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Sutro Biopharma, Inc. (NASDAQ:STRO)

US · Delayed Price · Currency is USD
14.66+0.21 (+1.45%)
 
Market Cap141.87M+71.7%
Revenue (ttm)45.70M-56.3%
Net Income-180.64M+13.4%
EPS-17.42+30.9%
Shares Out9.68M
PE Ration/a
Forward PEn/a
Dividendn/a
Ex-Dividend Daten/a
Volume232,534
Open14.24
Previous Close14.45
Day's Range14.16 - 15.70
52-Week Range7.15 - 43.85
Beta1.50
AnalystsBuy
Price Target51.00(+247.89%)
Earnings DateNov 5, 2026
Insider Score
––Not scored
STRO Insider Score

Insiders here have filed 2 Form 4s in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.

About STRO

Sutro Biopharma, Inc. is a clinical-stage biotechnology company focused on the discovery, development, and manufacturing of innovative therapeutic products. Its primary objective is to create protein-based treatments for challenging conditions like cancer and autoimmune disorders. The company achieves this through its proprietary XpressCF+ platform, a unique technology that integrates cell-free protein synthesis with precise, site-specific drug conjugation. Currently, Sutro's pipeline features two lead antibody-drug conjugate (ADC) candidates, both undergoing Phase 1 clinical evaluation. STRO-001 targets the CD74 protein, designed for individuals with multiple myeloma and non-Hodgkin lymphoma. The second candidate, STRO-002, is engineered to bind to folate receptor-alpha, intended for the treatment of ovarian and endometrial cancers. Strategic alliances are also a key part of its strategy, including collaborations and licensing agreements. A partnership with Merck aims to advance research programs involving cytokine derivatives for both oncological and autoimmune applications. Additionally, an agreement with Celgene Corporation focuses on identifying and developing bispecific antibodies and/or ADCs specifically within the immuno-oncology domain. Founded in 2003, the company initially operated under the name Fundamental Applied Biology, Inc. Its corporate headquarters are located in South San Francisco, California.

Address
111 Oyster Point Boulevard, South San Francisco, CA, 94080, US
Market Cap
142 million
Employees
128
Industrial Classification
Biotechnology

What Are Insiders Doing?

Open-market buy / sell balanceNet Buying
Sold
$0
Bought
$89.60K

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

1 Day
+1.45%
5 Days
-9.23%
1 Month
-23.25%
6 Months
-45.80%
1 Year
+71.66%

$STRO stock is featured in our Insider Trades datasets.

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Recently reported changes in STRO holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

View all institutional owners →

Insider Trading

Quarterly net insider trading by STRO's directors and management

Net Shares Purchased by Insiders−200k−100k02025Q42026Q12026Q22026Q32026Q4

Source: SEC EDGAR (Form 4)

Corporate Lobbying

STRO Estimated quarterly lobbying spending

Source: U.S. Senate LDA

STRO Revenue by Segment

$19.65MTotal
SegmentRevenue% of All
Collaboration and License Agreements and Supply Agreements$9.84M50.06%
Astellas License and Collaboration Agreement$9.64M49.04%
Vaxcyte Agreements$177.00K0.90%

As of: Q2 2026 (Jun 30, 2026) · Source: SEC EDGAR (10-Q)

U.S. Patents

New STRO patent grants

Loading patent grants…

Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to STRO from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in STRO

ETFEst. Holding Size
VTIVanguard Morningstar Total Stock Market ETF$10.15M
IWMiShares Russell 2000 ETF$5.53M
VXFVanguard Extended Market ETF$3.63M
FESMFidelity Enhanced Small Cap ETF$2.28M
VTWOVanguard Russell 2000 ETF$1.85M
VHTVanguard Health Care ETF$922.40K

Estimated from each fund’s disclosed top holdings × AUM

STRO Insider Score

Our composite score: insider buying, sector, volume, tone & dilution

No Insider Score for STRO yet — no open-market insider buys or sells in the last 90 days.

Bull Case vs Bear Case

AI-generated from STRO’s recent data — informational, not investment advice

Generating analysis…

Recent Insider Activity

Buys
5
Sells
0
Buy Value
$89.60K
Distinct Buyers
5

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.
Sutro Biopharma, Inc. (STRO) Insider Trading, Form 4 Buys & Sells | InsiderBuying.com