[Form 4] Allison Transmission Holdings Inc Insider Trading Activity

Rhea-AI Filing Summary

John Coll, Senior Vice President, Global MSS at Allison Transmission Holdings Inc (ALSN), reported a sale of 1,788 shares of Allison common stock on 09/30/2025 at a price of $84.32 per share. After the reported sale, Mr. Coll directly owns 11,812 shares. The filing also discloses 8,906 shares held indirectly through the "John Coll Trust dated 5/2/2005.

The sale was executed under a pre-established Rule 10b5-1 trading plan adopted on November 26, 2024, indicating the transaction followed an automated plan rather than an ad hoc discretionary sale. The report presents a routine insider disposition rather than a change in employment, control, or company guidance.

Insights

Securities Analyst

TL;DR: Insider sold 1,788 shares under a 10b5-1 plan; transaction appears routine and non-material to ALSN's capitalization.

The transaction is a planned sale by an officer under a Rule 10b5-1 program, which reduces the likelihood the sale reflects undisclosed company-specific information. The size of the sale (1,788 shares at $84.32) and remaining direct and indirect holdings (11,812 direct; 8,906 indirect) are small relative to a public company's outstanding shares, so this filing is unlikely to be material to valuation or market liquidity.

Corporate Governance Expert

TL;DR: The officer used a pre-established trading plan; governance procedures appear followed, suggesting compliance with insider-trading controls.

Disclosure notes the Rule 10b5-1 plan adoption date, indicating adherence to accepted governance practices for scheduled insider transactions. The Form 4 shows proper reporting of direct and indirect ownership and a signed filing by attorney-in-fact, reflecting procedural compliance rather than 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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

1. Name and Address of Reporting Person^*

Coll John

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Global MSS

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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
Common Stock	09/30/2025		S		1,788(1)	D	$84.32	11,812	D
Common Stock								8,906	I	By John Coll Trust dated 5/2/2005

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

Explanation of Responses:

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

	/s/ Preston B. Ray, attorney-in-fact	10/01/2025
	** 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 John Coll report on his ALSN Form 4?

He reported a sale of 1,788 shares of Allison common stock on 09/30/2025 at $84.32 per share and holds 11,812 shares directly after the sale.

Was the ALSN insider sale part of a 10b5-1 trading plan?

Yes. The filing states the sale was made pursuant to a Rule 10b5-1 trading plan adopted on November 26, 2024.

Does John Coll hold shares indirectly in ALSN?

Yes. The Form 4 discloses 8,906 shares held indirectly through the John Coll Trust dated 5/2/2005.

Does this Form 4 indicate any change in Mr. Coll’s role at Allison?

No. The filing lists his title as SVP, Global MSS and does not report any change in employment or role.