ALSN SEC filings

Recent SEC filings for Allison Transmission Holdings, Inc. (CIK 1411207, NYSE: ALSN).

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Recent ALSN filings

The 15 most recent SEC filings for Allison Transmission Holdings, Inc., sorted by filing date. Each row links to the official SEC document.

Filed	Form	Accession #
2026-09-02	4	0001193125-26-380153
2026-09-02	4	0001193125-26-380151
2026-09-02	4	0001193125-26-380150
2026-09-02	4	0001193125-26-380149
2026-09-02	4	0001193125-26-380148
2026-09-02	4	0001193125-26-380147
2026-09-02	4	0001193125-26-380146
2026-09-02	4	0001193125-26-380145
2026-09-02	4	0001193125-26-380144
2026-09-02	4	0001193125-26-380143
2026-09-02	4	0001193125-26-380141
2026-09-02	4	0001193125-26-380139
2026-09-02	4	0001193125-26-380138
2026-08-26	4	0001193125-26-365668
2026-08-13	4	0001193125-26-349536

Why ALSN filings on EdgarKit beat the alternatives

Real-time, not batched. Yahoo Finance and most aggregators batch the SEC daily index. EdgarKit polls EDGAR every 30 seconds, so new ALSN filings appear here within a minute of SEC acceptance.
Developer-ready JSON. Whalewisdom and OpenInsider give you HTML tables you can read but not parse cleanly. Every transaction shown above is also available as structured JSON via the API.
Full transaction codes. Yahoo collapses Form 4 lines into 'Buy' / 'Sell'. We keep the raw transaction code (P, S, A, M, F, etc.) so you can filter compensation noise out of trading signal.
Footnote text preserved. Rule 10b5-1 plan references, indirect ownership disclosures, and gift transfers are all retained in the API response, not stripped.
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About Allison Transmission Holdings, Inc.

Allison Transmission Holdings, Inc. designs, manufactures, and sells fully-automatic transmissions. Sector: Industrial Machinery. Listed on NYSE under ticker ALSN, SEC Central Index Key 1411207.

What gets filed by ALSN

10-K: annual report with audited financials, risk factors, and MD&A.
10-Q: quarterly report with unaudited financials.
8-K: material event disclosures (earnings, M&A, executive changes).
Form 4: insider transactions by ALSN officers, directors, and 10%+ owners.
13F: when institutional managers report ALSN holdings.
DEF 14A: annual proxy statement covering executive compensation and governance.

Get ALSN filings via API

Pull the most recent filings for ALSN (CIK 1411207) via the EdgarKit API:

curl "https://api.edgarkit.com/v1/filings?ticker=ALSN&limit=20" \
  -H "Authorization: Bearer YOUR_API_KEY"

Filter to specific form types:

curl "https://api.edgarkit.com/v1/filings?ticker=ALSN&form_type=4&transaction_code=P&limit=10" \
  -H "Authorization: Bearer YOUR_API_KEY"

Insider transactions

For ALSN insider Form 4 transactions specifically, see the ALSN insiders page.