Allison Transmission Holdings Inc SEC filings ALSN

Allison Transmission Holdings Inc has 1,001 filings in SEC EDGAR's recent list, going back to Sep 2, 2020. Its latest annual report, Form ARS, was filed on Mar 25, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 2, 2026 (results of operations). The company's fiscal year ends on December 31.

Form Description Filed Period
ARS Annual report to shareholders Mar 25, 2026 Dec 31, 2025
10-K Annual report Feb 24, 2026 Dec 31, 2025
ARS Annual report to shareholders Mar 26, 2025 Dec 31, 2024
10-K Annual report Feb 13, 2025 Dec 31, 2024
ARS Annual report to shareholders Mar 29, 2024 Dec 31, 2023
10-K Annual report Feb 14, 2024 Dec 31, 2023
ARS Annual report to shareholders Mar 24, 2023 Dec 31, 2022
10-K Annual report Feb 16, 2023 Dec 31, 2022
10-K Annual report Feb 17, 2022 Dec 31, 2021
10-K Annual report Feb 18, 2021 Dec 31, 2020

Showing 10 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Motor Vehicle Parts & Accessories (SIC 3714)
Listed as
ALSN (NYSE)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Indianapolis, IN
SEC filer status
Large accelerated filer
SEC CIK
1411207
Former names
Allison Transmission Holdings Inc (until Nov 4, 2026)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.