William Hartzel

CIK: 0001989644

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (28.6%)

Compensation grants

Other (G, F, J, C, D, …)10 (71.4%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

EBS

Emergent BioSolutions Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (14 total)

EBS
Emergent BioSolutions Inc.
Jun 8, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $8.00$14K
EBS
Emergent BioSolutions Inc.
Apr 29, 2026
Award(A)
Direct
100.1K shares-
EBS
Emergent BioSolutions Inc.
Mar 5, 2026
Tax Payment(F)
Direct
9.5K shares at avg. $8.44$80K
EBS
Emergent BioSolutions Inc.
Mar 3, 2026
Award(A)
Employee Stock Option (Right to buy)
Direct
44.8K shares-
EBS
Emergent BioSolutions Inc.
Feb 6, 2026
Disposition(D)
Direct
5.8K shares at avg. $10.92$63K
EBS
Emergent BioSolutions Inc.
Feb 6, 2026
Tax Payment(F)
Direct
630 shares at avg. $10.92$7K
EBS
Emergent BioSolutions Inc.
Nov 11, 2025
Tax Payment(F)
Direct
610 shares at avg. $10.88$7K
EBS
Emergent BioSolutions Inc.
Jul 11, 2025
Tax Payment(F)
Direct
4.3K shares at avg. $7.36$31K
EBS
Emergent BioSolutions Inc.
Jun 8, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $6.63$8K
EBS
Emergent BioSolutions Inc.
Apr 7, 2025
Tax Payment(F)
Direct
561 shares at avg. $4.44$2K
EBS
Emergent BioSolutions Inc.
Mar 6, 2025
Award(A)
Direct
62.5K shares-
EBS
Emergent BioSolutions Inc.
Mar 6, 2025
Award(A)
Employee Stock Options (Right to Buy)
Direct
62.5K shares-
EBS
Emergent BioSolutions Inc.
Mar 5, 2025
Tax Payment(F)
Direct
292 shares at avg. $5.80$2K
EBS
Emergent BioSolutions Inc.
Nov 11, 2024
Tax Payment(F)
Direct
632 shares at avg. $11.97$8K

		Type	Shares	Price		Ownership
Jun 8, 2026	EBS Emergent BioSolutions Inc.	Tax Payment(F)	1,741	$8.00	$13,928	Direct
Apr 29, 2026	EBS Emergent BioSolutions Inc.	Award(A)	100,111	-	$0	Direct
Mar 5, 2026	EBS Emergent BioSolutions Inc.	Tax Payment(F)	9,493	$8.44	$80,121	Direct
Mar 3, 2026	EBS Emergent BioSolutions Inc.	Award(A) Employee Stock Option (Right to buy)	44,834	-	-	Direct
Feb 6, 2026	EBS Emergent BioSolutions Inc.	Disposition(D)	5,771	$10.92	$63,019	Direct
Feb 6, 2026	EBS Emergent BioSolutions Inc.	Tax Payment(F)	630	$10.92	$6,880	Direct
Nov 11, 2025	EBS Emergent BioSolutions Inc.	Tax Payment(F)	610	$10.88	$6,637	Direct
Jul 11, 2025	EBS Emergent BioSolutions Inc.	Tax Payment(F)	4,263	$7.36	$31,376	Direct
Jun 8, 2025	EBS Emergent BioSolutions Inc.	Tax Payment(F)	1,167	$6.63	$7,737	Direct
Apr 7, 2025	EBS Emergent BioSolutions Inc.	Tax Payment(F)	561	$4.44	$2,491	Direct
Mar 6, 2025	EBS Emergent BioSolutions Inc.	Award(A)	62,500	-	-	Direct
Mar 6, 2025	EBS Emergent BioSolutions Inc.	Award(A) Employee Stock Options (Right to Buy)	62,500	-	-	Direct
Mar 5, 2025	EBS Emergent BioSolutions Inc.	Tax Payment(F)	292	$5.80	$1,694	Direct
Nov 11, 2024	EBS Emergent BioSolutions Inc.	Tax Payment(F)	632	$11.97	$7,565	Direct

1-14 of 14 transactions

About Hartzel William

Hartzel William (SEC CIK 0001989644) files insider reports with the SEC as SVP, Bioservices of Emergent BioSolutions Inc. (EBS).

Signal8 holds 12 ownership filings by Hartzel William, all Form 4s, filed between Nov 13, 2024 and Jun 10, 2026. Those filings report 14 transactions, from Nov 11, 2024 to Jun 8, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hartzel William's filings is in GAITHERSBURG, MD.

Recent filings by Hartzel William

Jun 8, 2026: Tax withholding of EBS shares (Form 4, code F).
Apr 29, 2026: Grant or award of EBS shares (Form 4, code A).
Mar 5, 2026: Tax withholding of EBS shares (Form 4, code F).
Mar 3, 2026: Grant or award of EBS derivative securities (Form 4, code A).
Feb 6, 2026: Disposition to issuer transaction of EBS shares (Form 4, code D).

Other insiders filing for Emergent BioSolutions Inc. (EBS)

DeGolyer Donald W, Director
Williams Paul Anthony, SVP, Products Business
Duatschek Stephanie, EVP, CGO
LINDAHL RICHARD S, EVP, Chief Financial Officer
Glessner Coleen, EVP, Quality & Ethics, and CPL
Dayal Sujata Tyagi, Director

How to read Form 4 transaction codes