Form 4 Filing for Williams Paul Anthony

This filing details a Form 4 submission by Williams Paul Anthony, SVP, Products Business at Emergent BioSolutions Inc. On April 29, 2026, Mr. Anthony acquired 100,111 shares of Common Stock at a price of $0.0 per share through a restricted stock unit grant. This transaction, approved by the Compensation Committee and subject to stockholder approval of an amendment to the Company's 2006 Stock Incentive Plan, brings his total post-transaction shares to 162,792. The restricted stock units vest in three annual installments, contingent upon continued service.