Inhibrx Biosciences
Develops biologic drug candidates led by ozekibart and INBRX-106.
$123.41
After-hours close−0.23 (−0.19%)
At close$123.64(−0.23%)
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Breakdown13F · Form 4
Institutions 102.83%Insiders 2.86%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 14.67M · Float 10.87M · 74.1% free float
Institutions13F, as of Jun 30, 2026
178 holders · 15.09M shares · 53 new positions · 109 increased · 42 reduced · 22 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Morgan Stanley | 1.31M | 8.92% | +45.0K | Aug 13, 2026 |
| Perceptive Advisors LLC | 1.30M | 8.85% | −144.9K | Aug 14, 2026 |
| Sanofi | 1.16M | 7.89% | 0 | Jul 28, 2026 |
| Viking Global Investors LP | 1.12M | 7.66% | −313.8K | Aug 14, 2026 |
| Hightower Advisors, LLC | 870.6K | 5.93% | +351 | Aug 5, 2026 |
| Bank of America Corp /DE/ | 841.1K | 5.73% | +808.5K | Aug 14, 2026 |
| BlackRock, Inc. | 826.0K | 5.63% | +27.1K | Aug 7, 2026 |
| Schonfeld Strategic Advisors LLC | 697.6K | 4.75% | +442.8K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Perceptive Advisors LLC | 9.99% | 1.46M | 13G | May 15, 2026 ↗ |
| Viking Global Investors LP | 9.99% | 1.46M | 13G | May 15, 2026 ↗ |
| Perceptive Life Sciences Master Fund, Ltd.incl. Joseph Edelman, Perceptive Advisors LLC | 9.90% | 1.49M | 13G | Nov 14, 2024 ↗ |
| Morgan Stanley | 7.90% | 1.16M | 13G | Feb 11, 2026 ↗ |
| Jon Faiz Kayyemincl. The Jon F. Kayyem and Paige Gates-Kayyem Family Trust | 7.90% | 1.15M | 13D | Feb 26, 2025 ↗ |
| Mark Lappe | 6.40% | 925.4K | 13D | Feb 26, 2025 ↗ |
| Bank of America Corp /DE/ | 5.90% | 857.3K | 13G | Aug 3, 2026 ↗ |
| Schonfeld Strategic Advisors LLC | 5.33% | 781.7K | 13G | Aug 14, 2026 ↗ |
| BlackRock, Inc. | 5.30% | 768.1K | 13G | Jan 21, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Jon Faiz Kayyem | director | 419.4K | 2.86% | Mar 28, 2025 |
| Viking Global Investors LP | 10 percent owner | 67.0K | 0.46% | Oct 9, 2025 |
4 ten-percent owners hold 6.10M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 7 people have not refiled in the last 18 months (3.74M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Oct 7, 2025 | Viking Global Investors LP10 percent owner | Sale · 3 lots | 350,000 | $32.25 | 67,018 |
CongressHouse and Senate disclosures
Not reported.