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UNION PACIFIC CORP — S-4 Filings

10 S-4 filings on record

This page lists all S-4 filings submitted to the SEC by UNION PACIFIC CORP (UNP), sorted by most recent first. Each row links to the full filing on EdgarLookup. UNION PACIFIC CORP has filed 10 S-4 documents with the SEC since 2020. To view all SEC filings by UNION PACIFIC CORP, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-K405/A 10-Q 10-Q/A 11-K 144 15-12B 15-12G 3 3/A 4 4/A 424B2 424B3 424B5 425 5 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A DEFC14A DEFN14A DEFR14A DFAN14A EFFECT FWP NO ACT POS AM PRE 14A PREM14A PREN14A PRER14A PRRN14A PX14A6G S-3 S-3/A S-3ASR S-4 S-4/A S-8 SC 13D SC 13D/A SC 13E3 SC 13E3/A SC 13G SC 13G/A SC 14D1 SC 14D1/A SC TO-T SC TO-T/A SCHEDULE 13G/A UPLOAD
Form Description Accession Number Filed Period
S-4 S-4 0001193125-25-204376 Sep 16, 2025
S-4 S-4 0001193125-21-235108 Aug 3, 2021
S-4 S-4 0001193125-21-036152 Feb 10, 2021
S-4 S-4 0001193125-20-060307 Mar 3, 2020
S-4 S-4 0001193125-16-758640 Nov 3, 2016
S-4 S-4 0001193125-13-409959 Oct 24, 2013
S-4 FORM S-4 0001193125-11-241295 Sep 6, 2011
S-4 FORM S-4 0001193125-10-241082 Oct 29, 2010
S-4 INTIAL FORM S-4 0000950130-01-504963 Oct 31, 2001
S-4 REGISTRATION STATEMENT 0000889812-95-000717 Dec 1, 1995