Lappe Mark Insider Trades & Stock Holdings

Chief Executive Officer · Inhibrx Biosciences, Inc. · Latest filing Oct 14, 2026

Lappe Mark, Chief Executive Officer at Inhibrx Biosciences, Inc. has 3 Form 4 trades on file since Sep 25, 2026. Open-market activity: 3 purchases ($1.85M) and 0 sales ($0), net +$1.85M. Latest filing: acquired 10.04K shares of $INBX on Oct 14, 2026 at $84.56.

Trades on file

3

Open-market bought

$1.85M

Open-market sold

$0

Net open-market

+$1.85M

Latest filing

Oct 14, 2026

All insider trades by Lappe Mark

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 14, 2026	$INBX	Buy (Open-market buy)	10.04K	$84.56	$848.98K						Chief Executive Officer		Read
Sep 28, 2026	$INBX	Buy (Open-market buy)	4.50K	$100.76	$453.43K			-7.0%			Chief Executive Officer		—
Sep 25, 2026	$INBX	Buy (Open-market buy)	5.50K	$99.16	$545.36K			-2.6%			Chief Executive Officer		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Lappe Mark traded

• $INBX

Frequently asked questions

Has Lappe Mark been buying or selling stock?

Lappe Mark has 3 open-market purchases and 0 open-market sales on file, net +$1.85M. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Lappe Mark's latest insider trade?

acquired 10.04K shares of $INBX on Oct 14, 2026 at $84.56.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.