LAPPE MARK (Chief Executive Officer) purchased 3.5% of their position (25K shares) of INHIBRX BIOSCIENCES, INC. on the open market
Open‑market purchase worth $2.65M — a small addition. The strongest form of insider conviction signal.
P · 6 purchases
Filed: 9/8/2026ACC: 0001366074-26-000002
DirectorOfficer· Chief Executive Officer
Since May 2024
+25K
Net shares
Net buyer
$2.65M
Total acquired
6
Open market trades
6B · 0S
6
Total transactions
25K acquired
Non-Derivative Transactions6
Common Stock
Indirect
Shares
+5.89K
Price / share
$99.29
Trade value
$585.34K
% of position
0.8%
9/8/2026
705.55K→711.44K
Common Stock
Indirect
Shares
+6.61K
Price / share
$100.64
Trade value
$664.72K
% of position
0.9%
9/8/2026
711.44K→718.05K
Common Stock
Indirect
Shares
+1.10K
Price / share
$107.12
Trade value
$117.84K
% of position
0.2%
9/8/2026
718.05K→719.15K
Common Stock
Indirect
Shares
+500.00
Price / share
$108.23
Trade value
$54.12K
% of position
0.1%
9/8/2026
719.15K→719.65K
Common Stock
Indirect
Shares
+1.22K
Price / share
$111.88
Trade value
$136.38K
% of position
0.2%
9/8/2026
719.65K→720.87K
Common Stock
Indirect
Shares
+9.68K
Price / share
$112.28
Trade value
$1.09M
% of position
1.3%
9/8/2026
720.87K→730.55K
Total
Net shares
+25K
Net value
$2.65M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Indirect | 9/8/2026 | P · Purchase | +5.89K | $99.29 | $585.34K | 0.8% | 705.55K | 711.44K |
| Common Stock Indirect | 9/8/2026 | P · Purchase | +6.61K | $100.64 | $664.72K | 0.9% | 711.44K | 718.05K |
| Common Stock Indirect | 9/8/2026 | P · Purchase | +1.10K | $107.12 | $117.84K | 0.2% | 718.05K | 719.15K |
| Common Stock Indirect | 9/8/2026 | P · Purchase | +500.00 | $108.23 | $54.12K | 0.1% | 719.15K | 719.65K |
| Common Stock Indirect | 9/8/2026 | P · Purchase | +1.22K | $111.88 | $136.38K | 0.2% | 719.65K | 720.87K |
| Common Stock Indirect | 9/8/2026 | P · Purchase | +9.68K | $112.28 | $1.09M | 1.3% | 720.87K | 730.55K |
| Total | +25K | $2.65M | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Common Stock
IndirectShares owned165K
Common Stock
IndirectShares owned54.87K
Total
219.87K indirect219.87K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 165K | Indirect |
| Common Stock | 54.87K | Indirect |
| Total | 219.87K | 219.87K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported