Late Filing of Initial Statement of Beneficial Ownership by Ultra Clean Holdings, Inc. CEO

Ultra Clean Holdings, Inc. (UCTT) filed a late initial statement of beneficial ownership of securities for its CEO, Jinsong Xiao. The filing, which was due to an administrative delay, reports that no securities are beneficially owned by Xiao. The document includes a Power of Attorney, appointing Sheri Savage, Paul Y. Cho, Marty Estkowski, and Katarina Uhrinova as attorneys-in-fact to execute and file Forms 3, 4, and 5 on behalf of Xiao. The Power of Attorney remains in effect until Xiao is no longer required to file these forms. The filing was signed by Paul Y. Cho as attorney-in-fact for Jinsong Xiao.