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Nisource Inc. SEC filings

In the twelve months since 23 September 2025 Nisource Inc. filed 20 documents with the SEC of the kinds listed here: 10 current reports (8-K), about 4 other events; 4 results of operations; 2 material agreement; 1 shareholder vote; 1 new financial obligation; 3 quarterly reports (10-Q), 1 employee plan annual report (11-K), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A), 1 annual report (10-K). The latest, filed 18 August 2026: 8-K, other events.

FiledFormWhat it was aboutPeriod or event dateFiling
18 August 20268-KOther events18 August 2026EDGAR
5 August 202610-Qquarterly report30 June 2026EDGAR
5 August 20268-KResults of operations5 August 2026EDGAR
18 June 202611-Kemployee plan annual report31 December 2025EDGAR
18 May 20268-KOther events18 May 2026EDGAR
12 May 20268-KShareholder vote11 May 2026EDGAR
6 May 202610-Qquarterly report31 March 2026EDGAR
6 May 20268-KResults of operations6 May 2026EDGAR
30 March 2026ARSannual report to shareholders31 December 2025EDGAR
30 March 2026DEFA14Aadditional proxy materialEDGAR
30 March 2026DEF 14Aproxy statement11 May 2026EDGAR
11 February 202610-Kannual report31 December 2025EDGAR
11 February 20268-KResults of operations11 February 2026EDGAR
11 December 20258-KMaterial agreement, New financial obligation11 December 2025EDGAR
7 November 20258-KOther events7 November 2025EDGAR
7 November 2025S-8employee share plan registrationEDGAR
31 October 20258-KMaterial agreement, Other events31 October 2025EDGAR
30 October 2025S-3ASRshelf registrationEDGAR
29 October 202510-Qquarterly report30 September 2025EDGAR
29 October 20258-KResults of operations29 October 2025EDGAR

An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened. Form 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

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