X0306 4 2017-05-30 1 0001065865 JANUS CAPITAL GROUP INC JNS 0001582601 McPeek Jennifer J 151 DETROIT STREET DENVER CO 80206 0 1 0 0 EVP, Chief Financial Officer Common Stock 2017-05-30 4 D 0 157111 D 0 D Common Stock 2017-05-30 4 D 0 754.265 D 0 I Held by ESOP On May 30, 2017, pursuant to that certain Agreement and Plan of Merger, dated as of October 3, 2016 (the "Merger Agreement"), by and among Henderson Group plc ("Henderson"), a company incorporated in Jersey, Horizon Orbit Corp., a Delaware corporation and direct wholly-owned subsidiary of Henderson ("Merger Sub"), and Janus Capital Group Inc., a Delaware corporation ("JCG"), JCG and Henderson (which has been renamed as Janus Henderson Group plc ("Janus Henderson")) completed the merger-of-equals whereby the Merger Sub merged with and into JCG, with JCG surviving the merger as a direct wholly-owned subsidiary of Janus Henderson (the "Merger"). Pursuant to the Merger Agreement, each share of JCG common stock, par value $0.01 per share ("Common Stock"), issued and outstanding immediately prior to the completion of the Merger was automatically converted into the right to receive 0.47190 of a fully paid up Janus Henderson ordinary share, par value Pound 0.125 per share ("Ordinary Shares"), together with cash in lieu of any fractional Ordinary Share. /s/ Sue J. Armstrong, Attorney-in-Fact for Jennifer J. McPeek 2017-06-01