III / Information Services Group, Inc. - SEC-Einreichungen, Jahresbericht, Proxy Statement

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 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: 001-33287 INFORMATION SERVICES

Information Services Group Announces First-Quarter 2026 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces First-Quarter 2026 Results ● Reports first-quarter GAAP revenues of $61.2 million, up 3% versus prior year, at the top end of guidance ● Reports first-quarter GAAP net income of $2.7 million, up 83%; GAA

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) May 7, 2026 (May 7, 2026) Informat

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) May 7, 2026 (May 7, 2026) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of incorpor

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): April 24, 2026 Information Servic

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): April 24, 2026 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File N

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 (Amendment No.   )

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 (Amendment No.   ) 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 Ru

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 (Amendment No. )

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 (Amendment No. ) 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)) ☐ Defin

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 December 31, 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 001-3328

POWER OF ATTORNEY

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany Technology

Information Services Group, Inc. Insider Trading Policy

Exhibit 19.1 Information Services Group, Inc. Insider Trading Policy I. Purpose and Scope II. General Restrictions III. Trading Windows for Directors and Key Personnel IV. Broker Requirements for Directors and Key Personnel V. Additional Restrictions and Reporting Requirements for Directors and Corporate Officers of the Company VI. Rule 10b5-1 Insider Selling Plans VII. Trading Pursuant to a 401(k

FRENCH SUB-PLAN TO THE AMENDED AND RESTATED INFORMATION SERVICES GROUP, INC. 2007 EQUITY AND INCENTIVE AWARD PLAN (as amended by the 2025 amendment) December 2025

Exhibit 10.5 FRENCH SUB-PLAN TO THE AMENDED AND RESTATED INFORMATION SERVICES GROUP, INC. 2007 EQUITY AND INCENTIVE AWARD PLAN (as amended by the 2025 amendment) December 2025 1.PURPOSE The shareholders’ general meeting of Information Services Group, Inc. (the “Company”) adopted the 2007 Equity And Incentive Award Plan in 2007, then restated it in 2014, then amended it in 2020, then on 24 April 20

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) March 5, 2026 (March 5, 2026) Info

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) March 5, 2026 (March 5, 2026) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of inco

Information Services Group Announces Fourth-Quarter and Full-Year 2025 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter and Full-Year 2025 Results ● Reports fourth-quarter GAAP revenues of $61.2 million, at the top end of guidance and up 6% versus prior year ● Reports fourth-quarter GAAP net income of $2.6

Information Services Group Announces Third-Quarter 2025 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2025 Results ● Reports third-quarter GAAP revenues of $62 million, exceeding guidance and up 8% versus prior year, excluding results from divested automation unit ● Reports third-quarter GA

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) November 3, 2025 (November 3, 2025

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) November 3, 2025 (November 3, 2025) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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: 001-33287 INFORMATION SERV

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 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: 001-33287 INFORMATION SERVICES

Information Services Group Announces Second-Quarter 2025 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2025 Results ● Reports second-quarter GAAP revenues of $62 million, exceeding guidance and up 7% versus prior year, excluding results from divested automation unit ● Reports second-quarter

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) August 6, 2025 (August 6, 2025) In

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) August 6, 2025 (August 6, 2025) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of in

First Amendment Agreement, dated as of June 27, 2024, to the Third Amended and Restated Credit Agreement, by and among Information Services Group, Inc., the guarantors party thereto, the lenders party to the Third Amended and Restated Credit Agreement and Bank of America, N.A., as administrative agent, swingline lender and letter of credit issuer.

Exhibit 10.1 FIRST AMENDMENT AGREEMENT FIRST AMENDMENT AGREEMENT (this “Agreement”) dated as of June [], 2024 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., and TPI Eurosourcing, L.L.C. (collectively, the “Guarantors”), (3) the financial institu

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 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: 001-33287 INFORMATION SERVICES

Filing Fee Table

Exhibit 107 Form S-8 (Form Type) Information Services Group, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title (1) Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Share (3) Maximum Aggregate Offering Price (3) Fee Rate Amount of Registration Fee Equity Common Stock, $0.001 par value per

As filed with the Securities and Exchange Commission on May 9, 2025.

As filed with the Securities and Exchange Commission on May 9, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INFORMATION SERVICES GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 20-5261587 (State or other jurisdiction of incorporation or organization) (

Information Services Group Announces First-Quarter 2025 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces First-Quarter 2025 Results ● Reports first-quarter GAAP revenues of $60 million, exceeding guidance and up 5% versus prior year, excluding results from divested automation unit ● Reports first-quarter GA

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) May 8, 2025 (May 8, 2025) Informat

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) May 8, 2025 (May 8, 2025) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of incorpor

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): April 24, 2025 Information Servic

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): April 24, 2025 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File N

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 (Amendment No.   )

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 (Amendment No.   ) 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 R

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 (Amendment No. )

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 (Amendment No. ) 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)) ☐ Defin

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 December 31, 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 001-3328

Subsidiaries of the Company.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany Technology

First Amendment Agreement, dated as of June 27, 2024, to the Third Amended and Restated Credit Agreement, by and among Information Services Group, Inc., the guarantors party thereto, the lenders party to the Third Amended and Restated Credit Agreement and Bank of America, N.A., as administrative agent, swingline lender and letter of credit issue.

Exhibit 10.19 FIRST AMENDMENT AGREEMENT FIRST AMENDMENT AGREEMENT (this “Agreement”) dated as of June [], 2024 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., and TPI Eurosourcing, L.L.C. (collectively, the “Guarantors”), (3) the financial instit

Information Services Group, Inc. Insider Trading Policy.

Exhibit 19.1 Information Services Group, Inc. Insider Trading Policy Updated February 21, 2025 I. Purpose and Scope The purpose of this Insider Trading Policy (this “Policy”) is to establish when trading in the capital stock or other securities, such as bonds, options, derivative instruments, and etc. (the “Securities”), of Information Services Group, Inc. (together with its subsidiaries, the “Com

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Results of Operations and Financial Condition

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) March 6, 2025 (March 6, 2025) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of inco

Regulation FD Disclosure

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): February 28, 2025 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission Fil

ISG Names Samuel L. Molinaro Jr. to Board of Directors Retired president of UBS Americas to chair audit committee

Exhibit 99.1 Press Contacts: Will Thoretz, ISG +1 203 517 3119 [email protected] Julianna Sheridan, Matter Communications for ISG +1 978 518 4520 [email protected] ISG Names Samuel L. Molinaro Jr. to Board of Directors Retired president of UBS Americas to chair audit committee STAMFORD, Conn., February 28, 2025 — Information Services Group (ISG) (Nasdaq: III), a global AI-centered technolog

Information Services Group Announces Fourth-Quarter and Full-Year 2024 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter and Full-Year 2024 Results ● Reports fourth-quarter GAAP revenues of $58 million, at top end of guidance ● Reports fourth-quarter GAAP net income of $3.0 million, GAAP EPS of $0.06 and adj

Current Report

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): January 1, 2025 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

Amendment No. 4, dated January 1, 2025, to the Employment Agreement for Michael P. Connors.

Exhibit 10.1 INFORMATION SERVICES GROUP, INC. Amendment No. 4 to the Employment Agreement for Michael P. Connors This Amendment No. 4 (this “Amendment”) to the Employment Agreement by and between Information Services Group, Inc., a Delaware corporation (“ISG” or the “Company”), and Michael P. Connors (“Executive”) is effective as of January 1, 2025. Capitalized terms used but not defined herein sh

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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: 001-33287 INFORMATION SERV

Results of Operations and Financial Condition

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) November 7, 2024 (November 7, 2024) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Third-Quarter 2024 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2024 Results ● Reports third-quarter GAAP revenues of $61 million ● Reports third-quarter net income of $1.1 million, GAAP EPS of $0.02 and adjusted EPS of $0.05 ● Reports third-quarter adj

Share Purchase Agreement, dated October 1, 2024, by and among ISG Information Services Group Americas, Inc., UST Global Inc and, solely for purposes of Section 10.16 of the Share Purchase Agreement (Guarantee), Information Services Group, Inc.

  Exhibit 2.1 Execution Copy       SHARE PURCHASE AGREEMENT   BY AND between   ISG Information Services Group Americas, Inc.,   UST GLOBAL INC   AND   INFORMATION SERVICES GROUP, INC. (solely for purposes of Section 10.16)   DATED AS OF October 1, 2024             Table of Contents   Page   Article 1 DEFINITIONS 1     Section 1.1 Certain Definitions 1 Section 1.2 Interpretation 16       Article 2

ISG Sells Its Automation Unit to UST Move sharpens ISG’s focus, strengthens balance sheet and immediately enhances shareholder value

Exhibit 99.1 Press Contact: Will Thoretz, ISG +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +1 203 517 3104 [email protected] ISG Sells Its Automation Unit to UST Move sharpens ISG’s focus, strengthens balance sheet and immediately enhances shareholder value STAMFORD, Conn., October 2, 2024 — Information Services Group (ISG) (Nasdaq: III), a leading global

Regulation FD Disclosure, Entry into a Material Definitive Agreement

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 1, 2024 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

First Amendment Agreement, dated as of June 27, 2024, to the Third Amended and Restated Credit Agreement, by and among Information Services Group, Inc., the guarantors party thereto, the lenders party to the Third Amended and Restated Credit Agreement and Bank of America, N.A., as administrative agent, swingline lender and letter of credit issuer.

Exhibit 10.1 FIRST AMENDMENT AGREEMENT FIRST AMENDMENT AGREEMENT (this “Agreement”) dated as of June [], 2024 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., and TPI Eurosourcing, L.L.C. (collectively, the “Guarantors”), (3) the financial institu

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 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: 001-33287 INFORMATION SERVICES

Results of Operations and Financial Condition

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) August 5, 2024 (August 5, 2024) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of in

Information Services Group Announces Second-Quarter 2024 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2024 Results ● Reports second-quarter GAAP revenues of $64 million ● Reports second-quarter net income of $2.0 million, GAAP EPS of $0.04 and adjusted EPS of $0.08 ● Reports second-quarter

LETTER

United States securities and exchange commission logo June 17, 2024 Michael Sherrick Executive Vice President and Chief Financial Officer Information Services Group, Inc.

June 11, 2024

June 11, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Trade & Services 100 F Street, NE Washington, DC 20549 Attention: Robert Shapiro Doug Jones Re: Information Services Group, Inc.

LETTER

United States securities and exchange commission logo May 29, 2024 Michael Sherrick Executive Vice President and Chief Financial Officer Information Services Group, Inc.

Filing Fee Table

Exhibit 107 Form S-8 (Form Type) Information Services Group, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title(1) Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.001 par value per share Rul

As filed with the Securities and Exchange Commission on May 23, 2024

As filed with the Securities and Exchange Commission on May 23, 2024 Registration No.

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 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: 001-33287 INFORMATION SERVICES

Results of Operations and Financial Condition

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) May 9, 2024 (May 9, 2024) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of incorpor

Information Services Group Announces First-Quarter 2024 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces First-Quarter 2024 Results ● Reports first-quarter GAAP revenues of $64 million ● Reports first-quarter net loss of $3.4 million, GAAP loss per share of $0.07 and adjusted net income per share of $0.01 ●

Current Report

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) April 25, 2024 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

III / Information Services Group, Inc. / JPMORGAN CHASE & CO - FILING INFORMATION SERVICES GROUP, INC. Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 02)* INFORMATION SERVICES GROUP, INC. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 45675Y104 (CUSIP Number) March 29, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

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 (Amendment No.    )

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 (Amendment No.    ) 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

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 (Amendment No. )

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 (Amendment No. ) 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)) ☐ Defin

Subsidiaries of the Company.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany Technology

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 December 31, 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 001-3328

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Information Services Group, Inc. Clawback Policy.

Exhibit 97.1 INFORMATION SERVICES GROUP, INC. CLAWBACK POLICY EFFECTIVE DECEMBER 1, 2023 1. Purpose. The purpose of this Information Services Group, Inc. (the “Company”) Clawback Policy (this “Policy”) is to enable the Company to recover Erroneously Awarded Compensation from Covered Executive Officers in the event that the Company is required to prepare an Accounting Restatement. This Policy is de

Information Services Group Announces Fourth-Quarter and Full-Year 2023 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter and Full-Year 2023 Results ● Reports fourth-quarter GAAP revenues of $66 million ● Reports fourth-quarter net loss of $2.9 million, GAAP loss per share of $0.06 and adjusted EPS of $0.06;

Results of Operations and Financial Condition

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) March 7, 2024 (March 7, 2024) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of inco

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

SC 13G/A 1 tm246138d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 16) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriat

III / Information Services Group, Inc. / Private Capital Management, LLC - AMENDMENT NO. 7 Passive Investment

SC 13G/A 1 o25240sc13ga7.htm AMENDMENT NO. 7 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 7)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of This Statement) Check the app

III / Information Services Group, Inc. / BlackRock Inc. Passive Investment

SC 13G 1 us45675y1047013124.txt us45675y1047013124.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) Information Services Group Inc. - (Name of Issuer) Common Stock - (Title of Class of Securities) 45675Y104 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appro

III / Information Services Group, Inc. / JPMORGAN CHASE & CO - FILING INFORMATION SERVICES GROUP, INC. Passive Investment

SC 13G/A 1 INFORMATIONSERVICESGROUP.htm FILING INFORMATION SERVICES GROUP, INC. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 01)* INFORMATION SERVICES GROUP, INC. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 45675Y104 (CUSIP Number) December 29, 2023 (Date of Event Whi

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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 001-33287 INFORMATION SERVI

Results of Operations and Financial Condition

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) November 2, 2023 (November 2, 2023) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Third-Quarter 2023 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Michael Sherrick +203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2023 Results ● Reports GAAP revenues of $72 million, a third-quarter record ● Reports net income of $3.2 million, GAAP EPS of $0.06 and adjusted EPS of $0.11 ● Reports third-quarter adjuste

As filed with the Securities and Exchange Commission on September 18, 2023

As filed with the Securities and Exchange Commission on September 18, 2023 Registration No.

Filing Fee Table

Exhibit 107 Form S-8 (Form Type) Information Services Group, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title(1) Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.001 par value per share Rul

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 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 001-33287 INFORMATION SERVICES G

Information Services Group Announces Second-Quarter 2023 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2023 Results ● Reports GAAP revenues of $75 million, a second-quarter record ● Reports net income of $2.3 million, GAAP EPS of $0.05 and adjusted EPS of $0.11 ● Reports second-quarter adjusted E

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) August 3, 2023 (August 3, 2023) In

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) August 3, 2023 (August 3, 2023) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of in

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) June 21, 2023 Information Services

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) June 21, 2023 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Num

ISG CFO Bert Alfonso to Retire in August; Michael Sherrick Named His Successor as Executive Vice President and CFO Sherrick brings significant tech industry, operational and financial expertise to role

Exhibit 99.1 Press Contacts: Will Thoretz, ISG +1 203 517 3119 [email protected] Julianna Sheridan, Matter Communications for ISG +1 978-518-4520 [email protected] ISG CFO Bert Alfonso to Retire in August; Michael Sherrick Named His Successor as Executive Vice President and CFO Sherrick brings significant tech industry, operational and financial expertise to role STAMFORD, Conn., June 21, 2

Employment Letter for Michael A. Sherrick, dated June 21, 2023 (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on June 23, 2023 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 10.1 Thomas S. Kucinski Executive Vice President Chief Human Resources Officer Personal & Confidential June 21, 2023 Mr. Michael Sherrick Dear Michael, I am pleased to confirm the terms under which you will join Information Services Group, Inc. (ISG) as Executive Vice President and Chief Financial Officer, based in our Stamford CT headquarters. You will also become a member of our ISG Exec

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 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 001-33287 INFORMATION SERVICES

Information Services Group Announces First-Quarter 2023 Results

Exhibit 99.1 Press Contact: Will Thoretz 203-517-3119 [email protected] Investor Contact: Bert Alfonso 203-517-3104 [email protected] Information Services Group Announces First-Quarter 2023 Results ● Reports GAAP revenues of $78 million, an all-time high, exceeding guidance ● Reports net income of $3.5 million, GAAP EPS of $0.07 and adjusted EPS of $0.12 ● Reports record first-quarte

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) May 8, 2023 (May 8, 2023) Informat

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) May 8, 2023 (May 8, 2023) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of incorpor

Submission of Matters to a Vote of Security Holders

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) April 27, 2023 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

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) March 21, 2023 Information Service

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) March 21, 2023 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

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 (Amendment No. )

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 (Amendment No. ) 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)) ☐ Defin

Definitive Proxy Statement previously filed with the SEC on March 15, 2023

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 (Amendment No.   ) 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 Ru

Form of Restricted Stock Unit Award Agreement for Executives (Time-Based) (previously filed as Exhibit 10.6 to the Registrant’s Form 10-K filed with the SEC on March 10, 2023 (Commission File Number: 001-33287), and incorporated herein by reference)

Exhibit 10.6 RESTRICTED STOCK UNIT AWARD AGREEMENT (Time-Based) THIS AGREEMENT (the “Agreement”) is made, effective as of [•] (the “Grant Date”) between Information Services Group, Inc., a Delaware corporation (the “Company”), and [•] an employee of the Company or an Affiliate of the Company, hereinafter referred to as the “Participant”. WHEREAS, the Company desires to grant the Participant a rest

Subsidiaries of the Company.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany TPI Europe

Form of Restricted Stock Unit Agreement for Executives (Performance Based).

Exhibit 10.7 RESTRICTED STOCK UNIT AWARD AGREEMENT (Performance-Based) THIS AGREEMENT (the “Agreement”) is made, effective as of [•] (the “Grant Date”) between Information Services Group, Inc., a Delaware corporation (the “Company”), and [•], an employee of the Company or an Affiliate of the Company, hereinafter referred to as the “Participant”. WHEREAS, the Company desires to grant the Participan

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 December 31, 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 001-3328

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Form of Restricted Unit Agreement for Directors (Time Based).

Exhibit 10.5 RESTRICTED STOCK UNIT AWARD AGREEMENT THIS AGREEMENT (the “Agreement”) is made effective as of [•] (the “Grant Date”), between Information Services Group, Inc., a Delaware corporation (“ISG”) (hereinafter called the “Company”), and [•], a member of the Board who is not an employee of the Company, hereinafter referred to as the “Grantee”. Capitalized terms not otherwise defined herein

Information Services Group Announces Record Fourth-Quarter and Full-Year 2022 Results

Exhibit 99.1 Press Contact: Will Thoretz 203-517-3119 [email protected] Investor Contact: Bert Alfonso 203-517-3104 [email protected] Information Services Group Announces Record Fourth-Quarter and Full-Year 2022 Results ● Reports fourth-quarter GAAP revenues of $74 million, an all-time quarterly high, exceeding guidance and including a negative FX impact of $3.2 million ● Reports fou

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) March 9, 2023 (March 9, 2023) Info

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) March 9, 2023 (March 9, 2023) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of inco

III / Information Services Group Inc. / Private Capital Management, LLC - AMENDMENT NO. 6 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) March 1, 2023 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to wh

ISG Announces Amended, $140 Million Credit Agreement Firm improves financial flexibility, eliminates mandatory annual principal payments under new all-revolver facility with more favorable terms, extended maturity date

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] ISG Announces Amended, $140 Million Credit Agreement Firm improves financial flexibility, eliminates mandatory annual principal payments under new all-revolver facility with more favorable terms, extended maturity date STAMFORD, Conn., February 2

Third Amended and Restated Credit Agreement, dated as of February 22, 2023, among Information Services Group, Inc., various lenders and Bank of America, N.A., as Administrative Agent (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on February 23, 2023 (Commission File Number: 001-33287), and incorporated herein by reference).

  Exhibit 10.1    Published CUSIP Numbers: 45676BAK9 45676BAL7   THIRD AMENDED AND RESTATED CREDIT AGREEMENT   Dated as of February 22, 2023   among   INFORMATION SERVICES GROUP, INC.  as the Borrower,   THE SUBSIDIARIES OF THE BORROWER PARTY HERETO,  as the Guarantors,   BANK OF AMERICA, N.A.,  as Administrative Agent, Swingline Lender and  L/C Issuer,   and   THE LENDERS PARTY HERETO   and   BOF

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

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) February 22, 2023 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

SC 13G/A 1 tm236691d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 15) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriat

III / Information Services Group, Inc. / Private Capital Management, LLC - AMENDMENT NO. 5 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant t

III / Information Services Group, Inc. / JPMORGAN CHASE & CO - FILING INFORMATION SERVICES GROUP, INC. Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* INFORMATION SERVICES GROUP, INC. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 45675Y104 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

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 ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended September 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 0

Information Services Group Announces Third-Quarter 2022 Results and Acquisition of Change 4 Growth

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2022 Results and Acquisition of Change 4 Growth ? Reports third-quarter GAAP revenues of $69 million, reflecting negative FX impact of $4 million ? Reports net income of $6 million, GAAP EPS of $

Results of Operations and Financial Condition

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) November 3, 2022 (November 3, 2022) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Current Report

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) August 31, 2022 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File N

Results of Operations and Financial Condition

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) August 8, 2022 ( August 8, 2022) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (

Information Services Group Announces Second-Quarter 2022 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2022 Results ? Reports second-quarter GAAP revenues of $71 million, reflecting negative FX impact of 500 bps ? Reports net income of $5 million, GAAP EPS of $0.10 and adjusted EPS of $0.13, all

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 ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended June 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 001-33

Amendment to the 2020 Credit Agreement

Exhibit 10.1 EXECUTION VERSION FIRST AMENDMENT AGREEMENT FIRST AMENDMENT AGREEMENT (this ?Agreement?) dated as of June 1, 2022 by and among (1) Information Services Group, Inc. (the ?Borrower?), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., Alsbridge Holdings, Inc., Alsbridge, Inc. and TPI Eurosourcing, L.L.C.

Entry into a Material Definitive Agreement

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) June 1, 2022 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Numb

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 ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended March 31, 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 001-3

Information Services Group Announces First-Quarter 2022 Results and Increases Dividend by 33%

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces First-Quarter 2022 Results and Increases Dividend by 33% ? Reports GAAP revenues of $73 million, an all-time quarterly high, exceeding guidance ? Reports net income of $5 million, GAAP EPS of $0.10 and adjuste

Results of Operations and Financial Condition

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) May 9, 2022 (May 9, 2022) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commiss

Current Report

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) April 28, 2022 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

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 (Amendment No.    )

DEF 14A 1 edge20002001x1def14a.htm DEF 14A 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 (Amendment No.    ) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Us

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 (Amendment No. )

DEFA14A 1 edge20002001x2defa14a.htm 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 (Amendment No. ) 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 Onl

Form of Restricted Unit Agreement for Directors (Time Based).

? Exhibit 10.5 ? RESTRICTED STOCK UNIT AWARD AGREEMENT ? THIS AGREEMENT (the ?Agreement?) is made effective as of [?] (the ?Grant Date?), between Information Services Group, Inc., a Delaware corporation (?ISG?) (hereinafter called the ?Company?), and [?], a member of the Board who is not an employee of the Company, hereinafter referred to as the ?Grantee?. Capitalized terms not otherwise defined h

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

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.

Retirement Agreement dated as of June 10, 2021, between the Company and David E. Berger.

? ? Chief Human Resources Officer ? ? ? Thomas S. Kucinski Executive Vice President ? Chief Human Resources Officer ? ? Exhibit 10.9 June 10, 2021 ? David. E. Berger 12 Byron Lane Larchmont, NY 10538 ? ? Re:Retirement and General Release ? Dear David: ? I want to extend my deepest gratitude to you for your long and valued service to Information Services Group, Inc. (the ?Company? or ?ISG?). This r

Form of Restricted Unit Agreement for Executives (Time Based).

Exhibit 10.6 ? RESTRICTED STOCK UNIT AWARD AGREEMENT (Time-Based) THIS AGREEMENT (the ?Agreement?) is made, effective as of [?] (the ?Grant Date?) between Information Services Group, Inc., a Delaware corporation (the ?Company?), and [?] an employee of the Company or an Affiliate of the Company, hereinafter referred to as the ?Participant?. WHEREAS, the Company desires to grant the Participant a re

Subsidiaries of the Company.

Exhibit 21.1 ? List of Subsidiaries ? ? ? ? ? Subsidiary Jurisdiction of Organization ? ? ? Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH

Form of Restricted Stock Unit Agreement for Executives (Performance Based).

Exhibit 10.7 ? RESTRICTED STOCK UNIT AWARD AGREEMENT (Performance-Based) THIS AGREEMENT (the ?Agreement?) is made, effective as of [?] (the ?Grant Date?) between Information Services Group, Inc., a Delaware corporation (the ?Company?), and [?], an employee of the Company or an Affiliate of the Company, hereinafter referred to as the ?Participant?. WHEREAS, the Company desires to grant the Particip

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Information Services Group Announces Fourth-Quarter 2021 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter 2021 Results ? Reports record fourth-quarter GAAP revenues of $70 million, exceeding guidance ? Reports fourth-quarter net income of $4 million, GAAP EPS of $0.07 and adjusted EPS of $0.10, all

Results of Operations and Financial Condition

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) March 10, 2022 (March 10, 2022) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 14) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

III / Information Services Group, Inc. / RENAISSANCE TECHNOLOGIES LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* INFORMATION SERVICES GROUP, INC. - (Name of Issuer) Shares of Common Stock, $0.001 par value - (Title of Class of Securities) 45675Y104 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box

III / Information Services Group, Inc. / Private Capital Management, LLC - AMENDMENT NO. 4 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant t

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 ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended September 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 0

Information Services Group Announces Third-Quarter 2021 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2021 Results ? Reports record third-quarter GAAP revenues of $71 million, up 15% from prior year, exceeding guidance ? Reports third-quarter net income of $4 million, GAAP EPS of $0.09 and adjust

Results of Operations and Financial Condition

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) November 4, 2021 (November 4, 2021) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Second-Quarter 2021 Results

?Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: Bert Alfonso +1 203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2021 Results ? Reports strong second-quarter GAAP revenues of $71 million, up 23% from prior year, exceeding guidance ? Reports second-quarter net income of $4 million, GAAP EPS of $0.08 and ad

Results of Operations and Financial Condition

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) August 9, 2021 (August 9, 2021) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

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 ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended June 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 001-33

Quarterly Report - 10-Q

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ? FORM 10-Q ? ? ? ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ? For the quarterly period ended March 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 001-3

Information Services Group Announces First-Quarter 2021 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces First-Quarter 2021 Results ? Reports first-quarter GAAP revenues of $67 million, exceeding guidance; fee revenues, excluding impact of reimbursable T&E, up 7% to new record ? Reports record first-quarter net i

Information Services Group Initiates Quarterly Cash Dividend

Exhibit 99.2 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Initiates Quarterly Cash Dividend STAMFORD, Conn., May 10, 2021 ? Information Services Group (ISG) (Nasdaq: III), a leading global technology research and advisory firm, today announced that its Board of Directors has a

Results of Operations and Financial Condition, Other Events

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) May 10, 2021 (May 10, 2021) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commi

Employment Letter for Humberto P. Alfonso, dated April 30, 2021 (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on May 5, 2021 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 10.1 Thomas S. Kucinski Executive Vice President Chief Human Resources Officer Personal & Confidential April 29, 2021 Mr. Humberto Alfonso Dear Bert, I am pleased to confirm the terms under which you will join Information Services Group, Inc. (ISG) as Executive Vice President and Chief Financial Officer, based in our Stamford CT headquarters. You will also become a member of our ISG Execut

ISG Announces David Berger to Retire as CFO in June Bert Alfonso Named Executive Vice President and CFO Alfonso Brings Extensive Financial, Capital Markets and Global M&A Experience to ISG

Exhibit 99.1 Press Contacts: Will Thoretz, ISG +1 203 517 3119 [email protected] Cait Buckley, Matter Communications for ISG +1 617 874 5214 [email protected] ISG Announces David Berger to Retire as CFO in June Bert Alfonso Named Executive Vice President and CFO Alfonso Brings Extensive Financial, Capital Markets and Global M&A Experience to ISG STAMFORD, Conn., April 30, 2021 ? Information

Regulation FD Disclosure

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) April 30, 2021 Information Services Group Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Num

Current Report

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) April 29, 2021 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

the Company’s Definitive Proxy Statement previously filed with the SEC on March 18, 2021

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 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

- DEF 14A

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 (Amendment No. ?????) 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 b

Subsidiaries of the Company.

Exhibit 21.1 ? List of Subsidiaries ? ? ? ? ? Subsidiary Jurisdiction of Organization ? ? ? Information Services Group, Inc. ? Delaware International Advisory Holdings Corp. ? Delaware International Consulting Acquisition Corp. ? Delaware ISG Information Services Group Americas, Inc. ? Texas TPI Eurosourcing, L.L.C. ? Texas TPI Advisory Services India Pvt. Ltd. ? India Information Services Group G

Annual Report - 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney-in-fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Form of Restricted Stock Unit Agreement (Performance Based).

Exhibit 10.17 RESTRICTED STOCK UNIT AWARD AGREEMENT (Performance-Based) THIS AGREEMENT (the ?Agreement?), is made, effective as of [INSERT] (the ?Grant Date?) between Information Services Group, Inc., a Delaware corporation (the ?Company?), and [NAME], an employee of the Company or an Affiliate of the Company, hereinafter referred to as the ?Participant?. WHEREAS, the Company desires to grant the

Information Services Group Announces Fourth-Quarter 2020 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter 2020 Results · Reports fourth-quarter revenues of $66 million, up 8 percent sequentially; adjusted EBITDA of $9 million, up 11 percent sequentially—both exceeding guidance · Reports operating in

Results of Operations and Financial Condition

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) March 11, 2021 (March 11, 2021) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

SCHEDULE 13G (Amendment No. 13) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Stat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 13) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 INFORMATION SERVICES GROUP, INC. - (Name of Issuer) Shares of Common Stock, $0.001 par value - (Title of Class of Securities) 45675Y104 - (CUSIP Number) December 28, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the r

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)*

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant t

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - FORM 8-K

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) December 30, 2020 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

Amendment No. 3 to Employment Agreement for Michael P. Connors (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on December 30, 2020 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 10.1 INFORMATION SERVICES GROUP, INC. Amendment No. 3 to the Employment Agreement for Michael P. Connors This Amendment No. 3 (this “Amendment”) to the Employment Agreement by and between Information Services Group, Inc., a Delaware corporation (the “Company”), and Michael P. Connors (“Executive”) is effective as of December 30, 2020. Capitalized terms used but not defined herein shall hav

Results of Operations and Financial Condition - FORM 8-K

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) November 9, 2020 (November 9, 2020) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Third-Quarter 2020 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces Third-Quarter 2020 Results · Reports third-quarter revenues of $61.6 million; adjusted EBITDA of $8.2 million, both exceeding guidance · Reports net income of $2.1 million, up 19%; GAAP EPS of $0.04, flat; adj

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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 001-33287 INFORMATION SERVI

Results of Operations and Financial Condition

8-K 1 tm2027052-18k.htm FORM 8-K 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) August 10, 2020 (August 10, 2020) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587

Information Services Group Announces Second-Quarter 2020 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces Second-Quarter 2020 Results · Reports second-quarter revenues of $57.4 million; adjusted EBITDA of $7.4 million, both exceeding guidance · Reports net income of $0.6 million; GAAP EPS of $0.01; adjusted EPS of

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 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 001-33287 INFORMATION SERVICES G

- FORM S-8

As filed with the Securities and Exchange Commission on May 11, 2020. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INFORMATION SERVICES GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 20-5261587 (State or other jurisdiction of incorporation or organization)

Information Services Group Announces First-Quarter 2020 Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces First-Quarter 2020 Results · Reports first-quarter revenues of $64 million; net loss of $1 million; GAAP EPS loss of $0.03; adjusted EPS of $0.02; adjusted EBITDA of $4 million · Delivers strong first-quarter

Results of Operations and Financial Condition

8-K 1 tm2019299d18k.htm FORM 8-K 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) May 11, 2020 (May 11, 2020) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (Stat

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 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 001-33287 INFORMATION SERVICES

- FORM 8-K

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) April 30, 2020 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

Information Services Group, Inc. Amended and Restated 2007 Equity and Incentive Award Plan (previously filed as Appendix A to the Company’s Definitive Proxy Statement filed with the SEC on March 20, 2020) (Commission File Number 001-33287), and incorporated herein by reference).

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

III / Information Services Group, Inc. DEFA14A - - 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 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney‑in‑fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

Description of the Securities of the Registrant (previously filed as Exhibit 4.2 to the Registrant’s Form 10-K filed with the SEC on March 11, 2020 (Commission File Number: 001-33287), and incorporated herein by reference)

Exhibit 4.2 DESCRIPTION OF CAPITAL STOCK The following summary of the rights of the capital stock of Information Services Group, Inc. (the “Company”) is not complete and is qualified in its entirety by reference to the Company’s amended and restated certificate of incorporation (the “Company’s certificate of incorporation”), and amended and restated bylaws, as amended (the “Company’s bylaws”), eac

III / Information Services Group, Inc. 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 December 31, 2019 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 001‑3328

Amended and Restated Credit Agreement, dated as of March 10, 2020, among Information Services Group, Inc., various lenders and Bank of America, N.A., as Administrative Agent (previously filed as Exhibit 10.22 to the Registrant’s Form 10-K filed with the SEC on March 11, 2020 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 10.22 SECOND AMENDED AND RESTATED CREDIT AGREEMENT Dated as of March 10, 2020 among INFORMATION SERVICES GROUP, INC. as the Borrower, THE SUBSIDIARIES OF THE BORROWER PARTY HERETO, as the Guarantors, BANK OF AMERICA, N.A., as Administrative Agent, Swingline Lender and L/C Issuer, and THE LENDERS PARTY HERETO BofA SECURITIES, INC., BMO HARRIS BANK N.A., and CITIZENS BANK, N.A., as Joint Lea

Subsidiaries of the Company.

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany TPI Europe

Form of Restricted Stock Unit Agreement (Performance Based).

Exhibit 10.19 RESTRICTED STOCK UNIT AWARD AGREEMENT (Performance-Based) THIS AGREEMENT (the “Agreement”), is made, effective as of [DATE] (the “Grant Date”) between Information Services Group, Inc., a Delaware corporation (the “Company”), and [NAME], an employee of the Company or an Affiliate of the Company, hereinafter referred to as the “Participant”. WHEREAS, the Company desires to grant the Pa

Results of Operations and Financial Condition

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) March 10, 2020 (March 10, 2020) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

Information Services Group Announces Fourth-Quarter 2019 Results

EX-99.1 2 tm2012169d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter 2019 Results · Reports fourth-quarter revenues of $66 million; net income of $2 million; GAAP EPS of $0.04; adjusted EBITDA of $10 million; adjusted

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 12) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

III / Information Services Group, Inc. / Private Capital Management, LLC - AMENDMENT NO. 2 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant t

Entry into a Material Definitive Agreement

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) December 4, 2019 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

Amendment to the 2016 Credit Agreement

Exhibit 10.1 Execution Version THIRD AMENDMENT AGREEMENT THIRD AMENDMENT AGREEMENT (this “Agreement”) dated as of December 4, 2019 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., Alsbridge Holdings, Inc., Alsbridge, Inc., Telewares, Inc., Outsour

III / Information Services Group, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 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 001-33287 INFORMATION SERVI

Results of Operations and Financial Condition

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) November 6, 2019 (November 6, 2019) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Third-Quarter Financial Results Reports revenues of $68.1 million, GAAP EPS of $0.04 and adjusted EPS of $0.09 Reports operating income of $5.7 million, up 68% versus prior year Delivers adjusted EBITDA of $10.3 m

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Third-Quarter Financial Results Reports revenues of $68.1 million, GAAP EPS of $0.04 and adjusted EPS of $0.09 Reports operating income of $5.7 million, up 68% versus prior year Delivers adjusted EBITDA of $10

Results of Operations and Financial Condition

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) August 5, 2019 (August 5, 2019) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

Information Services Group Announces Second-Quarter Financial Results Reports revenues of $67.3 million, operating income of $3.3 million Delivers adjusted EBITDA of $8.1 million, up more than 2X sequentially Reports GAAP EPS of $0.01 and adjusted EP

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Second-Quarter Financial Results Reports revenues of $67.3 million, operating income of $3.3 million Delivers adjusted EBITDA of $8.1 million, up more than 2X sequentially Reports GAAP EPS of $0.01 and adjuste

III / Information Services Group, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 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 001-33287 INFORMATION SERVICES G

III / Information Services Group, Inc. / Private Capital Management, LLC - AMENDMENT NO.1 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) April 1, 2019 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to wh

Current Report

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) July 1, 2019 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Numb

ISG Names Bruce Pfau to Board of Directors Former KPMG vice chairman to join board July 1

EXHIBIT 99.1 Press Contacts: Will Thoretz, ISG +1 203 517 3119 [email protected] Jim Baptiste, Matter Communications for ISG +1 978 518 4527 [email protected] ISG Names Bruce Pfau to Board of Directors Former KPMG vice chairman to join board July 1 STAMFORD, Conn., July 1, 2019 — Information Services Group (ISG) (Nasdaq: III), a leading global technology research and advisory firm, to

III / Information Services Group, Inc. 10-Q Quarterly Report 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 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 001-33287 INFORMATION SERVICES

Second Amendment to Credit Agreement, dated May 9, 2019 (previously filed as Exhibit 10.1 to the Registrant’s Form 10-Q filed with the SEC on May 10, 2019 (Commission File Number: 001-33287), and incorporated herein by reference).

Execution Version EXHIBIT 10.1 SECOND AMENDMENT AGREEMENT SECOND AMENDMENT AGREEMENT (this “Agreement”) dated as of May 9, 2019 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., Alsbridge Holdings, Inc., Alsbridge, Inc., Telewares, Inc., Outsourcin

Results of Operations and Financial Condition

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) May 9, 2019 (May 9, 2019) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commiss

Information Services Group Announces First-Quarter Financial Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces First-Quarter Financial Results · Reports first-quarter revenues of $65 million; net loss of $1 million, GAAP EPS of -$0.02; adjusted EBITDA of $4 million; adjusted EPS of $0.03 · Deleveraging continued with $

Current Report

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) April 30, 2019 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

III / Information Services Group, Inc. 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 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

III / Information Services Group, Inc. DEF 14A

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Power of Attorney.

EX-24.1 3 iii-20181231ex24165254a.htm EX-24.1 Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney‑in‑fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or ca

III / Information Services Group, Inc. 10-K (Annual Report)

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 December 31, 2018 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 001‑3328

Results of Operations and Financial Condition

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) March 14, 2019 (March 14, 2019) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of in

Information Services Group Announces Fourth-Quarter and Full-Year Financial Results

EX-99.1 2 a19-66181ex99d1.htm EX-99.1 Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203 517 3104 [email protected] Information Services Group Announces Fourth-Quarter and Full-Year Financial Results · Record fourth-quarter revenues of $67.9 million; operating income of $3.3 million; GAAP EPS loss of -$0.02; adjusted EBITD

III / Information Services Group, Inc. / Private Capital Management, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Information Services Group , Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to w

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 11) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

III / Information Services Group, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 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 001-33287 INFORMATION SERVI

Results of Operations and Financial Condition

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) November 8, 2018 (November 8, 2018) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

Information Services Group Announces Third-Quarter Financial Results Reports third-quarter revenues of $68.0 million Q3 net income of $4.0 million, up $2.6 million from prior year Adjusted EBITDA of $8.8 million GAAP EPS of $0.08, up from $0.03 in th

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Third-Quarter Financial Results Reports third-quarter revenues of $68.0 million Q3 net income of $4.0 million, up $2.6 million from prior year Adjusted EBITDA of $8.8 million GAAP EPS of $0.08, up from $0.03 i

Information Services Group Announces Second-Quarter and First-Half Financial Results Record second-quarter revenues of $71.0 million, up 4% from prior year Q2 operating income of $4.2 million, up $3.7 million from prior year Q2 adjusted EBITDA of $9.

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Second-Quarter and First-Half Financial Results Record second-quarter revenues of $71.0 million, up 4% from prior year Q2 operating income of $4.2 million, up $3.7 million from prior year Q2 adjusted EBITDA of

Results of Operations and Financial Condition

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) August 6, 2018 (August 6, 2018) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

III / Information Services Group, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2018 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 001-33287 INFORMATION SERVICES G

Current Report

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) July 26, 2018 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Num

ISG Names Todd D. Lavieri Vice Chairman Lavieri to retain leadership of firm’s Americas and Asia Pacific regions

Exhibit 99.1 Press Contacts: Will Thoretz, ISG +1 203 517 3119 [email protected] Jim Baptiste, Matter Communications for ISG +1 978 518 4527 [email protected] ISG Names Todd D. Lavieri Vice Chairman Lavieri to retain leadership of firm’s Americas and Asia Pacific regions STAMFORD, Conn., July 26, 2018 — Information Services Group (ISG) (Nasdaq: III), a leading global technology resear

III / Information Services Group, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 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 001-33287 INFORMATION SERVICES

Results of Operations and Financial Condition

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) May 9, 2018 (May 9, 2018) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commiss

Information Services Group Announces First-Quarter Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces First-Quarter Results · Reports largest revenue quarter ever at $68.9 million · Reports operating income of $1.8 million; fully diluted GAAP EPS of $0.00; adjusted EBITDA of $5.8 million; · Generates $9.5 mill

Current Report

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) April 26, 2018 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

III / Information Services Group, Inc. 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 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) o Defin

III / Information Services Group, Inc. DEF 14A

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First Amendment to the Amended and Restated Credit Agreement dated December 8, 2017.

Execution Version Exhibit 10.7 first AMENDMENT AGREEMENT FIRST AMENDMENT AGREEMENT (this “Agreement”) dated as of December 8, 2017 by and among (1) Information Services Group, Inc. (the “Borrower”), (2) International Advisory Holdings Corp., International Consulting Acquisition Corp., ISG Information Services Group Americas, Inc., TPI Eurosourcing, L.L.C. and Gala Acquisition Sub, Inc. (collective

Power of Attorney.

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Michael P. Connors as true and lawful attorney‑in‑fact and agent, with full power (including the full power of substitution and resubstitution) to sign for him and in his name, place and stead, in the capacity or capacities set forth below, (1) the Annual Repor

III / Information Services Group, Inc. 10-K (Annual Report)

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 December 31, 2017 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 001‑3328

Results of Operations and Financial Condition

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) March 14, 2018 (March 14, 2018) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

Information Services Group Announces Fourth-Quarter and Full-Year Financial Results

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Fourth-Quarter and Full-Year Financial Results · Reports record full-year 2017 revenues of $269.6 million, up 25%; operating income of $9.2 million, up $11.7 million; adjusted EBITDA of $33.5 million, up 69% ·

III / Information Services Group, Inc. / CONNORS MICHAEL P - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 10) Under the Securities Exchange Act of 1934 Information Services Group, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 45675Y104 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

III / Information Services Group, Inc. / Renaissance Technologies LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* INFORMATION SERVICES GROUP, INC. - (Name of Issuer) Common Stock, $0.001 par value - (Title of Class of Securities) 45675Y104 - (CUSIP Number) December 29, 2017 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to design

THRD / Tf Financial Corp / THOMSON HORSTMANN & BRYANT INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2*) (Name of Issuer) INFO SERVICES GROUP (Title of Class of Securities) Common Stock (CUSIP Number) 45675y104 Check the following box if a fee is being paid with this statement. (A fee is not required only if the filing person: (1) has a previous statement o

LETTER

Mail Stop 3233 November 21, 2017 Via E-mail David E. Berger Executive Vice President and Chief Financial Officer Information Services Group, Inc. Two Stamford Plaza 281 Tresser Boulevard Stamford, CT 06901 Re: Information Services Group, Inc. Form 10-K for the fiscal year ended December 31, 2016 Filed March 15, 2017 File No. 1-33287 Dear Mr. Berger: We have completed our review of your filing. We

Current Report

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) November 8, 2017 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File

Amendment to the Amended and Restated By-Laws, dated as of November 8, 2017 (previously filed as Exhibit 3.1 to the Registrant’s Form 8 K filed with the SEC on November 13, 2017 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 3.1 AMENDMENT TO THE AMENDED AND RESTATED BYLAWS OF INFORMATION SERVICES GROUP, INC. (the ?Corporation?) Pursuant to the approval granted by the Board of Directors of the Corporation in a meeting held on November 8, 2017, the Amended and Restated Bylaws (the ?Bylaws?) of the Corporation, are hereby amended as follows: 1. A new sentence is hereby added to Section 2.10 of the Bylaws, which s

Form of Indemnification Agreement for Directors and Officers (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on December 2, 2016 (Commission File No. 001-33287), and incorporated herein by reference).

Exhibit 10.1 FORM OF INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this ?Agreement?) is entered into as of [ ], 20[ ], by and between Information Services Group, Inc., a Delaware corporation (the ?Company?), and [ ] (?Indemnitee?). RECITALS A. Indemnitee provides a valuable service to the Company by serving as an officer of the Company and/or a member of the Board of Directors of the C

III / Information Services Group, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2017 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 001-33287 INFORMATION SERVI

Information Services Group Announces Third-Quarter Financial Results Record quarterly revenues of $68.3 million, up 30% from prior year Operating income of $3.5 million, up 33%, and net income of $1.4 million, up 89% Adjusted EBITDA of $9.6 million,

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Third-Quarter Financial Results Record quarterly revenues of $68.3 million, up 30% from prior year Operating income of $3.5 million, up 33%, and net income of $1.4 million, up 89% Adjusted EBITDA of $9.6 milli

Results of Operations and Financial Condition

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) November 8, 2017 (November 8, 2017) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction o

III / Information Services Group, Inc. ESP

VIA EDGAR AND COURIER Isaac Esquivel Staff Accountant Office of Real Estate and Commodities Securities and Exchange Commission Washington D.

LETTER

Mailstop 3233 October 11, 2017 Via E-Mail David E. Berger Executive Vice President and Chief Financial Officer Information Services Group, Inc. Two Stamford Plaza 281 Tresser Boulevard Stamford, CT 06901 Re: Information Services Group, Inc. Form 10-K for the fiscal year ended December 31, 2016 Filed March 15, 2017 Form 10-Q for the quarterly period ended June 30, 2017 Filed August 7, 2017 Form 8-K

Information Services Group Announces Second-Quarter and First-Half Financial Results Record second-quarter revenues of $68.0 million, up 15% from prior year Q2 operating income of $0.5 million impacted by severance, integration costs Adjusted Q2 EBIT

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces Second-Quarter and First-Half Financial Results Record second-quarter revenues of $68.0 million, up 15% from prior year Q2 operating income of $0.5 million impacted by severance, integration costs Adjusted Q2

Information Services Group 8-K (Current Report/Significant Event)

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) August 7, 2017 (August 7, 2017) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (C

III / Information Services Group, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2017 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 001-33287 INFORMATION SERVICES G

POWER OF ATTORNEY June 5, 2017

Exhibit 24 POWER OF ATTORNEY June 5, 2017 Know all by these presents, that the undersigned hereby constitutes and appoints each of David E.

May 17, 2017.

As filed with the Securities and Exchange Commission on May 17, 2017. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INFORMATION SERVICES GROUP, INC. (Exact name of registrant as specified in its charter) Delaware 20-5261587 (State or other jurisdiction of incorporation or organization)

AMENDED AND RESTATED INFORMATION SERVICES GROUP, INC. 2007 EQUITY AND INCENTIVE AWARD PLAN (as amended by the 2017 amendment)

Exhibit 99.1 AMENDED AND RESTATED INFORMATION SERVICES GROUP, INC. 2007 EQUITY AND INCENTIVE AWARD PLAN (as amended by the 2017 amendment) 1. Purpose of the Plan The purpose of the Plan is to aid Information Services Group, Inc., a Delaware corporation (?ISG?), and its Affiliates in recruiting and retaining key employees, directors or other independent contractors and to motivate such employees, d

Employment Letter for Thomas Kucinski, dated May 15, 2017 (previously filed as Exhibit 10.1 to the Registrant’s Form 8-K filed with the SEC on May 15, 2017 (Commission File Number: 001-33287), and incorporated herein by reference).

Exhibit 10.1 Michael P. Connors Chairman and Chief Executive Officer Personal & Confidential May 15, 2017 Mr. Thomas Kucinski 281 Tresser Blvd. Stamford, CT 06901 Dear Tom, I am pleased to confirm our offer for you to become Executive Vice President and Chief Human Resources Officer (CHRO) reporting to me. You will also become a member of our ISG Executive Board (IEB). This appointment is effectiv

Current Report

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) May 15, 2017 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Numb

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2017 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 001-33287 INFORMATION SERVICES

Results of Operations and Financial Condition

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) May 8, 2017 (May 8, 2017) Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commiss

Information Services Group Announces First-Quarter Financial Results Record first-quarter revenues of $66.6 million, up 35% from prior year Operating income of $1.2 million, up from $0.1 million in prior year Adjusted EBITDA of $7.0 million, more tha

Exhibit 99.1 Press Contact: Will Thoretz +1 203 517 3119 [email protected] Investor Contact: David Berger +1 203-517-3104 [email protected] Information Services Group Announces First-Quarter Financial Results Record first-quarter revenues of $66.6 million, up 35% from prior year Operating income of $1.2 million, up from $0.1 million in prior year Adjusted EBITDA of $7.0 million, more

Submission of Matters to a Vote of Security Holders

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) April 27, 2017 Information Services Group, Inc. (Exact name of registrant as specified in its charter) Delaware 001-33287 20-5261587 (State or other jurisdiction of (Commission File Nu

Amended and Restated 2007 Equity and Incentive Award Plan (previously filed as Appendix A to the Registrant’s Definitive Proxy Statement filed with the SEC on March 17, 2017 (Commission File Number: 001-33287), and incorporated herein by reference).

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Subsidiaries of the Company (previously filed as Exhibit 21.1 to the Registrant’s Form 10-K filed with the SEC on March 15, 2017 (Commission File Number: 001 33287), and incorporated herein by reference).

Exhibit 21.1 List of Subsidiaries Subsidiary Jurisdiction of Organization Information Services Group, Inc. Delaware International Advisory Holdings Corp. Delaware International Consulting Acquisition Corp. Delaware ISG Information Services Group Americas, Inc. Texas TPI Eurosourcing, L.L.C. Texas TPI Advisory Services India Pvt. Ltd. India Information Services Group Germany GmbH Germany TPI Europe