Financial Institutions, Inc.
US ˙ NasdaqGS ˙ US3175854047

SecurityFISI / Financial Institutions, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership16,879 shares
Latest Disclosed Value $ 526,124
Sei Investments Co reports 13.11% increase in ownership of FISI / Financial Institutions, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 16,879 shares of Financial Institutions, Inc. (US:FISI) valued at $526,118 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 14,922 shares of Financial Institutions, Inc.. This represents a change in shares of 13.11% during the quarter. The current value of the position is $618,109 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)
2026-02-13 2025-12-31 13F FINANCIAL INSTNS COM 317585404 16,879 1,957 13.11 526 29.88 0.0005
2025-11-13 2025-09-30 13F FINANCIAL INSTNS COM 317585404 14,922 84 0.57 406 6.30 0.0004
2025-08-14 2025-06-30 13F FINANCIAL INSTNS COM 317585404 14,838 91 0.62 381 3.53 0.0004
2025-05-14 2025-03-31 13F/A-1 FINANCIAL INSTNS COM 317585404 14,747 4,800 48.26 368 35.79 0.0005
2025-05-13 2025-03-31 13F FINANCIAL INSTNS COM 317585404 9,947 0 271 0.0003
2025-02-11 2024-12-31 13F FINANCIAL INSTNS COM 317585404 9,947 -2,373 -19.26 271 -13.42 0.0003
2024-11-12 2024-09-30 13F FINANCIAL INSTNS COM 317585404 12,320 12,320 314 0.0004
2023-08-11 2023-06-30 13F FINANCIAL INSTNS COM 317585404 0 -19,634 -100.00 0 -100.00
2023-05-12 2023-03-31 13F FINANCIAL INSTNS COM 317585404 19,634 1,940 10.96 379 -12.30 0.0007
2023-02-10 2022-12-31 13F FINANCIAL INSTNS COM 317585404 17,694 -1,162 -6.16 431 -5.07 0.0010
2022-11-14 2022-09-30 13F FINANCIAL INSTNS COM 317585404 18,856 8,022 74.04 454 60.99 0.0010
2022-08-15 2022-06-30 13F FINANCIAL INSTNS COM 317585404 10,834 -9,013 -45.41 282 -52.84 0.0006
2022-05-13 2022-03-31 13F FINANCIAL INSTNS COM 317585404 19,847 12,527 171.13 598 157.76 0.0012
2022-02-14 2021-12-31 13F FINANCIAL INSTNS COM 317585404 7,320 -16,372 -69.10 232 -68.00 0.0004
2021-11-12 2021-09-30 13F FINANCIAL INSTNS COM 317585404 23,692 -3,010 -11.27 725 -9.37 0.0015
2021-08-06 2021-06-30 13F FINANCIAL INSTNS COM 317585404 26,702 647 2.48 800 21.40 0.0018
2021-05-12 2021-03-31 13F FINANCIAL INSTNS COM 317585404 26,055 -3,700 -12.43 659 -1.49 0.0017
2021-02-08 2020-12-31 13F FINANCIAL INSTNS COM 317585404 29,755 15,912 114.95 669 214.08 0.0017
2020-12-04 2020-09-30 13F/A-1 FINANCIAL INSTNS COM 317585404 13,843 1,876 15.68 213 -4.48 0.0006
2020-11-06 2020-09-30 13F FINANCIAL INSTNS COM 317585404 13,843 1,876 213 512.8566
2020-08-17 2020-06-30 13F/A-1 FINANCIAL INSTNS COM 317585404 11,967 -2,381 -16.59 223 -14.23 0.0007
2020-08-11 2020-06-30 13F FINANCIAL INSTNS COM 317585404 9,519 -4,829 306 830.0413
2020-05-14 2020-03-31 13F FINANCIAL INSTNS COM 317585404 14,348 127 0.89 260 -43.11 0.0010
2020-02-06 2019-12-31 13F FINANCIAL INSTNS COM 317585404 14,221 -4,640 -24.60 457 -19.82 0.0014
2019-11-12 2019-09-30 13F FINANCIAL INSTNS COM 317585404 18,861 2,744 17.03 570 21.28 0.0015
2019-08-14 2019-06-30 13F FINANCIAL INSTNS COM 317585404 16,117 1,777 12.39 470 20.51 0.0015
2019-05-15 2019-03-31 13F FINANCIAL INSTNS COM 317585404 14,340 14,340 390 0.0013
2019-02-13 2018-12-31 13F FINANCIAL INSTNS COM 317585404 0 -2,609 -100.00 0 -100.00
2018-11-08 2018-09-30 13F FINANCIAL INSTNS COM 317585404 2,609 -587 -18.37 74 -29.52 0.0003
2018-08-03 2018-06-30 13F FINANCIAL INSTNS COM 317585404 3,196 914 40.05 105 54.41 0.0004
2018-05-11 2018-03-31 13F FINANCIAL INSTNS COM 317585404 2,282 993 77.04 68 70.00 0.0003
2018-02-08 2017-12-31 13F FINANCIAL INSTNS COM 317585404 1,289 81 6.71 40 14.29 0.0001
2017-11-06 2017-09-30 13F FINANCIAL INSTNS COM 317585404 1,208 389 47.50 35 40.00 0.0001
2017-07-31 2017-06-30 13F FINANCIAL INSTNS COM 317585404 819 569 227.60 25 177.78 0.0001
2017-05-05 2017-03-31 13F FINANCIAL INSTNS COM 317585404 250 250 9 0.0000
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.