InsiderFlow

STRO

Sutro Biopharma, Inc.$34.52+0.93 (+2.77%)
Prev Close$33.59·MCap$212.7M·P/E·Vol158.0K·Yield

Buys (12M)

5

$89.6K

Sells (12M)

8

$87.5K

Net Activity

Net Buyer

$2.0K

Active Insiders

12

last 12 mo

Over the past 12 months, insider activity at Sutro Biopharma, Inc. (STRO) has been mixed between buying and selling, with 5 insider purchases totaling $89.6K and 8 insider sales totaling $87.5K. The most recent insider transaction was by Chung Jane (Chief Executive Officer), who sold $7.2K worth of shares on Dec 12, 2025. Sutro Biopharma, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $212.7M.

STRO Insider Trading Activity

DateInsiderTypeValue
Dec 12, 2025 Chung JaneSell$7.2K
Oct 15, 2025 Chow Gregory K.Buy$16.0K
Oct 15, 2025 Chung JaneBuy$10.0K
Oct 15, 2025 Gerber Hans-PeterBuy$13.6K
Oct 15, 2025 MATSUI CONNIEBuy$40.0K0.6% OS
Oct 15, 2025 Pauling DavidBuy$10.0K
Sep 18, 2025 Gerber Hans-PeterSell$12.1K
Aug 9, 2025 Chung JaneSell$5.4K
Jul 8, 2025 Leyman BarbaraSell$7.0K
May 15, 2025 ALBINI EDWARD CSell$14.1K
May 1, 2025 Borgman Anne ElizabethSell$26.4K
May 1, 2025 FITZPATRICK LINDA ASell$14.5K
May 1, 2025 Srinivasan VenkateshSell$956.58
Apr 11, 2025 Srinivasan VenkateshSell$4.6K
Mar 5, 2025 FITZPATRICK LINDA ASell$4.9K
Mar 5, 2025 NEWELL WILLIAM JSell$9.1K
Mar 4, 2025 ALBINI EDWARD CSell$5.3K
Mar 4, 2025 Chung JaneSell$3.3K
Mar 4, 2025 NEWELL WILLIAM JSell$15.8K
Mar 1, 2025 ALBINI EDWARD CSell$16.4K
Mar 1, 2025 Chung JaneSell$15.0K
Mar 1, 2025 FITZPATRICK LINDA ASell$13.2K
Mar 1, 2025 Gerber Hans-PeterSell$7.3K
Mar 1, 2025 NEWELL WILLIAM JSell$40.1K
Mar 1, 2025 Srinivasan VenkateshSell$7.4K
Feb 28, 2025 Borgman Anne ElizabethSell$24.5K
Jan 31, 2024 Vasquez NickiSell$60.9K
Aug 29, 2023 Shtylla BrunildaSell$72.6K
Aug 28, 2023 Shtylla BrunildaSell$53.3K
Mar 15, 2022 NEWELL WILLIAM JBuy$77.5K
Sep 28, 2021 Vasquez NickiSell$72.7K

STRO Insider Buying Activity

The following table shows recent insider purchases of Sutro Biopharma, Inc. (STRO) stock reported via SEC Form 4 filings.

DateInsiderTypeValue
Oct 15, 2025 Chow Gregory K.Buy$16.0K
Oct 15, 2025 Chung JaneBuy$10.0K
Oct 15, 2025 Gerber Hans-PeterBuy$13.6K
Oct 15, 2025 MATSUI CONNIEBuy$40.0K0.6% OS
Oct 15, 2025 Pauling DavidBuy$10.0K
Mar 15, 2022 NEWELL WILLIAM JBuy$77.5K

STRO Insider Selling Activity

The following table shows recent insider sales of Sutro Biopharma, Inc. (STRO) stock reported via SEC Form 4 filings.

DateInsiderTypeValue
Dec 12, 2025 Chung JaneSell$7.2K
Sep 18, 2025 Gerber Hans-PeterSell$12.1K
Aug 9, 2025 Chung JaneSell$5.4K
Jul 8, 2025 Leyman BarbaraSell$7.0K
May 15, 2025 ALBINI EDWARD CSell$14.1K
May 1, 2025 Borgman Anne ElizabethSell$26.4K
May 1, 2025 FITZPATRICK LINDA ASell$14.5K
May 1, 2025 Srinivasan VenkateshSell$956.58
Apr 11, 2025 Srinivasan VenkateshSell$4.6K
Mar 5, 2025 FITZPATRICK LINDA ASell$4.9K
Mar 5, 2025 NEWELL WILLIAM JSell$9.1K
Mar 4, 2025 ALBINI EDWARD CSell$5.3K
Mar 4, 2025 Chung JaneSell$3.3K
Mar 4, 2025 NEWELL WILLIAM JSell$15.8K
Mar 1, 2025 ALBINI EDWARD CSell$16.4K
Mar 1, 2025 Chung JaneSell$15.0K
Mar 1, 2025 FITZPATRICK LINDA ASell$13.2K
Mar 1, 2025 Gerber Hans-PeterSell$7.3K
Mar 1, 2025 NEWELL WILLIAM JSell$40.1K
Mar 1, 2025 Srinivasan VenkateshSell$7.4K
Feb 28, 2025 Borgman Anne ElizabethSell$24.5K
Jan 31, 2024 Vasquez NickiSell$60.9K
Aug 29, 2023 Shtylla BrunildaSell$72.6K
Aug 28, 2023 Shtylla BrunildaSell$53.3K
Sep 28, 2021 Vasquez NickiSell$72.7K

STRO Insiders

Chung Jane

PRESIDENT AND COO

Bought $10.0KSold $30.9K
5 tradesLast: Dec 12, 2025
Chow Gregory K.

CFO

Bought $16.0K
1 tradesLast: Oct 15, 2025
Pauling David

Chief Admin. Ofcr. & GC

Bought $10.0K
1 tradesLast: Oct 15, 2025
Gerber Hans-Peter

CHIEF SCIENTIFIC OFFICER

Bought $13.6KSold $19.4K
3 tradesLast: Oct 15, 2025
MATSUI CONNIE

Director

Bought $40.0K
1 tradesLast: Oct 15, 2025
Leyman Barbara

Chief Business Officer

Sold $7.0K
1 tradesLast: Jul 8, 2025
ALBINI EDWARD C

CFO AND SECRETARY

Sold $35.8K
3 tradesLast: May 15, 2025
FITZPATRICK LINDA A

CHIEF PEOPLE & COMM. OFFICER

Sold $32.6K
3 tradesLast: May 1, 2025
Srinivasan Venkatesh

CHIEF TECH OP OFFICER

Sold $12.9K
3 tradesLast: May 1, 2025
Borgman Anne Elizabeth

CHIEF MEDICAL OFFICER

Sold $50.9K
2 tradesLast: May 1, 2025
NEWELL WILLIAM J

CEO

Bought $77.5KSold $65.0K
4 tradesLast: Mar 5, 2025
Vasquez Nicki

CHIEF PORT. STRAT & ALNCE OFCR

Sold $133.6K
2 tradesLast: Jan 31, 2024
Shtylla Brunilda

Chief Business Officer

Sold $125.9K
2 tradesLast: Aug 29, 2023