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NI SEC Filings

SEC filings for NI. Annual and quarterly reports, 8-K events, Form 4 insider filings and 13D/G stake disclosures.

All10-K10-Q8-KProxyForm 413D/GLast 12 months
FormFiledAccession
4BIRMINGHAM MELODYEVP & Grp President, UtilitiesAug 18, 2026EDGAR
8-KAug 18, 2026EDGAR
SC 13G/AamendedT. Rowe Price Investment Management, Inc.Aug 14, 2026EDGAR
8-KAug 5, 2026EDGAR
10-QAug 5, 2026EDGAR
4Jesanis Michael EJul 15, 2026EDGAR
4Berman Melanie B.EVP Administration & CHROMay 27, 2026EDGAR
4Yates Lloyd MDirector and President & CEOMay 26, 2026EDGAR
4BIRMINGHAM MELODYEVP & Grp President, UtilitiesMay 21, 2026EDGAR
8-KMay 18, 2026EDGAR
4Lee Cassandra S.May 13, 2026EDGAR
4McAvoy JohnMay 13, 2026EDGAR
4KABAT KEVIN TMay 13, 2026EDGAR
4JOHNSON WILLIAM DMay 13, 2026EDGAR
4Jesanis Michael EMay 13, 2026EDGAR
4Hersman DeborahMay 13, 2026EDGAR
4HENRETTA DEBORAH AMay 13, 2026EDGAR
4BUTLER ERIC LMay 13, 2026EDGAR
4Bunting Theodore H JRMay 13, 2026EDGAR
4Barbour Sondra LMay 13, 2026EDGAR
4ALTABEF PETERMay 13, 2026EDGAR
8-KMay 12, 2026EDGAR
10-QMay 6, 2026EDGAR
8-KMay 6, 2026EDGAR
SC 13GVanguard Capital ManagementApr 30, 2026EDGAR
SC 13GVanguard Portfolio ManagementApr 29, 2026EDGAR
DEF 14AMar 30, 2026EDGAR
SC 13G/AamendedThe Vanguard GroupMar 27, 2026EDGAR
4Yates Lloyd MDirector and President & CEOMar 3, 2026EDGAR
4Luhrs MichaelEVP, Tech, Customer & CCOMar 3, 2026EDGAR
4Jefferson William Jr.EVP, Chief Op & Safety OfficerMar 3, 2026EDGAR
4Gode GunnarSVP Chief Accting&Tax OfficerMar 3, 2026EDGAR
4Cuccia Kimberly SEVP, GC & Corporate SecretaryMar 3, 2026EDGAR
4BIRMINGHAM MELODYEVP & Grp President, UtilitiesMar 3, 2026EDGAR
4Berman Melanie B.EVP Administration & CHROMar 3, 2026EDGAR
4Anderson ShawnEVP & CFOMar 3, 2026EDGAR
4Gode GunnarSVP Chief Accting&Tax OfficerFeb 19, 2026EDGAR
4Anderson ShawnEVP & CFOFeb 17, 2026EDGAR
8-KFeb 11, 2026EDGAR
10-KFeb 11, 2026EDGAR
4Anderson ShawnEVP & CFOJan 27, 2026EDGAR
4Yates Lloyd MDirector and President & CEOJan 23, 2026EDGAR
4Luhrs MichaelEVP, Tech, Customer & CCOJan 23, 2026EDGAR
4Jefferson William Jr.EVP, Chief Op & Safety OfficerJan 23, 2026EDGAR
4Gode GunnarSVP Chief Accting&Tax OfficerJan 23, 2026EDGAR
4Cuccia Kimberly SEVP, GC & Corporate SecretaryJan 23, 2026EDGAR
4BIRMINGHAM MELODYEVP & Grp President, UtilitiesJan 23, 2026EDGAR
4Berman Melanie B.EVP Administration & CHROJan 23, 2026EDGAR
4Anderson ShawnEVP & CFOJan 23, 2026EDGAR
8-KDec 11, 2025EDGAR
SC 13G/AamendedT. Rowe Price Investment Management, Inc.Dec 5, 2025EDGAR
4Cuccia Kimberly SEVP, GC & Corporate SecretaryNov 26, 2025EDGAR
8-KNov 7, 2025EDGAR
8-KOct 31, 2025EDGAR
8-KOct 29, 2025EDGAR
10-QOct 29, 2025EDGAR

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Source: SEC EDGAR.