ALSN

SEC source: 0001193125-26-054562 · ownership.xml · nonDerivative · entry 3

Bohley G Frederick · CIK 0001741824 · Allison COO,Pres.&BU Leader AT

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 103,786

F1 · shares: This sale was pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2025.

F3 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at per share prices ranging from $115.5700 to $116.5564. The reporting person undertakes to provide Allison Transmission Holdings, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-054562 · ownership.xml · nonDerivative · entry 2

Bohley G Frederick · CIK 0001741824 · Allison COO,Pres.&BU Leader AT

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 108,294

F1 · shares: This sale was pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2025.

F2 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at per share prices ranging from $114.5625 to $115.5600. The reporting person undertakes to provide Allison Transmission Holdings, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001193125-26-054562 · ownership.xml · nonDerivative · entry 1

Bohley G Frederick · CIK 0001741824 · Allison COO,Pres.&BU Leader AT

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 109,422

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-051260 · ownership.xml · derivative · entry 1

Scroggins Eric C. · CIK 0001543507 · CLO & Asst. Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,448

Underlying: Common Stock · 5,448 shares

Expires not disclosed

F1 · derivative.exercise_price: Each performance-based restricted stock unit ("PSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F2 · shares: On February 22, 2023, the reporting person was granted PSUs with the number of PSUs earned to be determined based on the extent to which certain performance conditions were met for a performance period of 2023-2025. As determined on February 11, 2026, based on ALSN's actual performance for 2023-2025, the reporting person earned 5,448 PSUs.

F3 · derivative.exercise_date: Earned PSUs will vest on February 28, 2026.

F3 · derivative.expiration_date: Earned PSUs will vest on February 28, 2026.

SEC source: 0001193125-26-051270 · ownership.xml · derivative · entry 1

Graziosi David S. · CIK 0001543492 · Director · Chair, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,893

Underlying: Common Stock · 78,893 shares

Expires not disclosed

F1 · derivative.exercise_price: Each performance-based restricted stock unit ("PSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F2 · shares: On February 22, 2023, the reporting person was granted PSUs with the number of PSUs earned to be determined based on the extent to which certain performance conditions were met for a performance period of 2023-2025. As determined on February 11, 2026, based on ALSN's actual performance for 2023-2025, the reporting person earned 78,893 PSUs.

F3 · derivative.exercise_date: Earned PSUs will vest on February 28, 2026.

F3 · derivative.expiration_date: Earned PSUs will vest on February 28, 2026.

SEC source: 0001193125-26-051269 · ownership.xml · derivative · entry 1

Bohley G Frederick · CIK 0001741824 · Allison COO,Pres.&BU Leader AT

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,101

Underlying: Common Stock · 17,101 shares

Expires not disclosed

F1 · derivative.exercise_price: Each performance-based restricted stock unit ("PSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F2 · shares: On February 22, 2023, the reporting person was granted PSUs with the number of PSUs earned to be determined based on the extent to which certain performance conditions were met for a performance period of 2023-2025. As determined on February 11, 2026, based on ALSN's actual performance for 2023-2025, the reporting person earned 17,101 PSUs.

F3 · derivative.exercise_date: Earned PSUs will vest on February 28, 2026.

F3 · derivative.expiration_date: Earned PSUs will vest on February 28, 2026.

SEC source: 0001193125-26-044651 · ownership.xml · nonDerivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,890

F1 · security: These shares represent a quarterly payment of the reporting person's annual retainer under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy. The annual retainer is paid quarterly in arrears in cash or common stock at the reporting person's discretion.

F2 · shares: The number of shares of common stock received was calculated based on $115.63, which was the closing price of the Company's common stock on the date of grant.

SEC source: 0001193125-26-044636 · ownership.xml · nonDerivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,603

F1 · security: These shares represent a quarterly payment of the reporting person's annual retainer under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy. The annual retainer is paid quarterly in arrears in cash or common stock at the reporting person's discretion.

F2 · shares: The number of shares of common stock received was calculated based on $115.63, which was the closing price of the Company's common stock on the date of grant.

SEC source: 0001193125-26-002549 · ownership.xml · derivative · entry 1

Price Craig C · CIK 0002035862 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,393

Underlying: Common Stock · 11,393 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc.'s ("ALSN") common stock.

F2 · derivative.exercise_date: The RSUs vest in three equal annual installments beginning on February 1, 2027.

F2 · derivative.expiration_date: The RSUs vest in three equal annual installments beginning on February 1, 2027.

SEC source: 0001193125-26-000965 · ownership.xml · nonDerivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,021

F1 · shares: This sale was pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 26, 2024.

SEC source: 0001193125-25-312707 · ownership.xml · derivative · entry 1

Eifert Thomas · CIK 0001878235 · VP, Quality Plan & Prog Mgmt

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312717 · ownership.xml · derivative · entry 1

Mell Scott A · CIK 0001860129 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54

Underlying: Common Stock · 18 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312713 · ownership.xml · derivative · entry 1

HAZNEDAR CAROLANN I · CIK 0001756619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,440

Underlying: Common Stock · 62 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312714 · ownership.xml · derivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312709 · ownership.xml · derivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151

Underlying: Common Stock · 18 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312705 · ownership.xml · derivative · entry 1

Altmaier Judy L · CIK 0001474806 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,323

Underlying: Common Stock · 59 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312718 · ownership.xml · derivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312716 · ownership.xml · derivative · entry 1

Perna Gustave · CIK 0001942585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312715 · ownership.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Engr. & Tech Dev.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312712 · ownership.xml · derivative · entry 1

van Niekerk Teresa · CIK 0001918190 · VP, Chief Procurement Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312711 · ownership.xml · derivative · entry 1

Scroggins Eric C. · CIK 0001543507 · VP, Gen. Counsel & Assist. Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312710 · ownership.xml · derivative · entry 1

Ostojic Sasha · CIK 0001942133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312708 · ownership.xml · derivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 288

Underlying: Common Stock · 38 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312706 · ownership.xml · derivative · entry 1

Shivram Krishna · CIK 0001512863 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312704 · ownership.xml · derivative · entry 1

Pittard Dana JH · CIK 0001661939 · VP, Defense Programs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63

Underlying: Common Stock · 7 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312703 · ownership.xml · derivative · entry 1

Graziosi David S. · CIK 0001543492 · Director · Chair, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,244

Underlying: Common Stock · 154 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-312702 · ownership.xml · derivative · entry 1

EVERITT DAVID C · CIK 0001196652 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,608

Underlying: Common Stock · 89 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001193125-25-277463 · ownership.xml · nonDerivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,788

F1 · security: These shares represent a quarterly payment of the reporting person's annual retainer under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy. The annual retainer is paid quarterly in arrears in cash or common stock at the reporting person's discretion.

F2 · shares: The number of shares of common stock received was calculated based on $81.95, which was the closing price of the Company's common stock on the date of grant.

SEC source: 0001193125-25-277467 · ownership.xml · nonDerivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,501

F1 · security: These shares represent a quarterly payment of the reporting person's annual retainer under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy. The annual retainer is paid quarterly in arrears in cash or common stock at the reporting person's discretion.

F2 · shares: The number of shares of common stock received was calculated based on $81.95, which was the closing price of the Company's common stock on the date of grant.

SEC source: 0001193125-25-226745 · ownership.xml · nonDerivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,812

F1 · shares: This sale was pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 26, 2024.

SEC source: 0000950170-25-112814 · ownership.xml · derivative · entry 1

Eifert Thomas · CIK 0001878235 · VP, Quality Plan & Prog Mgmt

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001860129-25-000004 · ownership.xml · derivative · entry 1

Mell Scott A · CIK 0001860129 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36

Underlying: Common Stock · 20 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001756619-25-000005 · ownership.xml · derivative · entry 1

HAZNEDAR CAROLANN I · CIK 0001756619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,378

Underlying: Common Stock · 66 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0000950170-25-112813 · ownership.xml · derivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001687117-25-000005 · ownership.xml · derivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 133

Underlying: Common Stock · 19 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001474806-25-000005 · ownership.xml · derivative · entry 1

Altmaier Judy L · CIK 0001474806 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,264

Underlying: Common Stock · 64 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001543507-25-000005 · ownership.xml · derivative · entry 1

Scroggins Eric C. · CIK 0001543507 · VP, Gen. Counsel & Assist. Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001716232-25-000003 · ownership.xml · derivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001918190-25-000005 · ownership.xml · derivative · entry 1

van Niekerk Teresa · CIK 0001918190 · VP, Chief Procurement Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71

Underlying: Common Stock · 10 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001543604-25-000005 · ownership.xml · derivative · entry 1

Milburn Ryan A. · CIK 0001543604 · VP, Engr. & Tech Dev.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70

Underlying: Common Stock · 9 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001512863-25-000006 · ownership.xml · derivative · entry 1

Shivram Krishna · CIK 0001512863 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0000950170-25-112817 · ownership.xml · derivative · entry 1

Perna Gustave · CIK 0001942585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0000950170-25-112816 · ownership.xml · derivative · entry 1

Ostojic Sasha · CIK 0001942133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

Underlying: Common Stock · 4 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0000950170-25-112815 · ownership.xml · derivative · entry 1

Graziosi David S. · CIK 0001543492 · Director · Chair, President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,090

Underlying: Common Stock · 162 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001196652-25-000005 · ownership.xml · derivative · entry 1

EVERITT DAVID C · CIK 0001196652 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,519

Underlying: Common Stock · 95 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded deferred stock units ("DSUs") and vest proportionately with the DSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001661939-25-000005 · ownership.xml · derivative · entry 1

Pittard Dana JH · CIK 0001661939 · VP, Defense Programs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56

Underlying: Common Stock · 7 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001741824-25-000009 · ownership.xml · derivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 250

Underlying: Common Stock · 39 shares

Expires not disclosed

F1 · derivative.exercise_price: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

F1 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock.

SEC source: 0001741824-25-000005 · ownership.xml · nonDerivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,074

F1 · price: The price reported is a weighted average price. The shares were purchased in multiple transactions at per share prices ranging from $88.49 to $88.50. The reporting person undertakes to provide Allison Transmission Holdings, Inc. ("ALSN") or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

SEC source: 0001741824-25-000007 · ownership.xml · nonDerivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,074

F1 · price: The price reported is a weighted average price. The shares were purchased in multiple transactions at per share prices ranging from $88.49 to $88.50. The reporting person undertakes to provide Allison Transmission Holdings, Inc. ("ALSN") or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F2 · price: This Form 4/A is being filed to amend the original Form 4 filed on August 15, 2025, solely to correct an administrative error in the weighted average price reported. The original filing reported a weighted average price of $89.4999 for the purchase transaction that occurred on August 14, 2025. The correct weighted average price is $88.4999.

SEC source: 0001756611-25-000003 · ownership.xml · nonDerivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,644

F1 · security: These shares represent a quarterly payment of the reporting person's annual retainer under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy. The annual retainer is paid quarterly in arrears in cash or common stock at the reporting person's discretion.

F2 · shares: The number of shares of common stock received was calculated based on $87.41, which was the closing price of the Company's common stock on the date of grant.