SEC Form 4 · Updated Daily
EBS
— EMERGENT BIOSOLUTIONS INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Intervac, L.L.C. | 10%+ Owner | 4,344,250 | 2012-09-18 | J |
| El-Hibri Fuad | Director | 3,018,644 | 2021-12-03 | J |
| BIOPHARM, L.L.C. | 10%+ Owner | 2,265,043 | 2010-05-27 | J |
| Myers Robert Calvin | Reporting Owner | 1,934,849 | 2006-11-14 | — |
| Biovac, L.L.C. | Reporting Owner | 1,599,155 | 2006-11-14 | — |
| APAX EUROPE IV GP CO LTD | Reporting Owner | 1,455,361 | 2007-03-08 | — |
| Biologika, L.L.C. | Reporting Owner | 1,409,464 | 2008-06-04 | S |
| Michigan Biologic Products, Inc. | Reporting Owner | 1,276,890 | 2008-03-27 | S |
| JP MORGAN PARTNERS GLOBAL INVESTORS LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| J P MORGAN PARTNERS GLOBAL INVESTORS CAYMAN LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JP MORGAN PARTNERS GLOBAL INVESTORS SELLDOWN LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JPMP GLOBAL INVESTORS L P | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JP MORGAN PARTNERS BHCA LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JPMP MASTER FUND MANAGER L P | 10%+ Owner | 727,209 | 2007-03-08 | — |
| J P MORGAN PARTNERS GLOBAL INVESTORS CAYMAN II LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JP MORGAN PARTNERS GLOBAL INVESTORS SELLDOWN II L P | 10%+ Owner | 727,209 | 2007-03-08 | — |
| J P MORGAN PARTNERS GLOBAL INVESTORS A LP | 10%+ Owner | 727,209 | 2007-03-08 | — |
| JPMP CAPITAL CORP. | 10%+ Owner | 727,209 | 2007-03-08 | — |
| Intervac Management, L.L.C. | Reporting Owner | 719,275 | 2006-11-14 | — |
| ARPI, L.L.C. | Reporting Owner | 658,254 | 2006-11-14 | — |
| Kramer Robert | Director · Officer | 506,059 | 2023-06-09 | A |
| Merlin General Partner II LTD (as General Partner of the Merlin Biosciences Fund L.P.) | Reporting Owner | 498,722 | 2007-03-08 | — |
| PAPA JOSEPH C | Director · Officer | 493,153 | 2026-04-29 | A |
| ADVENT PRIVATE EQUITY FUND III A LTD PARTNERSHIP | Reporting Owner | 468,355 | 2007-03-08 | — |
| LINDAHL RICHARD S | Officer | 374,083 | 2026-06-08 | F |
| ADVENT PRIVATE EQUITY FUND III B LTD PARTNERSHIP | Reporting Owner | 229,497 | 2007-03-08 | — |
| Glessner Coleen | Officer | 202,201 | 2026-06-08 | F |
| Duatschek Stephanie | Officer | 197,416 | 2026-08-05 | — |
| Fox Jennifer Lynne | Officer | 186,382 | 2024-07-11 | A |
| Hartzel William | Officer | 185,558 | 2026-06-08 | F |
| Lowry Simon C | Officer | 177,914 | 2026-04-29 | A |
| Havey Adam | Officer | 174,398 | 2023-06-09 | A |
| Perl Jessica | Officer | 165,286 | 2026-04-29 | A |
| Fowler Neal Franklin | Director | 160,847 | 2026-04-30 | A |
| Williams Paul Anthony | Officer | 156,098 | 2026-10-01 | S |
| Harsanyi Zsolt | Director · Officer | 149,076 | 2026-04-30 | A |
| Abdun-Nabi Daniel | Director | 142,617 | 2019-03-04 | S |
| SULLIVAN LOUIS W | Director | 139,098 | 2025-04-30 | A |
| ADVENT PRIVATE EQUITY FUND III D LTD PARTNERSHIP | Reporting Owner | 125,921 | 2007-03-08 | — |
| Richard Ronald | Director | 123,761 | 2026-04-30 | A |
| Dayal Sujata Tyagi | Director | 114,324 | 2026-04-30 | A |
| White Marvin L | Director | 113,839 | 2026-04-30 | A |
| DeGolyer Donald W | Director | 111,921 | 2026-10-07 | S |
| Katkin Keith | Director | 111,775 | 2026-04-30 | A |
| Zoon Kathryn C | Director | 97,143 | 2026-04-30 | A |
| SARAN ATUL | Officer | 86,645 | 2023-02-28 | F |
| Arcuri Edward | Officer | 76,722 | 2007-05-08 | M |
| ADVENT PRIVATE EQUITY FUND III C LTD PARTNERSHIP | Reporting Owner | 64,018 | 2007-03-08 | — |
| Strei Katherine | Officer | 62,824 | 2023-02-28 | F |
| Hauer Jerome M | Director | 57,508 | 2023-05-25 | A |
| Mulligan Seamus | Director | 56,141 | 2019-03-19 | A |
| JOULWAN GEORGE A | Director | 40,244 | 2022-05-26 | A |
| LOCKHART STEPHEN | Officer | 35,313 | 2010-11-11 | M |
| FOWLER JOHN D JR | Director | 30,350 | 2026-04-30 | A |
| Niederhuber John | Director | 30,300 | 2016-05-18 | D |
| Merlin General Partner II LTD (as Managing Partner of the Merlin Biosciences Fund Gbr) | Reporting Owner | 29,972 | 2007-03-08 | — |
| Chatfield Steven | Officer | 28,000 | 2013-03-14 | F |
| Elsey R Don | Officer | 27,379 | 2012-03-13 | A |
| Labinger Barry | Officer | 25,182 | 2015-11-13 | S |
| Bailey Sue | Director | 24,427 | 2021-03-04 | S |
| Keese Kyle | Officer | 18,759 | 2011-03-15 | A |
| ADVENT PRIVATE EQUITY FUND III GMBH & CO KG | Reporting Owner | 18,118 | 2007-03-08 | — |
| Kirk Sean | Officer | 17,776 | 2021-03-31 | F |
| ADVENT PRIVATE EQUITY FUND III AFFILIATES | Reporting Owner | 15,098 | 2007-03-08 | — |
| Emergent BioSolutions Inc. | 10%+ Owner | 13,604 | 2019-05-23 | — |
| Esposito Denise | Officer | 11,926 | 2008-12-12 | M |
| Smith Karen L. | Director | 11,888 | 2021-05-07 | F |
| ADVENT MANAGEMENT III L P | Reporting Owner | 4,530 | 2007-03-08 | — |
| Zink Thomas | Officer | 1,000 | 2007-05-17 | P |
| Gibellini Mauro | Officer | 100 | 2007-06-04 | S |
| MILLER H HAYWOOD III | Officer | 0 | 2023-06-24 | — |
| Microscience Investments LTD | 10%+ Owner | 0 | 2007-03-08 | J |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-07 | DeGolyer Donald W | Open-market sale | 17,800 | $7.09 | 111,921 |
| 2026-10-01 | Williams Paul Anthony | Open-market sale | 3,000 | $6.53 | 156,098 |
| 2026-08-05 | Duatschek Stephanie | — | — | — | 197,416 |
| 2026-07-01 | Williams Paul Anthony | Open-market sale | 3,000 | $8.40 | 159,098 |
| 2026-06-08 | Hartzel William | Tax withholding | 1,741 | $8.00 | 185,558 |
| 2026-06-08 | Glessner Coleen | Tax withholding | 2,018 | $8.00 | 202,201 |
| 2026-06-08 | LINDAHL RICHARD S | Tax withholding | 3,964 | $8.00 | 374,083 |
| 2026-06-08 | Williams Paul Anthony | Tax withholding | 694 | $8.00 | 162,098 |
| 2026-05-01 | Zoon Kathryn C | Open-market sale | 1,057 | $8.97 | 79,941 |
| 2026-05-01 | Zoon Kathryn C | Open-market sale | 16,145 | $8.36 | 80,998 |
| 2026-05-01 | DeGolyer Donald W | Open-market sale | 954 | $8.96 | 129,721 |
| 2026-05-01 | DeGolyer Donald W | Open-market sale | 14,527 | $8.36 | 130,675 |
| 2026-05-01 | Dayal Sujata Tyagi | Open-market sale | 980 | $8.94 | 100,563 |
| 2026-05-01 | Dayal Sujata Tyagi | Open-market sale | 12,781 | $8.36 | 101,543 |
| 2026-04-30 | Harsanyi Zsolt | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Harsanyi Zsolt | Grant / award | 25,344 | $0.00 | 149,076 |
| 2026-04-30 | Fowler Neal Franklin | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Fowler Neal Franklin | Grant / award | 25,344 | $0.00 | 160,847 |
| 2026-04-30 | Zoon Kathryn C | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Zoon Kathryn C | Grant / award | 25,344 | $0.00 | 97,143 |
| 2026-04-30 | Richard Ronald | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Richard Ronald | Grant / award | 25,344 | $0.00 | 123,761 |
| 2026-04-30 | FOWLER JOHN D JR | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | FOWLER JOHN D JR | Grant / award | 25,344 | $0.00 | 30,350 |
| 2026-04-30 | White Marvin L | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | White Marvin L | Grant / award | 25,344 | $0.00 | 113,839 |
| 2026-04-30 | Katkin Keith | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Katkin Keith | Open-market sale | 15,481 | $8.28 | 96,294 |
| 2026-04-30 | Katkin Keith | Grant / award | 25,344 | $0.00 | 111,775 |
| 2026-04-30 | DeGolyer Donald W | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | DeGolyer Donald W | Grant / award | 25,344 | $0.00 | 145,202 |
| 2026-04-30 | Dayal Sujata Tyagi | Grant / award (derivative) | 11,296 | $0.00 | 11,296 |
| 2026-04-30 | Dayal Sujata Tyagi | Grant / award | 25,344 | $0.00 | 114,324 |
| 2026-04-29 | PAPA JOSEPH C | Grant / award | 187,708 | $0.00 | 493,153 |
| 2026-04-29 | Hartzel William | Grant / award | 100,111 | $0.00 | 187,299 |
| 2026-04-29 | Perl Jessica | Grant / award | 104,282 | $0.00 | 165,286 |
| 2026-04-29 | LINDAHL RICHARD S | Grant / award | 162,680 | $0.00 | 378,047 |
| 2026-04-29 | Glessner Coleen | Grant / award | 100,111 | $0.00 | 204,219 |
| 2026-04-29 | Lowry Simon C | Grant / award | 100,111 | $0.00 | 177,914 |
| 2026-04-29 | Williams Paul Anthony | Grant / award | 100,111 | $0.00 | 162,792 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.