X0508 4 2026-02-17 0001274173 JANUS HENDERSON GROUP PLC JHG 0001837149 Dibadj Ali 201 BISHOPSGATE LONDON X0 EC2M 3AE UNITED KINGDOM 1 1 CEO 0 Common Stock 2026-02-17 4 S 0 127632 49.12 D 449078 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices per share ranging from $49.05 to $49.28, inclusive. The Reporting Person undertakes to provide to the SEC staff, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price. /s/ Lisa Kish, by Power of Attorney for Ali Dibadj 2026-02-17