{"url_path":"/sec/alsn/8-k/2026-05-08/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-08","source_url":"https://www.sec.gov/Archives/edgar/data/1411207/0001193125-26-214675-index.html","accession_number":"0001193125-26-214675","cik":"0001411207","ticker":"ALSN","issuer_name":"Allison Transmission Holdings Inc","edgar_url":"https://www.sec.gov/Archives/edgar/data/1411207/0001193125-26-214675-index.html","primary_entity_key":"0001411207","primary_entity_name":"Allison Transmission Holdings Inc"},"word_count":310,"has_tables":true,"body_markdown":"8-K\n\nAllison Transmission Holdings Inc false 0001411207 0001411207 2026-05-06 2026-05-06\n\n \n\n \n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWASHINGTON, D.C. 20549\n\n \n\n \n\nFORM 8-K\n\n \n\n \n\nCURRENT REPORT\n\nPursuant to Section 13 or 15(d)\n\nof the Securities Exchange Act of 1934\n\nDate of Report (Date of earliest event reported): May 6, 2026\n\n \n\n \n\nALLISON TRANSMISSION HOLDINGS, INC.\n\n(Exact name of registrant as specified in its charter)\n\n \n\n \n\n \n\nDelaware\n \n001-35456\n \n26-0414014\n\n(State or other jurisdiction\n\nof incorporation)\n\n \n\n(Commission\n\nFile Number)\n\n \n\n(IRS Employer\n\nIdentification No.)\n\n \n\nOne Allison Way, Indianapolis, Indiana\n \n46222\n\n(Address of principal executive offices)\n \n(Zip Code)\n\nRegistrant’s telephone number, including area code: (317) 242-5000\n\nNot Applicable\n\n(Former name or former address, if changed since last report)\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n☐\n\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n☐\n\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n☐\n\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n☐\n\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\nTitle of each class\n\n \n\nTrading\n\nSymbol(s)\n\n \n\nName of each exchange\n\non which registered\n\nCommon Stock, $0.01 par value\n \nALSN\n \nNew York Stock Exchange\n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\nEmerging growth company ☐\n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐"}