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Assembly Biosciences (ASMB) stock

Market cap $468M

$22.95
+3.47%

Pre-market. Prices 16 minutes old, as of 6:01 AM ET. Pro members see real-⁠time prices.

Quality Score
-2
Poor
In its industry
#179of 308
Biotech

ASMB's Quality Score rose 2 points on Wed, Oct 7, to -2. Closed near the day's high (2 chart checks started).

Holding it back: 146.3% more shares than a year ago. 5 more reasons behind ASMB's -2, for Pro members.

NextEnd of 2026“…(formerly ABI-1179) selected to advance in HSV HPI program, with Phase 2 initiation expected by year-end 2026…”Trial start · 8-K, Aug 14
Cash$320M in cash. One of the last four quarters brought cash in while the others used it.On Jun 30 · the company says “into 2029”

Follow ASMB's trial news. Pro members can get an alert when Assembly Biosciences files news, and see its trials, share raises, and its CEO's filings.

Get an optional alert when ASMB files news on its trialsSee it live, free until tomorrow morning. No account. No card. Then keep going with a free account.

We do the work for you. Every stock is scored and ranked, every 15 seconds while the market is open. Here it's 15 minutes behind. Pro members see it live.

What's next

Expected to report Mon Nov 9, after the close

After its last 4 reports it closed -1.5% on average, higher 2 of 4 times.

For Pro members

  • What would turn ASMB's score around: 8 things
Cash$320M in cash. One of the last four quarters brought cash in while the others used it.On Jun 30 · the company says “into 2029”

What's next for ASMB, and how long its cash lasts

From Assembly Biosciences’s SEC filings and ClinicalTrials.gov: the company’s own words, the registry’s dates, and arithmetic, not a forecast. Companies often miss their own dates.

Next step the company has named

End of 2026“– GS-1179 (formerly ABI-1179) selected to advance in HSV HPI program, with Phase 2 initiation expected by year-end 2026 –”Trial start · 8-K, Aug 14

What it means: when a trial begins, or reaches the stage the company named.

Lead program
GS-1179
Another trial
Safety, Pharmacokinetics, and Efficacy of ABI-6250 in Participants With Chronic Hepatitis D Virus InfectionPhase 2 · Not yet recruiting · 80 people · main data estimated Jun 2027 · NCT07762027

1 more trial, 2 more milestones and 37 filings, for Pro members.

Cash runway Jun 30 balance sheet

$320M in cash

One of the last four quarters brought cash in while the others used it, so an average says little about the next.

What it means: a runway is counted only when each of the last four quarters used cash. The company's own estimate is “into 2029” (8-K, Aug 14).

For Pro members: the cash used each quarter, and the math.

Dilution on the horizon

  • Shelf registration (S-3, filed Mar 19, 2026)
  • At-the-market share sales program (S-3, filed Mar 19, 2026)

A shelf lets a company sell shares later; an at-the-market program sells them into the market over time. Neither is a sale by itself.

For Pro members: 4 raises and their amounts, and the share count against a year ago.

Insiders

PFO and PAO Jeanette M Bjorkquist sold 29 shares on Jun 17. 2 more insider trades this year.

From their own Form 4 filings: buys and sales in the market, not awards or shares withheld for tax.

Get an optional alert when Jason Okazaki buys or sells

For Pro members: every trade, and Jason Okazaki’s 9 filings and quotes.

Get an optional alert when ASMB files news on its trialsSee it live, free until tomorrow morning. No account. No card. Then keep going with a free account.

See every upcoming FDA date →

FDA dates in the next 60 days

Decision dates and advisory committee meetings the companies have announced in their own filings, soonest first and small companies first.

DateStockDrug

8 more FDA dates and 110 trial data dates in the next 60 days. Pro members see every one, with the cash against its date and an optional alert before it. Get in free →

Why ASMB scores -2

PoorTrending down, 2 of 14 checks firingWhat the Quality Score means

Poor is below 0. Average starts at 6, Above Average at 11, Excellent at 15, and Exceptional at 20.

  • +2Chart checks 2 of 14 firing right now, one point each
  • +3Growth sales up 125% on the year, operating margin up 119.2 pointsSales and margins against a year earlier: up to +3 for fast growth and widening margins, down to -2 when both shrink.
  • Long-term trend subtracts
  • Profit subtractsRead on the last four quarters against the four before, or the last full year where no quarters are filed.
  • Dilution subtractsNew shares over the year: -1 at 10% more, -2 at 25% more.
  • Volatility subtractsA daily range of 5% or more with nothing behind it (no profit or cash flow, sales shrinking, or 10% more shares outstanding with no free cash flow): -1, or -2 from 8%.
  • Cash flow subtracts-1 when free cash flow over the last four quarters is negative.

No effect today: Run-up, Size, Persistence, and News.

What every line is worth, and the reason behind it, on ASMB and every other stock.Get in free →

Price, score, chart checks, and the industry rank are from a snapshot taken at 6:01 AM ET, at least 15 minutes behind. How we rank stocks.

Alert me when ASMB's Quality Score turns up

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ASMB has 2 of 14 checks firing

One per group is shown here.

Trend1 of 5 shown
MA FAN21 EMAW.EMAHH/HL52W HI

Averages stacked in order, price near its high.

Volume1 of 3 shown
VOLVDUU/D VOL

Heavy volume on the run, quiet volume at rest.

Tight range1 of 3 shown
ATR SQZSQUEEZENR7

The daily range is tight against its own recent history.

Buying1 of 3 shown
OBV+CLOSE HISPRING

Closes near the high, and buyers step in on dips.

The other 10 checks on ASMB, and all 14 on every stock.Get in free →

Also on the chart

Not scored

Shown for reference. None of these counts toward the Quality Score: in our tests on 20 years of daily prices, none of them improved it.

  • RSI 1431.7

    Above 30, below 50.

  • MACD (12, 26, 9)Below signal

    Crossed below its signal line 20 sessions ago.

  • 50-day average$28.68

    The price is 20.0% below it.

  • 200-day average$28.21

    The price is 18.6% below it. The 50-day is above the 200-day, since Sep 8.

  • ADX 1444.6

    25 or more, with +DI below -DI.

  • Support$21.80

    Swing low from Jun 11, 5.0% below the price.

  • Resistance$28.15

    Swing high from Jul 17, 22.7% above the price.

  • Bollinger Bands (20, 2)Inside

    The bands run from $20.20 to $29.53.

  • Volume0.5x

    Against its 20-day average, for the time of day.

How ASMB ranks in Biotech

ASMB is #179 of 308 by Quality Score. The top three are shown with their scores, and more by name.

More in Biotech, on the Healthcare page

When does ASMB report earnings, and what happens after?

Expected to report Mon Nov 9, after the close (in 32 days). Not yet confirmed by the company.

ReportedGapReaction5 sessions
Aug 14, 2026After close-1.1%-8.9%+4.3%
May 7, 2026After close-1.3%-3.9%-2.0%
Mar 19, 2026After close+9.5%+3.5%+4.9%
Nov 10, 2025After close+0.1%+3.3%+13.3%

The gap is the next open against the close before the report; the reaction is where that session closed. ASMB closed higher after 2 of its last 4. Past behavior, not a forecast.

Report dates and past reactions come from sessions that have already closed, so none of these figures move.

Who is trading ASMB

ASMB insider trades

One insider sold $674.00 across 1 filing in the last 6 months. No open-⁠market buys on record. The newest:

SellJeanette M. Bjorkquist$674.25PFO and PAOat $23.25 on Jun 17, filed Jun 18

An insider has two business days to file a Form 4, so the trade is already days old when it becomes public. Shown as filed, with no delay.

ASMB's officers and directors

Officers and directors with a Form 4 here in the last 12 months. Open one for their trades at every company.

See insider trades by person

About Assembly Biosciences

Assembly Biosciences Inc is a clinical-stage biotechnology company. The Company's pipeline includes multiple clinical-stage investigational therapies, including: (1) two long-acting helicase-primase inhibitors (HPI) for the treatment of recurrent genital herpes; (2) an orally bioavailable hepatitis delta virus entry inhibitor; and (3) a potent next-generation capsid assembly modulator designed to disrupt the replication cycle of hepatitis B virus (HBV) at several key points. The Company's pipeline also includes a novel, oral broad-spectrum non-nucleoside polymerase inhibitor (NNPI) for the treatment of transplant-related herpesviruses.

73 employeesSouth San Francisco, CAassemblybio.com

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  • All 14 checks on ASMB and on all 3,283 stocks
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  • Every filing, and optional alerts on ASMB
BreakawayJun 18Jeanette M. Bjorkquist sold ASMB$674 at $23.25, filed Jun 18

What a filing on ASMB would have sent. Alerts are optional.

See all 14 checks on ASMBSee it live, free until tomorrow morning. No account. No card. Then keep going with a free account.

Straight Answers

Are the prices delayed?

Only on the public pages, which run at least 15 minutes behind. Pro members, and anyone on a guest pass, see real-time prices: the scanner refreshes every 15 seconds, and your watchlist every few seconds, pre-market and after hours included.

Where does the data come from?

Daily bars, quotes, reference data, headlines, and short interest come from Massive, formerly Polygon, a licensed market data vendor. The age of the quotes is shown at the top of every page. Insider trades, notable holders, and profits come straight from the SEC. That means Form 4 filings, 13F filings, and XBRL financial data on EDGAR. Where a company's SEC figures leave the Quality Score's sales, share count, or cash flow line empty, the score reads that figure from Massive's statements, and the Score tab says so. Government filings come from the public STOCK Act and Office of Government Ethics disclosures. The market-wide headlines on the market line also come from the public headline feeds CNBC, MarketWatch, and Yahoo Finance publish, shown as the headline, the source, and a link to the article. Splits, dividends, and the financial statements on each ticker page come from the vendor's reference data. The 8-K filings on EDGAR are read for the items that move a price. Five years of history is loaded for every stock. So the 200-day and 52-week checks rest on real history. Options flow is not part of the product.

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No. It is a screening tool that scores stocks on the chart, the company's own results, and the news and filings. It does not know your situation and it is not a recommendation to buy or sell anything. Please do your own research.

The price, the score, the chart checks and readings, and the industry rank on this page are delayed at least 15 minutes. Filings are shown as filed, because a disclosure is already days or weeks old when it becomes public. Earnings dates and past reactions are settled sessions.