PL Capital Advisors, LLC - 30 Sep 2025 SCHEDULE 13D/A Report for FINANCIAL INSTITUTIONS, INC Common Stock, $0.01 par value (FISI)

Filing manager: PL Capital Advisors, LLC
Reporting owner: LASHLEY RICHARD J
Security: FINANCIAL INSTITUTIONS, INC Common Stock, $0.01 par value
Beneficially owned shares: 1,785,686 shares
Large-stake signal: Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Ownership
8.9%
Beneficial ownership of this reported class.
Shares
1,785,686 shares
Shares beneficially owned as disclosed.
Event date
30 Sep 2025
Date tied to the ownership event or amendment.
Accepted by SEC
02 Oct 2025
EDGAR acceptance date.
How to read this large-stake filing
Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
Compare this filing with the holder history and issuer page before treating the percentage as a current position.
Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership: 8.9%
Symbol: FISI
Shares outstanding: 20,063,888 shares
SEC form: SCHEDULE 13D/A
Accepted by SEC: 02 Oct 2025, 17:03:38 UTC
Event date: 30 Sep 2025
Prior SEC filing: 15 Aug 2025
Source filing: View source filing

Key filing fact

PL Capital Advisors, LLC disclosed 8.9% ownership in FINANCIAL INSTITUTIONS, INC Common Stock, $0.01 par value (FISI) on 30 Sep 2025.

Key facts

PL Capital Advisors, LLC filed SCHEDULE 13D/A for FINANCIAL INSTITUTIONS, INC Common Stock, $0.01 par value (FISI).
Disclosed ownership: 8.9%.
Date of event: 30 Sep 2025.

This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

Reporting persons

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name	Ownership	Shares owned	Sole voting power	Shared voting power	Signature	Title	CIK
PL Capital Advisors, LLC	8.8%	1,774,886	0	1,774,886	/s/ John W. Palmer	Managing Member	0001569147
LASHLEY RICHARD J	8.9%	1,785,686	5,000	1,780,586	/s/ Richard J. Lashley	Richard J. Lashley	0001204241
PALMER JOHN W	8.8%	1,778,886	4,000	1,774,886	/s/ John W. Palmer	John W. Palmer	0001204244
Black Maple Capital Management LP	0.2%	31,989	0	31,989	/s/ Robert Barnard	Managing Member	0001588959
Black Maple Capital Holdings LLC	0.2%	31,989	0	31,989	/s/ Robert Barnard	Managing Member
Barnard Robert James	0.2%	31,989	0	31,989	/s/ Robert Jamaes Barnard	/s/ Robert Jamaes Barnard	0001979656
Danielle Morgan Lashley 2010 Trust	0.01%	3,000	0	3,000	/s/ Richard Lashley	Trustee
Lashley Danielle Morgan	0.01%	3,000	0	3,000	/s/ Danielle Morgan Lashley	Danielle Morgan Lashley
Lashley Family 2011 Trust	0.03%	5,100	0	5,100	/s/ Beth Lashley	Trustee
Lashley Beth	0.03%	5,100	0	5,100	/s/ Beth Lashley	Beth Lashley
Lashley Family 2012 Trust	0.01%	3,000	0	3,000	/s/ Richard Lashley	Trustee
Lashley Robin	0.01%	1,200	0	1,200	/s/ Robin Lashley	Robin Lashley
Caitlin Anne Lashley 2010 Trust	0.01%	1,500	0	1,500	/s/ Richard Lashley	Trustee
Fanelli Caitlin (nee Lashley)	0.01%	1,500	0	1,500	/s/ Caitlin Fanelli	/s/ Caitlin Fanelli

CIK / CUSIP context first

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