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Emergent BioSolutions Inc. (EBS) institutional ownership

Latest close $7.58 Jul 22, 2026
Market cap$306M 52-week range SectorHealthcare
Funds holding · Q1 2026
178
reported EBS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
100 buyers · 78 sellers

Emergent BioSolutions Inc. (EBS) price and institutional activity

Dates

Q1 2026

$0 bought by 100 investors
Prosight Management, LPAQR Capital Management LLC +98 more
$0 sold by 78 investors
Oak Hill Advisors LPJain Global LLC +76 more
Bought Sold Totals per quarter; hover a bar for the names.

Emergent BioSolutions Inc. (EBS) institutional activity · 178

Investor Type Est. change Change Δ Own Date
Oak Hill Advisors LP · Reduced
Change −2.5M Date Q1 2026
Oak Hill Advisors LP Reduced· Q1 2026 −2.5M Q1 2026
Jain Global LLC · Reduced
Change −744K Date Q1 2026
Jain Global LLC Reduced· Q1 2026 −744K Q1 2026
Prosight Management, LP · New
Change +639K Date Q1 2026
Prosight Management, LP New· Q1 2026 +639K Q1 2026
AQR Capital Management LLC · Added
Change +512K Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +512K Q1 2026
Dimensional · Added
Change +505K Date Q1 2026
Dimensional Added· Q1 2026 +505K Q1 2026
Morgan Stanley · Reduced
Change −413K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −413K Q1 2026
Prudential Financial Inc · Added
Change +359K Date Q1 2026
Prudential Financial Inc Added· Q1 2026 +359K Q1 2026
Susquehanna International Group, LLP · Reduced
Change −329K Date Q1 2026
Susquehanna International Group, LLP Reduced· Q1 2026 −329K Q1 2026
Vanguard · Added
Change +320K Date Q1 2026
Vanguard Added· Q1 2026 +320K Q1 2026
Two Sigma Investments, LP · Added
Change +319K Δ Own +123.3% Date Q1 2026
Two Sigma Investments, LP Added· Q1 2026 +319K +123.3% Q1 2026
Millennium Management LLC · Added
Change +294K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +294K Q1 2026
BNP Paribas Financial Markets · Added
Change +293K Date Q1 2026
BNP Paribas Financial Markets Added· Q1 2026 +293K Q1 2026
D. E. Shaw & Co., Inc. · Added
Change +281K Δ Own +38.8% Date Q1 2026
D. E. Shaw & Co., Inc. Added· Q1 2026 +281K +38.8% Q1 2026
Jane Street Group, LLC · Reduced
Change −278K Date Q1 2026
Jane Street Group, LLC Reduced· Q1 2026 −278K Q1 2026
Acadian Asset Management LLC · Added
Change +271K Date Q1 2026
Acadian Asset Management LLC Added· Q1 2026 +271K Q1 2026
Data through Q1 2026 · filed May 26, 2026
15 of 178

Famous investor activity in Emergent BioSolutions Inc. (EBS)

Emergent BioSolutions Inc. (EBS) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Williams Paul Anthony · Officer Sell −$25K
Price $8.40 Qty −3K Owned 159K ΔOwn −1.9% Trade date Jul 1, 2026 Filed date Jul 2, 2026
Williams Paul Anthony Officer Sell $8.40 −3K −$25K 159K −1.9% Jul 1, 2026 Jul 2, 2026
Williams Paul Anthony · Officer Tax withholding or exercise payment (F) -$6K
Price $8.00 Qty -694 Owned 162K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Williams Paul Anthony Officer Tax withholding or exercise payment (F) $8.00 -694 -$6K 162K Jun 8, 2026 Jun 10, 2026
Lindahl Richard S. · CFO Tax withholding or exercise payment (F) -$32K
Price $8.00 Qty -4K Owned 374K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Lindahl Richard S. CFO Tax withholding or exercise payment (F) $8.00 -4K -$32K 374K Jun 8, 2026 Jun 10, 2026
Glessner Coleen · Officer Tax withholding or exercise payment (F) -$16K
Price $8.00 Qty -2K Owned 202K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Glessner Coleen Officer Tax withholding or exercise payment (F) $8.00 -2K -$16K 202K Jun 8, 2026 Jun 10, 2026
Hartzel William · Officer Tax withholding or exercise payment (F) -$14K
Price $8.00 Qty -2K Owned 186K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Hartzel William Officer Tax withholding or exercise payment (F) $8.00 -2K -$14K 186K Jun 8, 2026 Jun 10, 2026
Dayal Sujata Tyagi · Director 2 operations −$116K
Price $8.36–$8.94 Qty −14K Owned 101K Trade date May 1, 2026 Filed date May 4, 2026
Dayal Sujata Tyagi Director 2 operations $8.36–$8.94 −14K −$116K 101K May 1, 2026 May 4, 2026
Degolyer Donald W. · Director 2 operations −$130K
Price $8.36–$8.96 Qty −15K Owned 130K Trade date May 1, 2026 Filed date May 4, 2026
Degolyer Donald W. Director 2 operations $8.36–$8.96 −15K −$130K 130K May 1, 2026 May 4, 2026
Zoon Kathryn C. · Director 2 operations −$144K
Price $8.36–$8.97 Qty −17K Owned 80K Trade date May 1, 2026 Filed date May 4, 2026
Zoon Kathryn C. Director 2 operations $8.36–$8.97 −17K −$144K 80K May 1, 2026 May 4, 2026
Dayal Sujata Tyagi · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
Dayal Sujata Tyagi Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
Degolyer Donald W. · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
Degolyer Donald W. Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
Katkin Keith · Director Sell −$128K
Price $8.28 Qty −15K Owned 96K Trade date Apr 30, 2026 Filed date May 4, 2026
Katkin Keith Director Sell $8.28 −15K −$128K 96K Apr 30, 2026 May 4, 2026
Katkin Keith · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
Katkin Keith Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
White Marvin L. · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
White Marvin L. Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
Fowler John D. Jr · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
Fowler John D. Jr Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
Richard Ronald · Director 2 operations 37K
Owned 11K Trade date Apr 30, 2026 Filed date May 4, 2026
Richard Ronald Director 2 operations 37K 11K Apr 30, 2026 May 4, 2026
15 of 65
15 of 65 Sign in to continue to older insider transactions.

Emergent BioSolutions Inc. (EBS) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Oak Hill Advisors LP 3.6M
% of shares outstanding 6.4% Filing date Nov 13, 2024
Oak Hill Advisors LP 3.6M 6.4% Nov 13, 2024
Vanguard Group Inc 3.0M
% of shares outstanding 5.7% Filing date Feb 13, 2024
Vanguard Group Inc 3.0M 5.7% Feb 13, 2024
Charles Schwab Investment Management Inc 2.9M
% of shares outstanding 5.5% Filing date Feb 9, 2024
Charles Schwab Investment Management Inc 2.9M 5.5% Feb 9, 2024
Millennium Management LLC 2.7M
% of shares outstanding 5.2% Filing date Sep 7, 2023
Millennium Management LLC 2.7M 5.2% Sep 7, 2023
Vanguard Group Inc 2.6M
% of shares outstanding 5.1% Filing date Oct 10, 2023
Vanguard Group Inc 2.6M 5.1% Oct 10, 2023
Vanguard Capital Management LLC 2.6M
% of shares outstanding 5.0% Filing date Apr 29, 2026
Vanguard Capital Management LLC 2.6M 5.0% Apr 29, 2026
Charles Schwab Investment Management Inc 2.2M
% of shares outstanding 4.2% Filing date Nov 8, 2024
Charles Schwab Investment Management Inc 2.2M 4.2% Nov 8, 2024
Millennium Management LLC 2.1M
% of shares outstanding 4.0% Filing date Jan 18, 2024
Millennium Management LLC 2.1M 4.0% Jan 18, 2024
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Emergent BioSolutions Inc. (EBS) ownership FAQ

Who owns EBS?

178 reporting institutions disclosed EBS position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.