SEC Form 3 · accession 0002149575-26-000007

Emergent BioSolutions Inc. · EBS

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — EVP, CGO

Period of report

Aug 5, 2026

Accepted (ET)

Aug 12, 2026 · 9:16 am EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001367644

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1	holding	—	—		—	197,416	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Employee Stock Option (Right to buy)^F2	$59.07	holding	—	—	—	—	Jul 8, 2028	Common Stock	6,772	—	D
Employee Stock Option (Right to buy) (Common Stock)^F3	$41.38	holding	—	—	—	—	Feb 28, 2029	Common Stock	7,250	—	D
Employee Stock Option (Right to buy) (Common Stock)^F4	$11.66	holding	—	—	—	—	Mar 5, 2030	Common Stock	2,308	—	D
Employee Stock Option (Right to buy) (Common Stock)^F5	$8.39	holding	—	—	—	—	Jun 8, 2030	Common Stock	9,231	—	D
Employee Stock Option (Right to buy) (Common Stock)^F6	$2.33	holding	—	—	—	—	Mar 12, 2031	Common Stock	125,000	—	D
Employee Stock Option (Right to buy) (Common Stock)^F7	$5.80	holding	—	—	—	—	Mar 5, 2032	Common Stock	62,500	—	D
Employee Stock Option (Right to buy) (Common Stock)^F8	$8.99	holding	—	—	—	—	Mar 2, 2033	Common Stock	44,834	—	D

F1Consists of 55,639 shares of common stock and 141,777 unvested RSUs from the Emergent Stock Incentive Plan. Each RSU represents a right to receive one share of common stock. The RSUs vest in three equal installments annually on the day prior to the anniversary date of the grant.
F2Granted on July 9, 2021 and as of the date of this filing all of the shares underlying the option are vested and exercisable.
F3Granted on March 1, 2022 and as of the date of this filing all of the shares underlying the option are vested and exercisable.
F4Granted on March 6, 2023 and as of the date of this filing all of the shares underlying the option are vested and exercisable.
F5Granted on June 9, 2023 and as of the date of this filing all of the shares underlying the option are vested and exercisable.
F6Granted on March 13, 2024 and vests in three installments beginning on the day prior to the anniversary date of the grant. As of the date of this filing, 83,250 of the shares underlying the option are vested and exercisable.
F7Granted on March 6, 2025 and vests in three installments beginning on the day prior to the anniversary date of the grant. As of the date of this filing, 20,813 of the shares underlying the option are vested and exercisable.
F8Granted on March 3, 2026 and vests in three installments beginning on the day prior to the anniversary date of the grant.

Exhibit list: Ex 24.1 - Power of Attorney