FINANCIAL INSTITUTIONS INC — S-4 Filings

3 S-4 filings on record

This page lists all S-4 filings submitted to the SEC by FINANCIAL INSTITUTIONS INC (FIISP), sorted by most recent first. Each row links to the full filing on EdgarLookup. FINANCIAL INSTITUTIONS INC has filed 3 S-4 documents with the SEC since 2014. To view all SEC filings by FINANCIAL INSTITUTIONS INC, see the full filings list.

Overview All Filings Financials Insiders

All 10-K 10-K/A 10-K405 10-Q 10-Q/A 11-K 3 3/A 4 4/A 424B1 424B3 424B5 5 8-A12G 8-K 8-K/A ARS CORRESP D DEF 14A DEFA14A DEFC14A DFAN14A EFFECT FWP PRE 14A PREC14A PRRN14A S-1 S-1/A S-3 S-3/A S-4 S-4/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD

Form	Description	Accession Number	Filed	Period
S-4	S-4	0001193125-26-031769	Jan 30, 2026	—
S-4	FORM S-4	0001193125-20-305683	Nov 30, 2020	—
S-4	REGISTRATION STATEMENT ON FORM S-4 1/22/02	0000901309-02-000057	Feb 1, 2002	—