SEC filingsOct 12, 2026 to Oct 19, 2026: insiders reported 840 purchases and sales across 212 companies.840 insider purchases and sales in 7 daysSee the filings →
HornScout

Company profile

INBX

Inhibrx Biosciences, Inc.
NASDAQHealth Care

Latest close: 89.83 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Oct 14, 2026Reported purchase · Form 4Mark Lappe, Chief Executive Officer · $207.7KOpen the filing ↗
  2. Oct 14, 2026Reported purchase · Form 4Mark Lappe, Chief Executive Officer · $209.9KOpen the filing ↗
  3. Oct 14, 2026Reported purchase · Form 4Mark Lappe, Chief Executive Officer · $8.6KOpen the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record14213 flagged findings
Reported transactions (Form 4)58since May 30, 2024 · and 6 other holdings
Corporate events (8-K)11since May 30, 2024

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

Identity

Formerly traded as INXB.

Formerly traded as INXBV.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 142)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Oct 14, 26Form 4 ↗Insider transaction new
  • Sep 28, 268-K ↗Current report · Communication to the market
  • Insider transaction · 2 Form 4 filingsshow all 2hide
  • Insider transaction · 4 Form 4/A filingsshow all 4hide
  • Sep 17, 26Form 4 ↗Insider transaction
  • Sep 15, 26Form 144 ↗Notice of proposed sale
  • Sep 15, 26Form 4 ↗Insider transaction
  • Notice of proposed sale · 2 Form 144 filingsshow all 2hide
  • Sep 10, 26Form 4 ↗Insider transaction
  • Sep 9, 26Form 144 ↗Notice of proposed sale
  • Sep 8, 268-K ↗Current report · Communication to the market · Other events
  • Sep 8, 26Form 144 ↗Notice of proposed sale
  • Insider transaction · 3 Form 4 filingsshow all 3hide
  • Aug 14, 26SCHEDULE 13G ↗Passive stake · Schonfeld Strategic Advisors LLC · 5.3% · event on Jun 30, 26
  • Aug 14, 26SCHEDULE 13G/A ↗Passive stake · Perceptive Advisors LLC · 10.0% · event on Jun 30, 26 · amendment
  • Aug 14, 26SCHEDULE 13G/A ↗Passive stake · VIKING GLOBAL INVESTORS LP · 9.3% · event on Jun 30, 26 · amendment
  • Aug 13, 268-K ↗Current report · Results
  • Aug 13, 2610-Q ↗Quarterly report

142 filings on record, the oldest from Feb 29, 24.

Listing the 25 most recent filings of the 142 on record.

8-Ks, explained

Structure8Governance3
  • Jul 16, 26StructureEntered a material agreement+4 more in the same filing8-K 1.01 ↗
  • Apr 1, 25GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Jan 13, 25StructureEntered a material agreement+4 more in the same filing8-K 1.01 ↗
  • May 30, 24StructureEntered a material agreement+7 more in the same filing8-K 1.01 ↗

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13D: stake and stated purpose

Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

  • Perceptive Advisors LLC10.0%Jun 30, 26SCHEDULE 13G/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
  • VIKING GLOBAL INVESTORS LP9.3%Jun 30, 26SCHEDULE 13G/A ↗11 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
  • Morgan Stanley7.9%Dec 31, 25SCHEDULE 13G ↗2 co-filers on this document — the figure is the largest single stake, not their sum.
  • BANK OF AMERICA CORP /DE/5.9%Jun 30, 26SCHEDULE 13G ↗
  • Schonfeld Strategic Advisors LLC5.3%Jun 30, 26SCHEDULE 13G ↗
show one more holderhide

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

Sale intention announced

On Sep 15, MANHARD KIMBERLY filed notice of intent to sell up to $53K.

A notice is not a sale: it may not go ahead, may happen in part, or at a different price.

After the notice, they sold $53K on Sep 15, per their Form 4. That is 100% of the shares announced so far, and the window is still open.

View notice (Form 144) ↗+4 more recent notices · 4 with a later sale

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

Buys and sells

  • Oct 14, 26Buy$208KMark LappeChief Executive Officer↗
  • Oct 14, 26Buy$210KMark LappeChief Executive Officer↗
  • Oct 14, 26Buy$9KMark LappeChief Executive Officer↗
  • Oct 14, 26Buy$206KMark LappeChief Executive Officer↗
  • Oct 14, 26Buy$208KMark LappeChief Executive Officer↗
  • Oct 14, 26Buy$9KMark LappeChief Executive Officer↗
  • Sep 28, 26Buy$148KMark LappeChief Executive Officer↗
  • Sep 28, 26Buy$305KMark LappeChief Executive Officer↗
  • Sep 25, 26Buy$329KMark LappeChief Executive Officer↗
  • Sep 25, 26Buy$217KMark LappeChief Executive Officer↗
  • Sep 23, 26Buy$500KJon Faiz Kayyem↗
  • Sep 16, 26Buy$500KJon Faiz Kayyem↗

There are 23 more transactions in this stretch.

Stock compensation, tax and giftsshow the 5 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Mar 27, 25Giftamount n/aJon Faiz Kayyem↗
  • Dec 16, 24Giftamount n/aJon Faiz Kayyem↗
  • Dec 16, 24Giftamount n/aJon Faiz Kayyem↗
  • Dec 16, 24Giftamount n/aJon Faiz Kayyem↗
  • Dec 6, 24Giftamount n/aJon Faiz Kayyem↗

The full record holds 75 transactions and goes back to May 24, 24.

Its sector and its market

Inhibrx Biosciences, Inc. among Health Care companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
Series with incidents in the period; the chart shows what could be kept.
SEC records
142 documents on file, from Feb 29, 2024 to Oct 14, 2026.
Company description
No description available.
This page
Generated on Oct 19, 2026; refreshed through the day.

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No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.

Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

Why does a European company show no SEC records?

It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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