---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-116906"
form_type: "8-K"
ticker: "ALSN"
cik: "0001411207"
company_name: "Allison Transmission Holdings Inc"
filed_at: "2025-05-09T23:59:59+00:00"
generated_at: "2026-05-22T01:33:08.391276+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Allison Transmission shareholders approve officer exculpation amendment, re-elect directors at annual meeting

## Summary
- All nine director nominees elected with >70M votes for each; no significant opposition.
- Ratification of PwC as independent auditor for 2025 passed with 77.99M for vs 1.17M against.
- Exculpation amendment approved (66.63M for, 8.93M against), aligning with Delaware law change.
- Say-on-pay advisory vote passed (70.05M for, 5.56M against); board adopts annual vote until 2031.

## SEC filing metadata
- accession: 0001193125-25-116906
- form_type: 8-K
- ticker: ALSN
- cik: 0001411207
- company_name: Allison Transmission Holdings Inc
- filed_at: 2025-05-09T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1411207/000119312525116906/0001193125-25-116906-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1411207/000119312525116906/d945705d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-116906
- JSON: https://secwatch.observer/filing/0001193125-25-116906.json
- Plain text: https://secwatch.observer/filing/0001193125-25-116906.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.