0001193125-26-380145.txt : 20260902 0001193125-26-380145.hdr.sgml : 20260902 20260902160015 ACCESSION NUMBER: 0001193125-26-380145 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260831 FILED AS OF DATE: 20260902 DATE AS OF CHANGE: 20260902 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: BARBOUR D. SCOTT CENTRAL INDEX KEY: 0001716232 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-35456 FILM NUMBER: 261354594 MAIL ADDRESS: STREET 1: C/O ADVANCED DRAINAGE SYSTEMS, INC. STREET 2: 4024 GREEN STRIPE LANE CITY: HILLIARD STATE: OH ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Allison Transmission Holdings Inc CENTRAL INDEX KEY: 0001411207 STANDARD INDUSTRIAL CLASSIFICATION: MOTOR VEHICLE PARTS & ACCESSORIES [3714] ORGANIZATION NAME: 04 Manufacturing EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: ONE ALLISON WAY CITY: Indianapolis STATE: IN ZIP: 46222 BUSINESS PHONE: (317) 242-5000 MAIL ADDRESS: STREET 1: ONE ALLISON WAY CITY: Indianapolis STATE: IN ZIP: 46222 4 1 ownership.xml 4 X0609 4 2026-08-31 0001411207 Allison Transmission Holdings Inc ALSN 0001716232 BARBOUR D. SCOTT false C/O ALLISON TRANSMISSION HOLDINGS, INC. ONE ALLISON WAY INDIANAPOLIS IN 46222 true false false false false Dividend Equivalent Rights 2026-08-31 4 A false 3 0 A Common Stock 3 6 D The dividend equivalent rights accrued on previously awarded restricted stock units ("RSUs") and vest proportionately with the RSUs to which they relate. Each dividend equivalent right is the economic equivalent of one share of Allison Transmission Holdings, Inc. common stock. /s/ Preston B. Ray, attorney-in-fact 2026-09-02