According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Sutro Biopharma are Ceo William J Newell (40.91K shares), Cfo And Secretary Edward C Albini (16.08K shares), Chief Executive Officer Jane Chung (13.89K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| William J Newell | Ceo | 40,906 | 07 Mar, 2025 |
| Edward C Albini | Cfo And Secretary | 16,081 | 19 May, 2025 |
| Linda A Fitzpatrick | Chief People & Comm. Officer | 11,974 | 05 May, 2025 |
| Trevor Hallam | Pres. Rsrch & Cf. Sctific Ofcr | 10,037 | 17 Apr, 2023 |
| Anne Elizabeth Borgman | Chief Medical Officer | 9,745 | 05 May, 2025 |
| Hans-Peter Gerber | Chief Scientific Officer | 7,183 | 16 Oct, 2025 |
| David Pauling | Chief Admin. Ofcr. & Gc | 7,174 | 16 Oct, 2025 |
| Venkatesh Srinivasan | Chief Tech Op Officer | 5,369 | 05 May, 2025 |
| Connie Matsui | 5,000 | 16 Oct, 2025 | |
| Anik Shabbir | Chief Technical Ops. Officer | 4,083 | 07 Mar, 2023 |
| Arturo Md Molina | Chief Medical Officer | 3,774 | 07 Mar, 2022 |
| Daniel H Petree | 2,246 | 29 Jun, 2023 | |
| Gregory K. Chow | Cfo | 1,975 | 16 Oct, 2025 |
| Barbara Leyman | Chief Business Officer | 1,606 | 26 Aug, 2025 |
| Nicki Vasquez | Chief Port. Strat & Alnce Ofcr | 1,428 | 31 Jan, 2024 |
| Jane Chung | Chief Executive Officer | 13,891 | 16 Dec, 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 |
|---|---|---|---|---|---|---|---|---|
| 12 Dec, 2025 | Jane Chung | Common Stock | A | 2,500 | $0.00 | 14,785 | D | M |
| 12 Dec, 2025 | Jane Chung | Common Stock | D | 894 | $8.02 | 13,891 | D | F |
| 15 Oct, 2025 | Connie Matsui | Common Stock | A | 50,000 | $0.80 | 5,000 | D | P |
| 15 Oct, 2025 | Gregory K. Chow | Common Stock | A | 19,750 | $0.81 | 1,975 | D | P |
| 15 Oct, 2025 | Jane Chung | Common Stock | A | 12,500 | $0.80 | 12,285 | D | P |
| 15 Oct, 2025 | Hans-Peter Gerber | Common Stock | A | 17,000 | $0.80 | 7,183 | D | P |
| 15 Oct, 2025 | David Pauling | Common Stock | A | 12,504 | $0.80 | 7,174 | D | P |
| 18 Sep, 2025 | Hans-Peter Gerber | Common Stock | D | 13,417 | $0.90 | 5,483 | D | F |
| 18 Sep, 2025 | Hans-Peter Gerber | Common Stock | A | 37,500 | $0.00 | 6,825 | D | M |
| 09 Aug, 2025 | Jane Chung | Common Stock | D | 6,708 | $0.80 | 11,035 | D | F |
| 09 Aug, 2025 | Jane Chung | Common Stock | A | 18,750 | $0.00 | 11,706 | D | M |
| 08 Jul, 2025 | Barbara Leyman | - | - | 2,500 | D | |||
| 08 Jul, 2025 | Barbara Leyman | Common Stock | D | 8,944 | $0.78 | 1,606 | D | F |
| 08 Jul, 2025 | Barbara Leyman | - | - | 1,606 | D | |||
| 08 Jul, 2025 | Barbara Leyman | Common Stock | A | 25,000 | $0.00 | 2,500 | D | M |
| 15 May, 2025 | Edward C Albini | - | - | 17,680 | D | |||
| 15 May, 2025 | Edward C Albini | Common Stock | A | 11,156 | $0.00 | 16,768 | D | M |
| 15 May, 2025 | Edward C Albini | - | - | 16,768 | D | |||
| 15 May, 2025 | Edward C Albini | - | - | 15,652 | D | |||
| 15 May, 2025 | Edward C Albini | Common Stock | A | 24,438 | $0.00 | 15,652 | D | M |