 September 1, 2022 Earnings Presentation 2Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information.

Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended July 30, 2022 September 1, 2022 Earnings Presentation 2Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-looki

September 1, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 1, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

June 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 2, 2022 EX-99.1

Ciena Reports Fiscal Second Quarter 2022 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2022 Financial Results HANOVER, Md.

June 2, 2022 EX-99.2

Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended April 30, 2022 June 2, 2022 Earnings Presentation 2Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Forw

Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended April 30, 2022 June 2, 2022 Earnings Presentation 2Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-looking s

June 2, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 2, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

May 31, 2022 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2021 to December 31, 2021 This Conflict Minerals Report (this ?Report?) of Ciena Corporation (?Ciena? or ?we?) has been prepared pursuant to Rule 13p-1 (the ?Rule?) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2021 to December 31, 2021. The

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

SD 1 formsd-2022.htm SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission File Number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address

April 20, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 31, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 29, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

March 7, 2022 EX-99.1

Ciena Reports Fiscal First Quarter 2022 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2022 Financial Results HANOVER, Md.

March 7, 2022 EX-99.2

Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended January 29, 2022 March 7, 2022 Earnings Presentation 2Copyright © Ciena Corporation 2022. All rights reserved. Proprietary information. F

Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Ciena Corporation Period ended January 29, 2022 March 7, 2022 Earnings Presentation 2Copyright ? Ciena Corporation 2022. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-lookin

March 7, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 7, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

February 15, 2022 EX-99.1

APPENDIX A - Reconciliation of Expected Adjusted (Non- GAAP) Measures for the Fiscal First Quarter of 2022 Low End High End Of Range Of Range Gross Margin Percentage Reconciliation (GAAP/non-GAAP) (%) Expected GAAP gross margin percentage 44.0% 45.0%

FOR IMMEDIATE RELEASE Ciena Announces Preliminary Fiscal First Quarter 2022 Results HANOVER, Md.

February 15, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): February 15, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

February 15, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confide

February 15, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy S

February 9, 2022 SC 13G

CIEN / Ciena Corporation / FMR LLC Passive Investment

SCHEDULE 13G Amendment No. 0 CIENA CORP COMMON STOCK Cusip #171779309 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #171779309 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 3,861,071 Item 6: 0 Item 7: 8,887,807 Item 8: 0 Item 9: 8,887,807 Item 11: 5.738% Ite

February 9, 2022 SC 13G/A

CIEN / Ciena Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Ciena Corp. Title of Class of Securities: Common Stock CUSIP Number: 171779309 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13

January 27, 2022 SC 13G/A

CIEN / Ciena Corporation / BlackRock Inc. Passive Investment

us1717793095012722.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 15) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

January 26, 2022 SC 13G/A

CIEN / Ciena Corporation / BlackRock Inc. Passive Investment

us1717793095012522.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 15) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

January 18, 2022 EX-4.1

Indenture, dated as of January 18, 2022, by and among Ciena Corporation, the subsidiary guarantors party thereto and U.S. Bank National Association, as trustee, including the Form of 4.00% Senior Notes due 2030 attached as Exhibit A thereto

Exhibit 4.1 Execution Version CIENA CORPORATION THE GUARANTORS NAMED ON THE SIGNATURE PAGES HERETO and U.S. BANK NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of January 18, 2022 4.00% Senior Notes due 2030 TABLE OF CONTENTS Page ARTICLE One DEFINITIONS AND INCORPORATION BY REFERENCE SECTION 1.01. Definitions 1 SECTION 1.02. Other Definitions 20 SECTION 1.03. Rules of Construction 20 SECTION

January 18, 2022 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 18, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) IRS Employer Identification No.

January 12, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 11, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

January 12, 2022 EX-99.1

Ciena Announces Pricing of $400 Million Senior Notes Private Offering

Press Contact: Jamie Moody Ciena Corporation +1 (214) 995-8035 [email protected] Investor Contact: Gregg Lampf Ciena Corporation +1 (410) 694-5700 [email protected] FOR IMMEDIATE RELEASE Ciena Announces Pricing of $400 Million Senior Notes Private Offering HANOVER, Md. ? January 11, 2022 ? Ciena Corporation (NYSE: CIEN) (?Ciena?) today announced that it has priced a private offering of $400 million in aggre

January 10, 2022 EX-99.1

Press Contact: Jamie Moody Ciena Corporation +1 (214) 995-8035 [email protected] Investor Contact: Gregg Lampf Ciena Corporation +1 (410) 694-5700 [email protected] FOR IMMEDIATE RELEASE Ciena Announces Launch of Senior Notes Private Offering HANOVER, Md. – Ja

Press Contact: Jamie Moody Ciena Corporation +1 (214) 995-8035 [email protected] Investor Contact: Gregg Lampf Ciena Corporation +1 (410) 694-5700 [email protected] FOR IMMEDIATE RELEASE Ciena Announces Launch of Senior Notes Private Offering HANOVER, Md. ? January 10, 2022 ? Ciena Corporation (NYSE: CIEN) (?Ciena?) today announced that it has commenced a private offering of Senior Notes due 2030 (the ?Note

January 10, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): January 10, 2022 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

December 17, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 17, 2021 EX-21.1

Subsidiaries of registrant

EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Global Products Company, LTD United Kingdom Ciena Canada ULC Canada Ciena Switzerland GMBH Switzerland Ciena Communications Singapore PTE. LTD. Singapore Ciena Global Holding, LP Scotland

December 14, 2021 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 13, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware 23-2725311 (State or other jurisdiction of incorporation) (IRS Employer Identification No.

December 14, 2021 EX-99.1

Ciena Announces $250 Million Accelerated Share Repurchase Agreement

Exhibit 99.1 Ciena Announces $250 Million Accelerated Share Repurchase Agreement HANOVER, Md.? December 14, 2021 Ciena Corporation (NYSE: CIEN) (the ?Company?) today announced that it has entered into an accelerated share repurchase (ASR) agreement with Goldman Sachs & Co. LLC (?Goldman?) to repurchase $250.0 million of the Company?s common stock as part of the Company?s previously announced $1.0

December 14, 2021 EX-10.1

ASR Agreement, dated December 13, 2021, by and between Ciena Corporation and Goldman Sachs & Co. LLC

Exhibit 10.1 GOLDMAN SACHS & CO. LLC | 200 WEST STREET | NEW YORK, NEW YORK 10282-2198 | TEL: 212-902-1000 Opening Transaction To: Ciena Corporation 7035 Ridge Road Hanover, MD 21076 A/C: 052252608 From: Goldman Sachs & Co. LLC Re: Accelerated Stock Buyback Ref. No: As provided in the Supplemental Confirmation Date: December 13, 2021 This master confirmation (this ?Master Confirmation?), dated as

December 9, 2021 EX-99.2

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended October 30, 2021 December 9, 2021 Earnings Presentation 2Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information

Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended October 30, 2021 December 9, 2021 Earnings Presentation 2Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-loo

December 9, 2021 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2021 and Year-End Financial Results Board Authorizes Share Repurchase up to $1.0 Billion

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2021 and Year-End Financial Results Board Authorizes Share Repurchase up to $1.

December 9, 2021 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 9, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

November 3, 2021 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 31, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 8, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended July 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

September 2, 2021 EX-99.3

Ciena Expands Edge and 5G Capabilities with Acquisition of Vyatta Routing and Switching Technology from AT&T

FOR IMMEDIATE RELEASE Ciena Expands Edge and 5G Capabilities with Acquisition of Vyatta Routing and Switching Technology from AT&T HANOVER, Md.

September 2, 2021 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 2, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 2, 2021 EX-99.1

Ciena Reports Fiscal Third Quarter 2021 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2021 Financial Results HANOVER, Md.

September 2, 2021 EX-99.2

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended July 31, 2021 September 2, 2021 Earnings Presentation 2Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended July 31, 2021 September 2, 2021 Earnings Presentation 2Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-looki

June 9, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 1, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (I.

June 3, 2021 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 3, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

June 3, 2021 EX-99.2

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended May 1, 2021 June 3, 2021 Earnings Presentation 2Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information. Forward

Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Ciena Corporation Period ended May 1, 2021 June 3, 2021 Earnings Presentation 2Copyright ? Ciena Corporation 2021. All rights reserved. Proprietary information. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-looking stat

June 3, 2021 EX-99.1

Ciena Reports Fiscal Second Quarter 2021 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2021 Financial Results HANOVER, Md.

May 28, 2021 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

EX-1.01 2 ex101conflictminrprt2021.htm EX-1.01 Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2020 to December 31, 2020 This Conflict Minerals Report (this “Report”) of Ciena Corporation (“Ciena” or “we”) has been prepared pursuant to Rule 13p-1 (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period

May 28, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organizat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-36250 (Commission File Number) 23-2725311 (I.R.S. Employer Identification No.) 7035 Ridge Road, Hanover, MD (Address of principal executive o

April 21, 2021 S-8

- S-8

As filed with the Securities and Exchange Commission on April 21, 2021 Registration No.

April 12, 2021 SC 13G/A

SC 13G/A

us1717793095040921.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 14) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) March 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

April 6, 2021 EX-10.1

Amended and Restated Ciena Corporation Employee Stock Purchase Plan

AMENDED AND RESTATED CIENA CORPORATION EMPLOYEE STOCK PURCHASE PLAN The Board of Directors of Ciena Corporation (the ?Company?) has adopted this Amended and Restated 2003 Employee Stock Purchase Plan (the ?Plan?) to enable eligible employees of the Company and its participating Affiliates (as defined below), through payroll deductions, to purchase shares of the Company?s common stock, par value $0.

April 6, 2021 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 1, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 10, 2021 EX-10.1

Ciena Corporation Amended and Restated Incentive Bonus Plan, as amended February 23, 2021*

CIENA CORPORATION INCENTIVE BONUS PLAN (Amended and Restated as of February 23, 2021) 1.

March 10, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 4, 2021 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): March 4, 2021 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 4, 2021 EX-99.1

Ciena Reports Fiscal First Quarter 2021 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal First Quarter 2021 Financial Results HANOVER, Md.

March 4, 2021 EX-99.2

Copyright © Ciena Corporation 2021. All rights reserved. Confidential & Proprietary. Ciena Corporation Period ended January 30, 2021 March 4, 2021 Earnings Presentation 2Copyright © Ciena Corporation 2021. All rights reserved. Confidential & Propriet

Copyright ? Ciena Corporation 2021. All rights reserved. Confidential & Proprietary. Ciena Corporation Period ended January 30, 2021 March 4, 2021 Earnings Presentation 2Copyright ? Ciena Corporation 2021. All rights reserved. Confidential & Proprietary. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters contain a number of forward-

February 18, 2021 DEFA14A

- DEFA14A

DEFA14A 1 def14anoticeofinternetavai.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant o Check the appropr

February 18, 2021 DEF 14A

Proposal No. 2 - Amendment

DEF 14A 1 d80516ddef14a.htm DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐ Check the ap

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Ciena Corp. Title of Class of Securities: Common Stock CUSIP Number: 171779309 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13

January 29, 2021 SC 13G/A

SC 13G/A

us1717793095012821.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 13) CIENA CORPORATION - (Name of Issuer) Common Stock - (Title of Class of Securities) 171779309 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

December 18, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended October 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-36250

December 18, 2020 EX-10.3

Form of Employee Restricted Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan*

EX-10.3 3 ex103-2017rsuagree201218.htm EX-10.3 CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants restricted stock units (“Restricted Stock Units”) relating to shares of its common stock, $0.01 par value (the “Stock”), to the individual named below as the Grantee, subject to the vesting and other t

December 18, 2020 EX-21.1

Subsidiaries of registrant

EX-21.1 6 ex21120201031-subsidiaries.htm EX-21.1 EXHIBIT 21.1 Subsidiary Jurisdiction of Incorporation or Organization Ciena Communications, Inc. Delaware Ciena Canada, Inc. Canada

December 18, 2020 EX-10.5

Form of Performance Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN PERFORMANCE STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants performance stock units relating to shares of its common stock, $0.

December 18, 2020 EX-10.6

Form of Market Stock Unit Agreement for Ciena Corporation 2017 Omnibus Incentive Plan*

CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN MARKET STOCK UNIT AGREEMENT Ciena Corporation, a Delaware corporation, (the “Company”), hereby grants market stock units relating to shares of its common stock, $0.

December 18, 2020 EX-4.2

Description of Securities Registered Under Section 12 of the Securities Exchange Act of 1934

EX-4.2 2 ex42-descriptionofsecuriti.htm EX-4.2 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of the date of the Annual Report on Form 10-K of which this exhibit forms a part, the only class of securities of Ciena Corporation (“Ciena”, “we” and “our”) registered under Section 12 of the Securities Exchange Act of 1934, as amend

December 10, 2020 EX-99.2

Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Ciena Corporation Period ended October 31, 2020 December 10, 2020 Earnings Presentation 2Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Prop

q420earningsxpresentati Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Ciena Corporation Period ended October 31, 2020 December 10, 2020 Earnings Presentation 2Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Forward-looking statements and non-GAAP measures Information in this presentation and related comments of presenters

December 10, 2020 8-K

Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 10, 2020 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

December 10, 2020 EX-99.1

Ciena Reports Fiscal Fourth Quarter 2020 and Year-End Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Fourth Quarter 2020 and Year-End Financial Results HANOVER, Md.

September 9, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended August 1, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

September 3, 2020 EX-99.1

Ciena Reports Fiscal Third Quarter 2020 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Third Quarter 2020 Financial Results HANOVER, Md.

September 3, 2020 EX-99.2

Ciena Corporation Earnings Presentation Period ended August 1, 2020 September 3, 2020 Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Forward-looking statements and non-GAAP measures Information in this presentati

q320earningsxpresentati Ciena Corporation Earnings Presentation Period ended August 1, 2020 September 3, 2020 Copyright © Ciena Corporation 2020.

September 3, 2020 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 3, 2020 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

July 1, 2020 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 30, 2020 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

July 1, 2020 EX-99.1

Ciena Appoints Hassan Ahmed to Board of Directors

FOR IMMEDIATE RELEASE Ciena Appoints Hassan Ahmed to Board of Directors HANOVER, Md.

June 10, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 2, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

June 4, 2020 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): June 4, 2020 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

June 4, 2020 EX-99.2

Ciena Corporation Earnings Presentation Period ended May 2, 2020 June 4, 2020 Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Forward-looking statements and non-GAAP measures Information in this presentation and r

ex992q220earningspresent Ciena Corporation Earnings Presentation Period ended May 2, 2020 June 4, 2020 Copyright © Ciena Corporation 2020.

June 4, 2020 EX-99.1

Ciena Reports Fiscal Second Quarter 2020 Financial Results

FOR IMMEDIATE RELEASE Ciena Reports Fiscal Second Quarter 2020 Financial Results HANOVER, Md.

May 29, 2020 EX-1.01

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

Exhibit 1.01 Ciena Corporation Conflict Minerals Report For the reporting period from January 1, 2019 to December 31, 2019 This Conflict Minerals Report (the “Report”) of Ciena Corporation (“Ciena”) has been prepared pursuant to Rule 13p-1 and Form SD (the “Rule”) promulgated under the Securities Exchange Act of 1934, as amended, for the reporting period January 1, 2019 to December 31, 2019. The R

May 29, 2020 SD

- SD

SD 1 formsd-2020.htm SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form SD SPECIALIZED DISCLOSURE REPORT Ciena Corporation (Exact Name of Registrant as Specified in Charter) Delaware (State or Other Jurisdiction of Incorporation or Organization) 001-36250 (Commission File No.) 23-2725311 (I.R.S. Employer Identification Number) 7035 Ridge Road, Hanover, MD (Address of P

April 27, 2020 TEXT-EXTRACT

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United States securities and exchange commission logo April 27, 2020 James Moylan, Jr.

April 27, 2020 LETTER

LETTER

United States securities and exchange commission logo April 27, 2020 James Moylan, Jr.

April 23, 2020 CORRESP

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7035 Ridge Road Hanover, Maryland 21076 www.ciena.com James E. Moylan, Jr. Sr. Vice President & Chief Financial Officer Direct Dial: 410.981.7495 Fax: 410.865.8001 E-mail : [email protected] April 23, 2020 U.S. Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, NE Washington, D.C. 20549 Attn: Mindy Hooker Martin James Re: Ciena Corporation Form

April 16, 2020 LETTER

LETTER

April 16, 2020 James Moylan, Jr. Sr. Vice President, Finance and Chief Financial Officer CIENA CORP 7035 Ridge Road Hanover, MD 21076 Re: CIENA CORP Form 10-K for the Fiscal Year Ended November 2, 2019 Filed on December 20, 2019 File No. 1-36250 Dear Mr. Moylan: We have limited our review of your filing to the financial statements and related disclosures and have the following comments. In some of

April 16, 2020 TEXT-EXTRACT

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April 16, 2020 James Moylan, Jr. Sr. Vice President, Finance and Chief Financial Officer CIENA CORP 7035 Ridge Road Hanover, MD 21076 Re: CIENA CORP Form 10-K for the Fiscal Year Ended November 2, 2019 Filed on December 20, 2019 File No. 1-36250 Dear Mr. Moylan: We have limited our review of your filing to the financial statements and related disclosures and have the following comments. In some of

April 14, 2020 S-8

CIEN / Ciena Corp. S-8 - - S-8

As filed with the Securities and Exchange Commission on April 14, 2020 Registration No.

April 6, 2020 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): April 2, 2020 Ciena Corporation (Exact name of registrant as specified in its charter) Commission File Number: 001-36250 Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

April 6, 2020 EX-10.1

Amendment to Ciena Corporation 2017 Omnibus Incentive Plan dated April 2, 2020

EX-10.1 2 ex101amendto2017omninc.htm EXHIBIT 10.1 AMENDMENT TO CIENA CORPORATION 2017 OMNIBUS INCENTIVE PLAN THIS AMENDMENT NO. 1 (this “Amendment”) to the Ciena Corporation 2017 Omnibus Incentive Plan (the “Plan”), which increases the number of shares available for issuance under the Plan by twelve million, two hundred thousand (12,200,000) shares, was adopted by the Board of Directors of Ciena C

March 11, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark one) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended January 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-36250 Ciena Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 7035 Ridge Road, Hanover, MD (Address of principal executive offices) 23-2725311 (IRS Employer Identification No.

March 6, 2020 DEFA14A

CIEN / Ciena Corp. DEFA14A - - DEFA14A

DEFA14A 1 defa14aproxysupp20200306.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant þ Filed by a Party other than the Registrant o Check the appropria

March 5, 2020 EX-99.2

Ciena Corporation Earnings Presentation Period ended January 31, 2020 March 5, 2020 Copyright © Ciena Corporation 2020. All rights reserved. Confidential & Proprietary. Forward-looking statements and non-GAAP measures Information in this presentation

ex992q120earningspresent Ciena Corporation Earnings Presentation Period ended January 31, 2020 March 5, 2020 Copyright © Ciena Corporation 2020.

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