As of April 17, 2026, the three largest insider holders of TNGX are Rock Ventures Iv, L.P. Third (TenPercentOwner, 13.39Mn shares), Capital, Llc Ecor1 (TenPercentOwner, 10.63Mn shares), Capital Management, Llc Boxer (Other, 6.69Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Rock Ventures Iv, L.P. Third | - | 13,386,574 | 0 | 27 Oct, 2025 |
| Capital, Llc Ecor1 | - | 0 | 10,630,736 | 08 Nov, 2024 |
| Capital Management, Llc Boxer | - | 6,690,642 | 0 | 28 Oct, 2024 |
| Capital Management, Llc Boxer | - | 0 | 3,610,642 | 07 Nov, 2024 |
| Barbara Weber | Director, Executive Chair | 1,629,254 | 0 | 04 Feb, 2026 |
| Investors, Llc Mva | - | 0 | 483,524 | 03 May, 2024 |
| Malte Peters | President Ceo | 367,500 | 0 | 12 Jan, 2026 |
| Daniella Beckman | Chief Financial Officer | 184,297 | 0 | 04 Feb, 2026 |
| Alan Huang | Chief Scientific Officer | 167,584 | 0 | 02 Mar, 2023 |
| Adam Crystal | President, Rd | 112,622 | 0 | 02 Apr, 2026 |
| Investors, Llc Mva | - | 108,793 | 0 | 02 Jul, 2024 |
| Douglas Barry | General Counsel | 66,014 | 0 | 06 Feb, 2025 |
| Mace Rothenberg | - | 37,500 | 0 | 09 Jun, 2025 |
| John B Ketchum | - | 20,937 | 0 | 09 Jun, 2025 |
| Alexis Borisy | - | 17,500 | 0 | 09 Jun, 2025 |
| Lesley Ann Calhoun | - | 12,500 | 0 | 09 Jun, 2025 |
| Sung Lee | - | 10,000 | 0 | 06 Jan, 2026 |
| Reid M Huber | - | 5,000 | 0 | 08 Jun, 2023 |
| Aaron I. Davis | - | 5,000 | 0 | 08 Jun, 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 | Adam Crystal | Common Stock | A | 27,000 | $5.20 | 139,622 | D | M |
| 01 Apr, 2026 | Adam Crystal | Common Stock | D | 27,000 | $21.20 | 112,622 | D | S |
| 01 Apr, 2026 | Adam Crystal | Stock Option (Right to Buy) | D | 27,000 | $0.00 | 433,500 | D | M |
| 25 Mar, 2026 | Adam Crystal | Common Stock | A | 12,000 | $5.20 | 124,622 | D | M |
| 25 Mar, 2026 | Adam Crystal | Common Stock | D | 12,000 | $20.11 | 112,622 | D | S |
| 25 Mar, 2026 | Adam Crystal | Stock Option (Right to Buy) | D | 12,000 | $0.00 | 460,500 | D | M |
| 05 Mar, 2026 | Adam Crystal | Common Stock | D | 20,251 | $15.00 | 112,622 | D | S |
| 25 Feb, 2026 | Adam Crystal | Common Stock | D | 54,345 | $12.77 | 132,873 | D | S |
| 02 Feb, 2026 | Adam Crystal | Common Stock | A | 47,460 | $0.00 | 205,670 | D | A |
| 02 Feb, 2026 | Barbara Weber | Common Stock | A | 37,522 | $0.00 | 1,659,773 | D | A |
| 02 Feb, 2026 | Daniella Beckman | Common Stock | A | 44,330 | $0.00 | 194,614 | D | A |
| 03 Feb, 2026 | Barbara Weber | Common Stock | D | 30,186 | $12.26 | 1,629,587 | D | S |
| 03 Feb, 2026 | Adam Crystal | Common Stock | D | 18,251 | $12.26 | 187,419 | D | S |
| 03 Feb, 2026 | Daniella Beckman | Common Stock | D | 10,204 | $12.26 | 184,410 | D | S |
| 03 Feb, 2026 | Adam Crystal | Common Stock | D | 201 | $12.90 | 187,218 | D | S |
| 03 Feb, 2026 | Daniella Beckman | Common Stock | D | 113 | $12.90 | 184,297 | D | S |
| 03 Feb, 2026 | Barbara Weber | Common Stock | D | 333 | $12.90 | 1,629,254 | D | S |
| 02 Feb, 2026 | Barbara Weber | Stock Option (Right to Buy) | A | 222,132 | $0.00 | 222,132 | D | A |
| 02 Feb, 2026 | Daniella Beckman | Stock Option (Right to Buy) | A | 265,980 | $0.00 | 265,980 | D | A |
| 02 Feb, 2026 | Adam Crystal | Stock Option (Right to Buy) | A | 284,760 | $0.00 | 284,760 | D | A |