[Form 4] ALLISON TRANSMISSION HOLDINGS, INC. Insider Trading Activity

Rhea-AI Filing Summary

Sasha Ostojic, a director of Allison Transmission Holdings, Inc. (ALSN), acquired four dividend equivalent rights on 08/29/2025 that relate to previously awarded restricted stock units (RSUs). The dividend equivalent rights vest proportionately with the underlying RSUs and each right represents the economic equivalent of one share of common stock. Following the reported transaction, the filing shows 8 shares beneficially owned in a direct ownership form. The transaction was reported on a Form 4 signed by an attorney-in-fact on 09/03/2025.

Positive

• Acquisition of four dividend equivalent rights tied to previously awarded RSUs, indicating vesting of compensation-related awards.
• Beneficial ownership increased to 8 shares in direct form following the reported transaction.
• Form 4 filed and signed (attorney-in-fact), demonstrating compliance with Section 16 reporting requirements.

Negative

• None.

Insights

Financial Analyst

TL;DR: Minor insider acquisition from RSU dividend equivalents increases direct holdings to eight shares; immaterial to valuation.

The filing documents the accrual and vesting of four dividend equivalent rights tied to earlier RSU awards, with each right economically equal to one share. The four rights were recorded as acquired on 08/29/2025 at a $0 price, and the reporting line shows total direct beneficial ownership of eight shares after the transaction. This is a routine compensation-related adjustment rather than an open-market purchase or sale, so it has negligible impact on Allison Transmission's capitalization or liquidity.

Corporate Governance Expert

TL;DR: Routine vesting-related disclosure by a director; indicates standard equity compensation mechanics and proper Section 16 reporting.

The Form 4 describes dividend equivalent rights that vest with RSUs and become economically equivalent to common shares. Reporting by a director and signature by an attorney-in-fact indicate compliance with insider reporting requirements. The transaction increases direct beneficial ownership modestly to eight shares and appears to be administrative disclosure of compensation vesting rather than a governance concern.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Ostojic Sasha

(Last) (First) (Middle)

C/O ALLISON TRANSMISSION HOLDINGS, INC.

ONE ALLISON WAY

(Street)

INDIANAPOLIS IN 46222

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Allison Transmission Holdings Inc [ ALSN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Dividend Equivalent Rights	(1)	08/29/2025		A		4		(1)	(1)	Common Stock	4	$0	8	D

Explanation of Responses:

1. 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.

	/s/ Preston B. Ray, attorney-in-fact	09/03/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Sasha Ostojic report on Form 4 for ALSN?

The Form 4 reports acquisition of four dividend equivalent rights on 08/29/2025 related to previously awarded RSUs, resulting in 8 shares beneficially owned directly.

What are dividend equivalent rights in this Form 4?

The filing states each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings common stock and vests proportionately with the related RSUs.

Was there any purchase price for the acquired rights?

The transaction is reported with a $0 price, consistent with dividend equivalents accruing on RSUs rather than an open-market purchase.

When was the transaction dated and when was the Form 4 signed?

The transaction date shown is 08/29/2025 and the Form 4 bears a signature by an attorney-in-fact dated 09/03/2025.

Does this Form 4 indicate a material change in ownership for ALSN?

No; the filing documents a small vesting-related increase to 8 shares of direct beneficial ownership, which is immaterial to company capitalization.