Henderson Group: Deferred Settlement Trading (ASX)

Merger of Henderson Group plc and Janus Capital Group Inc.

23 May 2017

The below notification was required to be announced under the Australian Stock Exchange Listing Rules.

Securities Trading on Deferred Settlement Basis

We wish to advise that following the recent approval by shareholders of (amongst other things) the consolidation of our shares (and CHESS Depositary Interests (CDIs)), the CDIs will commence trading on a deferred settlement trading basis on Thursday 25 May 2017 up to the close of trading on ASX on Friday 2 June 2017. The ASX code during this period will be HGGDA.

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In connection with the proposed merger, Henderson has filed a registration statement on Form F-4 with the U.S. Securities and Exchange Commission (SEC), containing a proxy statement of Janus Capital Group and other documents regarding the proposed merger. Before making any voting or investment decision, the respective investors and shareholders of Henderson and Janus Capital Group are urged to carefully read the entire registration statement of Henderson, including the proxy statement of Janus Capital Group, and any other relevant documents filed by either company with the SEC, as well as any amendments or supplements to those documents, because they contain important information about Henderson, Janus Capital Group and the proposed merger. The registration statement and other related documents filed by Henderson and Janus Capital Group will be available electronically without charge at the SEC's website, www.sec.gov. Materials filed with the SEC may also be obtained without charge at Henderson's website, www.henderson.com or at Janus Capital Group's website www.janus.com, respectively.