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Inhibrx Biosciences, Inc. (INBX) institutional ownership

Latest close $85.00 Jul 23, 2026
Market cap$313M 52-week range SectorHealthcare
Funds holding · Q3 2024
2
reported INBX position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q3 2024
Activity unavailable N/A
0 buyers · 2 sellers

Inhibrx Biosciences, Inc. (INBX) price and institutional activity

Dates

Q3 2024

$0 bought by 0 investors
$0 sold by 2 investors
DekaBank Deutsche GirozentraleOsaic Holdings, Inc.
Bought Sold Totals per quarter; hover a bar for the names.

Inhibrx Biosciences, Inc. (INBX) institutional activity · 2

Investor Type Est. change Change Δ Own Date
DekaBank Deutsche Girozentrale · Exited
Change −26K Δ Own −100.0% Date Q3 2024
DekaBank Deutsche Girozentrale Exited· Q3 2024 −26K −100.0% Q3 2024
Osaic Holdings, Inc. · Exited
Change −7K Δ Own −100.0% Date Q3 2024
Osaic Holdings, Inc. Exited· Q3 2024 −7K −100.0% Q3 2024
Data through Q3 2024 · filed Q3 2024
2 of 2

Famous investor activity in Inhibrx Biosciences, Inc. (INBX)

Inhibrx Biosciences, Inc. (INBX) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Vuori Kristiina Md · Director Grant (A) 15K
Owned 15K Trade date Jun 3, 2026 Filed date Jun 4, 2026
Vuori Kristiina Md Director Grant (A) 15K 15K Jun 3, 2026 Jun 4, 2026
Kayyem Jon Faiz · Director Grant (A) 15K
Owned 15K Trade date Jun 3, 2026 Filed date Jun 4, 2026
Kayyem Jon Faiz Director Grant (A) 15K 15K Jun 3, 2026 Jun 4, 2026
Forsyth Douglas · Director Grant (A) 15K
Owned 15K Trade date Jun 3, 2026 Filed date Jun 4, 2026
Forsyth Douglas Director Grant (A) 15K 15K Jun 3, 2026 Jun 4, 2026
Manhard Kimberly · Director Grant (A) 15K
Owned 15K Trade date Jun 3, 2026 Filed date Jun 4, 2026
Manhard Kimberly Director Grant (A) 15K 15K Jun 3, 2026 Jun 4, 2026
Matly David · Officer Grant (A) 50K
Owned 50K Trade date Apr 24, 2026 Filed date Apr 27, 2026
Matly David Officer Grant (A) 50K 50K Apr 24, 2026 Apr 27, 2026
Viking Global Opportunities Parent Gp LLC · 10% Owner 3 operations −$11M
Price $32.25 Qty −350K Owned 103K Trade date Oct 7, 2025 Filed date Oct 9, 2025
Viking Global Opportunities Parent Gp LLC 10% Owner 3 operations $32.25 −350K −$11M 103K Oct 7, 2025 Oct 9, 2025
6 of 6

Inhibrx Biosciences, Inc. (INBX) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Perceptive Advisors LLC 1.5M
% of shares outstanding 10.0% Filing date May 15, 2026
Perceptive Advisors LLC 1.5M 10.0% May 15, 2026
Viking Global Investors LP 1.5M
% of shares outstanding 10.0% Filing date May 15, 2026
Viking Global Investors LP 1.5M 10.0% May 15, 2026
Sanofi 1.2M
% of shares outstanding 8.0% Filing date May 31, 2024
Sanofi 1.2M 8.0% May 31, 2024
Kayyem Jon Faiz 806K
% of shares outstanding 5.6% Filing date Jun 3, 2024
Kayyem Jon Faiz 806K 5.6% Jun 3, 2024
Lappe Mark 761K
% of shares outstanding 5.3% Filing date Jun 3, 2024
Lappe Mark 761K 5.3% Jun 3, 2024
5 of 5

Inhibrx Biosciences, Inc. (INBX) ownership FAQ

Who owns INBX?

2 reporting institutions disclosed INBX position changes in the Q3 2024 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q3 2024.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.