Allison Transmission (NYSE: ALSN) CFO sells 2,270 shares at $125 after option exercise

Rhea-AI Filing Summary

Allison Transmission Holdings CFO & Treasurer Scott A. Mell reported an option exercise and related share sales. He exercised employee stock options to acquire 1,337 shares of Common Stock at $89.41 per share, then executed open-market sales totaling 2,270 shares at $125.00 per share.

After these transactions, Mell directly holds 1,053 shares of Common Stock. The filing shows a net sale of shares, reflecting an exercise-and-sell pattern that converts a portion of his equity compensation into cash while retaining a smaller remaining share position.

Insights

Insider transactions analyst

CFO executes options and sells shares in a routine-sized liquidity move.

Scott A. Mell, CFO & Treasurer of Allison Transmission Holdings, exercised employee stock options for 1,337 shares at an exercise price of $89.41 per share and sold 2,270 shares of Common Stock at $125.00 per share.

The pattern combines an option exercise with open-market sales, a common way to monetize equity awards. Following these trades, Mell directly holds 1,053 shares, so his remaining equity stake is smaller but still present. No Rule 10b5-1 trading plan reference appears in the provided data.

The filing’s transactionSummary shows a net-sell direction, yet the overall scale is limited to a few thousand shares. From an investment-thesis perspective, this looks like routine personal liquidity rather than a transformative signal, though future company filings will give broader context on overall insider activity.

Insider Trade Summary

Net Seller: 2,270 shares ($283,750)

Net Sell 4 txns

Insider Mell Scott A

Role CFO & Treasurer

Sold 2,270 shs ($284K)

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (right to buy)	1,337	$0.00	--
Sale	Common Stock	933	$125.00	$117K
Exercise	Common Stock	1,337	$89.41	$120K
Sale	Common Stock	1,337	$125.00	$167K

Holdings After Transaction: Employee Stock Option (right to buy) — 6,687 shares (Direct, null); Common Stock — 1,053 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 2,270 shares Sale price: $125.00 per share Options exercised: 1,337 shares +4 more

7 metrics

Shares sold 2,270 shares Total Common Stock sold in open-market transactions

Sale price $125.00 per share Price for Common Stock open-market sales

Options exercised 1,337 shares Employee Stock Option exercise into Common Stock

Option exercise price $89.41 per share Exercise price for Employee Stock Option

Shares held after 1,053 shares Direct Common Stock holdings after transactions

Net buy/sell shares 2,270 shares net-sell Transaction summary netBuySellShares and direction

Option expiration April 14, 2035 Expiration date of Employee Stock Option position

Key Terms

open-market sale, Employee Stock Option (right to buy), Exercise or conversion of derivative security, net-sell, +1 more

5 terms

open-market sale financial

"transaction_action: "open-market sale" for Common Stock transactions"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Employee Stock Option (right to buy) financial

"security_title: "Employee Stock Option (right to buy)" in derivative entry"

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

net-sell financial

"transactionSummary shows netBuySellDirection: "net-sell""

vests in three equal installments financial

"footnote: "This option vests in three equal installments beginning on April 14, 2026.""

Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Mell Scott A

(Last) (First) (Middle)

C/O ALLISON TRANSMISSION HOLDINGS, INC.

ONE ALLISON WAY

(Street)

INDIANAPOLIS INDIANA 46222

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	CFO & Treasurer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

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

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

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

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	05/08/2026		S		933	D	$125	1,053	D
Common Stock	05/08/2026		M		1,337	A	$89.41	2,390	D
Common Stock	05/08/2026		S		1,337	D	$125	1,053	D

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
Employee Stock Option (right to buy)	$89.41	05/08/2026		M			1,337	(1)	04/14/2035	Common Stock	1,337	$0	6,687	D

Explanation of Responses:

1. This option vests in three equal installments beginning on April 14, 2026.

	/s/ Preston B. Ray, as attorney-in-fact	05/11/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Allison Transmission (ALSN) CFO Scott A. Mell report in this Form 4?

He reported an option exercise and related share sales. Mell exercised employee stock options for 1,337 Common shares at $89.41 and sold a total of 2,270 Common shares at $125.00, leaving him with 1,053 directly held shares afterward.

How many Allison Transmission (ALSN) shares did the CFO sell and at what price?

Scott A. Mell sold 2,270 shares of Allison Transmission Common Stock. The reported open-market sale price was $125.00 per share, executed in two transactions of 1,337 and 933 shares on the same date, according to the Form 4 details.

What stock options did the Allison Transmission (ALSN) CFO exercise?

Mell exercised Employee Stock Options covering 1,337 shares of Allison Transmission Common Stock. The options had an exercise price of $89.41 per share and an expiration date of April 14, 2035, with vesting described as three equal installments beginning April 14, 2026.

How many Allison Transmission (ALSN) shares does the CFO hold after these transactions?

After completing the reported transactions, Scott A. Mell directly holds 1,053 shares of Allison Transmission Common Stock. This figure reflects his position following the option exercise of 1,337 shares and open-market sales totaling 2,270 shares disclosed in the Form 4.

Does the Allison Transmission (ALSN) Form 4 indicate a net buy or net sell by the CFO?

The Form 4 indicates a net-sell position. The transaction summary shows 2,270 shares sold and 1,337 shares acquired via option exercise, resulting in net sell shares of 2,270, with the filing categorizing the overall direction as “net-sell.”