ESPR's three largest insider shareholders as of March 23, 2026 are Sheldon L. Koenig (President And Ceo, 1.47Mn shares), Benjamin Halladay (Chief Financial Officer, 467.52K shares), John B. Jr. Harlow (Chief Commercial Officer, 424.54K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Sheldon L. Koenig | President And Ceo | 2,172,699 | 0 | 18 Mar, 2026 |
| Benjamin Halladay | Chief Financial Officer | 713,602 | 0 | 18 Mar, 2026 |
| Benjamin Looker | Chief Legal Officer | 679,348 | 0 | 18 Mar, 2026 |
| John B. Jr. Harlow | Chief Commercial Officer | 424,536 | 0 | 08 Dec, 2025 |
| Eric Warren | Chief Commercial Officer | 370,218 | 0 | 21 Apr, 2025 |
| Joanne M. Foody | Chief Medical Officer | 272,862 | 0 | 18 Jul, 2024 |
| Jay Shepard | 84,599 | 0 | 02 Jun, 2025 | |
| Stephen Rocamboli | 69,261 | 0 | 02 Jun, 2025 | |
| Seth H. Z. Fischer | 61,150 | 0 | 02 Jun, 2025 | |
| Alan Fuhrman | 53,404 | 0 | 23 May, 2024 | |
| Antonio M Jr Md D Phil Gotto | 51,599 | 0 | 23 May, 2024 | |
| Nicole Vitullo | 36,918 | 0 | 16 Jun, 2023 | |
| Tracy M Woody | 33,566 | 0 | 16 Jun, 2023 | |
| Mark E Mcgovern | 28,449 | 0 | 28 May, 2021 | |
| Daniel Janney | 23,449 | 0 | 28 May, 2021 | |
| Robert E. Hoffman | 5,280 | 0 | 02 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Mar, 2026 | Sheldon L. Koenig | Common Stock | D | 25,578 | $2.72 | 2,172,699 | D | S |
| 17 Mar, 2026 | Benjamin Halladay | Common Stock | D | 6,424 | $2.71 | 713,602 | D | S |
| 17 Mar, 2026 | Benjamin Looker | Common Stock | D | 5,708 | $2.70 | 679,348 | D | S |
| 13 Mar, 2026 | Benjamin Halladay | Common Stock | A | 247,430 | $0.00 | 720,026 | D | A |
| 13 Mar, 2026 | Benjamin Looker | Common Stock | A | 300,840 | $0.00 | 685,056 | D | A |
| 13 Mar, 2026 | Sheldon L. Koenig | Common Stock | A | 723,760 | $0.00 | 2,198,277 | D | A |
| 13 Mar, 2026 | Benjamin Halladay | Stock Option (right to buy) | A | 221,270 | $0.00 | 221,270 | D | A |
| 13 Mar, 2026 | Benjamin Looker | Stock Option (right to buy) | A | 269,230 | $0.00 | 269,230 | D | A |
| 13 Mar, 2026 | Sheldon L. Koenig | Stock Option (right to buy) | A | 647,460 | $0.00 | 647,460 | D | A |
| 20 Jan, 2026 | Benjamin Looker | Common Stock | D | 1,689 | $2.88 | 384,216 | D | S |
| 17 Dec, 2025 | Benjamin Halladay | Common Stock | D | 7,337 | $3.67 | 467,525 | D | S |
| 17 Dec, 2025 | Benjamin Looker | Common Stock | D | 6,517 | $3.67 | 385,905 | D | S |
| 17 Dec, 2025 | Sheldon L. Koenig | Common Stock | D | 48,244 | $3.67 | 1,470,587 | D | S |
| 04 Dec, 2025 | John B. Jr. Harlow | Common Stock | A | 424,536 | $0.00 | 424,536 | D | A |
| 04 Dec, 2025 | John B. Jr. Harlow | Stock Option (right to buy) | A | 380,000 | $0.00 | 380,000 | D | A |
| 17 Oct, 2025 | Benjamin Looker | Common Stock | D | 1,248 | $2.62 | 392,422 | D | S |
| 17 Sep, 2025 | Sheldon L. Koenig | Common Stock | D | 28,427 | $2.79 | 1,518,831 | D | S |
| 17 Sep, 2025 | Benjamin Looker | Common Stock | D | 6,267 | $2.80 | 393,670 | D | S |
| 17 Sep, 2025 | Benjamin Halladay | Common Stock | D | 7,046 | $2.81 | 474,862 | D | S |
| 17 Jul, 2025 | Benjamin Halladay | Common Stock | D | 11 | $1.12 | 474,462 | D | S |