Allison Transmission (ALSN) CEO granted large restricted stock unit award

Rhea-AI Filing Summary

Graziosi David S. reported acquisition or exercise transactions in this Form 4 filing.

Allison Transmission Holdings reported that Chair, President and CEO David S. Graziosi received a grant of 34320 restricted stock units at no cost. Each RSU represents a contingent right to one share of common stock and vests in three equal annual installments beginning on February 25, 2027.

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^*

Graziosi David S.

(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
X	Officer (give title below)		Other (specify below)
	Chair, President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

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
Restricted Stock Units	(1)	02/25/2026		A		34,320		(2)	(2)	Common Stock	34,320	$0	34,320	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Allison Transmission Holdings, Inc. common stock.

2. The RSUs vest in three equal annual installments beginning on February 25, 2027.

	/s/ Preston B. Ray, attorney-in-fact	02/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did Allison Transmission (ALSN) report for David S. Graziosi?

Allison Transmission reported that Chair, President and CEO David S. Graziosi received a grant of 34320 restricted stock units. These units were awarded at no cost as part of his equity compensation and give him a contingent right to receive common shares in the future.

What does each restricted stock unit granted to ALSN’s CEO represent?

Each restricted stock unit granted to Allison Transmission’s CEO represents a contingent right to receive one share of Allison Transmission Holdings, Inc. common stock. This means the units can convert into an equivalent number of shares once the applicable vesting conditions are satisfied.

When do David S. Graziosi’s ALSN restricted stock units vest?

The restricted stock units granted to David S. Graziosi vest in three equal annual installments beginning on February 25, 2027. After that date, one‑third of the units will vest each year until all granted units have fully vested, assuming applicable conditions are met.

Did David S. Graziosi buy or sell ALSN shares in this Form 4?

No open-market purchase or sale occurred; David S. Graziosi received an award of 34320 restricted stock units at a price of 0.0000 per unit. This Form 4 reflects an equity compensation grant rather than a cash transaction in Allison Transmission common stock.

How many ALSN restricted stock units does David S. Graziosi hold after this grant?

Following this reported transaction, David S. Graziosi holds 34320 restricted stock units directly. These RSUs are subject to the stated vesting schedule, with three equal annual installments beginning on February 25, 2027, before they can convert into common shares.