Sutro Biopharma, Inc.

Sutro Biopharma, Inc.

STRO·NASDAQ

$27.18

+11%
HealthcareBiotechnology

Sutro Biopharma, Inc. operates as clinical stage drug discovery, development, and manufacturing company. It focuses on creating protein therapeutics for cancer and autoimmune disorders through integrated cell-free protein synthesis and site-specific conjugation platform, XpressCF+.The company's product candidates include STRO-001, an antibody-drug conjugate (ADC) directed against the cancer target CD74 for patients with multiple myeloma and non-Hodgkin lymphoma that is in Phase 1 clinical trials; and STRO-002, an ADC directed against folate receptor-alpha for patients with ovarian and endometrial cancers, which is in Phase 1 clinical trials. It has collaboration and license agreements with Merck Collaboration to develop research programs focusing on cytokine derivatives for cancer and autoimmune disorders; and Celgene Corporation to discover and develop bispecific antibodies and/or ADCs focused on the field of immuno-oncology. The company was formerly known as Fundamental Applied Biology, Inc. Sutro Biopharma, Inc. was incorporated in 2003 and is headquartered in South San Francisco, California.

At a Glance

Live Snapshot
Market Cap$263.03M
EPS-22.4900
P/E Ratio-1.21
Earnings Date08/06/2026
-98.52%
Return on Invested Capital
9%
3Y+177.0%
5Y+405.0%
10Y-1479.0%
144.27%
Return on Equity
-128%
3Y-363.0%
5Y-1591.0%
10Y-7805.0%
-109.93%
Return on Assets
87%
3Y+275.0%
5Y+1248.0%
10Y-4574.0%
Sutro Biopharma, Inc.

Sutro Biopharma, Inc. Management Team

STRO · NASDAQ
MD

Mr. David Pauling J.D., M.A.

Chief Administrative Officer & General Counsel

male
DB

Dr. Barbara Leyman Ph.D.

Chief Business Officer

Born 1970(Age 56)
MJ

Ms. Jane Chung R.Ph.

Chief Executive Officer & Director

Compensation

$820,000

Born 1971(Age 55)
female
ME

Mr. Edward C. Albini M.B.A

Chief Financial Officer & Secretary

Compensation

$629,660

Born 1958(Age 68)
male
DH

Dr. Hans-Peter Gerber Ph.D.

Chief Scientific Officer

Compensation

$575,833

Born 1963(Age 63)
DV

Dr. Venkatesh Srinivasan Ph.d.

Chief Technical Operations Officer

Born 1962(Age 64)
DJ

Dr. James R. Swartz DSc, Ph.D., Sc.D.

Founder

MR

Ms. Regina Cheng

Vice President & Controller

female
stro

Sutro Biopharma, Inc. Insider Positioning

STRO · NASDAQ

During the last 12 months, insiders have purchased $430K and sold $19K worth of STRO shares, resulting in $411K of net buying activity.

3 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

3-6 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

6-9 Months

Bought

111.8K

89.56K

Sold

13.4K

12.07K

Net Activity

+77K

+$77K

9-12 Months

Bought

400.0K

340.00K

Sold

8.9K

6.98K

Net Activity

+333K

+$333K

Top Buyers

1
MC

Matsui Connie

Director

100.0K shares2 transactions

$82K

2
DM

Dybbs Michael

Director

50.0K shares1 transactions

$43K

3
PDH

Petree Daniel H

Director

50.0K shares1 transactions

$43K

4
WJM

Wigginton Jon Marc

Director

50.0K shares1 transactions

$43K

5
PJP

Panek James P

Director

50.0K shares1 transactions

$43K

Top Sellers

1
GH

Gerber Hans-Peter

Officer: Chief Scientific Officer

13.4K shares1 transactions

$12K

2
LB

Leyman Barbara

Officer: Chief Business Officer

8.9K shares1 transactions

$7K

Insider Activity Analysis

Net Insider Sentiment

Bullish

Strong bullish signal with $411K net buying. Insiders are aggressively accumulating shares, suggesting significant confidence in future prospects.

Buy/Sell Ratio

22.55:1

Exceptional buy/sell ratio. Buying dramatically outweighs selling—one of the strongest possible insider signals.

Insider Participation

High Buying

5 insider buyers vs. 2 sellers. Broad-based buying across management team suggests widespread confidence.

Insider Activity Insight

Compelling insider conviction: The combination of strong buy/sell ratio and multiple buyers suggests insiders see attractive risk/reward. Consider this alongside fundamental analysis for confirmation.

SEC Filings

STRO - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2026

N/A

April 22, 2026
June 05, 2026
2026
DEF 14A

DEF 14A 2025

N/A

April 25, 2025
June 06, 2025
2025
DEF 14A

DEF 14A 2024

N/A

April 26, 2024
June 06, 2024
2024
DEF 14A

DEF 14A 2023

N/A

April 28, 2023
June 08, 2023
2023
DEF 14A

DEF 14A 2022

N/A

April 25, 2022
June 06, 2022
2022
DEF 14A

DEF 14A 2021

N/A

April 29, 2021
June 03, 2021
2021
DEF 14A

DEF 14A 2020

N/A

April 24, 2020
June 05, 2020
2020
DEF 14A

DEF 14A 2019

N/A

April 26, 2019
June 07, 2019
2019
Showing 1 to 8 of 8 filings