Atreca, Inc. announced that on September 15, 2023, Herbert Cross, Chief Financial Officer of the Company, resigned from his position, effective September 22, 2023, to pursue a new business opportunity. Mr. Cross' resignation was not due to any disagreement with the Company on any matter relating to the Company?s operations, policies, or practices. The Company thanks Mr. Cross for his contributions and wishes him well in his future endeavors.

In connection with Mr. Cross? resignation, John A. Orwin, Chief Executive Officer of the Company, was appointed to serve as the principal financial officer of the Company, effective as of the Separation Date.