{"url_path":"/sec/jhg/8-k/2026-06-30/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-30","source_url":"https://www.sec.gov/Archives/edgar/data/1274173/0001104659-26-079401-index.html","accession_number":"0001104659-26-079401","cik":"0001274173","ticker":"JHG","issuer_name":"Janus Henderson Group Ltd.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1274173/0001104659-26-079401-index.html","primary_entity_key":"0001274173","primary_entity_name":"JANUS HENDERSON GROUP PLC"},"word_count":558,"has_tables":true,"body_markdown":"false\n--12-31\n0001274173\nJANUS HENDERSON GROUP PLC\n\n0001274173\n\n2026-06-30\n2026-06-30\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\nWASHINGTON, D.C. 20549\n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT REPORT**\n\n**Pursuant to Section 13 or 15(d) of the**\n\n**Securities Exchange Act of 1934**\n\n \n\nDate of Report (Date of earliest event reported):\nJune 30, 2026\n\n  \n\n**Commission File Number\n001-38103**\n\n \n\n \n\n \n\n**JANUS HENDERSON GROUP LTD.**\n\n(Exact name of registrant\nas specified in its charter)\n\n \n\n**Jersey, Channel Islands**\n**98-1376360**\n\n(State or other jurisdiction of\n(I.R.S. Employer\n\nincorporation or organization)\nIdentification No.)\n\n \n\n**201 Bishopsgate**\n**EC2M3AE**\n\nLondon, United\nKingdom\n\n(Zip Code)\n\n(Address of principal executive offices)\n \n\n \n\n**+44 (0) 20 7818 1818**\n\n(Registrant’s telephone number, including\narea code)\n\n \n\n**Janus Henderson Group plc\n\nDecember 31**\n\n(Former name, former address and former fiscal year, if changed since last report)\n\n \n\nSecurities registered\npursuant to Section 12(b) of the Act:\n\n** **\n\nTitle of each class\nTrading Symbol(s)\nName\nof each exchange on which registered\n\nCommon Stock, $1.50 Per Share Par Value\nJHG\nNew York Stock Exchange\n\n \n\nCheck\nthe appropriate box below if the Form 8 K filing is intended to simultaneously satisfy the filing obligation of the registrant under\nany of the following provisions (see General Instruction A.2. below):\n\n \n\n¨Written communications pursuant\nto Rule 425 under the Securities Act (17 CFR 230.425)\n\n¨Soliciting material pursuant\nto Rule 14a 12 under the Exchange Act (17 CFR 240.14a 12)\n\n¨Pre-commencement communications\npursuant to Rule 14d 2(b) under the Exchange Act (17 CFR 240.14d 2(b))\n\n¨Pre-commencement communications\npursuant to Rule 13e 4(c) under the Exchange Act (17 CFR 240.13e 4(c))\n\n \n\nIndicate\nby check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405\nof this chapter) or Rule 12b 2 of the Securities Exchange Act of 1934 (§240.12b 2 of this chapter).\n\n \n\nEmerging growth company ¨\n\n \n\nIf\nan emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for\ncomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange\nAct. o\n\n \n\n \n\n \n\n \n\n \n\n \n\n**Introductory Note**\n\n \n\nOn June 30, 2026 (the “Closing Date”),\nJupiter Company Limited, a company incorporated in Jersey (“Parent”), completed the previously announced acquisition\nof Janus Henderson Group plc (the “Company”), pursuant to the terms of the previously announced Agreement and Plan\nof Merger, dated as of December 21, 2025 (the “Original Merger Agreement”), by and among the Company, Parent and\nJupiter Merger Sub Limited, a company incorporated in Jersey and a wholly owned subsidiary of Parent (“Merger Sub”),\nas amended by Amendment No. 1 to the Agreement and Plan of Merger, dated as of March 24, 2026 (the “Amendment”),\nand as further amended and supplemented by the side letter agreement, dated as of June 16, 2026 (the “Side Letter”\nand, the Original Merger Agreement, as amended, supplemented and otherwise modified by the Amendment and the Side Letter, the “Amended\nMerger Agreement”).\n\n \n\nPursuant to the terms of the Amended Merger Agreement,\nMerger Sub merged with and into the Company (the “Merger”) in accordance with the Companies (Jersey) Law 1991, with\nthe Company surviving such Merger as a wholly owned subsidiary of Parent and changing its name to “*Janus Henderson Group Ltd.*”\n(also referred to herein as the “Surviving Company”). Capitalized terms used but not defined herein shall have the\nmeanings ascribed to such terms in the Amended Merger Agreement."}