MASSACHUSETTS MUTUAL LIFE INSURANCE CO → Janus Henderson Group plc

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.