SUTRO BIOPHARMA, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Shtylla Brunilda | Chief Business Officer | Sale | 15,428 | $4.71 | $72,666 | — | Aug 28, 2023 |
| Shtylla Brunilda | Chief Business Officer | Sale | 11,613 | $4.59 | $53,304 | 12,928 | Aug 25, 2023 |
| Chung Jane | Chief Commercial Officer | Tax Withholding | 6,483 | $4.22 | $27,358 | 31,698 | Aug 9, 2023 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Tax Withholding | 1,123 | $4.70 | $5,278 | 24,988 | Jul 12, 2023 |
| Petree Daniel H | — | Gift | 18,409 | — | — | 3,856 | Jun 27, 2023 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Option Exercise | 3,750 | — | — | 101,664 | Apr 14, 2023 |
| Shtylla Brunilda | Chief Business Officer | Option Exercise | 4,375 | — | — | 29,077 | Mar 3, 2023 |
| NEWELL WILLIAM J | CEO | Option Exercise | 18,750 | — | — | 182,062 | Mar 3, 2023 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Option Exercise | 5,500 | — | — | 27,851 | Mar 3, 2023 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Tax Withholding | 7,717 | $5.79 | $44,681 | 97,914 | Mar 3, 2023 |
| FITZPATRICK LINDA A | Chief People & Comm. Officer | Tax Withholding | 6,395 | $5.79 | $37,027 | 52,690 | Mar 3, 2023 |
| Chung Jane | Chief Commercial Officer | Tax Withholding | 3,211 | $5.79 | $18,592 | 19,431 | Mar 3, 2023 |
| Shabbir Anik | Chief Technical Ops. Officer | Option Exercise | 7,875 | — | — | 38,299 | Mar 3, 2023 |
| ALBINI EDWARD C | CFO and Secretary | Option Exercise | 9,125 | — | — | 85,531 | Mar 3, 2023 |
| ALBINI EDWARD C | CFO and Secretary | Option Exercise | 45,698 | $5.81 | $265,505 | 76,406 | Feb 13, 2023 |
| NEWELL WILLIAM J | CEO | Option Exercise | 13,750 | — | — | 137,787 | Jan 27, 2023 |
| FITZPATRICK LINDA A | Chief People & Comm. Officer | Tax Withholding | 3,364 | $7.50 | $25,230 | 41,210 | Jan 27, 2023 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Tax Withholding | 2,140 | $7.50 | $16,050 | 83,381 | Jan 27, 2023 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Tax Withholding | 1,019 | $7.50 | $7,643 | 15,601 | Jan 27, 2023 |
| Shabbir Anik | Chief Technical Ops. Officer | Tax Withholding | 1,835 | $7.50 | $13,763 | 30,424 | Jan 27, 2023 |
| ALBINI EDWARD C | CFO and Secretary | Tax Withholding | 2,140 | $7.50 | $16,050 | 30,708 | Jan 27, 2023 |
| Chung Jane | Chief Commercial Officer | Option Exercise | 18,750 | — | — | 21,250 | Aug 9, 2022 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Option Exercise | 3,250 | — | — | 15,243 | Jul 12, 2022 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Tax Withholding | 1,296 | $7.26 | $9,409 | 80,271 | Apr 14, 2022 |
| NEWELL WILLIAM J | CEO | Purchase | 10,000 | $7.75 | $77,500 | 116,525 | Mar 14, 2022 |
| FITZPATRICK LINDA A | Chief People & Comm. Officer | Option Exercise | 8,750 | — | — | 39,296 | Mar 5, 2022 |
| NEWELL WILLIAM J | CEO | Option Exercise | 18,750 | — | — | 119,943 | Mar 5, 2022 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Option Exercise | 5,500 | — | — | 14,246 | Mar 5, 2022 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Tax Withholding | 4,278 | $8.17 | $34,951 | 77,817 | Mar 5, 2022 |
| MOLINA ARTURO MD | Chief Medical Officer | Option Exercise | 12,500 | — | — | 42,091 | Mar 5, 2022 |
| Shabbir Anik | Chief Technical Ops. Officer | Tax Withholding | 3,200 | $8.17 | $26,144 | 27,759 | Mar 5, 2022 |
| ALBINI EDWARD C | CFO and Secretary | Option Exercise | 8,750 | — | — | 30,743 | Mar 5, 2022 |
| Petree Daniel H | — | Option Exercise | 4,545 | $4.36 | $19,816 | 12,533 | Feb 8, 2022 |
| FITZPATRICK LINDA A | Chief People & Comm. Officer | Option Exercise | 8,250 | — | — | 33,926 | Jan 29, 2022 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Option Exercise | 2,500 | — | — | 9,770 | Jan 29, 2022 |
| NEWELL WILLIAM J | CEO | Option Exercise | 13,750 | — | — | 106,471 | Jan 29, 2022 |
| MOLINA ARTURO MD | Chief Medical Officer | Option Exercise | 5,250 | — | — | 31,742 | Jan 29, 2022 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Tax Withholding | 2,151 | $10.39 | $22,349 | 69,595 | Jan 29, 2022 |
| Shabbir Anik | Chief Technical Ops. Officer | Tax Withholding | 1,844 | $10.39 | $19,159 | 22,209 | Jan 29, 2022 |
| ALBINI EDWARD C | CFO and Secretary | Option Exercise | 5,250 | — | — | 24,144 | Jan 29, 2022 |
| NEWELL WILLIAM J | CEO | Other | 26,091 | — | — | — | Dec 30, 2021 |
| Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Tax Withholding | 2,063 | $19.23 | $39,671 | 11,176 | Sep 28, 2021 |
| MOLINA ARTURO MD | Chief Medical Officer | Tax Withholding | 2,976 | $19.23 | $57,228 | 26,492 | Sep 24, 2021 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | Option Exercise | 11,019 | — | — | 70,306 | Sep 24, 2021 |
| FITZPATRICK LINDA A | Chief People & Comm. Officer | Option Exercise | 7,576 | — | — | 28,295 | Sep 24, 2021 |
| Shabbir Anik | Chief Technical Ops. Officer | Tax Withholding | 2,976 | $19.23 | $57,228 | 19,553 | Sep 24, 2021 |
| ALBINI EDWARD C | CFO and Secretary | Tax Withholding | 2,480 | $19.23 | $47,690 | 18,894 | Sep 24, 2021 |
| NEWELL WILLIAM J | CEO | Gift | 104,662 | — | — | 104,662 | Jul 1, 2021 |
| NEWELL WILLIAM J | CEO | Option Exercise | 13,750 | — | — | 192,410 | Jan 29, 2021 |
| MOLINA ARTURO MD | Chief Medical Officer | Option Exercise | 5,250 | — | — | 22,966 | Jan 29, 2021 |