JANUS HENDERSON GROUP PLC 8-K

What Happened

• Janus Henderson Group plc reported on June 30, 2026 that the merger with Jupiter Company Limited has been consummated. The company attached a press release announcing the closing (Exhibit 99.1).
• The filing references the original Agreement and Plan of Merger (dated Dec 21, 2025), an amendment to that agreement (dated Mar 24, 2026), and a side letter dated Jun 16, 2026, all included as exhibits or incorporated by reference.

Key Details

• Merger closing announced: June 30, 2026 (press release filed as Exhibit 99.1).
• Principal merger documents on file: Agreement and Plan of Merger (12/21/2025), Amendment No. 1 (3/24/2026), Side Letter (6/16/2026) — exhibits incorporated by reference.
• Corporate governance changes filed: Amended and Restated Memorandum and Articles of Association of Janus Henderson Group Ltd. included as exhibits.
• The 8-K also references related items such as creation of a direct financial obligation, notice regarding listing status, changes in control, and modifications to holders’ rights — with details incorporated by reference to the filing’s Introductory Note and exhibits.

Why It Matters

• The merger is a material corporate event: it changes the company’s ownership and structure and is likely to affect strategy, governance and how the company is reported going forward.
• Investors should review the referenced merger agreements and the press release (Exhibit 99.1) for specifics, and watch for follow-up filings that disclose any financial obligations, listing status changes, director or officer changes, or impacts on shareholder rights.