Allison Transmission (NYSE: ALSN) officer to sell 26,708 option shares

Rhea-AI Filing Summary

Allison Transmission Holdings Inc (ALSN) reported that officer David S. Graziosi plans to sell 26,708 shares of Common Stock under Rule 144. The planned sale, through a broker assisted cashless sale on the NYSE, is tied to the exercise of employee stock options and is dated 08/21/2026.

Key Figures

Shares to be sold: 26,708 shares Aggregate market value: $3,551,469.58 Shares outstanding: 82,578,038 shares +2 more

5 metrics

Shares to be sold 26,708 shares Common Stock of Allison Transmission Holdings Inc under Rule 144

Aggregate market value $3,551,469.58 Value associated with 26,708 shares of Common Stock

Shares outstanding 82,578,038 shares Common Stock outstanding for Allison Transmission Holdings Inc

Planned sale date 08/21/2026 Date associated with the Rule 144 sale and option exercise

Security type Common Stock Class of securities subject to the Rule 144 notice

Key Terms

Rule 144, Exercise of employee stock options, Broker assisted cashless sale

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of employee stock options financial

"Common Stock | 08/21/2026 | Exercise of employee stock options"

Broker assisted cashless sale financial

"26708 | 08/21/2026 | Broker assisted cashless sale"

FAQ

What stock is being sold under Rule 144 for ALSN?

The notice covers Common Stock of Allison Transmission Holdings Inc (ALSN), with an intended sale of 26,708 shares in connection with the exercise of employee stock options.

How many ALSN shares does David S. Graziosi plan to sell?

David S. Graziosi plans to sell 26,708 shares of Allison Transmission Holdings Inc Common Stock, as indicated in the Rule 144 notice.

What is the approximate market value of the ALSN shares in the Rule 144 notice?

The Rule 144 notice lists an aggregate market value of approximately $3,551,469.58 for the 26,708 shares of Allison Transmission Holdings Inc Common Stock referenced.

When is the planned Rule 144 sale date for ALSN shares?

The intended date associated with the planned Rule 144 sale of Allison Transmission Holdings Inc Common Stock is 08/21/2026.

How will the ALSN Rule 144 sale be executed?

The sale is described as a broker assisted cashless sale on the NYSE, in connection with the exercise of employee stock options for Allison Transmission Holdings Inc shares.

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Available on EDGAR 08/21/2026 - 04:17 PM Accepted by SEC EDGAR 08/21/2026 - 04:16 PM Learn about SEC filing dates

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	0001543492
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	Graziosi David S.
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	26708	3551469.58	82578038	08/21/2026	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	08/21/2026	Exercise of employee stock options	Allison Transmission Holdings Inc			26708	08/21/2026	Broker assisted cashless sale

* 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	08/21/2026
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	David Graziosi
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)