Security key
317585404
FINANCIAL INSTITUTIONS INC - Common Stock (FISI)
CUSIP: 317585404
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 15,858,949
- Total 13F value
- $502,797,788
- Share change
- +43,678
- SEC-reported price per share
- $31.71
- Number of holders
- 150
- Value change
- +$1,857,181
- Number of buys
- 78
- Number of sells
- 64
- Shares outstanding
- 19,668,627
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
150
Top holders
10
FISI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
FINANCIAL INSTITUTIONS INC SEC filings
FINANCIAL INSTITUTIONS INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 317585404
Recent filing periods:
Ownership snapshot
Top reported holders of FISI - FINANCIAL INSTITUTIONS INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PL Capital Advisors, LLC
Disclosed value leader
PL Capital Advisors, LLC
Comparable rows
15/15
Latest evidence
20 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 8.9%
13D/G row: PL Capital Advisors, LLC
Showing 1-6 of 15 holder rows.
Quick read
PL Capital Advisors, LLC leads the comparable SEC ownership view at 8.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PL Capital Advisors, LLC's linked filing trail.
Comparable ownership
Top 5
PL Capital Advisors, LLC
8.9%
WELLINGTON MANAGEMENT GROUP LLP
4.6%
Martin Kearney Birmingham
0.81%
Donald Boswell
0.08%
Samuel J. Burruano Jr.
0.08%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PL Capital Advisors, LLC |
13F
13D/G
Company · LASHLEY RICHARD J
|
8.9%
from 13D/G
|
$56,192,995
1,802,791 shares
|
— | 31 Dec 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
4.6%
from 13D/G
|
$32,706,525
1,049,295 shares
|
— | 31 Dec 2025 |
| Martin Kearney Birmingham |
3/4/5
President & CEO
|
0.81%
|
$5,456,786
160,164 shares
|
— | 20 Mar 2026 |
| Donald Boswell |
3/4/5
Director
|
0.08%
|
$394,247
16,656 shares
|
— | 28 May 2025 |
| Samuel J. Burruano Jr. |
3/4/5
Chief Legal Officer
|
0.08%
|
$519,158
15,238 shares
|
— | 20 Mar 2026 |
| William Jack Plants II |
3/4/5
Chief Financial Officer
|
0.08%
|
$502,973
14,763 shares
|
+$19,879 | 20 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
150
Shares
15,858,949
Rows available
150
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
149
Q1 2026 holders
150
Holder diff
1
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend