There have been 50 recent insider transactions recorded for Sutro Biopharma, Inc. (STRO), including 32 buys and 15 sells. Total insider buying was valued at $796.23K and total insider selling at $76.16K.
Notable insiders with recent activity include Chung Jane, Pauling David, Chow Gregory K.. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — STRO
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-04 |
Chung Jane |
Chief Executive Officer |
Option Exercise (Sell) |
788 |
- |
- |
- |
| 2026-03-04 |
Pauling David |
Chief Admin. Ofcr. & Gc |
Option Exercise (Sell) |
675 |
- |
- |
- |
| 2026-03-02 |
Chow Gregory K. |
CFO |
RSU Award |
5,000 |
- |
- |
5,000 |
| 2026-03-02 |
Chung Jane |
Chief Executive Officer |
Tax Withholding of RSU |
2,779 |
$20.55 |
$57.11K |
20,779 |
| 2026-03-02 |
Gerber Hans-peter |
Chief Scientific Officer |
RSU Award |
5,000 |
- |
- |
5,000 |
| 2026-03-02 |
Pauling David |
Chief Admin. Ofcr. & Gc |
RSU Award |
4,200 |
- |
- |
4,200 |
| 2026-03-01 |
Chung Jane |
Chief Executive Officer |
Option Exercise (Sell) |
688 |
- |
- |
688 |
| 2026-03-01 |
Gerber Hans-peter |
Chief Scientific Officer |
Option Exercise (Sell) |
1,125 |
- |
- |
2,250 |
| 2026-03-01 |
Pauling David |
Chief Admin. Ofcr. & Gc |
Option Exercise (Sell) |
500 |
- |
- |
500 |
| 2025-12-23 |
Panek James P |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Matsui Connie |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Petree Daniel H |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Lobacki Joseph M |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Jagpal Sukhi |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Wigginton Jon Marc |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Dybbs Michael |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Chow Gregory K. |
CFO |
RSU Award |
8,200 |
$10.38 |
$85.12K |
8,200 |
| 2025-12-23 |
Hunter Heidi |
Director |
RSU Award |
1,500 |
$10.38 |
$15.57K |
1,500 |
| 2025-12-23 |
Gerber Hans-peter |
Chief Scientific Officer |
RSU Award |
7,925 |
$10.38 |
$82.26K |
7,925 |
| 2025-12-23 |
Pauling David |
Chief Admin. Ofcr. & Gc |
RSU Award |
7,200 |
$10.38 |
$74.74K |
7,200 |
| 2025-12-12 |
Chung Jane |
Chief Executive Officer |
Option Exercise (Sell) |
2,500 |
- |
- |
5,000 |
| 2025-10-15 |
Matsui Connie |
Director |
Informative Buy |
50,000 |
$0.80 |
$39.95K |
50,000 |
| 2025-10-15 |
Chow Gregory K. |
CFO |
Informative Buy |
19,750 |
$0.81 |
$16K |
19,750 |
| 2025-10-15 |
Chung Jane |
Chief Executive Officer |
Informative Buy |
12,500 |
$0.80 |
$10.01K |
122,850 |
| 2025-10-15 |
Gerber Hans-peter |
Chief Scientific Officer |
Informative Buy |
17,000 |
$0.80 |
$13.61K |
71,832 |
| 2025-10-15 |
Pauling David |
Chief Admin. Ofcr. & Gc |
Informative Buy |
12,504 |
$0.80 |
$9.99K |
71,737 |
| 2025-09-18 |
Gerber Hans-peter |
Chief Scientific Officer |
Tax Withholding of RSU |
13,417 |
$0.90 |
$12.08K |
54,832 |
| 2025-08-09 |
Chung Jane |
Chief Executive Officer |
Option Exercise (Sell) |
18,750 |
- |
- |
- |
| 2025-07-08 |
Leyman Barbara |
Chief Business Officer |
Tax Withholding of RSU |
8,944 |
$0.78 |
$6.98K |
16,056 |
| 2025-06-06 |
Panek James P |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Matsui Connie |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Petree Daniel H |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Lobacki Joseph M |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Jagpal Sukhi |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Wigginton Jon Marc |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Dybbs Michael |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-06 |
Hunter Heidi |
Director |
RSU Award |
50,000 |
$0.85 |
$42.5K |
50,000 |
| 2025-06-02 |
Chow Gregory K. |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-06-02 |
Chow Gregory K. |
CFO |
RSU Award |
100,000 |
- |
- |
100,000 |
| 2025-05-15 |
Albini Edward C |
CFO and Secretary |
Option Exercise (Sell) |
9,125 |
- |
- |
- |
| 2025-05-01 |
Fitzpatrick Linda A |
Chief People & Comm. Officer |
Option Exercise (Sell) |
9,125 |
- |
- |
- |
| 2025-05-01 |
Borgman Anne Elizabeth |
Chief Medical Officer |
Option Exercise (Sell) |
15,938 |
- |
- |
17,812 |
| 2025-05-01 |
Srinivasan Venkatesh |
Chief Tech Op Officer |
Option Exercise (Sell) |
2,500 |
- |
- |
5,000 |
| 2025-04-11 |
Srinivasan Venkatesh |
Chief Tech Op Officer |
Option Exercise (Sell) |
21,250 |
- |
- |
21,250 |
| 2025-04-04 |
Pauling David |
Chief Admin. Ofcr. & Gc |
Unknown |
- |
- |
- |
56,733 |
| 2025-04-04 |
Chung Jane |
Chief Executive Officer |
RSU Award |
310,000 |
- |
- |
310,000 |
| 2025-04-04 |
Srinivasan Venkatesh |
Chief Tech Op Officer |
RSU Award |
94,250 |
- |
- |
94,250 |
| 2025-04-04 |
Gerber Hans-peter |
Chief Scientific Officer |
RSU Award |
113,750 |
- |
- |
113,750 |
| 2025-04-04 |
Leyman Barbara |
Chief Business Dev. Officer |
RSU Award |
84,500 |
- |
- |
84,500 |
| 2025-04-04 |
Pauling David |
Chief Admin. Ofcr. & Gc |
Unknown |
25,275 |
- |
- |
- |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
