# Allison Transmission Holdings Inc: filings

ALSN · NYSE · CIK 1411207 · [Consumer discretionary](/sectors/consumer-discretionary.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/alsn.md) · [Financials](/companies/alsn/financials.md) · [Filings](/companies/alsn/filings.md) · [Insiders](/companies/alsn/insiders.md)

## Reports and events: 271 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 1833, 8-K 172, 144 69, 3 53, 10-Q 44, SC 13G/A 39, 4/A 27, DEFA14A 19, CORRESP 16, 10-K 14, DEF 14A 14, UPLOAD 14, SC 13G 13, SD 13, SC 13D/A 12, 424B3 8, S-1/A 8, ARS 7, FWP 7, 8-K/A 4, 5 3, SCHEDULE 13G/A 3, PRE 14A 2, S-8 2, SC 13D 2, SCHEDULE 13G 2, 144/A 1, 3/A 1, 424B1 1, 424B7 1, 8-A12B 1, CERTNYS 1, EFFECT 1, POS EX 1, S-1 1, S-3ASR 1, S-8 POS 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-08-05 | 09:13 ET | [10-Q](/filings/0001193125-26-334039.md) | Quarterly report, period 2026-06-30 | 0001193125-26-334039 |
| 2026-08-03 | 16:05 ET | [8-K](/filings/0001193125-26-330544.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-330544 |
| 2026-06-16 | 16:14 ET | [8-K](/filings/0001193125-26-272602.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-272602 |
| 2026-05-08 | 16:15 ET | [8-K](/filings/0001193125-26-214675.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results | 0001193125-26-214675 |
| 2026-05-07 | 16:04 ET | [10-Q](/filings/0001193125-26-211857.md) | Quarterly report, period 2026-03-31 | 0001193125-26-211857 |
| 2026-05-04 | 16:41 ET | [8-K](/filings/0001193125-26-204146.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-204146 |
| 2026-03-25 | 16:06 ET | [DEF 14A](/filings/0001140361-26-011093.md) | Proxy statement, period 2026-05-06 | 0001140361-26-011093 |
| 2026-03-16 | 18:01 ET | [8-K/A](/filings/0001193125-26-106549.md) | 9.01 Financial statements and exhibits | 0001193125-26-106549 |
| 2026-02-24 | 09:28 ET | [10-K](/filings/0001193125-26-065627.md) | Annual report, period 2025-12-31 | 0001193125-26-065627 |
| 2026-02-23 | 16:10 ET | [8-K](/filings/0001193125-26-063975.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-063975 |
| 2026-01-02 | 08:54 ET | [8-K](/filings/0001193125-26-000343.md) | 1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 2.03 New direct financial obligation; 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-000343 |
| 2025-11-24 | 17:25 ET | [8-K](/filings/0001193125-25-293880.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-25-293880 |
| 2025-11-07 | 06:03 ET | [8-K](/filings/0001193125-25-270819.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-270819 |
| 2025-11-04 | 17:23 ET | [8-K](/filings/0001193125-25-265028.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-265028 |
| 2025-10-31 | 21:43 ET | [8-K](/filings/0001193125-25-259124.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-259124 |
| 2025-10-30 | 09:06 ET | [10-Q](/filings/0001193125-25-257624.md) | Quarterly report, period 2025-09-30 | 0001193125-25-257624 |
| 2025-10-29 | 16:05 ET | [8-K](/filings/0001193125-25-256299.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-256299 |
| 2025-08-05 | 16:06 ET | [10-Q](/filings/0000950170-25-103020.md) | Quarterly report, period 2025-06-30 | 0000950170-25-103020 |
| 2025-08-04 | 16:17 ET | [8-K](/filings/0001193125-25-172619.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-172619 |
| 2025-06-13 | 16:16 ET | [8-K](/filings/0001193125-25-140770.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-140770 |
| 2025-06-11 | 16:41 ET | [8-K](/filings/0001193125-25-139199.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-139199 |
| 2025-05-09 | 16:17 ET | [8-K](/filings/0001193125-25-116906.md) | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-25-116906 |
| 2025-05-02 | 08:53 ET | [10-Q](/filings/0000950170-25-062281.md) | Quarterly report, period 2025-03-31 | 0000950170-25-062281 |
| 2025-05-01 | 16:15 ET | [8-K](/filings/0001193125-25-109981.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-109981 |
| 2025-04-10 | 16:05 ET | [8-K](/filings/0001193125-25-077947.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-077947 |
| 2025-03-26 | 09:00 ET | [DEF 14A](/filings/0001140361-25-010358.md) | Proxy statement, period 2025-05-07 | 0001140361-25-010358 |
| 2025-02-20 | 16:15 ET | [8-K](/filings/0001193125-25-030728.md) | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-030728 |
| 2025-02-13 | 09:00 ET | [10-K](/filings/0000950170-25-019379.md) | Annual report, period 2024-12-31 | 0000950170-25-019379 |
| 2025-02-11 | 16:06 ET | [8-K](/filings/0001193125-25-024308.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-25-024308 |
| 2024-10-30 | 09:14 ET | [10-Q](/filings/0000950170-24-118639.md) | Quarterly report, period 2024-09-30 | 0000950170-24-118639 |
| 2024-10-29 | 16:05 ET | [8-K](/filings/0001193125-24-246521.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-24-246521 |
| 2024-07-26 | 08:57 ET | [10-Q](/filings/0000950170-24-086738.md) | Quarterly report, period 2024-06-30 | 0000950170-24-086738 |
| 2024-07-25 | 16:15 ET | [8-K](/filings/0001193125-24-184838.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-24-184838 |
| 2024-06-04 | 16:15 ET | [8-K](/filings/0001193125-24-154265.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-154265 |
| 2024-05-10 | 16:18 ET | [8-K](/filings/0001193125-24-136188.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-24-136188 |
| 2024-04-26 | 08:41 ET | [10-Q](/filings/0000950170-24-048677.md) | Quarterly report, period 2024-03-31 | 0000950170-24-048677 |
| 2024-04-25 | 16:05 ET | [8-K](/filings/0001193125-24-113874.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-24-113874 |
| 2024-03-29 | 09:04 ET | [DEF 14A](/filings/0001140361-24-016468.md) | Proxy statement, period 2024-05-08 | 0001140361-24-016468 |
| 2024-03-18 | 16:05 ET | [8-K](/filings/0001193125-24-070130.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-070130 |
| 2024-02-14 | 16:02 ET | [10-K](/filings/0000950170-24-015192.md) | Annual report, period 2023-12-31 | 0000950170-24-015192 |
| 2024-02-13 | 16:24 ET | [8-K](/filings/0001193125-24-033768.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-24-033768 |
| 2023-10-26 | 08:35 ET | [10-Q](/filings/0000950170-23-055372.md) | Quarterly report, period 2023-09-30 | 0000950170-23-055372 |
| 2023-10-25 | 16:15 ET | [8-K](/filings/0001193125-23-263026.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-23-263026 |
| 2023-07-28 | 08:49 ET | [10-Q](/filings/0000950170-23-035292.md) | Quarterly report, period 2023-06-30 | 0000950170-23-035292 |
| 2023-07-27 | 16:13 ET | [8-K](/filings/0001193125-23-196106.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-23-196106 |
| 2023-05-05 | 16:16 ET | [8-K](/filings/0001193125-23-137120.md) | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-23-137120 |
| 2023-04-28 | 08:58 ET | [10-Q](/filings/0000950170-23-015499.md) | Quarterly report, period 2023-03-31 | 0000950170-23-015499 |
| 2023-04-27 | 16:14 ET | [8-K](/filings/0001193125-23-122177.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-23-122177 |
| 2023-03-24 | 09:04 ET | [DEF 14A](/filings/0001140361-23-013594.md) | Proxy statement | 0001140361-23-013594 |
| 2023-03-06 | 16:02 ET | [8-K](/filings/0001193125-23-061359.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-23-061359 |

Page 1 of 6. [Older](/companies/alsn/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:09 ET. No prices; not investment advice.