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Form 8-K

sec.gov

8-K — Allison Transmission Holdings Inc

Accession: 0001193125-26-214675

Filed: 2026-05-08

Period: 2026-05-06

CIK: 0001411207

SIC: 3714 (MOTOR VEHICLE PARTS & ACCESSORIES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Submission of Matters to a Vote of Security Holders

Documents

8-K — d29668d8k.htm (Primary)

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8-K

8-K (Primary)

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8-K

Allison Transmission Holdings Inc false 0001411207 0001411207 2026-05-06 2026-05-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 6, 2026

ALLISON TRANSMISSION HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-35456

26-0414014

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

One Allison Way, Indianapolis, Indiana

46222

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (317) 242-5000

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange

on which registered

Common Stock, $0.01 par value

ALSN

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

The Compensation Committee (the “Committee”) of the Board of Directors of Allison Transmission Holdings, Inc. (the “Company”) previously approved the Executive Change in Control and Severance Plan (the “Severance Plan”), which provides severance benefits to senior level employees of Allison Transmission, Inc., a wholly owned subsidiary of the Company, and designated Eric C. Scroggins, the Chief Legal Officer and Assistant Secretary of the Company, as a Tier 1/2 Participant in the Severance Plan. On May 6, 2026, the Committee approved Mr. Scroggins’ participation in the Severance Plan as a Tier 1 Participant. The Severance Plan is listed as an exhibit to the Company’s most recently filed Annual Report on Form 10-K.

Item 5.07

Submission of Matters to a Vote of Security Holders.

On May 6, 2026, the Company held its annual meeting of stockholders. At the annual meeting, stockholders took the following actions:

elected nine directors for one-year terms ending at the 2027 annual meeting of stockholders (Proposal 1);

ratified the appointment of PricewaterhouseCoopers LLP (“PwC”) as the Company’s independent registered public accounting firm for 2026 (Proposal 2); and

approved, in an advisory, non-binding vote, the compensation paid to the Company’s named executive officers (“Executive Compensation”) (Proposal 3).

The vote tabulation for each proposal follows:

Proposal 1 - Election of Directors.

NOMINEES

FOR

AGAINST

ABSTAIN

BROKER NON-VOTES

Judy L. Altmaier

71,134,529

1,454,365

375,889

4,902,906

D. Scott Barbour

72,593,397

355,266

16,120

4,902,906

Philip J. Christman

65,932,457

6,441,896

590,430

4,902,906

David C. Everitt

71,075,137

1,872,463

17,183

4,902,906

David S. Graziosi

71,830,548

1,116,804

17,431

4,902,906

Carolann I. Haznedar

71,744,480

1,190,862

29,441

4,902,906

Sasha Ostojic

72,863,411

84,133

17,239

4,902,906

Gustave F. Perna

72,609,598

339,201

15,984

4,902,906

Krishna Shivram

72,522,639

425,005

17,139

4,902,906

Proposal 2 - Ratification of Appointment of PwC.

FOR

AGAINST

ABSTAIN

77,162,806

690,303

14,580

Proposal 3 - Advisory Vote to Approve Executive Compensation.

FOR

AGAINST

ABSTAIN

BROKER NON-VOTES

70,176,855

2,759,179

28,749

4,902,906

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Allison Transmission Holdings, Inc.

Date: May 8, 2026

By:

/s/ Eric C. Scroggins

Name:

Eric C. Scroggins

Title:

Chief Legal Officer and Assistant Secretary

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