Janus Henderson Group plc: 5%+ holders

Janus Henderson Group plc has 10 Schedule 13D or 13G filings on record since 2025-10-27. 2 holders' latest filing reports 5% or more of ordinary shares, $1.50 per share par value. Each figure below is the holder's own, as filed, with the filing linked.

Holders

Purpose of Transaction (Item 4)

Trian Fund Management, L.P.

Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2026, the transactions contemplated by the Agreement and Plan of Merger, dated December 21, 2025 (as amended by Amendment No. 1 to the Agreement and Plan of Merger, dated as of March 24, 2026 and the side letter agreement, dated as of June 16, 2026, the "Merger Agreement"), by and among Parent, Merger Sub and the Issuer were consummated. Pursuant to the Merger Agreement, Merger Sub merged with and into the Issuer (the "Merger"), and the Issuer continued as the surviving company and converted to a private limited company incorporated under the laws of Jersey and changed its name from "Janus Henderson Group plc" to "Janus Henderson Group Ltd.". At the effective time of the Merger (the "Effective Time"), each ordinary share, par value $1.50 per share, of the Issuer (an "Ordinary Share" and collectively, the "Ordinary Shares") outstanding immediately prior to the Effective Time (except for Ordinary Shares held by Parent and as otherwise provided in the Merger Agreement) was converted into the right to receive $52.00 per share in cash, without interest (the "Merger Consideration"). Immediately prior to the Effective Time, Trian Partners AM Holdco II, Ltd. and certain other funds affiliated with Trian Fund Management, L.P. ("Trian") contributed 25,136,205 Ordinary Shares to Jupiter Topco LLC ("Topco") in exchange for equity interests of Topco of equivalent value. All other …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-06-30; the filing has the rest

Massachusetts Mutual Life Insurance Company

Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following: On June 30, 2026, the transactions contemplated by the Merger Agreement and the Equity Commitment Letter were consummated. As a result of the Merger, the Ordinary Shares will no longer be listed on The New York Stock Exchange and will be deregistered under Section 12(b) of the Exchange Act. Additionally, as a result of the Merger, MassMutual no longer beneficially owns any Ordinary Shares, though MassMutual retains an equity interest in the surviving company through its beneficial ownership of preferred equity interests of Topco.Item 4 of the SCHEDULE 13D/A filed 2026-07-02

Timeline

Where this comes from

Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.

Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.

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