Inhibrx Biosciences (INBX) logo

Inhibrx Biosciences (INBX) stock

Biologic therapeutics , market cap $1.1B

$72.16
+0.53%

As of Monday's close · Live for Pro members at the open

Why is INBX down?

Down 27% from Oct 21 to Oct 30 while the S&P 500 fell 2%.

  • Inhibrx Biosciences fell 27% from Oct 21 to Oct 30. 23 points of it came on Oct 28.

Sources: Price history, Oct 30, 2026

−2Volatility moves 9.9% a day on a $138M loss over four quarters, with no positive free cash flow

Tell me next time INBX moves

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1 more reason, free with an account →1 more reason why INBX fell 27% since Oct 21, from its filings, with how the business stands, the timeline, and its peers, for Pro members.
Quality Score
0
Below Average
In its industry
#133of 291

INBX's Quality Score was unchanged on Mon, Nov 2, at 0.

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

Get an alert when INBX files news on its trialsSee it live, free until Wednesday 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.

Next2H 2026“…first commercial launch of ozekibart for the treatment of metastatic or unresectable chondrosarcoma 2H 2026…”Launch, if approved · SEC filing · Sep 28
Cash$133M, about 4 quarters at the last year's spendingOn Jun 30

Key facts on INBX

Key facts on INBX
Holding it backMoves 9.9% a day with no profit behind it
Latest filing10-Q, Aug 13 Filed its quarterly report (10-Q) for the quarter to Jun 30, 2026
1 more reason behind INBX's 0, free with an account →3 more reasons behind INBX's 0, for Pro members.

What's next

Thu Nov 19: Connective Tissue Oncology Society…Industry event · date confirmed.

Tested. Our top-⁠scored stocks returned 2.2x the average stock over the next month. How we tested it

Cash$133M, about 4 quarters at the last year's spendingOn Jun 30

INBX catalysts

Coming up

After its last 4 reports it closed -3.9% on average, higher 1 of 4 times.

4 more coming up and 4 past catalysts since 2026, with sizes and sources, for Pro members.Get in free →

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

Next step the company has named

2H 2026“…approval and first commercial launch of ozekibart for the treatment of metastatic or unresectable chondrosarcoma 2H 2026 1H 2027 2H 2027 Ozekibart (INBRX-109) Interim data from…”Launch, if approved · SEC filing · Sep 28

What it means: when the company plans to start selling, if the drug is approved.

Lead program
INBRX-109 · Ewing Sarcoma · Phase 1
Its trial
INBRX-109 in Subjects With Locally Advanced or Metastatic Solid Tumors Including SarcomasPhase 1 · Recruiting · 411 people · main data estimated Dec 2028 · NCT03715933

3 more trials, 5 more milestones and 27 filings, for Pro members.

Cash runway Jun 30 balance sheet

About 4 quarters

$133M in cash and short-term investments, at its spending over the last year

What it means: how long the cash would last at the same pace, before any new money.

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

Dilution on the horizon

No shelf registration or at-the-market program on file in the last three years.

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

Insiders

CEO Mark Lappe bought 10,040 shares on Oct 14. 8 more insider trades this year.

From Form 4: open-market buys and sales only.

For Pro members: every trade, and Mark Lappe’s 8 filings and quotes.

Get an alert when INBX files news on its trialsSee it live, free until Wednesday 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 filings, soonest first and small companies first.

DateStockDrug

11 more FDA dates and 102 trial data dates in the next 60 days, each on the FDA calendar. Pro members see whether each company's cash lasts past its date, with an optional alert before it. See all 143 dates, ranked →

Here is what Pro members see.

  • The same page for Pro members, on AMD

    Its Quality Score and rank, the line that drives it, and the live price.

  • The full chart

    A year of candles to start, out to the whole history, with insider trades marked and the Quality Score under the price.

  • Every line of the score

    Price action, the company, and signals, each with its points, on INBX and every other stock.

  • FDA dates, counted down

    Each date in the company's words, its cash against the date, and an optional alert before it.

  • CEOs buying their own stock

    Every CEO buy, biggest names first. Sort, filter, save the list, and set optional alerts.

  • Congress trades

    A member's trades, newest first, each with its amount. Sort and filter the whole list.

  • 14 chart checks, read for you

    The ones firing on the stock, each in plain words, its rule a tap away.

  • Earnings, week by week

    Who reports each day, and how each stock took its last four reports.

  • The market map

    Every stock a box, colored by its Quality Score.

  • Themes, ranked live

    Each theme's stocks ranked by Quality Score, live. Here, AI chips.

  • The top 10, every day

    The ten highest Quality Scores at each close, kept day by day, week by week.

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    Your stocks by Quality Score, today's move, or name.

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  • Prices refresh every 2.5 seconds during market hours.
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INBX has 2 of 14 chart checks firing

Volume1 of 3 shown
Tight range1 of 3 shown
Buying1 of 3 shown
The other 10 checks on INBX, and all 14 on every stock.Get in free →

INBX RSI today: 31.7, below its 50-day and 200-day averages

Not scored

Not in the Quality Score: over 20 years of tests, 2006 to 2026, they added no edge.

The deep dive on INBX

7 more findings on INBX, each with its source, for Pro membersGet in free →

How INBX ranks in Biotech

INBX is #133 of 291 by Quality Score.

How INBX ranks in Biotech
133Inhibrx Biosciences (INBX) logoINBXInhibrx Biosciences0

More in Biotech

When does INBX report earnings, and what happens after?

Reports Fri Nov 13, after the close (in 11 days). Confirmed.

What an earnings report is: every 3 months, a company tells everyone how much it sold and earned. We read the figures, the outlook, and how the stock moved after.

What INBX reported on Aug 13, 2026

The quarter

The figures are not read from the release yet.

“The increase is primarily due to higher interest expense on the Company's $175.0 million outstanding loan balance during the second quarter of 2026 as compared to $100.0 million outstanding during the second quarter of 2025.”

The filing on EDGAR

Where the sales came from

INBX's results filing gives no sales by line in a table we read.

The outlook

No outlook figures read from this release.

The numbers

Market value
$1.1B
today
Free cash flow
-$132M
last 12 months

No analyst estimates on Breakaway: every figure here is filed.

The whole report on INBX: every line of its sales, every outlook beside the one it replaced, and the company's words, for Pro members.Get in free →
ReportedGapReaction5
sessions
Aug 13, 2026After close-5.4%-8.9%+2.2%
May 14, 2026After close+2.1%-6.5%-4.8%
Mar 19, 2026After close-1.5%-6.1%+1.4%

INBX closed higher after 1 of its last 4 reports.

All 4 reports, and INBX's Quality Score going into each

Everyone reporting earnings next week

INBX sales and profit by year

Sales and profit by year

Sales grew in one of the last two years, to $1.3M in 2025. It lost money in 2025 after a profit in 2024.

INBX share count over time

1% more shares than a year earlier.

Weighted shares, quarter to Jun 30, 2026, both from one filing

Shares of INBX outstanding, as filed
Shares
outstanding
As
of
14.7MAug 7, 2026
14.7MMay 8, 2026
14.6MMar 11, 2026
14.5MNov 7, 2025
Offerings, shelves, and splits of INBX, from its filings
From its
filings
Filed
Registered shares for sale (S-1)Jun 11, 2024

Insiders trading INBX

INBX insider trades

3 insiders bought $6.3M across 19 filings, and one insider sold $279K across 5 filings, in the last 6 months. The newest:

BuyMark Lappe$210KChief Executive Officerat $85.00 on Oct 14, filed Oct 14
All 24 insider filings on INBX from the last six months, for Pro members.Get in free →

All INBX insider trades

INBX's officers and directors

Officers and directors with a Form 4 in the last 12 months.

See insider trades by person

Which ETFs hold INBX?

In ETFs: INBX is under 0.1% of VTI, the most of the 24 funds Breakaway covers, by their holdings as filed for Jun 30, 2026.

About Inhibrx Biosciences

Inhibrx Biosciences Inc is a clinical-stage biopharmaceutical company with a pipeline of novel biologic therapeutic candidates, developed using its proprietary modular protein engineering platforms. Its clinical pipeline of therapeutic candidates includes INBRX-109 and INBRX-106, both of which utilize their multivalent formats where the precise valency can be optimized in a target-centric way to mediate what experts consider to be the predominant agonist function.

110 employeesLa Jolla, CAinhibrx.com

What Inhibrx Biosciences says it competes with

“The biopharmaceutical industry is characterized by rapid evolution of technologies, fierce competition and strong defense of intellectual property.”

From its annual report, SEC filing · Mar 19, 2026

2 more sentences and what it says it does, for Pro membersGet in free →

INBX's score card

Inhibrx Biosciences (INBX): Quality Score 0, Below Average, #133 of 291 in Biotech, with its price, on Breakaway
The picture a link to this page shows when it is shared.

Pro members see every line of every stock's score.

  • What would turn INBX's score around: 8 things
  • 3 more filings explained, a plain line each
  • 3 more things pulling INBX's score down
BreakawayOct 14Mark Lappe bought INBX$210K at $85.00, filed Oct 14

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See INBX's 14 chart checks

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Straight Answers

As of Nov 2, 2026: INBX's Quality Score is 0 (Below Average), #133 of 291 in Biotech. Insiders bought $6.3M and sold $279K in the last 6 months (Form 4).

Is INBX a good stock to buy? What its Quality Score says

INBX scores 0 today, which Breakaway calls Below Average. It is #133 of 291 in Biotech by Quality Score, with 2 of 14 chart checks firing. Down 27% from Oct 21 to Oct 30 while the S&P 500 fell 2%. Cash lasts about 4 quarters at its spending (to Jun 30). Breakaway does not say whether to buy any stock: the score does not know your situation, and it is not a recommendation to buy or sell anything. Please do your own research.

What is INBX's Quality Score?

INBX scores 0 today, which Breakaway calls Below Average (0 to 5). That is #133 of 291 in Biotech by Quality Score. The score adds up the chart checks, the trend, the company's filed sales, its profits, the news, insider trades, and Congress trades. The section above lists the lines behind INBX's 0.

Are insiders buying INBX?

3 insiders bought $6.3M across 19 filings, and one insider sold $279K across 5 filings, in the last 6 months. The newest is Mark Lappe, Chief Executive Officer, who bought $210K on Oct 14. Every filing, with the scored weight, for Pro members.

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.

What's next for Inhibrx Biosciences: from its SEC filings and ClinicalTrials.gov, the company's words, the registry's dates, and arithmetic, not a forecast. Companies often miss the dates they set.

The moves after past earnings reports are past behavior, not a forecast.

The price, the score, the chart checks and readings, and the industry rank on this page are delayed at least 15 minutes.

Our top-scored stocks' record: Oct 2021 to Sep 2026, before costs. Recorded live since Sep 9 2026.

Breakaway publishes impersonal securities research and analytical tools: one formula, the same score for everyone. It is not personalized investment advice, and nothing here is a recommendation to buy or sell any security.

Market data from a licensed vendor. The age of every quote is shown on the page.

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