List of insiders holdings for SUTRO BIOPHARMA INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Ross Michael Jay Director 10% Owner | 2018-10-01 17:26:54 | 0 6,059,341 | 6,059,341 | Form 4 |
| 2 | Merck & Co. Inc. Merck Sharp & Dohme Corp. 10% Owner | 2018-10-04 16:48:53 | 2,723,509 0 | 2,723,509 | Form 13G |
| 3 | Skyline Venture Partners V LP Skyline Venture Management V LLC KANEKO YASUNORI 10% Owner | 2020-02-12 14:28:20 | 1,960,053 0 | 1,960,053 | Form 13G |
| 4 | CELGENE CORP 10% Owner | 2020-02-10 17:26:57 | 1,726,197 0 | 1,726,197 | Form 13G |
| 5 | SVLSF V LLC ILSF III LLC INTERNATIONAL LIFE SCIENCES FUND III (GP) L.P. INTERNATIONAL LIFE SCIENCES FUND III STRATEGIC PARTNERS L.P. INTERNATIONAL LIFE SCIENCES FUND III CO-INVESTMENT L.P. INTERNATIONAL LIFE SCIENCES FUND III (LP1) L.P. SV Life Sciences Fund V (GP) LP SV LIFE SCIENCES FUND V LP SV Life Sciences Fund V Strategic Partners L.P. 10% Owner | 2018-10-09 16:18:07 | 942,789 0 | 942,789 | Form 13D |
| 6 | NEWELL WILLIAM J CEO | 2025-03-07 16:14:26 | 292,531 116,525 | 409,056 | Form 4 |
| 7 | ALBINI EDWARD C CFO AND SECRETARY | 2025-05-19 16:11:42 | 192,711 0 | 192,711 | Form 4 |
| 8 | MOLINA ARTURO MD Chief Medical Officer | 2022-03-07 19:20:36 | 166,236 0 | 166,236 | Form 4 |
| 9 | FITZPATRICK LINDA A CHIEF PEOPLE & COMM. OFFICER | 2025-05-05 17:48:20 | 144,970 10,383 | 155,353 | Form 4 |
| 10 | Borgman Anne Elizabeth CHIEF MEDICAL OFFICER | 2025-05-05 17:45:10 | 137,139 0 | 137,139 | Form 4 |
| 11 | Shabbir Anik Chief Technical Ops. Officer | 2023-03-07 16:24:38 | 121,952 0 | 121,952 | Form 4 |
| 12 | Hallam Trevor Pres. Rsrch & Cf. Sctific Ofcr | 2023-04-17 18:53:51 | 107,868 0 | 107,868 | Form 4 |
| 13 | Leyman Barbara Chief Business Officer | 2025-08-26 21:21:26 | 91,056 0 | 91,056 | Form 4 |
| 14 | Srinivasan Venkatesh CHIEF TECH OP OFFICER | 2025-05-05 17:46:19 | 58,686 0 | 58,686 | Form 4 |
| 15 | Freund John Gordon Director | 2024-06-10 16:21:11 | 35,000 0 | 35,000 | Form 4 |
| 16 | Worsley Stephen Chief Business Officer | 2019-01-31 17:11:58 | 30,000 0 | 30,000 | Form 4 |
| 17 | LAWLIS V BRYAN Director | 2018-09-27 18:00:18 | 26,033 0 | 26,033 | Form 4 |
| 18 | Chung Jane Chief Executive Officer | 2025-12-16 20:47:26 | 18,891 0 | 18,891 | Form 4 |
| 19 | Sharp Shalini Director | 2022-06-08 19:10:03 | 18,500 0 | 18,500 | Form 4 |
| 20 | Vasquez Nicki CHIEF PORT. STRAT & ALNCE OFCR | 2024-01-31 16:23:31 | 14,279 0 | 14,279 | Form 4 |
| 21 | JANNEY DANIEL Director | 2019-06-19 17:51:09 | 11,610 0 | 11,610 | Form 4 |
| 22 | Chow Gregory K. CFO | 2025-12-29 16:47:42 | 8,200 0 | 8,200 | Form 4 |
| 23 | Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | 2025-12-29 16:49:28 | 7,925 0 | 7,925 | Form 4 |
| 24 | Pauling David Chief Admin. Ofcr. & GC | 2025-12-29 16:51:17 | 7,200 0 | 7,200 | Form 4 |
| 25 | Wigginton Jon Marc Director | 2025-12-29 17:05:53 | 1,500 0 | 1,500 | Form 4 |
| 26 | Petree Daniel H Director | 2025-12-29 17:05:06 | 1,500 0 | 1,500 | Form 4 |
| 27 | PANEK JAMES P Director | 2025-12-29 17:04:22 | 1,500 0 | 1,500 | Form 4 |
| 28 | MATSUI CONNIE Director | 2025-12-29 17:03:16 | 1,500 0 | 1,500 | Form 4 |
| 29 | Lobacki Joseph M Director | 2025-12-29 17:00:19 | 1,500 0 | 1,500 | Form 4 |
| 30 | Jagpal Sukhi Director | 2025-12-29 16:58:48 | 1,500 0 | 1,500 | Form 4 |
| 31 | Hunter Heidi Director | 2025-12-29 16:57:47 | 1,500 0 | 1,500 | Form 4 |
| 32 | Dybbs Michael Director | 2025-12-29 16:54:49 | 1,500 0 | 1,500 | Form 4 |
| 33 | Shtylla Brunilda Chief Business Officer | 2023-08-29 16:40:06 | 0 0 | 0 | Form 4 |
| 34 | Alta Partners VIII L.P. Alta Partners Management VIII LLC CHAMPSI FARAH JANNEY DANIEL NOHRA GUY P 10% Owner | 2021-02-16 08:57:20 | 0 0 | 0 | Form 13G |