Cisco Systems, Inc.
CH ˙ SWX ˙ US17275R1023
SecurityCH:CSCO / Cisco Systems, Inc.
InstitutionPenbrook Management LLC
Latest Disclosed Ownership18,350 shares
Latest Disclosed Value $ 1,423,776
Penbrook Management LLC ownership in CSCO / Cisco Systems, Inc.

On April 21, 2026 - Penbrook Management LLC filed a 13F-HR form disclosing ownership of 18,350 shares of Cisco Systems, Inc. (CH:CSCO) valued at $1,423,776 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 6, 2026 disclosing 18,350 shares of Cisco Systems, Inc.. This represents a change in shares of 0.00% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-21 2026-03-31 13F CISCO SYS INC COM Stock 17275R102 18,350 0 0.00 1,424 0.71 1.0781
2026-01-06 2025-12-31 13F CISCO SYS INC COM Stock 17275R102 18,350 0 0.00 1,414 12.59 0.9750
2025-10-22 2025-09-30 13F CISCO SYS INC COM Stock 17275R102 18,350 0 0.00 1,256 -1.41 0.8766
2025-07-28 2025-06-30 13F/A-1 CISCO SYS INC COM Stock 17275R102 18,350 0 0.00 1,273 12.46 0.9573
2025-07-25 2025-06-30 13F CISCO SYS Stock 17275R102 18,350 0 1,132 0.8559
2025-04-01 2025-03-31 13F CISCO SYS Stock 17275R102 18,350 0 0.00 1,132 4.24 0.8559
2025-01-23 2024-12-31 13F CISCO SYS Stock 17275R102 18,350 -1,050 -5.41 1,086 5.23 0.7410
2024-10-15 2024-09-30 13F CISCO SYS Stock 17275R102 19,400 0 0.00 1,032 12.05 0.6712
2024-07-24 2024-06-30 13F CISCO SYS Stock 17275R102 19,400 0 0.00 922 -4.86 0.5626
2024-04-18 2024-03-31 13F CISCO SYS Stock 17275R102 19,400 0 0.00 968 -1.22 0.6001
2024-01-16 2023-12-31 13F CISCO SYS Stock 17275R102 19,400 -500 -2.51 980 -8.33 0.6585
2023-10-10 2023-09-30 13F CISCO SYS Stock 17275R102 19,900 -2,000 -9.13 1,070 -5.65 0.7839
2023-07-17 2023-06-30 13F CISCO SYS Stock 17275R102 21,900 0 0.00 1,133 -0.96 0.8213
2023-04-20 2023-03-31 13F CISCO SYS Stock 17275R102 21,900 0 0.00 1,145 9.68 0.8772
2023-01-24 2022-12-31 13F CISCO SYS Stock 17275R102 21,900 -4,000 -15.44 1,043 0.68 0.8892
2022-10-31 2022-09-30 13F CISCO SYS Stock 17275R102 25,900 -200 -0.77 1,036 -6.92 0.8916
2022-07-29 2022-06-30 13F CISCO SYS Stock 17275R102 26,100 0 0.00 1,113 -23.51 0.8777
2022-04-26 2022-03-31 13F CISCO SYS INC COM Stock 17275R102 26,100 1,000 3.98 1,455 -8.55 0.9439
2022-01-10 2021-12-31 13F CISCO SYS Stock 17275R102 25,100 100 0.40 1,591 16.90 0.9586
2021-10-26 2021-09-30 13F CISCO SYS INC COM Stock 17275R102 25,000 -100 -0.40 1,361 2.33 0.8458
2021-07-27 2021-06-30 13F CISCO SYS INC COM COM 17275R102 25,100 100 0.40 1,330 2.86 0.7972
2021-05-06 2021-03-31 13F/A-2 CISCO SYS Stock 17275R102 25,000 0 0.00 1,293 15.55 0.9305
2021-05-05 2021-03-31 13F/A-1 CISCO SYS Stock 17275R102 25,000 0 1,293 0.9380
2021-04-16 2021-03-31 13F CISCO SYS Stock 17275R102 24,000 -1,000 943 1.0979
2022-04-25 2020-12-31 13F/A-1 CISCO SYS INC COM Stock 17275R102 25,000 0 0.00 1,119 13.60 0.8619
2021-01-27 2020-12-31 13F CISCO SYS COM 17275R102 25,000 0 1,119 0.7889
2020-10-23 2020-09-30 13F CISCO SYS COM 17275R102 25,000 1,500 6.38 985 -10.13 0.8539
2020-07-28 2020-06-30 13F CISCO SYSTEMS COM 17275R102 23,500 0 0.00 1,096 18.61 1.0781
2020-04-14 2020-03-31 13F CISCO SYSTEMS COM 17275R102 23,500 800 3.52 924 -15.15 1.1833
2020-01-16 2019-12-31 13F CISCO SYSTEMS COM 17275R102 22,700 0 0.00 1,089 -2.94 1.0611
2019-10-11 2019-09-30 13F CISCO SYSTEMS COM 17275R102 22,700 -4,000 -14.98 1,122 -23.20 1.2174
2019-07-15 2019-06-30 13F CISCO SYSTEMS COM 17275R102 26,700 0 0.00 1,461 1.32 1.5675
2019-04-24 2019-03-31 13F CISCO SYSTEMS COM 17275R102 26,700 0 0.00 1,442 24.63 1.4994
2019-02-01 2018-12-31 13F CISCO SYSTEMS COM 17275R102 26,700 -1,000 -3.61 1,157 -14.17 1.3204
2018-10-23 2018-09-30 13F CISCO SYSTEMS COM 17275R102 27,700 -450 -1.60 1,348 11.31 1.2911
2018-07-30 2018-06-30 13F CISCO SYSTEMS COM 17275R102 28,150 0 0.00 1,211 0.33 1.1648
2018-04-27 2018-03-31 13F CISCO SYSTEMS COM 17275R102 28,150 -100 -0.35 1,207 11.55 1.2068
2018-02-21 2017-12-31 13F CISCO SYSTEMS COM 17275R102 28,250 -2,550 -8.28 1,082 10.75 0.9741
2016-10-27 2016-09-30 13F CISCO SYSTEMS COM 17275R102 30,800 -100 -0.32 977 10.15 1.0527
2016-08-05 2016-06-30 13F CISCO SYSTEMS COM 17275R102 30,900 0 0.00 887 0.80 0.9780
2016-04-21 2016-03-31 13F CISCO SYSTEMS COM 17275R102 30,900 0 0.00 880 4.89 0.9689
2016-01-29 2015-12-31 13F CISCO SYSTEMS COM 17275R102 30,900 -150 -0.48 839 2.94 0.8605
2015-11-12 2015-09-30 13F CISCO SYSTEMS COM 17275R102 31,050 0 0.00 815 -4.45 0.8630
2015-08-04 2015-06-30 13F CISCO SYSTEMS COM 17275R102 31,050 0 0.00 853 -0.23 0.8101
2015-04-27 2015-03-31 13F CISCO SYSTEMS COM 17275R102 31,050 31,050 0.00 855 0.23 0.7595
2015-01-28 2014-12-31 13F CISCO SYSTEMS COM 17275R102 0 -29,250 -100.00 0 -100.00
2014-10-16 2014-09-30 13F CISCO SYSTEMS COM 17275R102 29,250 0 0.00 736 1.24 0.6786
2014-08-04 2014-06-30 13F CISCO SYSTEMS COM 17275R102 29,250 0 0.00 727 10.82 0.6420
2014-05-07 2014-03-31 13F/A-1 CISCO SYSTEMS COM 17275R102 29,250 0 0.00 656 0.00 0.6203
2014-05-02 2014-03-31 13F CISCO SYSTEMS COM 17275R102 29,250 656
2014-03-25 2013-12-31 13F CISCO SYSTEMS COM 17275R102 29,250 29,250 656 0.6366
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.