Inhibrx Biosciences, Inc. - Common Stock, par value $0.0001 per share (INBX)

Q: What does CUSIP 45720N103 represent in this 13F holders report?

CUSIP 45720N103 is the security identifier for INBX - Inhibrx Biosciences, Inc. - Common Stock, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held INBX - Inhibrx Biosciences, Inc. - Common Stock, par value $0.0001 per share in Q1 2026?

134 institutional investors reported INBX - Inhibrx Biosciences, Inc. - Common Stock, par value $0.0001 per share for Q1 2026. Use the holders table for investor-level position and value details.

CUSIP: 45720N103

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class: Equity / Common Stock, par value $0.0001 per share
Total 13F shares: 12,713,962
Total 13F value: $854,579,371
Share change: -220,946
Put/Call ratio: 4.2%
SEC-reported price per share: $67.23
Number of holders: 134
Value change: -$23,513,581
Number of buys: 71
Number of sells: 60
Shares outstanding: 14,630,961

Security key

45720N103

Report period

Q1 2026

Institutions

134

Top holders

INBX full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Previous quarter: Q4 2025 Inhibrx Biosciences, Inc. SEC filings Inhibrx Biosciences, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 45720N103

Newer quarter: Q2 2026 Previous quarter: Q4 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of INBX - Inhibrx Biosciences, Inc. - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

PERCEPTIVE ADVISORS LLC

Disclosed value leader

PERCEPTIVE ADVISORS LLC

Comparable rows

15/15

Latest evidence

31 Dec 2025

13F 13D/G 3/4/5 Lead comparable stake: 10% 13D/G row: PERCEPTIVE ADVISORS LLC Showing 1-6 of 15 holder rows.

Quick read

PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 10%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens PERCEPTIVE ADVISORS LLC's linked filing trail.

Comparable ownership Top 5

PERCEPTIVE ADVISORS LLC 10%

VIKING GLOBAL INVESTORS LP 10%

MORGAN STANLEY 7.9%

Jon Faiz Kayyem 7.9%

Mark P. Lappe 6.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
PERCEPTIVE ADVISORS LLC	13F 13D/G Company 13F 13D/G	10% from 13D/G	$114,763,853 1,452,707 shares	—	31 Dec 2025
VIKING GLOBAL INVESTORS LP	13F 13D/G 3/4/5 Company · 10%+ Owner 13F 13D/G 3/4/5	10% from 13D/G	$113,578,695 1,437,705 shares	—	31 Dec 2025
MORGAN STANLEY	13F 13D/G Company 13F 13D/G	7.9% from 13D/G	$92,250,538 1,167,728 shares	—	31 Dec 2025
Jon Faiz Kayyem	13D/G 13D/G	7.9%	$13,765,571 1,149,046 shares	$0	03 Jun 2024
Mark P. Lappe	3/4/5 13D/G Chief Executive Officer, Director · Mark Lappe 3/4/5 13D/G	6.4% from 13D/G	$15,852,324 1,225,413 shares mixed-class rows	—	12 Sep 2024
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	5.3% from 13D/G	$61,413,257 777,383 shares	—	31 Dec 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

134

12,713,962

Rows available

134

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

139

Q1 2026 holders

134

Holder diff

-5

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend