Lappe Mark's Form 4 filing
Inhibrx Biosciences, Inc. (INBX) · filed Sep 8, 2026
- Accession no.
- 0001366074-26-000002
- Filed
- Sep 8, 2026, 4:04 PM ET
- Trade date
- Sep 8, 2026
- Filing delay
- Same day
- Rule 10b5-1 plan
- Not checked
This filing lists 6 non-derivative transactions. Open-market purchases total $2.65M. It was filed on the trade date.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Lappe MarkCIK 0001366074 | Director, Officer (Chief Executive Officer) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +5,895 | $99.29F1 | +$585,342.85 | 711,443 | Indirect | |
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +6,605 | $100.64F3 | +$664,719.27 | 718,048 | Indirect | |
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +1,100 | $107.12F4 | +$117,836.29 | 719,148 | Indirect | |
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +500 | $108.24F5 | +$54,117.5 | 719,648 | Indirect | |
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +1,219 | $111.88F6 | +$136,382.33 | 720,867 | Indirect | |
| Sep 8, 2026 | Common Stock | PPurchaseAcquired | +9,681 | $112.28F7 | +$1,087,001.07 | 730,548 | Indirect |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F1
The shares were purchased in multiple transactions at prices ranging from $98.88 to $99.8316 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F3
The shares were purchased in multiple transactions at prices ranging from $100.095 to $100.99 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F4
The shares were purchased in multiple transactions at prices ranging from $106.6225 to $107.57 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F5
The shares were purchased in multiple transactions at prices ranging from $108.05 to $108.66 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F6
The shares were purchased in multiple transactions at prices ranging from $111.15 to $112.07 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.
- F7
The shares were purchased in multiple transactions at prices ranging from $112.15 to $112.44 inclusive. The reported price reflects the weighted-average purchase price. The reporting person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.
Referenced by the price of 1 transaction in Table I.