On March 29, 2024, Dynavax Technologies Corporation appointed Ryan Spencer to serve in a temporary capacity as Interim Chief Financial Officer (principal financial officer) of the Company while Kelly MacDonald is on maternity leave, commencing April 1, 2024. Ms. MacDonald is expected to return in early August 2024, at which time Ms. MacDonald will resume her role as Chief Financial Officer (principal financial officer) of the Company. During Ms. MacDonald?s absence, other officers of the Company have assumed certain of Ms. MacDonald?s duties while remaining in their current positions, with the addition of a senior-level consultant with public company Chief Financial Officer experience.

Mr. Spencer currently also serves as the Company?s Chief Executive Officer and as a member of the Board.