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Sutro Biopharma Insider Trading Activity

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$9.93

0.11.02%

At close: Dec 15, 4:00 PM EST

$9.74

-0.19-1.91%

After Hours: 6:06 PM EST

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Sutro Biopharma Insider Trading Activity | NASDAQ:STRO | Benzinga

Track the latest Sutro Biopharma insider trading activity. Stay informed on recent buys, sells, and market impact for Sutro Biopharma stock.

What is Insider Activity?

Insider trading activity involves company insiders, such as executives, directors, and employees, engaging in transactions of their own company's stock. Insiders' buy and sell transactions provide valuable insights into their confidence in the company's future performance.

What are Sutro Biopharma Inc Insiders Doing?

Insiders have report no purchases/sales in the last 30 days.

Notable Recent Insider Buys and Sales

On October 16, 2025, Connie Matsui, the company's - purchased 50K shares for $0.8 each.
On October 16, 2025, Gregory K Chow, the company's CFO purchased 19.75K shares for $0.81 each.
On October 16, 2025, Hans-Peter Gerber, the company's CHIEF SCIENTIFIC OFFICER purchased 17K shares for $0.8 each.

Ownership Statistics for Sutro Biopharma Inc

Shares Outstanding

8.519M

Insider Shares Owned

1.276M

Insider Percentage Owned

1.51%

Institutional Shares Held

8.171M

Institutional Percentage Held

9.60%


Oct 16, 2025	Hans-Peter Gerber	CHIEF SCIENTIFIC OFFICER	17.00K	$0.80	$13.61K	BUY	31.00%	71.83K	Oct 15	View
Oct 16, 2025	Gregory K Chow	CFO	19.75K	$0.81	$16.00K	BUY	∞	19.75K	Oct 15	View
Oct 16, 2025	Jane Chung	CHIEF EXECUTIVE OFFICER	12.50K	$0.80	$10.01K	BUY	11.33%	122.85K	Oct 15	View
Oct 16, 2025	Connie Matsui	—	50.00K	$0.80	$39.95K	BUY	∞	50.00K	Oct 15	View
Oct 16, 2025	David Pauling	CHIEF ADMIN. OFCR. & GC	12.50K	$0.80	$9.99K	BUY	21.11%	71.74K	Oct 15	View
Jan 31, 2024	Nicki Vasquez	CHIEF PORT. STRAT & ALNCE OFCR	-10.71K	$5.00	-$66.03K	SELL	-42.86%	14.28K	Jan 29	View
Aug 29, 2023	Brunilda Shtylla	CHIEF BUSINESS OFFICER	-15.43K	$4.71	-$72.59K	SELL	-100.00%	0.00	Aug 28	View
Aug 28, 2023	Brunilda Shtylla	CHIEF BUSINESS OFFICER	-11.61K	$4.59	-$53.28K	SELL	-47.32%	12.93K	Aug 25	View
Mar 15, 2022	William J Newell	CEO	10.00K	$7.75	$77.51K	BUY	4.55%	229.99K	Mar 14	View
Sep 28, 2021	Nicki Vasquez	CHIEF PORT. STRAT & ALNCE OFCR	0.00	$18.83	-$112.40K	SELL-OPTIONS	0.00%	7.27K	Sep 24 - Sep 28	View
Jan 27, 2021	Trevor Hallam	CHIEF SCIENTIFIC OFFICER	0.00	$15.04	-$51.09K	SELL-OPTIONS	0.00%	56.12K	Jan 26	View
Dec 29, 2020	Trevor Hallam	—	0.00	$13.36	-$43.10K	OPTION EXERCISE	0.00%	36.71K	Dec 28	View
Nov 30, 2020	Trevor Hallam	—	0.00	$10.69	-$30.28K	OPTION EXERCISE	0.00%	36.71K	Nov 27	View
Nov 06, 2020	Trevor Hallam	—	0.00	$9.68	-$178.23K	OPTION EXERCISE	0.00%	36.71K	Nov 05	View
Sep 28, 2020	Trevor Hallam	—	10.74K	$10.30	-$73.77K	TAX	63.97%	27.53K	Sep 25 - Sep 28	View
Sep 22, 2020	John G. Freund	—	-400.00K	$12.00	-$4.80M	SELL	-41.66%	560.05K	Sep 18	View
Sep 15, 2020	John G. Freund	—	-500.00K	$10.00	-$5.00M	SELL	-34.25%	960.05K	Sep 11	View
Aug 27, 2020	Trevor Hallam	—	-975.00	$9.04	-$8.82K	SELL	-5.49%	16.79K	Aug 26	View
Aug 21, 2020	John G. Freund	—	-500.00K	$8.72	-$4.36M	SELL	-25.51%	1.46M	Aug 19	View
Jul 28, 2020	Trevor Hallam	—	-975.00	$8.06	-$7.86K	SELL	-5.20%	17.77K	Jul 27	View
Jun 29, 2020	Trevor Hallam	—	-975.00	$8.02	-$7.82K	SELL	-4.95%	18.74K	Jun 26	View
May 27, 2020	Trevor Hallam	—	-975.00	$10.00	-$9.75K	SELL	-4.71%	19.71K	May 26	View
May 14, 2020	William Newell	CEO	64.52K	$7.75	$500.00K	BUY	50.32%	192.72K	May 14	View
May 14, 2020	Arturo Molina	—	6.45K	$7.75	$50.00K	PURCHASE	114.54%	12.08K	May 14	View
May 14, 2020	Linda Fitzpatrick	—	3.23K	$7.75	$24.99K	PURCHASE	19.95%	19.39K	May 14	View
Apr 27, 2020	Trevor Hallam	—	-975.00	$9.42	-$9.18K	SELL	-4.50%	20.69K	Apr 27	View
Mar 27, 2020	Trevor Hallam	—	-975.00	$9.69	-$9.45K	SELL	-4.31%	21.66K	Mar 26	View
Feb 27, 2020	Trevor Hallam	—	-975.00	$10.47	-$10.21K	SELL	-4.13%	22.64K	Feb 26	View
Jan 28, 2020	Trevor Hallam	—	-975.00	$10.51	-$10.25K	SELL	-3.97%	23.61K	Jan 27	View
Dec 27, 2019	Trevor Hallam	CHIEF SCIENCE OFFICER	-975.00	$11.08	-$10.80K	SELL	-3.81%	24.59K	Dec 26	View
Nov 27, 2019	Trevor Hallam	CHIEF SCIENCE OFFICER	-975.00	$10.68	-$10.41K	SELL	-3.67%	25.57K	Nov 26	View
Oct 30, 2019	Trevor Hallam	CHIEF SCIENCE OFFICER	-975.00	$9.98	-$9.73K	SELL	-3.54%	26.54K	Oct 28	View
Oct 02, 2018	Merck Co Inc Merck Sharp Dohme Corp	10% OWNER	2.72M	$15.00	$10.00M	BUY	∞	2.72M	Oct 01	View
Oct 01, 2018	Daniel H Petree	DIRECTOR	192.00	$10.40	-$5.66	SELL-OPTIONS	∞	192.00	Oct 01	View

FAQ

Is insider trading legal?

Insider trading is legal so long as the insiders report those trades to the SEC. Illegal securities trading occurs when the insider is violating a fiduciary duty or fails to report their trades.

What are some examples of market manipulation?

Insider trading, pump and dump schemes, front running and wash trades are all examples of market manipulation. Investors who track insider asset movement should think carefully about why these insiders are trading their stocks before moving forward.

Browse insider trades on all stocks.