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Allison Transmission Holdings Inc. SEC filings

In the twelve months since 9 October 2025 Allison Transmission Holdings Inc. filed 20 documents with the SEC of the kinds listed here: 12 current reports (8-K), about 4 results of operations; 4 regulation fd disclosure; 3 material agreement; 2 officer or director change; 2 new financial obligation; 3 quarterly reports (10-Q), 1 conflict minerals report (SD), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A), 1 annual report (10-K). The latest, filed 5 August 2026: 10-Q, quarterly report.

FiledFormWhat it was aboutPeriod or event dateFiling
5 August 202610-Qquarterly report30 June 2026EDGAR
3 August 20268-KResults of operations3 August 2026EDGAR
16 June 20268-KMaterial agreement, Regulation FD disclosure11 June 2026EDGAR
29 May 2026SDconflict minerals reportEDGAR
8 May 20268-KOfficer or director change, Shareholder vote6 May 2026EDGAR
7 May 202610-Qquarterly report31 March 2026EDGAR
4 May 20268-KResults of operations4 May 2026EDGAR
25 March 2026ARSannual report to shareholders31 December 2025EDGAR
25 March 2026DEFA14Aadditional proxy materialEDGAR
25 March 2026DEF 14Aproxy statement6 May 2026EDGAR
16 March 20268-K/Aamended current report1 January 2026EDGAR
24 February 202610-Kannual report31 December 2025EDGAR
23 February 20268-KResults of operations23 February 2026EDGAR
2 January 20268-KMaterial agreement, Acquisition or disposition completed, New financial obligation, Officer or director change, Regulation FD disclosure1 January 2026EDGAR
24 November 20258-KMaterial agreement, New financial obligation21 November 2025EDGAR
7 November 20258-KOther events6 November 2025EDGAR
4 November 20258-KRegulation FD disclosure4 November 2025EDGAR
31 October 20258-KRegulation FD disclosure30 October 2025EDGAR
30 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.
Read moreForm 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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