ALSN

SEC source: 0000950170-25-106522 · ownership.xml · nonDerivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,357

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.

SEC source: 0000950170-25-092184 · ownership.xml · nonDerivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,600

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

SEC source: 0000950170-25-082302 · ownership.xml · derivative · entry 6

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211

Underlying: Common Stock · 5 shares

Expires not disclosed

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.

F2 · derivative.exercise_price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.exercise_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

F2 · derivative.expiration_date: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

SEC source: 0000950170-25-082302 · ownership.xml · derivative · entry 5

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,067

Underlying: Common Stock · 533 shares

Expires not disclosed

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.

F1 · derivative.exercise_price: Settlement of restricted stock units ("RSUs") granted on June 4, 2024. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.exercise_date: Settlement of restricted stock units ("RSUs") granted on June 4, 2024. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

F1 · derivative.expiration_date: Settlement of restricted stock units ("RSUs") granted on June 4, 2024. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

SEC source: 0000950170-25-082302 · ownership.xml · nonDerivative · entry 3

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,074

F3 · shares: Represents shares withheld by ALSN to satisfy tax withholding obligations on the vesting of RSUs and DERs.

SEC source: 0000950170-25-082302 · ownership.xml · nonDerivative · entry 2

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,314

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.

F2 · price: Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

SEC source: 0000950170-25-082302 · ownership.xml · nonDerivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,309

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.

F1 · price: Settlement of restricted stock units ("RSUs") granted on June 4, 2024. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

SEC source: 0000950170-25-080873 · 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: 61

Underlying: Common Stock · 8 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: 0000950170-25-080869 · ownership.xml · derivative · entry 1

Mell Scott A · CIK 0001860129 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16

Underlying: Common Stock · 16 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: 0000950170-25-080882 · ownership.xml · derivative · entry 1

HAZNEDAR CAROLANN I · CIK 0001756619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,312

Underlying: Common Stock · 56 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: 0000950170-25-080874 · ownership.xml · derivative · entry 1

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4

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: 0000950170-25-080866 · ownership.xml · derivative · entry 1

Coll John · CIK 0001687117 · SVP, Global MSS

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114

Underlying: Common Stock · 16 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: 0000950170-25-080881 · ownership.xml · derivative · entry 1

Altmaier Judy L · CIK 0001474806 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,200

Underlying: Common Stock · 54 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: 0000950170-25-080884 · ownership.xml · derivative · entry 1

EVERITT DAVID C · CIK 0001196652 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,424

Underlying: Common Stock · 80 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: 0000950170-25-080876 · ownership.xml · derivative · entry 1

Perna Gustave · CIK 0001942585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4

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: 0000950170-25-080875 · ownership.xml · derivative · entry 1

Ostojic Sasha · CIK 0001942133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4

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: 0000950170-25-080880 · ownership.xml · derivative · entry 1

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4

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: 0000950170-25-080879 · 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: 61

Underlying: Common Stock · 8 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: 0000950170-25-080872 · 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: 928

Underlying: Common Stock · 137 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: 0000950170-25-080878 · ownership.xml · derivative · entry 1

Pittard Dana JH · CIK 0001661939 · VP, Defense Programs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49

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: 0000950170-25-080871 · ownership.xml · derivative · entry 1

Shivram Krishna · CIK 0001512863 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4

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: 0000950170-25-080877 · 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: 61

Underlying: Common Stock · 8 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: 0000950170-25-080870 · 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: 61

Underlying: Common Stock · 8 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: 0000950170-25-080868 · ownership.xml · derivative · entry 1

Bohley G Frederick · CIK 0001741824 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216

Underlying: Common Stock · 34 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: 0000950170-25-076906 · ownership.xml · derivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,292

Underlying: Common Stock · 2,146 shares

Expires 2034-02-21

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.

F3 · derivative.exercise_date: This option vests in three equal annual installments beginning on February 21, 2025.

SEC source: 0000950170-25-076906 · ownership.xml · derivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,266 shares

Expires 2028-02-07

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.

F2 · derivative.exercise_date: This option vested on February 7, 2021.

SEC source: 0000950170-25-076906 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,924

F1 · shares: The sale reported in this Form 4 was pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 19, 2025.

SEC source: 0000950170-25-076906 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,336

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: 0000950170-25-076906 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,190

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: 0000950170-25-076906 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,924

SEC source: 0000950170-25-067999 · ownership.xml · derivative · entry 1

HAZNEDAR CAROLANN I · CIK 0001756619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,809

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F1 · security: The deferred stock units ("DSUs") represent the portion of the reporting person's annual equity award under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy deferred pursuant to the Company's Amended and Restated Non-Employee Director Deferred Compensation Plan.

F2 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or a change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F4 · price: The number of DSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F3 · derivative.exercise_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

F3 · derivative.expiration_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

SEC source: 0000950170-25-067998 · ownership.xml · derivative · entry 5

Christman Philip J · CIK 0001756611 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,570

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F9 · security: The RSUs represent the reporting person's annual equity award under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy.

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F11 · price: The number of RSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F10 · derivative.exercise_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F10 · derivative.expiration_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-067994 · ownership.xml · derivative · entry 1

Altmaier Judy L · CIK 0001474806 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,016

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F1 · security: The deferred stock units ("DSUs") represent the portion of the reporting person's annual equity award under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy deferred pursuant to the Company's Amended and Restated Non-Employee Director Deferred Compensation Plan.

F2 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or a change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F4 · price: The number of DSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F3 · derivative.exercise_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

F3 · derivative.expiration_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

SEC source: 0000950170-25-068001 · ownership.xml · derivative · entry 4

Perna Gustave · CIK 0001942585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,570

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F7 · security: The RSUs represent the reporting person's annual equity award under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc.'s (the "Company") common stock.

F9 · price: The number of RSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F8 · derivative.exercise_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F8 · derivative.expiration_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-068002 · ownership.xml · derivative · entry 4

Shivram Krishna · CIK 0001512863 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,570

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F7 · security: The RSUs represent the reporting person's annual equity award under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy.

F3 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc.'s (the "Company") common stock.

F9 · price: The number of RSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F8 · derivative.exercise_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F8 · derivative.expiration_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-067997 · ownership.xml · derivative · entry 5

BARBOUR D. SCOTT · CIK 0001716232 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,570

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F9 · security: The RSUs represent the reporting person's annual equity award under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy.

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F11 · price: The number of RSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F10 · derivative.exercise_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F10 · derivative.expiration_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-068000 · ownership.xml · derivative · entry 5

Ostojic Sasha · CIK 0001942133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,570

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F9 · security: The RSUs represent the reporting person's annual equity award under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy.

F5 · derivative.exercise_price: Each RSU represents a contingent right to receive one share of the Company's common stock.

F11 · price: The number of RSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F10 · derivative.exercise_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F10 · derivative.expiration_date: The RSUs vest on the date of the next annual meeting of the stockholders of the Company. Unvested RSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-067996 · ownership.xml · derivative · entry 1

EVERITT DAVID C · CIK 0001196652 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,628

Underlying: Common Stock · 1,570 shares

Expires not disclosed

F1 · security: The deferred stock units ("DSUs") represent the portion of the reporting person's annual equity award under the Allison Transmission Holdings, Inc. (the "Company") Eighth Amended and Restated Non-Employee Director Compensation Policy deferred pursuant to the Company's Amended and Restated Non-Employee Director Deferred Compensation Plan.

F2 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or a change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F4 · price: The number of DSUs received was calculated based on $98.72, which was the closing price of the Company's common stock on the date of grant.

F3 · derivative.exercise_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

F3 · derivative.expiration_date: The DSUs vest on the date of the next annual meeting of the stockholders of the Company.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 9

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 25 shares

Expires not disclosed

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.

F12 · derivative.exercise_price: Each dividend equivalent right is the economic equivalent of one share of the Company's common stock.

F13 · derivative.exercise_date: The dividend equivalent rights accrued on previously awarded DSUs and were payable on May 7, 2025, the date of the reporting person's separation from service.

F13 · derivative.expiration_date: The dividend equivalent rights accrued on previously awarded DSUs and were payable on May 7, 2025, the date of the reporting person's separation from service.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 8

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 280 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F10 · derivative.exercise_date: On May 7, 2025, the reporting person was granted 280 DSUs that vested on May 7, 2025.

F10 · derivative.expiration_date: On May 7, 2025, the reporting person was granted 280 DSUs that vested on May 7, 2025.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 7

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 280

Underlying: Common Stock · 280 shares

Expires not disclosed

F9 · security: These DSUs represent a quarterly payment of the portion of the reporting person's annual retainer and other fees under the Company's Eighth Amended and Restated Non-Employee Director Compensation Policy deferred pursuant to the Company's Amended and Restated Non-Employee Director Deferred Compensation Plan. The annual retainer and other fees are payable quarterly in arrears.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F11 · price: The number of DSUs received was calculated based on $97.23, which was the closing price of the Company's common stock on the date of grant.

F3 · derivative.exercise_date: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F3 · derivative.expiration_date: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 6

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 235 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F8 · derivative.exercise_date: On February 7, 2025, the reporting person was granted 235 DSUs that vested on February 7, 2025.

F8 · derivative.expiration_date: On February 7, 2025, the reporting person was granted 235 DSUs that vested on February 7, 2025.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 5

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 309 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F7 · derivative.exercise_date: On November 8, 2024, the reporting person was granted 309 DSUs that vested on November 8, 2024.

F7 · derivative.expiration_date: On November 8, 2024, the reporting person was granted 309 DSUs that vested on November 8, 2024.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 4

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 433 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F6 · derivative.exercise_date: On August 8, 2024, the reporting person was granted 433 DSUs that vested on August 8, 2024.

F6 · derivative.expiration_date: On August 8, 2024, the reporting person was granted 433 DSUs that vested on August 8, 2024.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 3

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,017 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F5 · derivative.exercise_date: On May 9, 2024, the reporting person was granted 2,017 DSUs that vested on May 7, 2025.

F5 · derivative.expiration_date: On May 9, 2024, the reporting person was granted 2,017 DSUs that vested on May 7, 2025.

SEC source: 0000950170-25-068327 · ownership.xml · derivative · entry 2

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 425 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F4 · derivative.exercise_date: On May 8, 2024, the reporting person was granted 425 DSUs that vested on May 8, 2024.

F4 · derivative.expiration_date: On May 8, 2024, the reporting person was granted 425 DSUs that vested on May 8, 2024.

SEC source: 0000950170-25-068327 · ownership.xml · nonDerivative · entry 1

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,134

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.

F1 · security: Represents the deferred stock units ("DSUs") and dividend equivalents payable upon the reporting person's separation from service. The reporting person did not stand for re-election at Allison Transmission Holdings, Inc.'s (the "Company") 2025 annual meeting of stockholders and his term ended on May 7, 2025.

F1 · shares: Represents the deferred stock units ("DSUs") and dividend equivalents payable upon the reporting person's separation from service. The reporting person did not stand for re-election at Allison Transmission Holdings, Inc.'s (the "Company") 2025 annual meeting of stockholders and his term ended on May 7, 2025.

F2 · shares: Includes 3,699 DSUs and 25 related dividend equivalents.

SEC source: 0000950170-25-068325 · ownership.xml · derivative · entry 31

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 526 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F34 · derivative.exercise_date: On February 5, 2024, the reporting person was granted 526 DSUs that vested on February 5, 2024.

F34 · derivative.expiration_date: On February 5, 2024, the reporting person was granted 526 DSUs that vested on February 5, 2024.

SEC source: 0000950170-25-068325 · ownership.xml · derivative · entry 30

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 614 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F33 · derivative.exercise_date: On November 3, 2023, the reporting person was granted 614 DSUs that vested on November 3, 2023.

F33 · derivative.expiration_date: On November 3, 2023, the reporting person was granted 614 DSUs that vested on November 3, 2023.

SEC source: 0000950170-25-068325 · ownership.xml · derivative · entry 29

LAVIN RICHARD P · CIK 0001171774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 547 shares

Expires not disclosed

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.

F3 · derivative.exercise_price: Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock.

F32 · derivative.exercise_date: On August 3, 2023, the reporting person was granted 547 DSUs that vested on August 3, 2023.

F32 · derivative.expiration_date: On August 3, 2023, the reporting person was granted 547 DSUs that vested on August 3, 2023.