Insider trading · Q3 2026 · CIK 2007919

Inhibrx Biosciences, Inc. (INBX) insider trading.

Name: Inhibrx Biosciences, Inc. insider transactions, Q3 2026
Creator: U.S. Securities and Exchange Commission

In Q3 2026, insiders at Inhibrx Biosciences, Inc. reported 19 non-derivative transactions on 12 Forms 3, 4 and 5: 14 open-market purchases worth $5.5M and 5 sales worth $279K.

Transactions: 19
Purchases (P): 14
Sales (S): 5
Net shares, P minus S: 50,000
Insiders: 4
Last filed: 2026-09-28

Insiders

Insider	Relationship	Transactions	Buys	Sales
Lappe Mark	Director, Officer · Chief Executive Officer	10	10	0
Manhard Kimberly	Director	5	0	5
Kayyem Jon Faiz	Director	3	3	0
Forsyth Douglas	Director	1	1	0

Transactions

19 non-derivative rows, newest transaction first. Shares and prices as filed.
Date	Insider	Code	Shares	Price	Owned after	Filing
2026-09-28	Lappe Mark	P (A)	1,500	$98.88	737,548	Form 4
2026-09-28	Lappe Mark	P (A)	3,000	$101.7	740,548	Form 4
2026-09-25	Lappe Mark	P (A)	3,324	$98.87	733,872	Form 4
2026-09-25	Lappe Mark	P (A)	2,176	$99.6	736,048	Form 4
2026-09-23	Kayyem Jon Faiz	P (A)	5,000	$100	434,360	Form 4
2026-09-16	Kayyem Jon Faiz	P (A)	5,000	$100	429,360	Form 4
2026-09-15	Manhard Kimberly	S (D)	500	$105.05	7,500	Form 4
2026-09-14	Manhard Kimberly	S (D)	500	$110.26	8,000	Form 4
2026-09-11	Manhard Kimberly	S (D)	500	$111.78	8,500	Form 4
2026-09-09	Manhard Kimberly	S (D)	500	$115.8	9,000	Form 4
2026-09-08	Manhard Kimberly	S (D)	500	$115.14	9,500	Form 4
2026-09-08	Forsyth Douglas	P (A)	2,500	$114.65	227,064	Form 4
2026-09-08	Lappe Mark	P (A)	500	$108.24	719,648	Form 4
2026-09-08	Lappe Mark	P (A)	9,681	$112.28	730,548	Form 4
2026-09-08	Lappe Mark	P (A)	1,219	$111.88	720,867	Form 4
2026-09-08	Lappe Mark	P (A)	5,895	$99.29	711,443	Form 4
2026-09-08	Lappe Mark	P (A)	6,605	$100.64	718,048	Form 4
2026-09-08	Lappe Mark	P (A)	1,100	$107.12	719,148	Form 4
2026-09-08	Kayyem Jon Faiz	P (A)	5,000	$113.52	424,360	Form 4

Transaction codes in this quarter

P: 14 S: 5

Get INBX insider transactions through the API

Request with your API key

curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=2007919&limit=100" \
  -H "Authorization: Bearer $SEC_API_KEY"

Insider trading API guide · INBX company page · Inhibrx Biosciences, Inc. on SEC.gov

Questions

Are insiders buying or selling Inhibrx Biosciences, Inc. (INBX)?

In Q3 2026, insiders at Inhibrx Biosciences, Inc. reported 19 non-derivative transactions on 12 Forms 3, 4 and 5: 14 open-market purchases worth $5.5M and 5 sales worth $279K. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.

Where do these Inhibrx Biosciences, Inc. insider trades come from?

From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.

Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.

Plain-text version for agents and LLMs: /insider-trading/inbx.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.