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NASDAQ · Health care

Sutro Biopharma, Inc. (STRO)

Sutro Biopharma, Inc. brought in $45.7M of revenue over the twelve months to June 30, 2026, down 56.3% from a year earlier. It posted a net loss of $180.6M. At June 30, 2026 it held $54.3M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 12, 2026.

Free, no password. An email when STRO files with the SEC.

Price
$10.61
+10.29% on the day · November 9, 2026
52-week range $7.15 to $43.85
Market cap
$175.9M
Revenue (last 12 months)
$45.7M
-56.3% year on year
Net margin
-395.2%

Key facts about Sutro Biopharma, Inc.

Net worth
Sutro Biopharma, Inc. has a market value (market cap) of $175.9M at the latest share price, and shareholders' equity of -$103.3M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
Revenue and profit
In fiscal 2025 revenue was $102.5M (+65.2% year on year), with a net loss of $191.1M. Over the 12 months to June 30, 2026: revenue $45.7M, net loss $180.6M.
Cash flow
In fiscal 2025 operations used $177.2M of cash.
Latest report
The latest periodic report (quarterly report, 10-Q) was filed with the SEC on August 12, 2026 and covers the period to June 30, 2026. Open on SEC EDGAR
Next earnings report
Sutro Biopharma, Inc.'s next report was expected around November 5, 2026 and is not on file with the SEC yet.

What Sutro Biopharma, Inc. does

Sutro Biopharma, Inc. is registered with the SEC under industry code SIC 2836 (Biological Products, (No Diagnostic Substances)). Its shares trade on NASDAQ under the ticker STRO.

Revenue and profit by year

Revenue
FY18: $38.4M $38.4M FY18FY19: $42.7M $42.7M FY19FY20: $42.7M $42.7M FY20FY21: $61.9M $61.9M FY21FY22: $67.8M $67.8M FY22FY23: $153.7M $153.7M FY23FY24: $62M $62M FY24FY25: $102.5M $102.5M FY25
Net income
FY18: -$35.3M -$35.3M FY18FY19: -$119.2M -$119.2M FY19FY20: -$32.1M -$32.1M FY20FY21: -$105.5M -$105.5M FY21FY22: -$119.2M -$119.2M FY22FY23: -$106.8M -$106.8M FY23FY24: -$227.5M -$227.5M FY24FY25: -$191.1M -$191.1M FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$102.5M-$158.4M-$191.1M-$22.49n/a
2024$62M-$238.5M-$227.5M-$29.40n/a
2023$153.7M-$89.3M-$106.8M-$17.68n/a
2022$67.8M-$128.9M-$119.2M-$23.34n/a
2021$61.9M-$98.5M-$105.5M-$22.75n/a
2020$42.7M-$71.1M-$32.1M-$9.83n/a

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

A report was expected around November 5, 2026 and is not on file yet.

Estimated from its filing rhythm: 52 weeks after its report of November 6, 2025. Not a date the company has announced. See the report calendar · Earnings, quarter by quarter

Where STRO ranks in Health care

Revenue$102.5M
#326 of 751 in Health care · Top 43%
Revenue growth+65.2%
#71 of 532 in Health care · Top 13%
Net margin-186.5%
#474 of 544 in Health care · Bottom 13%

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Health care

Latest SEC filings

What Sutro Biopharma, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. November 9, 2026
  2. August 14, 2026
  3. August 14, 2026
  4. August 12, 2026
    Quarterly report 10-Q · period to June 30, 2026Revenue fell 85% to $9.8M versus the same quarter last year; diluted EPS -$2.33 versus -$1.35.
  5. August 12, 2026
  6. July 30, 2026
  7. June 8, 2026
  8. May 15, 2026
  9. May 15, 2026
  10. May 14, 2026
    Quarterly report 10-Q · period to March 31, 2026Revenue fell 17% to $14.5M versus the same quarter last year; diluted EPS -$2.94 versus -$9.08.

Recent insider filings (Forms 3, 4 and 144): 10, the latest on September 22, 2026. Insider transactions on SEC

Insider trades

What the people running Sutro Biopharma, Inc. did with its shares, from the Form 4 filings they must send the SEC within two business days.

No insider bought or sold shares on the open market in the last 90 days. The 2 reported changes were pay in shares, option exercises, shares withheld for tax or gifts.

Bought (open market)
$0
last 90 days
Sold
$0
last 90 days
DateInsiderWhatSharesPriceValueFiling
September 18, 2026 Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER Exercised options 3,750 - - Form 4
September 18, 2026 Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER Shares withheld for tax 1,345 $15.34 $20.6K Form 4
June 2, 2026 Chow Gregory K.CFO Exercised options 2,500 - - Form 4
March 4, 2026 Chung JaneChief Executive Officer, Director Exercised options 788 - - Form 4
March 4, 2026 Chung JaneChief Executive Officer, Director Shares withheld for tax 282 $21.31 $6K Form 4
March 4, 2026 Pauling DavidChief Admin. Ofcr. & GC Exercised options 675 - - Form 4
March 4, 2026 Pauling DavidChief Admin. Ofcr. & GC Shares withheld for tax 277 $21.31 $5.9K Form 4
March 2, 2026 Chung JaneChief Executive Officer, Director Exercised options 7,750 - - Form 4

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns STRO

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

HolderOf classSharesFiled
Perceptive Advisors LLC13G, passive with 2 related filers 7.9% 1,304,846 August 14, 2026
Bvf Partners L P13G, passive with 9 related filers 7.6% 1,251,788 February 18, 2026
Affinity Asset Advisors, LLC13G, passive with 1 related filers 6.5% 1,069,519 May 14, 2026
Srinivas Akkaraju13G, passive with 4 related filers 6.4% 1,062,872 May 15, 2026
Kynam Capital Management, LP13G, passive with 2 related filers 5.27% 0 May 15, 2026
Coastlands Capital LP13G, passive with 4 related filers 5.14% 852,669 November 9, 2026

Latest filings below 5%: Point72 Asset Management, L.P. 1.4% (August 14, 2026); Millennium Management LLC 1.3% (April 21, 2026); Suvretta Capital Management, LLC 0% (February 13, 2026); RA Capital Management, L.P. 0% (August 14, 2025); The Vanguard Group 4.87% (July 29, 2025).

Largest institutional holders

Positions that investment managers reported on Form 13F for the quarter ended June 30, 2026, largest first, with the change on the quarter ended March 31, 2026. Managers file 13F up to 45 days after a quarter ends. 100 managers reported a position.

HolderSharesValueChange on quarter
Perceptive Advisors LLC1,304,846$43.3M+589,539
Bvf Inc1,251,788$41.6M0
Affinity Asset Advisors, LLC1,172,487$38.9M+102,968
BlackRock, Inc.1,122,655$37.3M+889,971
Samsara Biocapital, LLC1,062,872$35.3M0
Kynam Capital Management, LP872,558$29M0
Orbimed Advisors LLC743,944$24.7M-57,200
Balyasny Asset Management L.P.711,162$23.6M+245,370
Vanguard Capital Management LLC694,219$23M-26,223
Eventide Asset Management, LLC585,262$19.4M-130,045
Velan Capital Investment Management LP512,160$17M0
Woodline Partners LP458,029$15.2M+588
ADAR1 Capital Management, LLC404,014$13.4M-120,427
Geode Capital Management, LLC389,692$12.9M+218,306
Millennium Management LLC365,972$12.2M+155,594
State Street Corp305,979$10.2M+253,861
Merck & Co., Inc.272,351$9M0
Acuta Capital Partners, LLC270,251$9M+826
Ameriprise Financial Inc244,669$8.1Mnew
Point72 Asset Management, L.P.237,827$7.9M-454,284

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

4 insiders reported holding 48,125 shares in total, about $510.6K at the last price.

HolderSharesAs of
Chung JaneChief Executive Officer, Director 21,285 March 4, 2026
Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER 12,367 September 18, 2026
Pauling DavidChief Admin. Ofcr. & GC 9,748 March 4, 2026
Chow Gregory K.CFO 4,725 June 2, 2026

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about STRO

What does Sutro Biopharma, Inc. do?

Sutro Biopharma, Inc. is a company in the Health care sector, listed on NASDAQ as STRO. Its shares trade on NASDAQ under the ticker STRO.

What is Sutro Biopharma, Inc.'s net worth?

Sutro Biopharma, Inc. has a market value (market cap) of $175.9M at the latest share price, and shareholders' equity of -$103.3M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Is Sutro Biopharma, Inc. profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $180.6M on revenue of $45.7M.

How much revenue does Sutro Biopharma, Inc. make?

Over the twelve months to June 30, 2026 Sutro Biopharma, Inc. reported revenue of $45.7M. That is 56.3% less than a year earlier.

When did Sutro Biopharma, Inc. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 12, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the passive stake (5% or more) from November 9, 2026.

When is Sutro Biopharma, Inc.'s next earnings report?

Sutro Biopharma, Inc.'s next report was expected around November 5, 2026 and is not on file with the SEC yet.

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Where the numbers come from

Financial figures are the values Sutro Biopharma, Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.