STRO

Healthcare

Sutro Biopharma, Inc.

$23.38-1.07 (-4.40%)

Prev Close

$24.45

Open

$23.61

High

$24.99

Low

$22.75

Volume

81.2K

Market Cap

$212.7M

P/E

—

Div Yield

—

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 9 insider sales totaling $92.1K. 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.

Buys (12M)

$89.6K

Sells (12M)

$92.1K

Net Activity

Net Seller

$2.5K

Active Insiders

last 12 mo

STRO Price Chart

STRO Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value
Dec 12, 2025↗	Chung Jane	Chief Executive Officer	Sell	894	$8.02	$7.2K
Oct 15, 2025↗	Chow Gregory K.	CFO	Buy	19,750	$0.81	$16.0K
Oct 15, 2025↗	Chung Jane	Chief Executive Officer	Buy	12,500	$0.80	$10.0K
Oct 15, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Buy	17,000	$0.80	$13.6K
Oct 15, 2025↗	MATSUI CONNIE	Director	Buy	50,000	$0.80	$40.0K
Oct 15, 2025↗	Pauling David	Chief Admin. Ofcr. & GC	Buy	12,504	$0.80	$10.0K
Sep 18, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Sell	13,417	$0.90	$12.1K
Aug 9, 2025↗	Chung Jane	Chief Executive Officer	Sell	6,708	$0.80	$5.4K
Jul 8, 2025↗	Leyman Barbara	Chief Business Officer	Sell	8,944	$0.78	$7.0K
May 15, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	15,995	$0.88	$14.1K
May 1, 2025↗	Borgman Anne Elizabeth	CHIEF MEDICAL OFFICER	Sell	24,709	$1.07	$26.4K
May 1, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	13,538	$1.07	$14.5K
May 1, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	894	$1.07	$956.58
Apr 11, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	7,603	$0.60	$4.6K
Mar 5, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	3,594	$1.36	$4.9K
Mar 5, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	3,594	$1.36	$4.9K
Mar 5, 2025↗	NEWELL WILLIAM J	CEO	Sell	6,708	$1.36	$9.1K
Mar 4, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	3,748	$1.42	$5.3K
Mar 4, 2025↗	Chung Jane	PRESIDENT AND COO	Sell	2,334	$1.42	$3.3K
Mar 4, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	3,748	$1.42	$5.3K
Mar 4, 2025↗	NEWELL WILLIAM J	CEO	Sell	11,136	$1.42	$15.8K
Mar 1, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	10,320	$1.59	$16.4K
Mar 1, 2025↗	Chung Jane	PRESIDENT AND COO	Sell	9,450	$1.59	$15.0K
Mar 1, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	8,327	$1.59	$13.2K
Mar 1, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Sell	4,621	$1.59	$7.3K
Mar 1, 2025↗	NEWELL WILLIAM J	CEO	Sell	25,203	$1.59	$40.1K
Mar 1, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	4,672	$1.59	$7.4K
Feb 28, 2025↗	Borgman Anne Elizabeth	CHIEF MEDICAL OFFICER	Sell	20,026	$1.59	$31.8K

STRO Insider Buying Activity

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

Date	Insider	Role	Type	Shares	Avg Price	Value
Oct 15, 2025↗	Chow Gregory K.	CFO	Buy	19,750	$0.81	$16.0K
Oct 15, 2025↗	Chung Jane	Chief Executive Officer	Buy	12,500	$0.80	$10.0K
Oct 15, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Buy	17,000	$0.80	$13.6K
Oct 15, 2025↗	MATSUI CONNIE	Director	Buy	50,000	$0.80	$40.0K
Oct 15, 2025↗	Pauling David	Chief Admin. Ofcr. & GC	Buy	12,504	$0.80	$10.0K

STRO Insider Selling Activity

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

Date	Insider	Role	Type	Shares	Avg Price	Value
Dec 12, 2025↗	Chung Jane	Chief Executive Officer	Sell	894	$8.02	$7.2K
Sep 18, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Sell	13,417	$0.90	$12.1K
Aug 9, 2025↗	Chung Jane	Chief Executive Officer	Sell	6,708	$0.80	$5.4K
Jul 8, 2025↗	Leyman Barbara	Chief Business Officer	Sell	8,944	$0.78	$7.0K
May 15, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	15,995	$0.88	$14.1K
May 1, 2025↗	Borgman Anne Elizabeth	CHIEF MEDICAL OFFICER	Sell	24,709	$1.07	$26.4K
May 1, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	13,538	$1.07	$14.5K
May 1, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	894	$1.07	$956.58
Apr 11, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	7,603	$0.60	$4.6K
Mar 5, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	3,594	$1.36	$4.9K
Mar 5, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	3,594	$1.36	$4.9K
Mar 5, 2025↗	NEWELL WILLIAM J	CEO	Sell	6,708	$1.36	$9.1K
Mar 4, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	3,748	$1.42	$5.3K
Mar 4, 2025↗	Chung Jane	PRESIDENT AND COO	Sell	2,334	$1.42	$3.3K
Mar 4, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	3,748	$1.42	$5.3K
Mar 4, 2025↗	NEWELL WILLIAM J	CEO	Sell	11,136	$1.42	$15.8K
Mar 1, 2025↗	ALBINI EDWARD C	CFO AND SECRETARY	Sell	10,320	$1.59	$16.4K
Mar 1, 2025↗	Chung Jane	PRESIDENT AND COO	Sell	9,450	$1.59	$15.0K
Mar 1, 2025↗	FITZPATRICK LINDA A	CHIEF PEOPLE & COMM. OFFICER	Sell	8,327	$1.59	$13.2K
Mar 1, 2025↗	Gerber Hans-Peter	CHIEF SCIENTIFIC OFFICER	Sell	4,621	$1.59	$7.3K
Mar 1, 2025↗	NEWELL WILLIAM J	CEO	Sell	25,203	$1.59	$40.1K
Mar 1, 2025↗	Srinivasan Venkatesh	CHIEF TECH OP OFFICER	Sell	4,672	$1.59	$7.4K
Feb 28, 2025↗	Borgman Anne Elizabeth	CHIEF MEDICAL OFFICER	Sell	20,026	$1.59	$31.8K