SEC Filing: Ownership Change of BARBOUR D. SCOTT in Allison Transmission Holdings Inc

This SEC filing details a transaction by BARBOUR D. SCOTT, a director at Allison Transmission Holdings Inc. The transaction, dated August 31, 2026, involves the acquisition of 3 Dividend Equivalent Rights (DERs) related to previously awarded restricted stock units (RSUs). These DERs have a reported value of $0 per share and are economically equivalent to shares of the company's common stock. Following this transaction, BARBOUR D. SCOTT now holds 6 DERs. The filing indicates that the DERs vest proportionally with the RSUs to which they relate, as further explained in footnote F1.