F5, Inc.
US ˙ NasdaqGS ˙ US3156161024

SecurityFFIV / F5, Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership177,302 shares
Latest Disclosed Value $ 51,298,788
Boston Trust Walden Corp reports 2.66% decrease in ownership of FFIV / F5, Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 177,302 shares of F5, Inc. (US:FFIV) valued at $51,298,788 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 182,149 shares of F5, Inc.. This represents a change in shares of -2.66% during the quarter. The current value of the position is $71,924,329 USD.

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)
2026-04-24 2026-03-31 13F F5 COMMON STOCK 315616102 177,302 -4,847 -2.66 51,299 10.33 0.2522
2026-01-28 2025-12-31 13F F5 COMMON STOCK 315616102 182,149 -1,834 -1.00 46,495 -21.81 0.3509
2025-10-17 2025-09-30 13F F5 COMMON STOCK 315616102 183,983 -26,053 -12.40 59,461 -3.81 0.4363
2025-07-28 2025-06-30 13F F5 COMMON STOCK 315616102 210,036 15,189 7.80 61,818 19.15 0.4409
2025-04-21 2025-03-31 13F F5 COMMON STOCK 315616102 194,847 27 0.01 51,882 5.90 0.3791
2025-01-24 2024-12-31 13F F5 COMMON STOCK 315616102 194,820 7,341 3.92 48,991 18.67 0.3438
2024-10-24 2024-09-30 13F F5 COMMON STOCK 315616102 187,479 -145,134 -43.63 41,283 -27.94 0.2872
2024-07-19 2024-06-30 13F F5 COMMON STOCK 315616102 332,613 10,551 3.28 57,286 -6.18 0.4249
2024-04-22 2024-03-31 13F F5 COMMON STOCK 315616102 322,062 -42,470 -11.65 61,060 -6.41 0.4355
2024-01-24 2023-12-31 13F F5 COMMON STOCK 315616102 364,532 62,938 20.87 65,244 34.25 0.4922
2023-10-18 2023-09-30 13F F5 COMMON STOCK 315616102 301,594 463 0.15 48,599 10.34 0.4073
2023-07-24 2023-06-30 13F F5 COMMON STOCK 315616102 301,131 18,595 6.58 44,043 7.00 0.3612
2023-04-19 2023-03-31 13F F5 COMMON STOCK 315616102 282,536 45,362 19.13 41,163 20.94 0.3553
2023-01-20 2022-12-31 13F F5 COMMON STOCK 315616102 237,174 45,043 23.44 34,037 22.40 0.2993
2022-10-19 2022-09-30 13F F5 COMMON STOCK 315616102 192,131 -1,380 -0.71 27,807 -6.11 0.2755
2022-07-22 2022-06-30 13F F5 COMMON STOCK 315616102 193,511 1,958 1.02 29,615 -26.01 0.2798
2022-04-20 2022-03-31 13F F5 COMMON STOCK 315616102 191,553 19,784 11.52 40,025 -4.78 0.3306
2022-01-21 2021-12-31 13F F5 COMMON STOCK 315616102 171,769 -2,473 -1.42 42,034 21.36 0.3375
2021-10-25 2021-09-30 13F F5 NETWORKS COMMON STOCK 315616102 174,242 -2,365 -1.34 34,636 5.07 0.3067
2021-07-22 2021-06-30 13F F5 NETWORKS COMMON STOCK 315616102 176,607 9,973 5.98 32,966 -5.17 0.2931
2021-04-21 2021-03-31 13F F5 NETWORKS COMMON STOCK 315616102 166,634 17,200 11.51 34,763 32.22 0.3366
2021-01-15 2020-12-31 13F F5 NETWORKS COMMON STOCK 315616102 149,434 328 0.22 26,291 43.62 0.2805
2020-10-14 2020-09-30 13F F5 NETWORKS COMMON STOCK 315616102 149,106 1,094 0.74 18,306 -11.33 0.2280
2020-07-23 2020-06-30 13F F5 NETWORKS COMMON STOCK 315616102 148,012 2,548 1.75 20,645 33.10 0.2788
2020-04-24 2020-03-31 13F/A-1 F5 NETWORKS COMMON STOCK 315616102 145,464 262 0.18 15,511 -23.51 0.2472
2020-04-21 2020-03-31 13F F5 NETWORKS COMMON STOCK 315616102 156,644 11,442 16,703 148,110.5639
2020-01-10 2019-12-31 13F F5 NETWORKS COMMON STOCK 315616102 145,202 3,914 2.77 20,278 2.21 0.2360
2019-10-21 2019-09-30 13F F5 NETWORKS COMMON STOCK 315616102 141,288 10,405 7.95 19,840 4.09 0.2494
2019-07-25 2019-06-30 13F F5 NETWORKS COMMON STOCK 315616102 130,883 4,241 3.35 19,060 -4.10 0.2480
2019-04-16 2019-03-31 13F F5 NETWORKS COMMON STOCK 315616102 126,642 4,517 3.70 19,874 0.43 0.2706
2019-01-17 2018-12-31 13F F5 NETWORKS COMMON STOCK 315616102 122,125 11,602 10.50 19,788 -10.22 0.3148
2018-10-23 2018-09-30 13F F5 NETWORKS COMMON STOCK 315616102 110,523 -5,740 -4.94 22,041 9.93 0.3036
2018-07-25 2018-06-30 13F F5 NETWORKS COMMON STOCK 315616102 116,263 6,596 6.01 20,050 26.43 0.2942
2018-04-13 2018-03-31 13F F5 NETWORKS COMMON STOCK 315616102 109,667 -176 -0.16 15,859 10.02 0.2406
2018-01-29 2017-12-31 13F F5 NETWORKS COMMON STOCK 315616102 109,843 23,359 27.01 14,414 38.25 0.2113
2017-10-13 2017-09-30 13F F5 NETWORKS COMMON STOCK 315616102 86,484 516 0.60 10,426 -4.55 0.1623
2017-07-19 2017-06-30 13F F5 NETWORKS COMMON STOCK 315616102 85,968 2,858 3.44 10,923 -7.82 0.1755
2017-04-24 2017-03-31 13F F5 NETWORKS COMMON STOCK 315616102 83,110 -1,037 -1.23 11,849 -2.69 0.1846
2017-02-07 2016-12-31 13F/A-1 F5 NETWORKS COMMON STOCK 315616102 84,147 2,643 3.24 12,177 19.86 0.1920
2017-02-01 2016-12-31 13F F5 NETWORKS COMMON STOCK 315616102 84,147 12,177
2016-10-17 2016-09-30 13F F5 NETWORKS COMMON STOCK 315616102 81,504 187 0.23 10,159 9.73 0.1675
2016-08-09 2016-06-30 13F F5 NETWORKS COMMON STOCK 315616102 81,317 -1,470 -1.78 9,258 5.65 0.1581
2016-04-19 2016-03-31 13F F5 NETWORKS COMMON STOCK 315616102 82,787 1,170 1.43 8,763 10.73 0.1526
2016-01-21 2015-12-31 13F F5 NETWORKS COMMON STOCK 315616102 81,617 1,722 2.16 7,914 -14.46 0.1468
2015-10-29 2015-09-30 13F F5 NETWORKS COMMON STOCK 315616102 79,895 25,272 46.27 9,252 40.74 0.1545
2015-07-17 2015-06-30 13F F5 NETWORKS COMMON STOCK 315616102 54,623 5,139 10.39 6,574 15.58 0.1002
2015-04-15 2015-03-31 13F F5 NETWORKS COMMON STOCK 315616102 49,484 49,484 0.00 5,688 0.0844
2015-01-28 2014-12-31 13F F5 NETWORKS COMMON STOCK 315616102 0 -49,901 -100.00 0 -100.00
2014-10-23 2014-09-30 13F F5 NETWORKS COMMON STOCK 315616102 49,901 -503 -1.00 5,925 5.48 0.0915
2014-08-01 2014-06-30 13F F5 NETWORKS COMMON STOCK 315616102 50,404 269 0.54 5,617 5.07 0.0816
2014-04-11 2014-03-31 13F F5 NETWORKS COMMON STOCK 315616102 50,135 2,429 5.09 5,346 23.35 0.0794
2014-02-11 2013-12-31 13F F5 NETWORKS COMMON STOCK 315616102 47,706 3,261 7.34 4,334 13.63 0.0632
2013-11-15 2013-09-30 13F F5 NETWORKS COMMON STOCK 315616102 44,445 844 1.94 3,814 27.13 0.0584
2013-08-08 2013-06-30 13F F5 NETWORKS COMMON STOCK 315616102 43,601 43,601 3,000 0.0484
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.