Transaction · 0001366268-26-000011

Kayyem Jon Faiz

Kayyem Jon Faiz, DIR, reported an open-market or private purchase at Inhibrx Biosciences, Inc. involving 5000.000000 shares for an estimated $500000.00. Reported holdings after the transaction were 434360.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PDIR
INBXInhibrx Biosciences, Inc.
Trade date
Sep 23, 2026
Filing date
Sep 23, 2026
View on SEC Insider profile
Estimated value$500kShares × reported price
Shares traded5.00k$100.00 per share
Holdings after434kIndirect · By The Jon F. Kayyem and Paige Gates-Kayyem Family Trust
% of reported position traded1.16%This security and ownership context
How reported position traded is calculated

Shares purchased ÷ (holdings after − shares purchased). Estimated position before: 429,360 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

INBX price since this filing

Daily closing prices, with the filing date and available return windows
INBX · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago +1.4%1d ago +10.3%
Returns since7d -0.2%30d -3.2%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Buy
Code P
Identifier
0001366268-26-000011
Common Stock
Transaction date
Sep 23, 2026
Filed Sep 23, 2026, 08:59 PM · 0d delay
Shares
5,000 sh
$100.00 per share
Estimated value
$500k
Computed from shares × price
Holdings after
434,360 sh
Indirect · By The Jon F. Kayyem and Paige Gates-Kayyem Family Trust

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Director Buy Repeat Buyer
Filing-only score

+30 points

Compact filing score computed from stored Form 4 facts. Version v1.

Strong filing signal

This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.

How this score is calculated
  • open_market_purchase+12 points

    transaction_code = P

    Code P is a discretionary open-market purchase.
  • director_buy+6 points

    is_director = true

    Director open-market purchase.
  • repeat_buyer+8 points

    repeat-buyer signal matched

    Same insider bought again within the configured window.
  • timely_filing+4 points

    reporting_delay_days = 0

    Filing reported within two business days of the transaction.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    These securities are directly owned by The Jon F. Kayyem and Paige Gates-Kayyem Family Trust. Jon Faiz Kayyem is the trustee of The Jon Faiz Kayyem and Paige N. Gates Family Trust and he disclaims ben…

  2. F2

    These securities are directly owned by the Jon Faiz Kayyem Revocable Trust, of which Jon Faiz Kayyem is the trustee.

  3. F3

    These securities are directly owned by the Paige-Gates Kayyem Revocable Trust, of which Jon Faiz Kayyem's spouse is the trustee.

  4. F4

    These securities are directly owned by a custodial account managed by the reporting person for the benefit of the reporting person's minor child, Child A. The reporting person disclaims beneficial own…

  5. F5

    These securities are directly owned by a custodial account managed by the reporting person for the benefit of the reporting person's minor child, Child B. The reporting person disclaims beneficial own…

Original filing · 0001366268-26-000011
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