The Board of Directors (the “Board”) of Sera Prognostics, Inc. (the “Company”) expects the highest standards of conduct for its employees, officers and directors. A central aspect of this commitment is sound corporate governance. The Board serves as a prudent fiduciary for shareholders of the Company and oversees its management. In furtherance of these responsibilities and to fulfill its duty, the Board follows, and causes Company management to follow, the policies, procedures and standards set forth in the following documents. These documents are subject to modification at any time as the Board may deem appropriate in the best interests of the Company or as required by applicable laws and regulations.