--- schema_version: "secwatch.filing_event.v1" accession: "0001193125-22-215709" form_type: "8-K" ticker: "ALSN" cik: "0001411207" company_name: "Allison Transmission Holdings Inc" filed_at: "2022-08-09T23:59:59+00:00" generated_at: "2026-06-24T01:54:40.226019+00:00" event_type: "leadership" sentiment: "neutral" materiality_score: 0.55 calibrated_materiality_score: 0.55 confidence: "high" source: SEC EDGAR --- # Allison Transmission appoints four new directors; Rabaut to retire as Lead Independent Director ## Summary - Appointed Philip Christman (former Navistar President), Sasha Ostojic (venture partner), retired General Gustave Perna, and Krishna Shivram to Board effective immediately. - Thomas Rabaut will retire as Lead Independent Director after 2023 annual meeting; Richard Lavin appointed as successor. - Four directors (Rabaut, Askren, Garcia-Tunon, Reynolds) to retire at 2023 annual meeting; Board size to reduce from 14 to 10. - New directors assigned to committees: Christman on Audit/Compensation, Ostojic on Finance, Perna on Audit, Shivram on Audit/Finance and to become Audit Chair. ## SEC filing metadata - accession: 0001193125-22-215709 - form_type: 8-K - ticker: ALSN - cik: 0001411207 - company_name: Allison Transmission Holdings Inc - filed_at: 2022-08-09T23:59:59+00:00 - event_type: leadership - sentiment: neutral - materiality_score: 0.55 - calibrated_materiality_score: 0.55 - confidence: high - sec_items: 5.02, 9.01 - EDGAR index: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/d340876d8k.htm ## Machine-readable alternates - HTML: https://secwatch.observer/filing/0001193125-22-215709 - JSON: https://secwatch.observer/filing/0001193125-22-215709.json - Plain text: https://secwatch.observer/filing/0001193125-22-215709.txt ## Key facts - Executive change Gustave F. Perna was appointed as Director at Allison Transmission Holdings Inc. - Action: appointed - Role: Director source text: appointed Philip J. Christman, Sasha Ostojic, Gustave F. Perna and Krishna Shivram to serve as members of the Company’s Board, effective immediately evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Philip J. Christman was appointed as Director at Allison Transmission Holdings Inc. - Action: appointed - Role: Director source text: appointed Philip J. Christman, Sasha Ostojic, Gustave F. Perna and Krishna Shivram to serve as members of the Company’s Board, effective immediately evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Krishna Shivram was appointed as Director at Allison Transmission Holdings Inc. - Action: appointed - Role: Director source text: appointed Philip J. Christman, Sasha Ostojic, Gustave F. Perna and Krishna Shivram to serve as members of the Company’s Board, effective immediately evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Richard L. Lavin changed role as Lead Independent Director at Allison Transmission Holdings Inc. - Action: selected - Role: Lead Independent Director source text: The independent directors of the Board selected Richard L. Lavin to succeed Mr. Rabaut as Lead Independent Director of the Board effective immediately following the 2023 Annual Meeting. evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Richard V. Reynolds departed as Director at Allison Transmission Holdings Inc. - Action: notified decision not to stand for re-election - Role: Director source text: On August 5, 2022, Alvaro Garcia-Tunon, who currently serves as chair of the Audit Committee of the Board and as a member of the Finance Committee of the Board, and Richard V. Reynolds, who currently serves as a member of the Audit and Compensation Committees of the Board, each notified the Board of their decision not to stand for re-election at the Company’s 2023 Annual Meeting. evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Alvaro Garcia-Tunon departed as Director at Allison Transmission Holdings Inc. - Action: notified decision not to stand for re-election - Role: Director source text: On August 5, 2022, Alvaro Garcia-Tunon, who currently serves as chair of the Audit Committee of the Board and as a member of the Finance Committee of the Board, and Richard V. Reynolds, who currently serves as a member of the Audit and Compensation Committees of the Board, each notified the Board of their decision not to stand for re-election at the Company’s 2023 Annual Meeting. evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Sasha Ostojic was appointed as Director at Allison Transmission Holdings Inc. - Action: appointed - Role: Director source text: appointed Philip J. Christman, Sasha Ostojic, Gustave F. Perna and Krishna Shivram to serve as members of the Company’s Board, effective immediately evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm - Executive change Thomas R. Rabaut departed as Director at Allison Transmission Holdings Inc. - Action: notified decision not to stand for re-election - Role: Director source text: On August 5, 2022, Thomas R. Rabaut, who currently serves as Lead Independent Director of the Board and chair of the Nominating and Corporate Governance Committee of the Board, notified the Board of his decision not to stand for re-election at the 2023 Annual Meeting. evidence_url: https://www.sec.gov/Archives/edgar/data/1411207/000119312522215709/0001193125-22-215709-index.htm This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.