Comparable stake leader
PL Capital Advisors, LLC
SEC ownership of FINANCIAL INSTITUTIONS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000862831.
Disclosed value leader
PL Capital Advisors, LLC
Comparable rows
50/50
Latest evidence
02 Sep 2026
- Public ticker
- FISI on Nasdaq, FIISO, FIISP on OTC
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
PL Capital Advisors, LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
PL Capital Advisors, LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
02 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000862831
- Issuer location
- Warsaw, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of FINANCIAL INSTITUTIONS INC (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
50/50
Latest evidence
02 Sep 2026
13F
13D/G
3/4/5
Lead comparable stake: 8.9%
13D/G row: PL Capital Advisors, LLC
Showing 1-8 of 50 holder rows.
Quick read
PL Capital Advisors, LLC leads the comparable SEC ownership view at 8.9%.
50 of 50 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%
BlackRock, Inc.
8.3%
DIMENSIONAL FUND ADVISORS LP
5.1%
WELLINGTON MANAGEMENT GROUP LLP
4.6%
Martin Kearney Birmingham
0.81%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 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
|
$70,773,495
1,816,102 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
8.3%
from 13D/G
|
$64,973,107
1,667,260 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
5.1%
|
$39,067,386
1,002,481 shares
|
-$104,130 | 30 Jun 2026 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
4.6%
|
$30,481,688
900,493 shares
|
-$5,036,948 | 31 Mar 2026 |
| Martin Kearney Birmingham |
3/4/5
President & CEO
|
0.81%
|
$5,456,786
160,164 shares
|
— | 20 Mar 2026 |
| Robert M. Glaser |
3/4/5
Director
|
0.26%
|
$1,611,914
50,833 shares
|
— | 20 May 2026 |
| Robert N. Latella |
3/4/5
Director
|
0.25%
|
$1,549,001
48,849 shares
|
— | 20 May 2026 |
| Susan R. Holliday |
3/4/5
Director
|
0.22%
|
$1,353,319
42,678 shares
|
— | 20 May 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.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$44,668.
Buys
$44,668
Insiders: 2
Sells
$0
Insiders: 0
Net
+$44,668
Shares: +1,268
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 1,268
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 608 | 0 | $24,789 | $0 | +$24,789 |
| 3-6 | 660 | 0 | $19,879 | $0 | +$19,879 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 29 reporting-owner rows connected to FINANCIAL INSTITUTIONS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
29
Largest Forms 3/4/5 holder
Martin Kearney Birmingham
Net 12M change
+$44,668
Latest report
02 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Martin Kearney Birmingham | President & CEO | $5,456,786 | Mixed | 20 Mar 2026 | ||
| Robert M. Glaser | Director | $1,611,914 | Mixed | 20 May 2026 | ||
| Robert N. Latella | Director | $1,549,001 | Mixed | 20 May 2026 | ||
| Susan R. Holliday | Director | $1,353,319 | Mixed | 20 May 2026 | ||
| Andrew W. Dorn Jr. | Director | $1,238,782 | Mixed | 20 May 2026 | ||
| Samuel M. Gullo | Director | $1,021,000 | Filing P/S | 13 Dec 2024 | ||
| Kim E. VanGelder | Director | $962,588 | Mixed | 20 May 2026 | ||
| Dawn H. Burlew | Director | $705,610 | Mixed | 20 May 2026 | ||
| Mark Zupan | Director | $648,643 | +$24,789 | +4% | Filing P/S | 02 Sep 2026 |
| Samuel J. Burruano Jr. | Chief Legal Officer | $519,158 | Mixed | 20 Mar 2026 | ||
| William Jack Plants II | Chief Financial Officer | $502,973 | +$19,879 | +4.1% | Mixed | 20 Mar 2026 |
| Donald Boswell | Director | $394,247 | Mixed | 28 May 2025 | ||
| Laurie R. Collins | Chief Human Resources Officer | $286,016 | Mixed | 20 Mar 2026 | ||
| Kevin B. Quinn | Chief Comm Banking Officer | $239,818 | Mixed | 20 Mar 2026 | ||
| Bruce W. Harting | Director | $235,319 | Mixed | 20 May 2026 | ||
| Angela J. Panzarella | Director | $217,435 | Mixed | 20 May 2026 | ||
| Justin K. Bigham | Executive Vice President | $195,560 | Mixed | 04 May 2023 | ||
| Sean M. Willett | Executive Vice President | $155,206 | Mixed | 21 Mar 2023 | ||
| Sonia M. Dumbleton | Senior Vice President | $146,192 | Mixed | 19 Mar 2024 | ||
| Gary A. Pacos | Chief Risk Officer | $118,325 | Mixed | 20 Mar 2026 |
Recent insider transactions for FINANCIAL INSTITUTIONS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Mark Zupan | FISI | Common Stock | Purchase | 3.97% | $24,789 | $40.77 | 608 | 15,909 | 02 Sep 2026 | Direct |
| Susan R. Holliday | FISI | Common Stock | Award | 3.17% | 1,282 | 41,678 | 20 May 2026 | Direct | ||
| Andrew W. Dorn Jr. | FISI | Common Stock | Award | 3.39% | 1,282 | 39,066 | 20 May 2026 | Direct | ||
| Kim E. VanGelder | FISI | Common Stock | Award | 4.41% | 1,282 | 30,356 | 20 May 2026 | Direct | ||
| Bruce W. Harting | FISI | Common Stock | Award | 20.9% | 1,282 | 7,421 | 20 May 2026 | Direct | ||
| Mark Zupan | FISI | Common Stock | Award | 9.14% | 1,282 | 15,301 | 20 May 2026 | Direct | ||
| Dawn H. Burlew | FISI | Common Stock | Award | 7.72% | 1,595 | 22,252 | 20 May 2026 | Direct | ||
| Angela J. Panzarella | FISI | Common Stock | Award | 47.5% | 2,207 | 6,857 | 20 May 2026 | Direct | ||
| Robert N. Latella | FISI | Common Stock | Award | 4.06% | 1,282 | 32,849 | 20 May 2026 | Direct | ||
| Robert M. Glaser | FISI | Common Stock | Award | 2.67% | 1,282 | 49,333 | 20 May 2026 | Direct | ||
| David Bovenzi | FISI | Common Stock | Award | 1,673 | 1,673 | 20 May 2026 | Direct | |||
| Robert L. Schrader | FISI | Common Stock | Award | 94.2% | 1,282 | 2,643 | 20 May 2026 | Direct | ||
| Steven C. Finch | FISI | Common Stock | Award | 1,673 | 1,673 | 20 May 2026 | Direct | |||
| William Jack Plants II | FISI | Common Stock | Tax liability | -11.5% | -1,044 | 8,013 | 20 Mar 2026 | Direct | ||
| William Jack Plants II | FISI | Common Stock | Options Exercise | 47% | 2,898 | 9,057 | 20 Mar 2026 | Direct | ||
| William Jack Plants II | FISI | Restricted Stock Unit | Options Exercise | -100% | -2,898 | 0 | 20 Mar 2026 | Direct | ||
| Gary A. Pacos | FISI | Common Stock | Tax liability | -19.3% | -829 | 3,473 | 20 Mar 2026 | Direct | ||
| Gary A. Pacos | FISI | Common Stock | Options Exercise | 115.1% | 2,302 | 4,302 | 20 Mar 2026 | Direct | ||
| Gary A. Pacos | FISI | Restricted Stock Unit | Options Exercise | -100% | -2,302 | 0 | 20 Mar 2026 | Direct | ||
| Kevin B. Quinn | FISI | Common Stock | Tax liability | -12.2% | -967 | 6,992 | 20 Mar 2026 | Direct | ||
| Kevin B. Quinn | FISI | Common Stock | Options Exercise | 50.9% | 2,684 | 7,959 | 20 Mar 2026 | Direct | ||
| Kevin B. Quinn | FISI | Restricted Stock Unit | Options Exercise | -100% | -2,684 | 0 | 20 Mar 2026 | Direct | ||
| Sandra L. Byers | FISI | Common Stock | Options Exercise | 47.3% | 690 | 2,150 | 20 Mar 2026 | Direct | ||
| Sandra L. Byers | FISI | Restricted Stock Unit | Options Exercise | -100% | -690 | 0 | 20 Mar 2026 | Direct | ||
| Samuel J. Burruano Jr. | FISI | Common Stock | Tax liability | -5.4% | -870 | 15,238 | 20 Mar 2026 | Direct | ||
| Samuel J. Burruano Jr. | FISI | Common Stock | Options Exercise | 17.6% | 2,416 | 16,108 | 20 Mar 2026 | Direct | ||
| Samuel J. Burruano Jr. | FISI | Restricted Stock Units | Options Exercise | -100% | -2,416 | 0 | 20 Mar 2026 | Direct | ||
| Martin Kearney Birmingham | FISI | Common Stock | Tax liability | -2.72% | -3,847 | 137,622 | 20 Mar 2026 | Direct | ||
| Martin Kearney Birmingham | FISI | Common Stock | Options Exercise | 8.16% | 10,672 | 141,469 | 20 Mar 2026 | Direct | ||
| Martin Kearney Birmingham | FISI | Restricted Stock Unit | Options Exercise | -100% | -10,672 | 0 | 20 Mar 2026 | Direct | ||
| Laurie R. Collins | FISI | Common Stock | Tax liability | -9.57% | -812 | 7,669 | 20 Mar 2026 | Direct | ||
| Laurie R. Collins | FISI | Common Stock | Options Exercise | 36.2% | 2,254 | 8,481 | 20 Mar 2026 | Direct | ||
| Laurie R. Collins | FISI | Restricted Stock Unit | Options Exercise | -100% | -2,254 | 0 | 20 Mar 2026 | Direct | ||
| William Jack Plants II | FISI | Common Stock | Purchase | 12% | $19,879 | $30.12 | 660 | 6,159 | 12 Mar 2026 | Direct |
| Dawn H. Burlew | FISI | Common Stock | Award | 2.01% | 408 | 20,657 | 28 Nov 2025 | Direct | ||
| Robert M. Glaser | FISI | Common Stock | Award | 1.2% | 571 | 48,051 | 28 Nov 2025 | Direct | ||
| Mark Zupan | FISI | Common Stock | Award | 3.31% | 449 | 14,019 | 28 Nov 2025 | Direct | ||
| Angela J. Panzarella | FISI | Common Stock | Award | 23.9% | 898 | 4,650 | 28 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.