The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 17, 2025 | Maltbie Shane | Chief Financial Officer | Tender(U) | 84K | — | — |
| Sep 17, 2025 | Gerberding Julie L. | Director | Tender(U) | 59K | — | — |
| Sep 17, 2025 | Kohli Aditya | Director | Tender(U) | 698K | — | — |
| Sep 17, 2025 | Dubin Gary | Director | Tender(U) | 17K | — | — |
| Sep 17, 2025 | Hilleman Jeryl L | Director | Tender(U) | 59K | — | — |
| Sep 17, 2025 | Chu Shelley | Director | Tender(U) | 17K | — | — |
| Sep 17, 2025 | Cocero Nanette | Director | Tender(U) | 17K | — | — |
| Sep 17, 2025 | Hershberg Robert | President and CEO, Director | Tender(U) | 1.1M | — | — |
| Sep 17, 2025 | Sepulveda Jaime | Director | Tender(U) | 59K | — | — |
| Sep 17, 2025 | Takeda Pharmaceutical Co Ltd | 10% Owner | Tender(U) | 6.7M | $1.95 | $13.1M |
| Sep 17, 2025 | Topper James N | 10% Owner | Tender(U) | 8.5M | $1.95 | $16.6M |
| Sep 17, 2025 | Topper James N | 10% Owner | Tender(U) | 17K | $1.95 | $34K |
| Jun 23, 2025 | Hilleman Jeryl L | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Dubin Gary | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Gerberding Julie L. | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Cocero Nanette | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Sepulveda Jaime | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Chu Shelley | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Kohli Aditya | Director | Grant(A) | 17K | — | $0 |
| Jun 23, 2025 | Heron Patrick J | Director | Grant(A) | 17K | — | $0 |
| Feb 11, 2025 | Maltbie Shane | Chief Financial Officer | Sell(S) | 4K | $1.76 | $8K |
| Feb 11, 2025 | Hershberg Robert | See Remarks, Director | Sell(S) | 12K | $1.76 | $21K |
| Feb 4, 2025 | Maltbie Shane | Chief Financial Officer | Sell(S) | 4K | $1.89 | $7K |
| Feb 4, 2025 | Hershberg Robert | See Remarks, Director | Sell(S) | 15K | $1.89 | $28K |
| Jun 6, 2024 | Heron Patrick J | Director | Grant(A) | 23K | — | $0 |
| Jun 6, 2024 | Sepulveda Jaime | Director | Grant(A) | 23K | — | $0 |
| Jun 6, 2024 | Hilleman Jeryl L | Director | Grant(A) | 23K | — | $0 |
| Jun 6, 2024 | Gerberding Julie L. | Director | Grant(A) | 23K | — | $0 |
| Jun 6, 2024 | Cocero Nanette | Director | Grant(A) | 23K | — | $0 |
| Jun 6, 2024 | Chu Shelley | Director | Grant(A) | 23K | — | $0 |
| May 22, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.73 | $88K |
| May 21, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.21 | $85K |
| May 20, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $15.45 | $93K |
| May 3, 2024 | Kohli Aditya | Director | Sell(S) | 723 | $14.15 | $10K |
| May 2, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.01 | $84K |
| May 1, 2024 | Kohli Aditya | Director | Sell(S) | 175 | $14.03 | $2K |
| Apr 5, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.44 | $87K |
| Apr 4, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.71 | $88K |
| Apr 4, 2024 | FHMLS X, L.P. | 10% Owner | Buy(P) | 9K | $14.50 | $128K |
| Apr 3, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.93 | $90K |
| Mar 28, 2024 | McLoughlin Sean | Chief Operating Officer | Buy(P) | 1K | $16.98 | $21K |
| Mar 20, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $164,221.00 | $985.3M |
| Mar 19, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $17.42 | $105K |
| Mar 18, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $17.66 | $106K |
| Mar 8, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $18.66 | $112K |
| Mar 7, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $18.37 | $110K |
| Mar 6, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $18.95 | $114K |
| Feb 22, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $15.05 | $90K |
| Feb 21, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.92 | $90K |
| Feb 20, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $14.88 | $89K |
| Feb 12, 2024 | Kohli Aditya | Director | Sell(S) | 6K | $15.32 | $92K |
| Feb 8, 2024 | Borkowski Astrid | Chief Medical Officer | Grant(A) | 54K | — | $0 |
| Feb 8, 2024 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 4K | $14.93 | $59K |
| Feb 8, 2024 | Borkowski Astrid | Chief Medical Officer | Grant(A) | 70K | — | $0 |
| Feb 8, 2024 | Hershberg Robert | See Remarks, Director | Grant(A) | 174K | — | $0 |
| Feb 8, 2024 | Hershberg Robert | See Remarks, Director | Sell(S) | 12K | $14.93 | $173K |
| Feb 8, 2024 | Hershberg Robert | See Remarks, Director | Grant(A) | 227K | — | $0 |
| Feb 8, 2024 | Maltbie Shane | Chief Financial Officer | Grant(A) | 48K | — | $0 |
| Feb 8, 2024 | Maltbie Shane | Chief Financial Officer | Sell(S) | 4K | $14.93 | $53K |
| Feb 8, 2024 | Maltbie Shane | Chief Financial Officer | Grant(A) | 62K | — | $0 |
| Feb 8, 2024 | Kohli Aditya | Director | Sell(S) | 9K | $14.93 | $132K |
| Feb 8, 2024 | Kohli Aditya | Director | Grant(A) | 55K | — | $0 |
| Feb 8, 2024 | Kohli Aditya | Director | Grant(A) | 72K | — | $0 |
| Jan 31, 2024 | McLoughlin Sean | Chief Operating Officer | Grant(A) | 250K | — | $0 |
| Dec 15, 2023 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 10K | $15.50 | $155K |
| Dec 4, 2023 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 10K | $14.50 | $145K |
| Dec 1, 2023 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 10K | $14.20 | $142K |
| Nov 17, 2023 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 10K | $14.00 | $140K |
| Nov 8, 2023 | Borkowski Astrid | Chief Medical Officer | Sell(S) | 5K | $13.00 | $65K |
| Jun 21, 2023 | Borkowski Astrid | Chief Medical Officer | Disposed to issuer(D) | 10K | $16.11 | $161K |
| Jun 7, 2023 | Heron Patrick J | Director, 10% Owner | Grant(A) | 23K | — | $0 |
| Jun 7, 2023 | Hilleman Jeryl L | Director | Grant(A) | 23K | — | $0 |
| Jun 7, 2023 | Sepulveda Jaime | Director | Grant(A) | 23K | — | $0 |
| Jun 7, 2023 | Gerberding Julie L. | Director | Grant(A) | 23K | — | $0 |
| Jun 7, 2023 | Cocero Nanette | Director | Grant(A) | 11K | — | $0 |
| Jun 7, 2023 | Chu Shelley | Director | Grant(A) | 23K | — | $0 |
| May 8, 2023 | Cocero Nanette | Director | Grant(A) | 34K | — | $0 |
| Feb 1, 2023 | Maltbie Shane | Chief Financial Officer | Grant(A) | 43K | — | $0 |
| Feb 1, 2023 | Maltbie Shane | Chief Financial Officer | Grant(A) | 65K | — | $0 |
| Feb 1, 2023 | Hershberg Robert | President and CEO, Director | Grant(A) | 188K | — | $0 |
| Feb 1, 2023 | Hershberg Robert | President and CEO, Director | Grant(A) | 382K | — | $0 |
| Feb 1, 2023 | Kohli Aditya | Chief Operating Officer, Director | Grant(A) | 85K | — | $0 |
| Feb 1, 2023 | Kohli Aditya | Chief Operating Officer, Director | Grant(A) | 128K | — | $0 |
| Feb 1, 2023 | Borkowski Astrid | Chief Medical Officer | Grant(A) | 51K | — | $0 |
| Feb 1, 2023 | Borkowski Astrid | Chief Medical Officer | Grant(A) | 77K | — | $0 |
| Nov 30, 2022 | Takeda Vaccines, Inc. | 10% Owner | Option exercise(X) | 5.9M | — | $0 |
| Nov 30, 2022 | Takeda Vaccines, Inc. | 10% Owner | Option exercise(X) | 5.9M | — | $0 |
| Aug 19, 2022 | Heron Patrick J | Director, 10% Owner | Grant(A) | 25K | — | $0 |
| Aug 19, 2022 | Sepulveda Jaime | Director | Grant(A) | 25K | — | $0 |
| Aug 19, 2022 | Chu Shelley | Director | Grant(A) | 25K | — | $0 |
| Aug 19, 2022 | Gerberding Julie L. | Director | Grant(A) | 25K | — | $0 |
| Aug 19, 2022 | Hilleman Jeryl L | Director | Grant(A) | 25K | — | $0 |
| Aug 19, 2022 | Silbermann Susan Michele | Director | Grant(A) | 25K | — | $0 |
| May 3, 2022 | Topper James N | 10% Owner | Conversion(C) | 2.7M | $13.60 | $37.2M |
| May 3, 2022 | Topper James N | 10% Owner | Buy(P) | 1.8M | $17.00 | $30.0M |
| May 3, 2022 | Topper James N | 10% Owner | Conversion(C) | 37.2M | — | — |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).