Allison Transmission Holdings Inc — DEFA14A Filings
19 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by Allison Transmission Holdings Inc (ALSN), sorted by most recent first. Each row links to the full filing on EdgarLookup. Allison Transmission Holdings Inc has filed 19 DEFA14A documents with the SEC since 2020. To view all SEC filings by Allison Transmission Holdings Inc, see the full filings list.
All
10-K
10-Q
144
144/A
3
3/A
4
4/A
424B1
424B3
424B7
5
8-A12B
8-K
8-K/A
ARS
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
FWP
POS EX
PRE 14A
REGDEX
S-1
S-1/A
S-3ASR
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001140361-26-011094 | Mar 25, 2026 | — |
| DEFA14A | DEFA14A | 0001140361-25-012468 | Apr 7, 2025 | — |
| DEFA14A | DEFA14A | 0001140361-25-010359 | Mar 26, 2025 | — |
| DEFA14A | DEFA14A | 0001140361-24-016470 | Mar 29, 2024 | — |
| DEFA14A | DEFA14A | 0001140361-23-013599 | Mar 24, 2023 | — |
| DEFA14A | DEFA14A | 0001140361-22-011117 | Mar 25, 2022 | — |
| DEFA14A | DEFA14A | 0001140361-21-010121 | Mar 26, 2021 | — |
| DEFA14A | DEFA14A | 0001140361-20-009679 | Apr 24, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-009377 | Apr 21, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-007109 | Mar 27, 2020 | — |
| DEFA14A | DEFA14A | 0001193125-19-139685 | May 7, 2019 | — |
| DEFA14A | DEFA14A | 0001140361-19-006075 | Mar 29, 2019 | — |
| DEFA14A | DEFA14A | 0001193125-18-100614 | Mar 29, 2018 | — |
| DEFA14A | DEFA14A | 0001193125-17-105315 | Mar 31, 2017 | — |
| DEFA14A | FORM 8-K | 0001193125-16-505429 | Mar 16, 2016 | — |
| DEFA14A | 8-K | 0001193125-16-502315 | Mar 14, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-15-117094 | Apr 2, 2015 | — |
| DEFA14A | DEFA14A | 0001193125-14-117661 | Mar 27, 2014 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001193125-13-132422 | Mar 28, 2013 | — |