Allison Transmission Holdings Inc SEC Filing

Allison Transmission Holdings Inc. reports the vesting of restricted stock unit awards for common stock on 02/21/2026 and 02/22/2026.

Accepted by SEC EDGAR 02/25/2026 - 04:25 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Allison Transmission Holdings Inc. reports the vesting of restricted stock unit awards for common stock on 02/21/2026 and 02/22/2026.

The filing lists 483 shares vesting on 02/21/2026 and 695 shares vesting on 02/22/2026, both stated as granted under the issuer's equity compensation plan.

Insights

Compensation & Governance Analyst

Vesting of RSUs for small, routine awards is reported.

The filing documents two restricted stock unit vesting events: 483 shares on 02/21/2026 and 695 shares on 02/22/2026, each described as granted under the issuer equity compensation plan.

These entries are administrative disclosures of equity grant vesting; timing and transfer or sale intentions are not included in the excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001543604
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Allison Transmission Holdings Inc
SEC File Number	001-35456
Address of Issuer	ONE ALLISON WAY Indianapolis INDIANA 46222
Phone	(317) 242-5000
Name of Person for Whose Account the Securities are To Be Sold	Milburn Ryan A.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Merrill Lynch 225 Liberty Street Floor 37 New York NY 10281	1178	144034.06	82805592	02/25/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	02/21/2026	Vesting of restricted stock unit award	Allison Transmission Holdings Inc			483	02/21/2026	Granted as part of issuer equity compensation plan
Common Stock	02/22/2026	Vesting of restricted stock unit award	Allison Transmission Holdings Inc			695	02/22/2026	Granted as part of issuer equity compensation plan

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	02/25/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/19/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Ryan Milburn
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)