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NASDAQ · Health care

Assembly Biosciences, Inc. (ASMB)

Assembly Biosciences, Inc. brought in $74.8M of revenue over the twelve months to June 30, 2026, up 125.1% from a year earlier. It posted a net loss of $42K. In fiscal 2025 capital spending exceeded operating cash flow by $41.2M. At June 30, 2026 it held $32.3M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 13, 2026.

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

Price
$21.35
-2.02% on the day · November 10, 2026
52-week range $19.20 to $39.71
Market cap
$434.7M
Revenue (last 12 months)
$74.8M
+125.1% year on year
Net margin
-0.1%

Key facts about Assembly Biosciences, Inc.

Net worth
Assembly Biosciences, Inc. has a market value (market cap) of $434.7M at the latest share price, and shareholders' equity of $305.6M 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 $72.3M (+153.5% year on year), with a net loss of $6.1M. Over the 12 months to June 30, 2026: revenue $74.8M, net loss $42K.
Cash flow
In fiscal 2025 operations used $41.1M of cash.
Latest report
The latest periodic report (quarterly report, 10-Q) was filed with the SEC on August 13, 2026 and covers the period to June 30, 2026. Open on SEC EDGAR
Next earnings report
Assembly Biosciences, Inc.'s next report was expected around November 9, 2026 and is not on file with the SEC yet.

What Assembly Biosciences, Inc. does

Assembly Biosciences, Inc. is registered with the SEC under industry code SIC 2834 (Pharmaceutical Preparations). Its shares trade on NASDAQ under the ticker ASMB.

Revenue and profit by year

Revenue
FY18: $14.8M $14.8M FY18FY19: $16M $16M FY19FY20: $79.1M $79.1M FY20FY21: $6.3M $6.3M FY21FY22: $0 $0 FY22FY23: $7.2M $7.2M FY23FY24: $28.5M $28.5M FY24FY25: $72.3M $72.3M FY25
Net income
FY18: -$90.8M -$90.8M FY18FY19: -$97.6M -$97.6M FY19FY20: -$62.2M -$62.2M FY20FY21: -$129.9M -$129.9M FY21FY22: -$93.1M -$93.1M FY22FY23: -$61.2M -$61.2M FY23FY24: -$40.2M -$40.2M FY24FY25: -$6.1M -$6.1M FY25

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

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$72.3M-$12.1M-$6.1M-$0.55-$41.2M
2024$28.5M-$45.4M-$40.2M-$6.69-$51.1M
2023$7.2M-$64.6M-$61.2M-$13.38$22.5M
2022$0-$94.1M-$93.1M-$23.08-$84.6M
2021$6.3M-$132.7M-$129.9M-$36.06-$96.5M
2020$79.1M-$64.8M-$62.2M-$21.04-$63.4M

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

A report was expected around November 9, 2026 and is not on file yet.

Estimated from its filing rhythm: 52 weeks after its report of November 10, 2025. Not a date the company has announced. See the report calendar · Earnings, quarter by quarter

Where ASMB ranks in Health care

Revenue$72.3M
#361 of 751 in Health care · Top 48%
Revenue growth+153.5%
#39 of 532 in Health care · Top 7%
Net margin-8.5%
#276 of 544 in Health care · Bottom 49%
Free cash flow margin-56.9%
#385 of 490 in Health care · Bottom 21%

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 Assembly Biosciences, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. August 20, 2026
  2. August 14, 2026
  3. August 14, 2026
  4. August 13, 2026
    Quarterly report 10-Q · period to June 30, 2026Revenue rose 39% to $13.4M versus the same quarter last year; diluted EPS -$0.20 versus -$1.33.
  5. August 13, 2026
  6. August 13, 2026
  7. August 4, 2026
  8. June 5, 2026
  9. May 26, 2026
  10. May 22, 2026

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

Insider trades

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

Insiders sold $237.6K worth of shares in the last 90 days and bought none on the open market.

Bought (open market)
$0
last 90 days
Sold
$237.6K
last 90 days
Net sold
12,115
$237.6K
DateInsiderWhatSharesPriceValueFiling
November 2, 2026 Okazaki Jason ACEO and President, Director Sold 6,133 $19.61 $120.3K Form 4
November 2, 2026 Okazaki Jason ACEO and President, Director Sold 69 $20.35 $1.4K Form 4
November 2, 2026 Gaggar AnujChief Medical Officer Sold 2,564 $19.61 $50.3K Form 4
November 2, 2026 Gaggar AnujChief Medical Officer Sold 29 $20.35 $590.1 Form 4
November 2, 2026 White Nicole SChief Manufacturing Officer Sold 2,564 $19.61 $50.3K Form 4
November 2, 2026 White Nicole SChief Manufacturing Officer Sold 29 $20.35 $590.1 Form 4
November 2, 2026 Bjorkquist Jeanette MPFO and PAO Sold 718 $19.61 $14.1K Form 4
November 2, 2026 Bjorkquist Jeanette MPFO and PAO Sold 9 $20.35 $183.1 Form 4

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

Who owns ASMB

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
Commodore Capital LP13G, passive with 3 related filers 9.9% 1,615,981 August 15, 2025
RA Capital Management, L.P.13G, passive with 3 related filers 9.5% 1,530,615 August 18, 2025
Farallon Capital Management, L.L.C.13G, passive with 26 related filers 8.1% 1,604,590 August 4, 2026
Dapice Joshua J.13G, passive with 28 related filers 7.8% 1,227,590 February 9, 2026
Paradigm BioCapital Advisors LP13G, passive with 3 related filers 7.8% 1,553,748 August 14, 2026
JANUS HENDERSON GROUP Ltd.13G, passive 6.9% 1,359,514 August 13, 2026

Latest filings below 5%: Alexander Schornstein 3.49% (August 18, 2025); Armistice Capital, LLC 4.99% (February 14, 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. 93 managers reported a position.

HolderSharesValueChange on quarter
Gilead Sciences, Inc.4,977,089$136.8M+471,698
Farallon Capital Management, L.L.C.1,604,590$44.1M+377,000
Paradigm Biocapital Advisors LP1,553,748$42.7M+888,497
Commodore Capital LP1,415,000$38.9M+415,000
RA Capital Management, L.P.1,020,410$28M0
Jupiter Topco LLC849,309$23.4Mnew
BlackRock, Inc.766,819$21.1M+564,076
Parkman Healthcare Partners LLC721,181$19.8M+309,954
Vanguard Capital Management LLC558,942$15.4M+68,495
Point72 Asset Management, L.P.460,593$12.7M+116,488
Seven Fleet Capital Management LP433,147$11.9M+377,000
Millennium Management LLC298,807$8.2M+65,157
Geode Capital Management, LLC280,424$7.7M+147,453
Schonfeld Strategic Advisors LLC242,153$6.7M+121,653
Ameriprise Financial Inc230,000$6.3Mnew
DV Equities, LLC226,415$6.2Mnew
Aberdeen Group plc207,047$5.7Mnew
Affinity Asset Advisors, LLC190,000$5.2Mnew
B Group, Inc.175,706$4.8M0
State Street Corp171,931$4.7M+115,242

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.

5 insiders reported holding 400,297 shares in total, about $8.5M at the last price.

HolderSharesAs of
Okazaki Jason ACEO and President, Director 195,532 November 2, 2026
Delaney William E IVChief Scientific Officer 74,035 October 30, 2026
White Nicole SChief Manufacturing Officer 59,257 November 2, 2026
Gaggar AnujChief Medical Officer 53,800 November 2, 2026
Bjorkquist Jeanette MPFO and PAO 17,673 November 2, 2026

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about ASMB

What does Assembly Biosciences, Inc. do?

Assembly Biosciences, Inc. is a company in the Health care sector, listed on NASDAQ as ASMB. Its shares trade on NASDAQ under the ticker ASMB.

What is Assembly Biosciences, Inc.'s net worth?

Assembly Biosciences, Inc. has a market value (market cap) of $434.7M at the latest share price, and shareholders' equity of $305.6M 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 Assembly Biosciences, Inc. profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $42K on revenue of $74.8M.

How much revenue does Assembly Biosciences, Inc. make?

Over the twelve months to June 30, 2026 Assembly Biosciences, Inc. reported revenue of $74.8M. That is 125.1% more than a year earlier.

When did Assembly Biosciences, Inc. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 13, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the insider trade from November 3, 2026.

When is Assembly Biosciences, Inc.'s next earnings report?

Assembly Biosciences, Inc.'s next report was expected around November 9, 2026 and is not on file with the SEC yet.

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Where the numbers come from

Financial figures are the values Assembly Biosciences, 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.