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Sutro Biopharma, Inc. (STRO)

Sutro Biopharma, Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Sutro Biopharma, Inc. (STRO) is a Biotechnology company based in US with a market capitalization of $251.1M. Revenue grew 65.2% year-over-year and free cash flow was negative at -$178.9M. This page tracks STRO's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 269 employees · IPO Sep 27, 2018

Valuation

Valuation & price

$38.97 · as of May 17, 2026 · -4.7% vs 52w high

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P/E ratio

Latest-FY diluted EPS

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P/B ratio

Market cap ÷ book equity

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Dividend yield

Price — last 12 months

$40.91$24.10$7.30Jul 25Dec 25Jul 26Jul 7, 25$7.41Jul 9, 25$7.86Jul 11, 25$7.61Jul 15, 25$7.50Jul 17, 25$7.66Jul 21, 25$8.00Jul 23, 25$8.64Jul 25, 25$8.87Jul 29, 25$8.40Jul 31, 25$8.05Aug 4, 25$8.27Aug 6, 25$8.18Aug 11, 25$7.73Aug 13, 25$7.72Aug 15, 25$8.78Aug 19, 25$8.62Aug 21, 25$8.48Aug 25, 25$8.37Aug 27, 25$9.04Aug 29, 25$8.57Sep 3, 25$10.10Sep 5, 25$10.60Sep 9, 25$9.71Sep 11, 25$9.70Sep 16, 25$8.92Sep 18, 25$9.03Sep 22, 25$8.90Sep 24, 25$8.77Sep 26, 25$8.87Sep 30, 25$8.68Oct 2, 25$9.02Oct 6, 25$8.71Oct 8, 25$8.54Oct 10, 25$8.04Oct 14, 25$8.00Oct 16, 25$8.81Oct 21, 25$12.00Oct 23, 25$10.60Oct 27, 25$11.60Oct 29, 25$10.50Oct 31, 25$11.20Nov 4, 25$10.20Nov 6, 25$9.42Nov 10, 25$8.06Nov 12, 25$8.11Nov 14, 25$9.05Nov 18, 25$8.90Nov 20, 25$8.47Nov 25, 25$8.60Nov 28, 25$9.19Dec 2, 25$7.30Dec 4, 25$9.38Dec 8, 25$8.49Dec 10, 25$9.00Dec 12, 25$9.83Dec 16, 25$9.81Dec 18, 25$8.93Dec 22, 25$10.37Dec 24, 25$10.75Dec 29, 25$11.10Jan 2, 26$10.96Jan 6, 26$11.52Jan 8, 26$11.75Jan 12, 26$11.33Jan 14, 26$12.66Jan 16, 26$13.82Jan 21, 26$15.80Jan 23, 26$15.05Jan 27, 26$16.62Jan 29, 26$14.92Feb 2, 26$15.10Feb 4, 26$14.89Feb 9, 26$13.98Feb 11, 26$15.73Feb 13, 26$16.16Feb 18, 26$17.43Feb 20, 26$18.42Feb 24, 26$19.49Feb 26, 26$20.47Mar 2, 26$20.55Mar 4, 26$21.31Mar 6, 26$25.29Mar 10, 26$25.43Mar 12, 26$24.45Mar 17, 26$22.94Mar 19, 26$21.12Mar 23, 26$21.33Mar 25, 26$23.50Mar 27, 26$24.43Mar 31, 26$24.91Apr 2, 26$23.78Apr 7, 26$25.71Apr 9, 26$26.76Apr 13, 26$26.19Apr 15, 26$29.77Apr 17, 26$31.55Apr 22, 26$35.53Apr 24, 26$33.33Apr 28, 26$34.69Apr 30, 26$36.62May 4, 26$38.39May 6, 26$37.69May 8, 26$40.24May 12, 26$40.91May 14, 26$38.42May 18, 26$34.48May 20, 26$31.13May 22, 26$25.57May 28, 26$29.63Jun 1, 26$28.25Jun 3, 26$27.18Jun 5, 26$26.09Jun 9, 26$25.79Jun 11, 26$26.48Jun 15, 26$30.20Jun 17, 26$28.41Jun 22, 26$31.55Jun 24, 26$30.03Jun 26, 26$30.52Jul 2, 26$30.43
$7.3052-week range$40.91
Loading valuation history…

Fundamentals

Key fundamentals

$251.1M

Market cap

65.2%

Revenue growth (YoY)

92.8%

Gross margin

-$178.9M

Free cash flow (USD)

-$125.8M

Net debt

Net cash position

10.6%

Share dilution

0/4

Graham criteria passed

Defensive-investor screen

Healthcare

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$59.7MFY 2017$51.7MFY 2018$38.4MFY 2019$42.7MFY 2020$42.7MFY 2021$61.9MFY 2022$67.8MFY 2023$153.7MFY 2024$62.0MFY 2025$102.5M
$59.7M$102.5M

Free cash flow by year

2016 → 2025

FY 2016$-17.5MFY 2017$-40.4MFY 2018$11.1MFY 2019$-68.5MFY 2020$-74.9MFY 2021$-97.0MFY 2022$-4.3MFY 2023$-115.9MFY 2024$-194.6MFY 2025$-178.9M
-$17.5M-$178.9M

Gross margin by year

2021 → 2025

FY 202184.2%FY 202287.8%FY 202395.6%FY 202488.4%FY 202592.8%
84.2%92.8%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last reported: May 14, 2026 (EPS $-2.94)

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventAnnual Meeting ResultsJun 8, 2026Filing
  • 8-K eventEarnings ReleaseMay 14, 2026Filing
  • Quarterly report10-Q FiledMay 14, 2026Filing

Questions

Frequently asked questions

What is Sutro Biopharma, Inc.'s market cap?

Sutro Biopharma, Inc. (STRO) has a market capitalization of $251.1M.

What is STRO's P/E ratio?

A meaningful P/E ratio is not available for STRO — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

When did Sutro Biopharma, Inc. last report earnings?

STRO last reported earnings on May 14, 2026; the next date is not yet scheduled.

Are insiders buying STRO stock?

SEC Form 4 filings show no open-market insider buys at Sutro Biopharma, Inc. in the last 90 days (0 sells).

Same arena

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

Search the actual 10-K / 10-Q text with AI research angles

News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.