Scott A. Mell - 14 Apr 2026 Form 4 Insider Report for Allison Transmission Holdings Inc (ALSN)

Reporting relationship: CFO & Treasurer
Issuer ticker: ALSN
Reported as of: 14 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 16 Apr 2026, 16:05:04 UTC
Prior SEC filing: 24 Mar 2026
Next SEC filing: 11 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Preston B. Ray, as attorney-in-fact

Key filing fact

Scott A. Mell filed Form 4 for Allison Transmission Holdings Inc (ALSN) on 16 Apr 2026.

Key facts

This page summarizes Scott A. Mell's Form 4 filing for Allison Transmission Holdings Inc (ALSN).
7 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 16 Apr 2026, 16:05.

Change

Previous filing in this sequence was filed on 24 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001860129 Primary reporting owner

Mell Scott A

Relationship: CFO & Treasurer
Address: C/O ALLISON TRANSMISSION HOLDINGS, INC., ONE ALLISON WAY, INDIANAPOLIS
Signature: /s/ Preston B. Ray, as attorney-in-fact
Signature date: 16 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALSN transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,842
Change %
Price
Shares after: 2,842
Date: 14 Apr 2026
Ownership: Direct
Footnotes: F1

ALSN transaction

Common Stock

Options Exercise

Transaction value
Shares: +23
Change %: +0.81%
Price
Shares after: 2,865
Date: 14 Apr 2026
Ownership: Direct
Footnotes: F2

ALSN transaction

Common Stock

Tax liability

Transaction value
Shares: -879
Change %: -31%
Price: $128.26^*
Shares after: 1,986
Date: 14 Apr 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ALSN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,951
Change %: -50%
Price: $0.000000^*
Shares after: 1,952
Date: 14 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,951
Exercise price
Footnotes: F1

ALSN transaction Derivative

Dividend Equivalent Rights

Options Exercise

Transaction value
Shares: -14
Change %: -15%
Price: $0.000000^*
Shares after: 80
Date: 14 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14
Exercise price
Footnotes: F2

ALSN transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -891
Change %: -33%
Price: $0.000000^*
Shares after: 1,784
Date: 14 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 891
Exercise price
Footnotes: F1

ALSN transaction Derivative

Dividend Equivalent Rights

Options Exercise

Transaction value
Shares: -9
Change %: -11%
Price: $0.000000^*
Shares after: 71
Date: 14 Apr 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9
Exercise price
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Settlement of restricted stock units ("RSUs") granted on April 14, 2025. Each RSU represents a contingent right to receive one share of Allison Transmission Holdings, Inc. ("ALSN") common stock.

Footnote F2

Settlement of dividend equivalent rights ("DERs"). The DERs accrued when and as dividends were paid on ALSN common stock and vest proportionately with the RSU to which they relate. Each DER is the economic equivalent of one share of ALSN common stock.

Footnote F3

Represents shares withheld by ALSN to satisfy tax withholding obligations on the vesting of RSUs and DERs.