Official announcements (8-K)

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn November 2, 2026, Allison Transmission Holdings, Inc. (“Allison”) published an earnings release reporting its financial results for the three months ended September 30, 2026. A copy of the earnings release is attached as Exhibit 99.1 hereto. Following the publication of the earnings release, Allison will host an earnings call on November 2, 2026 at 5:00 p.m. ET on which its financial results for the three months ended September 30, 2026 will be discussed. The investor presentation materials that will be used for the call are attached as Exhibit 99.2 hereto. On November 2, 2026, Allison posted the materials attached as Exhibits 99.1 and 99.2 on its website …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn August 3, 2026, Allison Transmission Holdings, Inc. (“Allison”) published an earnings release reporting its financial results for the three months ended June 30, 2026. A copy of the earnings release is attached as Exhibit 99.1 hereto. Following the publication of the earnings release, Allison will host an earnings call on August 3, 2026 at 5:00 p.m. ET on which its financial results for the three months ended June 30, 2026 will be discussed. The investor presentation materials that will be used for the call are attached as Exhibit 99.2 hereto. On August 3, 2026, Allison posted the materials attached as Exhibits 99.1 and 99.2 on its website …

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsEntry into a Material Definitive Agreement. On June 11, 2026, Allison Transmission Holdings, Inc. (the “Company”), Allison Transmission, Inc., a wholly-owned subsidiary of the Company (the “Borrower”), Fairfield Manufacturing Company, Inc., a wholly-owned subsidiary of the Borrower (the “Subsidiary Guarantor”), and Citibank, N.A., as administrative agent (in such capacity, the “Administrative Agent”) and as the 2026 refinancing term lender, entered into Amendment No. 6 to Credit Agreement (the “Amendment”), which amends the Second Amended and Restated Credit Agreement, dated as of March 29, 2019 (as amended, restated, amended and restated, supplemented or otherwise …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn June 16, 2026, the Company issued a press release announcing the refinancing. A copy of the press release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. The information contained in this Item 7.01 and in Exhibit 99.1 hereto is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's words(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.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

In the company's wordsOn 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 …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn May 4, 2026, Allison Transmission Holdings, Inc. (“Allison”) published an earnings release reporting its financial results for the three months ended March 31, 2026. A copy of the earnings release is attached as Exhibit 99.1 hereto. Following the publication of the earnings release, Allison will host an earnings call on May 4, 2026 at 5:00 p.m. ET on which its financial results for the three months ended March 31, 2026 will be discussed. The investor presentation materials that will be used for the call are attached as Exhibit 99.2 hereto. On May 4, 2026, Allison posted the materials attached as Exhibits 99.1 and 99.2 on its website (www.allisontransmission.com). As …

Shared documents (Item 9.01)

Attached documents only, such as a press release.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn February 23, 2026, Allison Transmission Holdings, Inc. (“Allison”) published an earnings release reporting its financial results for the three months and year ended December 31, 2025. A copy of the earnings release is attached as Exhibit 99.1 hereto. Following the publication of the earnings release, Allison will host an earnings call on February 23, 2026, at 5:00 p.m. ET on which its financial results for the three months and year ended December 31, 2025 will be discussed. The investor presentation materials that will be used for the call are attached as Exhibit 99.2 hereto. On February 23, 2026, Allison posted the materials attached as Exhibits 99.1 and 99.2 on its …

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsEntry into a Material Definitive Agreement. On January 2, 2026, Allison Transmission Holdings, Inc. (the “Company”), Allison Transmission, Inc., a wholly-owned subsidiary of the Company (the “Borrower”), Citibank, N.A., as administrative agent (the “Administrative Agent”), and certain lenders and letter of credit issuers party thereto entered into Amendment No. 5 to Credit Agreement (the “Amendment”). The Amendment amends the Second Amended and Restated Credit Agreement, dated as of March 29, 2019 (as amended, restated, amended and restated, supplemented or otherwise modified from time to time, including as amended by the Amendment, the “Credit Agreement”), among the …

Completed buying or selling a business or major assets (Item 2.01)

Buying or selling a business changes what the company owns and how it earns money.

In the company's wordsOn January 1, 2026, the Company completed its acquisition (the “Acquisition”) of the off-highway business of Dana Incorporated (“Dana”) pursuant to the previously disclosed Stock Purchase Agreement, dated June 11, 2025 (the “Purchase Agreement”), between the Company and Dana, for a purchase price of $2.732 billion, subject to certain adjustments. The disclosure set forth in this Item 2.01 is qualified in its entirety by reference to the full text of the Purchase Agreement, which was attached as Exhibit 2.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on June 13, 2025 and is incorporated herein by reference.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

In the company's wordsThe information set forth above under Item 1.01 is incorporated herein by reference.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsIn connection with the Acquisition, the Company appointed Craig M. Price as President and Business Unit Leader of Allison Off-Highway Drive and Motion Systems, effective on January 1, 2026. Mr. Price, age 50, served as Senior Vice President and President of Dana’s Off-Highway Drive and Motion Systems since September 2024. Mr. Price has been with Dana for more than 14 years, eight of which he has been a member of Dana’s leadership team, serving in strategic roles impacting every aspect of the business. From 2017 to 2024, as Senior Vice President of Purchasing and Supplier Development, he led all global purchasing activities for the company and was responsible for …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn January 2, 2026, the Company issued a press release announcing the completion of the Acquisition. A copy of the press release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. The information contained in this Item 7.01 and in Exhibit 99.1 hereto is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsEntry into a Material Definitive Agreement. Certain of the information required by this Item 1.01 is included in Item 2.03 below and is incorporated herein by reference.

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

In the company's wordsOn November 21, 2025, the Issuer issued $500 million in aggregate principal amount of 5.875% Senior Notes due 2033 (the “Notes”). The Notes were issued pursuant to an indenture, dated as of November 21, 2025, between the Issuer and Wilmington Trust, National Association, as Trustee (the “Indenture”). The Notes pay interest semi-annually in arrears. The Notes were offered in a private placement exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”). The Company expects to use the net proceeds from the offering and borrowings under a new senior secured incremental term loan facility and its senior secured revolving credit facility, …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOn November 6, 2025, Allison Transmission Holdings, Inc. (the “Company”) announced that its wholly owned subsidiary, Allison Transmission, Inc. (the “ATI”) priced its offering of $500 million in aggregate principal amount of 5.875% Senior Notes due 2033 (the “Notes”) in a private placement (the “Notes Offering”) exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”). The Company also announced that ATI priced its new senior secured incremental term loan facility in an aggregate principal amount of $1,200 million (the “Incremental Term Loan Facility”), which will bear interest at a rate of Term SOFR plus 1.75%. As previously disclosed …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn November 4, 2025, Allison Transmission Holdings, Inc. (the “Company”) announced that Allison Transmission, Inc. (“ATI”), the Company’s wholly owned subsidiary, commenced an offering of approximately $500 million in aggregate principal amount of senior notes, (the “Notes”) in a private placement (the “Offering”) exempt from registration under the Securities Act of 1933 (the “Securities Act”), subject to market conditions. As previously disclosed by the Company in its Current Report on Form 8-K furnished with the Securities and Exchange Commission on October 30, 2025, the Company announced that ATI is seeking to enter into an amendment (the “Credit Agreement Amendment”) …

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

In the company's wordsOn October 30, 2025, Allison Transmission Holdings, Inc. (the “Company”) announced that Allison Transmission, Inc. (“ATI”), the Company’s wholly owned subsidiary, is seeking to enter into an amendment (the “Credit Agreement Amendment”) to the Second Amended and Restated Credit Agreement, dated as of March 29, 2019, as amended October 11, 2019, November 19, 2020, February 28, 2023 and March 13, 2024, among ATI, as borrower, the Company, Citibank, N.A., as administrative agent, Citicorp North America, Inc., as collateral agent, and the other lenders and letter of credit issuers party thereto, which, among other things, provides for a senior secured first-lien incremental …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Changed its company rules or financial year (Item 5.03)

Changes to the company's rules or the dates of its financial year.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.