As of June 18, 2026, the three largest insider holders of ERAS are Jonathan E Lim (Chairman Ceo, 32.36Mn shares), Jonathan E Lim (Chairman Ceo, 18.40Mn shares), Venture Partners X, Llc Arch (TenPercentOwner, 11.06Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jonathan E Lim | Chairman Ceo | 0 | 32,355,576 | 06 Dec, 2023 |
| Ebun Garner | Chief Legal Officer | 25,076 | 0 | 03 Apr, 2026 |
| Alexander W. Casdin | - | 573,974 | 0 | 22 May, 2024 |
| Julie Hambleton | - | 6,000 | 0 | 20 Jul, 2021 |
| Pratik S Multani | - | 172,866 | 0 | 20 Jul, 2021 |
| Bihua Chen | - | 0 | 10,813,246 | 22 Jul, 2021 |
| Valerie Denise Harding Start | - | 0 | 20,000 | 07 Dec, 2023 |
| James Arthur Bristol | - | 0 | 20,000 | 22 Dec, 2022 |
| Venture Partners X, Llc Arch | - | 0 | 11,055,554 | 20 Jul, 2021 |
| David M. Chacko | Cfo And Cbo | 279,980 | 0 | 30 Jan, 2026 |
| Lin Wei | Chief Medical Officer | 315,812 | 0 | 02 Feb, 2023 |
* 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 | 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 | 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 |
| 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 | 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, 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 |
| 04 Mar, 2025 | Shannon Morris | Stock Option (right to buy) | D | 20,000 | $0.00 | 515,800 | D | M |
| 29 Jan, 2026 | Shannon Morris | Stock option (right to buy) | A | 625,000 | $0.00 | 625,000 | 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 | 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 |
| 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 |