INBX — 3 insiders, all buying

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

Inhibrx Biosciences, Inc. · Materials · ISO week 2026-W37 (2026-09-08 → 2026-09-08)

WATCH + all buys · clu-69cd512dc4cf · detected 2026-09-09

3Distinct insiders

8Transactions

+$3.5MTotal reported value

3Source filings

Members

Insider	Role	Txns	Reported value
Lappe Mark	Chief Executive Officer	6	$2.6M
Kayyem Jon Faiz	Director	1	$568k
FORSYTH DOUGLAS	Director	1	$287k

+ Lappe Mark Chief Executive Officer P 5,895 sh @ $99.29 = $585k 0001366074-26-000002
+ Lappe Mark Chief Executive Officer P 6,605 sh @ $100.64 = $665k 0001366074-26-000002
+ Lappe Mark Chief Executive Officer P 1,100 sh @ $107.12 = $118k 0001366074-26-000002
+ Lappe Mark Chief Executive Officer P 500 sh @ $108.23 = $54k 0001366074-26-000002
+ Lappe Mark Chief Executive Officer P 1,219 sh @ $111.88 = $136k 0001366074-26-000002
+ Lappe Mark Chief Executive Officer P 9,681 sh @ $112.28 = $1.1M 0001366074-26-000002
+ Kayyem Jon Faiz Director P 5,000 sh @ $113.52 = $568k 0001366268-26-000004
+ FORSYTH DOUGLAS Director P 2,500 sh @ $114.65 = $287k 0001240801-26-000004