Sutro Biopharma, Inc. STRO
We take great care to ensure that the data presented and summarized in this overview for SUTRO BIOPHARMA, INC. is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding STRO
View all-
Black Rock Inc. New York, NY6.91MShares$6.57 Million0.0% of portfolio
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Suvretta Capital Management, LLC New York, NY6.49MShares$6.16 Million0.17% of portfolio
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Kynam Capital Management, LP Princeton, NJ5.09MShares$4.83 Million0.38% of portfolio
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Israel Englander Millennium Management LLC | New York, Ny4.52MShares$4.3 Million0.0% of portfolio
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Vanguard Group Inc Valley Forge, PA3.68MShares$3.5 Million0.0% of portfolio
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Acadian Asset Management LLC Boston, MA3.39MShares$3.22 Million0.01% of portfolio
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Velan Capital Investment Management LP Alpharetta, GA3.12MShares$2.96 Million5.31% of portfolio
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Tang Capital Management LLC San Diego, CA2.83MShares$2.69 Million0.11% of portfolio
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Vestal Point Capital, LP New York, NY2.6MShares$2.47 Million0.1% of portfolio
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Eversept Partners, LP New York, NY2.29MShares$2.18 Million0.16% of portfolio
Latest Institutional Activity in STRO
Top Purchases
Top Sells
About STRO
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.
Insider Transactions at STRO
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Oct 15
2025
|
Connie Matsui |
BUY
Open market or private purchase
|
Direct |
50,000
+50.0%
|
$0
$0.8 P/Share
|
|
Oct 15
2025
|
Jane Chung Chief Executive Officer |
BUY
Open market or private purchase
|
Direct |
12,500
+9.24%
|
$0
$0.8 P/Share
|
|
Oct 15
2025
|
Gregory K. Chow CFO |
BUY
Open market or private purchase
|
Direct |
19,750
+50.0%
|
$0
$0.81 P/Share
|
|
Oct 15
2025
|
Hans Peter Gerber CHIEF SCIENTIFIC OFFICER |
BUY
Open market or private purchase
|
Direct |
17,000
+19.14%
|
$0
$0.8 P/Share
|
|
Oct 15
2025
|
David Pauling Chief Admin. Ofcr. & GC |
BUY
Open market or private purchase
|
Direct |
12,504
+14.84%
|
$0
$0.8 P/Share
|
|
Sep 18
2025
|
Hans Peter Gerber CHIEF SCIENTIFIC OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
13,417
-19.66%
|
$0
$0.9 P/Share
|
|
Sep 18
2025
|
Hans Peter Gerber CHIEF SCIENTIFIC OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
37,500
+35.46%
|
-
|
|
Aug 09
2025
|
Jane Chung Chief Executive Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
6,708
-5.73%
|
$0
$0.8 P/Share
|
|
Aug 09
2025
|
Jane Chung Chief Executive Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
18,750
+13.81%
|
-
|
|
Jul 08
2025
|
Barbara Leyman Chief Business Officer |
SELL
Payment of exercise price or tax liability
|
Direct |
8,944
-35.78%
|
$0
$0.78 P/Share
|
|
Jul 08
2025
|
Barbara Leyman Chief Business Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
25,000
+50.0%
|
-
|
|
May 15
2025
|
Edward C Albini CFO AND SECRETARY |
SELL
Payment of exercise price or tax liability
|
Direct |
15,995
-9.05%
|
$0
$0.88 P/Share
|
|
May 15
2025
|
Edward C Albini CFO AND SECRETARY |
BUY
Exercise of conversion of derivative security
|
Direct |
44,719
+8.22%
|
-
|
|
May 01
2025
|
Anne Elizabeth Borgman CHIEF MEDICAL OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
24,709
-20.23%
|
$24,709
$1.07 P/Share
|
|
May 01
2025
|
Anne Elizabeth Borgman CHIEF MEDICAL OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
69,063
+22.44%
|
-
|
|
May 01
2025
|
Venkatesh Srinivasan CHIEF TECH OP OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
894
-1.64%
|
$894
$1.07 P/Share
|
|
May 01
2025
|
Venkatesh Srinivasan CHIEF TECH OP OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
2,500
+4.38%
|
-
|
|
May 01
2025
|
Linda A Fitzpatrick CHIEF PEOPLE & COMM. OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
13,538
-10.16%
|
$13,538
$1.07 P/Share
|
|
May 01
2025
|
Linda A Fitzpatrick CHIEF PEOPLE & COMM. OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
37,849
+7.36%
|
-
|
|
Apr 11
2025
|
Venkatesh Srinivasan CHIEF TECH OP OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
7,603
-12.74%
|
$0
$0.6 P/Share
|
Last 12 Months Summary
| Exercise of conversion of derivative security | 589K shares |
|---|---|
| Open market or private purchase | 112K shares |
| Payment of exercise price or tax liability | 218K shares |
|---|