---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-137120"
form_type: "8-K"
ticker: "ALSN"
cik: "0001411207"
company_name: "Allison Transmission Holdings Inc"
filed_at: "2023-05-05T23:59:59+00:00"
generated_at: "2026-06-15T16:17:36.788771+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Allison Transmission amends bylaws and reports annual meeting voting results

## Summary
- Board approved amended bylaws addressing universal proxy rules, advance notice disclosures, majority vote standard, and federal forum provision.
- Stockholders elected ten directors for one-year terms: voting results ranged from 67.2M to 79.5M votes for each nominee.
- Ratified appointment of PricewaterhouseCoopers as independent auditor for 2023 with 82.95M votes for, 1.80M against.
- Advisory vote on executive compensation approved with 74.85M for, 4.94M against, and 4.85M broker non-votes.

## SEC filing metadata
- accession: 0001193125-23-137120
- form_type: 8-K
- ticker: ALSN
- cik: 0001411207
- company_name: Allison Transmission Holdings Inc
- filed_at: 2023-05-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.03, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/0001193125-23-137120-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/d356946d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-137120
- JSON: https://secwatch.observer/filing/0001193125-23-137120.json
- Plain text: https://secwatch.observer/filing/0001193125-23-137120.txt

## Key facts
- Governance Changes
  Allison Transmission Holdings Inc: Approved and adopted an amendment and restatement of the Sixth Amended and Restated Bylaws to address universal proxy rules, revise advance notice requirements, update vote standards, adopt federal forum provision, and make technical changes (effective 2023-05-04).
  - Change: bylaw amendment
  - Effective: 2023-05-04
  source text: On May 4, 2023, the Board of Directors (the “Board”) of Allison Transmission Holdings, Inc. (the “Company”), acting upon the recommendation of the Nominating and Corporate Governance Committee of the Board, approved and adopted an amendment and restatement of the Company’s Sixth Amended and Restated Bylaws (as so amended, the “Amended and Restated Bylaws”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/0001193125-23-137120-index.htm
- Shareholder Votes
  Allison Transmission Holdings Inc shareholders approved Ratification of the appointment of PricewaterhouseCoopers LLP as the independent registered public accounting firm for 2023 at the 2023-05-03 meeting.
  - Proposal: auditor ratification
  - Outcome: passed
  - Meeting: 2023-05-03
  source text: Proposal 2 – Ratification of Appointment of PwC. FOR AGAINST ABSTAIN 82,952,856 1,798,198 21,738
  evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/0001193125-23-137120-index.htm
- Shareholder Votes
  Allison Transmission Holdings Inc shareholders approved Advisory (non-binding) vote on executive compensation at the 2023-05-03 meeting.
  - Proposal: say on pay
  - Outcome: passed
  - Meeting: 2023-05-03
  source text: Proposal 3 – Advisory Vote on Executive Compensation. FOR AGAINST ABSTAIN BROKER NON-VOTES 74,848,658 4,936,199 133,316 4,854,619
  evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/0001193125-23-137120-index.htm
- Shareholder Votes
  Allison Transmission Holdings Inc shareholders approved Election of ten directors for one-year terms ending at the 2024 annual meeting at the 2023-05-03 meeting.
  - Proposal: director election
  - Outcome: passed
  - Meeting: 2023-05-03
  source text: Proposal 1 – Election of Directors. NOMINEES FOR AGAINST ABSTAIN BROKER NON-VOTES Judy L. Altmaier 77,392,979 2,490,185 35,009 4,854,619 D. Scott Barbour 78,809,189 1,078,005 30,979 4,854,619 Philip J. Christman 79,065,116 822,616 30,441 4,854,619 David C. Everitt 75,984,575 3,903,089 30,509 4,854,619 David S. Graziosi 75,238,746 4,506,588 172,839 4,854,619 Carolann I. Haznedar 77,751,927 2,130,509 35,737 4,854,619 Richard P. Lavin 67,222,059 12,665,151 30,963 4,854,619 Sasha Ostojic 79,512,082 369,902 36,189 4,854,619 Gustave F. Perna 78,671,970 1,215,277 30,926 4,854,619 Krishna Shivram 78,575,586 1,311,284 31,303 4,854,619
  evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312523137120/0001193125-23-137120-index.htm

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