Form 4 Filing for Emergent BioSolutions Inc. - Officer Transaction

William Hartzel, SVP, Bioservices at Emergent BioSolutions Inc. (EBS), acquired 100,111 shares of common stock on April 29, 2026, with a reported price of $0.0. This transaction is part of a restricted stock unit grant approved by the Compensation Committee and subsequently by stockholders. The grant, made under the Amended Stock Incentive Plan, vests in three annual installments starting from the anniversary of the approval date, contingent upon continued service. Each restricted stock unit represents one share of common stock, subject to adjustments as per the grant agreement. Following this transaction, Mr. Hartzel directly owns 187,299 shares.