David S. Graziosi - 21 Aug 2026 Form 4 Insider Report for Allison Transmission Holdings Inc (ALSN)

Reporting relationship: Chair, President and CEO, Director
Issuer ticker: ALSN
Reported as of: 21 Aug 2026
Net transaction value: -$3,551,470
SEC form: 4
Accepted by SEC: 25 Aug 2026, 21:10:22 UTC
Prior SEC filing: 02 Jun 2026
Next SEC filing: 02 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Preston B. Ray, attorney-in-fact

Filing notes and source

Key filing fact

David S. Graziosi filed Form 4 for Allison Transmission Holdings Inc (ALSN) on 25 Aug 2026.

Key facts

This page summarizes David S. Graziosi's Form 4 filing for Allison Transmission Holdings Inc (ALSN).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 25 Aug 2026, 21:10.

Change

Previous filing in this sequence was filed on 02 Jun 2026.
Current net transaction value: -$3,551,470.

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 0001543492 Primary reporting owner

Graziosi David S.

Relationship: Chair, President and CEO, Director
Address: C/O ALLISON TRANSMISSION HOLDINGS, INC., ONE ALLISON WAY, INDIANAPOLIS
Signature: /s/ Preston B. Ray, attorney-in-fact
Signature date: 25 Aug 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: +26,708
Change %: +8.8%
Price: $38.11^*
Shares after: 331,551
Date: 21 Aug 2026
Ownership: Direct

ALSN transaction

Common Stock

Sale

Transaction value: -$1,734,914
Shares: -13,100
Change %: -4%
Price: $132.44
Shares after: 318,451
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F1

ALSN transaction

Common Stock

Sale

Transaction value: -$1,205,565
Shares: -9,050
Change %: -2.8%
Price: $133.21
Shares after: 309,401
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F2

ALSN transaction

Common Stock

Sale

Transaction value: -$610,990
Shares: -4,558
Change %: -1.5%
Price: $134.05
Shares after: 304,843
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

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

ALSN transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -26,708
Change %: -60%
Price: $0.000000^*
Shares after: 17,593
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 26,708
Exercise price: $38.11
Footnotes: F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The price reported is a weighted average price. The shares were sold in multiple transactions at per share prices ranging from $132.000000 to $132.990000. The reporting person undertakes to provide Allison Transmission Holdings, Inc. ("ALSN") or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F2

The price reported is a weighted average price. The shares were sold in multiple transactions at per share prices ranging from $133.000000 to $133.360000. The reporting person undertakes to provide ALSN or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F3

The price reported is a weighted average price. The shares were sold in multiple transactions at per share prices ranging from $134.000000 to $134.120000. The reporting person undertakes to provide ALSN or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F4

This option vested in three equal annual installments beginning on February 24, 2023.