On January 11, 2022, Janus Henderson Investors US LLC filed an exempt solicitation stating that it has engaged in an open dialogue with Zendesk, Inc. management and the Board of Directors over the past 2 months since the announcement of the proposed acquisition of Momentiv, on October 28, 2021. Janus Henderson stated that it is concerned about the strategic, tactical, and financial rationale of the proposed deal. Janus Henderson expressed its view that the Company should instead renew its focus on executing on the Company standalone business.

Janus Henderson added that it is writing this letter to ensure both management and the Board of Directors fully understand its stance. Janus Henderson also stated that it appreciates the dialogue with both management and the Board of Directors, it hopes to continue the dialogue in an effort to ensure the best possible outcome for the Company shareholders.