Form 4 Filing for Philip J. Christman

This filing reports on a transaction by Philip J. Christman, a director at Allison Transmission Holdings Inc. (ALSN). On August 31, 2026, Mr. Christman acquired 3 Dividend Equivalent Rights, which represent the economic equivalent of 3 shares of common stock. These rights accrued on previously awarded restricted stock units (RSUs) and vest proportionally with the RSUs. The transaction code is "A" for acquisition, with a transaction price of $0.00. Following the transaction, Mr. Christman holds 6 such rights. The filing also notes that these rights are directly owned.