Emergent BioSolutions EBS Insider Ownership

NYSE EBS

$6.07 -0.29 (-4.55%)

As of: Oct 20, 2026 · 9:45 AM EDT

Insider Holdings by Owner

3.97Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

5.58%

▼-0.367% pp QoQ

Shares Held by Insiders

2.88Mn

filed for Sep 2026

▼-6.17% QoQ

Shares Outstanding

51.60Mn

51,600,000 shares

Direct Holdings

2.88Mn

Indirect: 0

Net Shares Traded (QoQ)

-189.38K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the trailing 12 months, EBS insiders sold $1.26 million worth of shares (138.06K shares) in open-market trades, with no open-market purchases.

Emergent BioSolutions' open-market sales in the past 12 months came from 6 insiders; no insider bought.
Donald W. Degolyer (Director) led open-market sales of Emergent BioSolutions stock over the past 12 months with $443,818 (51.08K shares), most recently on October 7, 2026.
Beyond open-market trades, insiders at Emergent BioSolutions received 585.13K shares in stock awards, acquired 25.75K shares through option exercises and conversions and gave up 145.5K shares to cover taxes or exercise prices in the last 12 months.
Business Quant data puts insider holdings in EBS at 2.86Mn shares across insiders' latest Form 4 filings, down 6.85% from 3.07Mn shares at the end of Q2 2026 and up 22.43% from 2.34Mn shares at the end of Q3 2025.
By type of ownership, EBS insiders hold all of their 2.86Mn shares directly.
EBS's insider total is spread across 17 insiders who have filed a Form 4 in the past two years.
Emergent BioSolutions' three biggest insider holders are Joseph C. Papa (President and CEO, 493.15K shares), Richard S. Lindahl (EVP, Chief Financial Officer, 374.08K shares) and Coleen Glessner (EVP, Quality & Ethics, and CPL, 202.2K shares), based on their latest Form 4 filings.
Of the shares held by EBS insiders, 17.24% belong to Joseph C. Papa.
Institutions held 83.61% of Emergent BioSolutions' outstanding shares in their Q2 2026 13F filings, insiders about 5.54% based on their latest Form 4 filings, and other investors, including the public, the remaining 10.85%.
Over the trailing 12 months, 16 insiders reported transactions in EBS stock across 47 Form 4 filings.
This summary of Emergent BioSolutions insider activity covers Form 4 filings through October 7, 2026.

Form 4 Holdings

Insiders Holding EBS

Insiders 24

Shares held 3.97Mn

Of outstanding 7.70%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Robert Kramer	President And Ceo	506,059	506,059	12.7%	13 Jun, 2023
2	Joseph C Papa	President And Ceo	493,153	493,153	12.4%	01 May, 2026
3	Richard S Lindahl	Evp, Chief Financial Officer	374,083	374,083	9.4%	10 Jun, 2026
4	Coleen Glessner	Evp, Quality Ethics, And Cpl	202,201	202,201	5.1%	10 Jun, 2026
5	Jennifer Lynne Fox	Evp, Ext Aff, Gc, Corp Sec	186,382	186,382	4.7%	12 Jul, 2024
6	William Hartzel	Svp, Bioservices	185,558	185,558	4.7%	10 Jun, 2026
7	Simon C Lowry	Svp, Rd, Cmo	177,914	177,914	4.5%	01 May, 2026
8	Adam Havey	Evp, Business Operations	174,398	174,398	4.4%	13 Jun, 2023
9	Jessica Perl	Svp, General Counsel, Corp Sec	165,286	165,286	4.2%	01 May, 2026
10	Neal Franklin Fowler	Director	160,847	160,847	4.0%	04 May, 2026
11	Paul Anthony Williams	Svp, Products Business	156,098	156,098	3.9%	02 Oct, 2026
12	Zsolt Harsanyi	Chairman	149,076	149,076	3.8%	04 May, 2026
13	Louis W Sullivan	Director	139,098	139,098	3.5%	02 May, 2025
14	Ronald Richard	Director	123,761	123,761	3.1%	04 May, 2026
15	Marvin L White	Director	113,839	113,839	2.9%	04 May, 2026
16	Donald W Degolyer	Director	111,921	111,921	2.8%	07 Oct, 2026
17	Sujata Tyagi Dayal	Director	100,563	100,563	2.5%	04 May, 2026
18	Keith Katkin	Director	96,294	96,294	2.4%	04 May, 2026
19	Atul Saran	Evp, Chief Strat Dev Officer	86,645	86,645	2.2%	02 Mar, 2023
20	Kathryn C Zoon	Director	79,941	79,941	2.0%	04 May, 2026
21	Katherine Strei	Evp, Chief Hr Officer	62,824	62,824	1.6%	02 Mar, 2023
22	Jerome M Hauer	Director	57,508	57,508	1.4%	30 May, 2023
23	George A Joulwan	Director	40,244	40,244	1.0%	31 May, 2022
24	John D Jr Fowler	Director	30,350	30,350	0.8%	04 May, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

3,492 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
07 Oct, 2026	Donald W Degolyer	Director	Disposed S	17,800	$7.09	$126.20K	111,921	Direct
01 Oct, 2026	Paul Anthony Williams	Svp, Products Business	Disposed S	3,000	$6.53	$19.59K	156,098	Direct
01 Jul, 2026	Paul Anthony Williams	Svp, Products Business	Disposed S	3,000	$8.40	$25.20K	159,098	Direct
08 Jun, 2026	William Hartzel	Svp, Bioservices	Disposed F	1,741	$8.00	$13.93K	185,558	Direct
08 Jun, 2026	Richard S Lindahl	Evp, Chief Financial Officer	Disposed F	3,964	$8.00	$31.71K	374,083	Direct
08 Jun, 2026	Coleen Glessner	Evp, Quality Ethics, And Cpl	Disposed F	2,018	$8.00	$16.14K	202,201	Direct
08 Jun, 2026	Paul Anthony Williams	Svp, Products Business	Disposed F	694	$8.00	$5.55K	162,098	Direct
30 Apr, 2026	Zsolt Harsanyi	Chairman	Acquired A	25,344	$0.00	$0	149,076	Direct
30 Apr, 2026	Keith Katkin	Director	Acquired A	25,344	$0.00	$0	111,775	Direct
30 Apr, 2026	Donald W Degolyer	Director	Acquired A	25,344	$0.00	$0	145,202	Direct
30 Apr, 2026	Marvin L White	Director	Acquired A	25,344	$0.00	$0	113,839	Direct
30 Apr, 2026	Ronald Richard	Director	Acquired A	25,344	$0.00	$0	123,761	Direct
30 Apr, 2026	Neal Franklin Fowler	Director	Acquired A	25,344	$0.00	$0	160,847	Direct
30 Apr, 2026	John D Jr Fowler	Director	Acquired A	25,344	$0.00	$0	30,350	Direct
30 Apr, 2026	Sujata Tyagi Dayal	Director	Acquired A	25,344	$0.00	$0	114,324	Direct
30 Apr, 2026	Kathryn C Zoon	Director	Acquired A	25,344	$0.00	$0	97,143	Direct
30 Apr, 2026	Keith Katkin	Director	Disposed S	15,481	$8.28	$128.18K	96,294	Direct
30 Apr, 2026	Ronald Richard	Director	Acquired A	11,296	$0.00	$0	11,296	Direct
30 Apr, 2026	Neal Franklin Fowler	Director	Acquired A	11,296	$0.00	$0	11,296	Direct
30 Apr, 2026	Marvin L White	Director	Acquired A	11,296	$0.00	$0	11,296	Direct

Showing 1 to 20 of 3,492 transactions