Allison Transmission Holdings, Inc. filings document the operating results, governance, capital structure and material events of a NYSE-listed manufacturer of fully automatic transmissions and off-highway drive and motion systems. Form 8-K reports cover quarterly and annual financial results, investor presentation materials, dividend and capital allocation disclosures, and material agreements involving credit facilities and financing arrangements.
Allison's proxy and annual-meeting filings describe board elections, auditor ratification, advisory executive-compensation votes, corporate responsibility and sustainability disclosures, board composition, and compensation plans. The company's filings also identify its common stock, listed under ALSN, and provide formal disclosure around shareholder voting matters, executive severance arrangements and the completed expansion of its off-highway business.
Allison Transmission Holdings reported first quarter 2026 net sales of $1,406 million, up 84% year over year, driven mainly by the newly acquired Allison Off-Highway business unit, which contributed $673 million. Legacy Allison Transmission net sales were $733 million, a 4% decrease from the prior year period.
GAAP net income was $112 million, down from $192 million, as acquisition-related costs, inventory step-up and higher depreciation reduced profit. Diluted EPS was $1.33, while adjusted diluted EPS rose to $2.57, reflecting $216 million of adjusted net income.
Adjusted EBITDA increased to $362 million with a 26% margin. The company generated $156 million of operating cash flow and $103 million of adjusted free cash flow, repaid $150 million on its revolver, paid a $0.29 dividend and repurchased over $20 million of stock. Management reaffirmed full-year 2026 guidance and expects $1,365–$1,515 million of adjusted EBITDA and $655–$805 million of adjusted free cash flow.
Allison Transmission Holdings Inc ownership disclosure: Vanguard Capital Management reported beneficial ownership of 4,340,063 shares of Allison Transmission common stock, equal to 5.22% of the class as of 03/31/2026. The filing shows Vanguard has sole dispositive power over 4,340,063 shares and sole voting power for 626,368 shares.
The Schedule 13G filing is signed by Ashley Grim as Head of Global Fund Administration on 04/29/2026 and includes the standard affiliate disclosure describing funds and managed accounts over which Vanguard exercises dispositive power.
Vanguard Portfolio Management reported beneficial ownership of 4,210,532 shares of Allison Transmission Holdings Inc Common Stock, representing 5.06% of the class as reported in a Schedule 13G. The filing states Vanguard has 21,621 shares of sole voting power and 4,210,532 shares of sole dispositive power. The filing attributes holdings to Vanguard Portfolio Management LLC and affiliated divisions and notes holdings include securities held for Vanguard funds and managed accounts.
Allison Transmission Holdings CFO & Treasurer Scott A. Mell settled previously granted equity awards into common stock. On April 14, 2026, he exercised and settled restricted stock units and related dividend equivalent rights into 2,865 shares of common stock. Of these, 879 shares were withheld by the company at $128.26 per share to cover tax obligations on the vesting, rather than sold in the market. Following these transactions, Mell directly owns 1,986 shares of Allison Transmission common stock. These events reflect routine equity compensation vesting and related tax withholding, not open‑market buying or selling.
Allison Transmission Holdings Inc received an amendment to a Schedule 13G/A reporting disclosure by The Vanguard Group showing no beneficial ownership of Common Stock. The filing states an internal Vanguard realignment effective January 12, 2026 led certain subsidiaries to report separately.
The filing is signed by Ashley Grim, Head of Global Fund Administration, dated 03/26/2026.
Allison Transmission Holdings is asking stockholders to vote at its 2026 virtual annual meeting on May 6, 2026, on electing nine directors, ratifying PricewaterhouseCoopers as 2026 auditor, and approving executive compensation in an advisory vote.
The proxy highlights 2025 results, including net income at 20.7% of net sales and an Adjusted EBITDA margin of 37.5%, up 140 basis points year over year on lower volume. Outside North America On-Highway revenue reached a record level for the fifth straight year and Defense revenue rose 26%.
The company completed the acquisition of Dana’s Off-Highway Drive and Motion Systems business in early 2026, raised its quarterly dividend for the sixth consecutive year, and repurchased about $328 million of stock, equal to 4% of shares outstanding as of December 31, 2024. Governance features include a majority‑independent board, annual director elections with a majority vote standard, proxy access, no poison pill, and strong ESG and safety programs.
Bohley G Frederick reported acquisition or exercise transactions in this Form 4 filing.
Allison Transmission Holdings Inc officer Bohley G Frederick received a grant of 39 dividend equivalent rights tied to previously awarded restricted stock units. Each right is economically equivalent to one share of common stock and vests in step with the related RSUs, bringing his total dividend equivalent rights to 141.
Graziosi David S. reported acquisition or exercise transactions in this Form 4 filing.
Allison Transmission Holdings Inc reported that Chair, President and CEO David S. Graziosi received a grant of 148 dividend equivalent rights on March 20, 2026. These rights accrued on previously awarded restricted stock units and each one is the economic equivalent of one share of common stock, bringing his directly held dividend equivalent rights to 524.
Ostojic Sasha reported acquisition or exercise transactions in this Form 4 filing.
Allison Transmission Holdings Inc director Sasha Ostojic received a small compensation-related award of derivative rights tied to company stock. On the reported date, Ostojic was granted 4 Dividend Equivalent Rights linked to previously awarded restricted stock units, bringing his total to 16 such rights held directly.
Each Dividend Equivalent Right is economically equal to one share of Allison Transmission common stock and vests in step with the underlying restricted stock units. This is a routine equity-based compensation adjustment rather than an open-market purchase or sale of shares.