SpaceX~$1TSpaceX~$1T
Insider Buying
Subscribe
All stock lists
INBX

Inhibrx Biosciences, Inc. (NASDAQ:INBX)

US · Delayed Price · Currency is USD
Healthcare · Biotechnology
90.59-0.02 (-0.02%)
 
Market cap
$1.33B
Insider Score
Health Score
Analyst consensus
Listed since
May 29, 2024
Market Cap1.33B+16.4%
Revenue (ttm)0-100.0%
Net Income-138.18M+15.6%
EPS-8.88+17.8%
Shares Out14.72M
PE Ration/a
Forward PEn/a
Dividendn/a
Ex-Dividend DateMay 30, 2024
Volume165,638
Open92.38
Previous Close90.61
Day's Range89.24 - 93.48
52-Week Range57.30 - 155.29
Beta4.04
AnalystsBuy
Price Target285.00(+214.60%)
Earnings DateNov 13, 2026

About INBX

Inhibrx Biosciences, Inc. is a clinical-stage biopharmaceutical company, which includes a pipeline of novel biologic therapeutic candidates, developed using proprietary modular protein engineering platforms. Its clinical pipeline of therapeutic candidates includes INBRX-109 and INBRX-106, both of which utilize multivalent formats where the precise valency can be optimized in a target-centric way to mediate what is believed to be the most appropriate agonist function. The company was founded by Brendan P. Eckelman on January 8, 2024 and is headquartered in La Jolla, CA.

Address
11025 North Torrey Pines Road, La Jolla, CA, 92037, US
Market Cap
1.33 billion
Employees
110
Industrial Classification
Biotechnology

Inhibrx Biosciences, Inc. Stock Analysis — InsiderScore

Insider Score
See top-rated InsiderScore stocks ›
98th Percentile Overall Score
INBX InsiderScore:98 / 99

Inhibrx Biosciences, Inc. scored higher than 98% of companies evaluated by InsiderBuying, and ranked 2nd out of 95 stocks in the biotech sector.

Scores are percentile-ranked against every company we scored that day, with extra weight given to the size and conviction of each purchase and the seniority of the buyer.

Dollars Committed

Insiders at Inhibrx Biosciences, Inc. bought $6.35 million of stock across 20 purchases in the last 90 days, the largest of them $1.09 million.

Stake Increase

The average purchase added about 1% to the buyer's existing holding. Doubling a stake earns full marks here; topping up an already large position earns very little.

New Positions

Every buyer already held stock, so each purchase is an increase rather than a first position.

This category carries 35% of the Insider Score.

What Are Insiders Doing?

Open-market buy / sell balanceNet Selling
Sold
$11.57M
Bought
$6.35M

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

Financial Health Score
Fair
From INBX’s reported statements · Q2 2026 (trailing 12 months) · 3 of 5 pillars

Next catalysts

1 Day
-0.02%
5 Days
+12.28%
1 Month
-4.65%
6 Months
-28.99%
1 Year
+16.38%

$INBX stock is featured in our Insider Score Rankings, and Insider Trades datasets.

→ All Stock Lists

Recently reported changes in INBX holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

View all institutional owners →

Insider Trading

Quarterly net insider trading by INBX's directors and management

Net Shares Purchased by Insiders−400k−200k02025Q42026Q12026Q22026Q32026Q4

Source: SEC EDGAR (Form 4)

Corporate Lobbying

INBX Estimated quarterly lobbying spending

Source: U.S. Senate LDA

U.S. Patents

New INBX patent grants

Loading patent grants…

Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to INBX from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in INBX

VTIVanguard Morningstar Total Stock Market ETF$41.53M
XBIState Street SPDR S&P Biotech ETF$30.57M
IWMiShares Russell 2000 ETF$22.62M
VXFVanguard Extended Market ETF$11.05M
IBBiShares Biotechnology ETF$7.70M
IWOiShares Russell 2000 Growth ETF$6.61M

Estimated from each fund’s disclosed top holdings × AUM

Bull Case vs Bear Case

AI-generated from INBX’s recent data — informational, not investment advice

Generating analysis…

What’s Behind the Score

Insider Activity
60% of score
97.12
Analyst Ratings
40% of score
60
News & Sentiment
No data yet
—

Recent Insider Activity

Buys
20
Sells
8
Buy Value
$6.35M
Distinct Buyers
3

Insider Score Trend Over Time

+0.9 since Sep 9
0255075100Sep 9 — Insider Score 97.5Sep 10 — Insider Score 97.3Sep 11 — Insider Score 97.2Sep 12 — Insider Score 97.1Sep 13 — Insider Score 97.1Sep 14 — Insider Score 97.2Sep 15 — Insider Score 97.0Sep 16 — Insider Score 96.8Sep 17 — Insider Score 96.9Sep 18 — Insider Score 97.1Sep 19 — Insider Score 96.8Sep 20 — Insider Score 96.8Sep 21 — Insider Score 96.8Sep 22 — Insider Score 96.6Sep 23 — Insider Score 96.5Sep 24 — Insider Score 97.0Sep 25 — Insider Score 97.9Sep 26 — Insider Score 97.9Sep 27 — Insider Score 97.9Sep 28 — Insider Score 97.9Sep 29 — Insider Score 98.6Sep 30 — Insider Score 98.6Oct 1 — Insider Score 98.3Oct 2 — Insider Score 53.0Oct 3 — Insider Score 98.3Oct 4 — Insider Score 98.2Oct 5 — Insider Score 98.2Oct 6 — Insider Score 98.2Oct 7 — Insider Score 98.2Oct 8 — Insider Score 98.2Oct 9 — Insider Score 98.1Oct 10 — Insider Score 98.1Oct 11 — Insider Score 98.1Oct 12 — Insider Score 98.1Oct 13 — Insider Score 98.1Oct 14 — Insider Score 98.5Oct 15 — Insider Score 98.5Oct 16 — Insider Score 98.5Oct 17 — Insider Score 98.5Oct 18 — Insider Score 98.5Oct 19 — Insider Score 98.5Oct 20 — Insider Score 98.5Oct 21 — Insider Score 98.5Oct 22 — Insider Score 98.6Oct 23 — Insider Score 98.5Oct 24 — Insider Score 98.5Oct 25 — Insider Score 98.5Oct 26 — Insider Score 98.5Oct 27 — Insider Score 98.5Oct 28 — Insider Score 98.5Oct 29 — Insider Score 98.5Oct 30 — Insider Score 98.5Oct 31 — Insider Score 98.5Nov 1 — Insider Score 98.5Nov 2 — Insider Score 98.4Nov 3 — Insider Score 98.4Nov 4 — Insider Score 98.3Sep 9Oct 7Nov 4

Composite Insider Score (0–100) recomputed on each scoring run from live SEC Form 4 data.

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.