As of May 14, 2026, the three largest insider holders of ERAS are Jonathan E Lim (Chairman Ceo, 19.46Mn shares), Jonathan E Lim (Chairman Ceo, 18.40Mn shares), Jonathan E Lim (Chairman Ceo, 12.90Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jonathan E Lim | Chairman Ceo | 0 | 19,456,216 | 09 Oct, 2023 |
| Jonathan E Lim | Chairman Ceo | 0 | 18,396,216 | 08 Jun, 2023 |
| Jonathan E Lim | Chairman Ceo | 0 | 12,899,360 | 06 Dec, 2023 |
| Venture Partners X, Llc Arch | - | 0 | 11,055,554 | 20 Jul, 2021 |
| Venture Partners X, Llc Arch | - | 0 | 11,055,554 | 20 Jul, 2021 |
| Bihua Chen | - | 0 | 10,813,246 | 22 Jul, 2021 |
| Alexander W. Casdin | - | 573,974 | 0 | 22 May, 2024 |
| Lin Wei | Chief Medical Officer | 315,812 | 0 | 02 Feb, 2023 |
| David M. Chacko | Cfo And Cbo | 279,980 | 0 | 30 Jan, 2026 |
| Pratik S Multani | - | 172,866 | 0 | 20 Jul, 2021 |
| Pratik S Multani | - | 166,666 | 6,200 | 03 Jun, 2025 |
| Ebun Garner | Chief Legal Officer | 25,076 | 0 | 03 Apr, 2026 |
| James Arthur Bristol | - | 0 | 20,000 | 22 Dec, 2022 |
| Valerie Denise Harding Start | - | 0 | 20,000 | 07 Dec, 2023 |
| Julie Hambleton | - | 6,000 | 0 | 20 Jul, 2021 |
| Valerie Denise Harding Start | - | 2,000 | 0 | 20 Jul, 2021 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Ebun Garner | Common Stock | A | 80,000 | $1.70 | 105,076 | D | M |
| 01 Apr, 2026 | Ebun Garner | Common Stock | D | 80,000 | $16.40 | 25,076 | D | S |
| 01 Apr, 2026 | Ebun Garner | Stock Option (right to buy) | D | 80,000 | $0.00 | 280,000 | D | M |
| 04 Mar, 2026 | Shannon Morris | Common Stock | A | 20,000 | $1.70 | 20,000 | D | M |
| 04 Mar, 2026 | Shannon Morris | Common Stock | D | 20,000 | $15.04 | 0 | D | S |
| 04 Mar, 2025 | Shannon Morris | Stock Option (right to buy) | D | 20,000 | $0.00 | 515,800 | D | M |
| 29 Jan, 2026 | Jonathan E Lim | Stock option (right to buy) | A | 2,000,000 | $0.00 | 2,000,000 | D | A |
| 29 Jan, 2026 | Shannon Morris | Stock option (right to buy) | A | 625,000 | $0.00 | 625,000 | D | A |
| 29 Jan, 2026 | Ebun Garner | Stock option (right to buy) | A | 560,000 | $0.00 | 560,000 | D | A |
| 29 Jan, 2026 | Michael David Varney | Stock option (right to buy) | A | 96,000 | $0.00 | 96,000 | D | A |
| 15 Dec, 2025 | David M. Chacko | Common Stock | A | 17,793 | $1.19 | 279,980 | D | J |
| 29 Jan, 2026 | David M. Chacko | Stock option (right to buy) | A | 640,000 | $0.00 | 640,000 | D | A |
| 15 Dec, 2025 | Ebun Garner | Common Stock | A | 3,902 | $1.19 | 25,076 | D | A |
| 07 Jan, 2026 | Ebun Garner | Common Stock | A | 120,000 | $1.70 | 145,076 | D | M |
| 07 Jan, 2026 | Ebun Garner | Common Stock | D | 120,000 | $5.59 | 25,076 | D | S |
| 07 Jan, 2025 | Ebun Garner | Stock Option (right to buy) | D | 120,000 | $0.00 | 360,000 | D | M |
| 01 Jan, 2026 | Alexander W. Casdin | Stock Option (right to buy) | A | 23,872 | $0.00 | 23,872 | D | A |
| 01 Jan, 2026 | James Arthur Bristol | Stock Option (right to buy) | A | 37,762 | $0.00 | 37,762 | D | A |
| 01 Jan, 2026 | Jean I Liu | Stock Option (right to buy) | A | 20,617 | $0.00 | 20,617 | D | A |
| 01 Jan, 2026 | Valerie Denise Harding Start | Stock Option (right to buy) | A | 24,306 | $0.00 | 24,306 | D | A |