Bradley L. Radoff and Michael Torok (together with certain of their affiliates, the “Radoff-JEC Group” or “we”), who collectively own approximately 7.7% of the outstanding shares of Seer, Inc. (NASDAQ: SEER) (“Seer” or the “Company”), today issued the following statement:

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Source: FactSet; total stockholder return graph from December 4, 2020 through April 10, 2026, the trading day immediately prior to the Radoff-JEC Group’s submission of its initial non-binding proposal to acquire the Company.

“When Seer filed its proxy statement, the Board issued a 4,000-word letter to stockholders that we believe was a collection of inaccurate and misleading statements. In fact, the letter ended with the claim that Seer has the right Board and the right strategy.

Seer’s share price is down 97% since its IPO in December of 2020.¹ If Seer had the right Board and the right strategy, would the share price be down 97% over the past five and a half years?

We believe change at Seer is urgently needed. The 97% share price decline supports that conclusion. And the fact that Seer Chair and CEO Omid Farokhzad, M.D. has consistently destroyed stockholder value across numerous companies adds to our view that change is urgently needed.”

The Radoff-JEC Group is seeking stockholder support to elect three new independent, qualified directors – Howard H. Berman, Ph.D., Joshua S. Horowitz and Luis E. Rinaldini – to SEER’s Board at the Annual Meeting of Stockholders on July 28, 2026.

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Vote FOR the Radoff-JEC Group’s Nominees TODAY to Prevent Further Value Destruction

Do NOT Vote for Omid Farokhzad, M.D., Terrance McGuire or Dipchand (Deep) Nishar.

Questions about how to vote? Contact (888) 368-0379 or info@saratogaproxy.com.

Visit www.SaratogaProxy.com/SEER to learn more.

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