OmniAb (OABI)
Provides antibody-discovery technologies that feed partner drug programs and royalty economics.
$4.80
vs last close+0.21 (+4.69%)
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13F · 13D/G · Form 4
| Institutions | 41.10% | 59.76M shares | |
|---|---|---|---|
| 135 holders · as of Jun 30, 2026 | |||
| Insiders | 5.85% | 8.50M shares | |
| 9 holders · as of Jun 18, 2026 | |||
| Other | 53.05% | 77.13M shares | |
| remainder | |||
145.39M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
135 holders · 59.76M shares · 22 new positions · 80 increased · 33 reduced · 17 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Whitefort Capital Management, LP | 10.25M | 7.05% | −3.98M | Aug 14, 2026 |
| BlackRock, Inc. | 8.90M | 6.12% | +790.6K | Aug 7, 2026 |
| Nomura Holdings Inc | 5.03M | 3.46% | +4.32M | Aug 14, 2026 |
| Cadian Capital Management, LP | 4.21M | 2.90% | +54.7K | Aug 14, 2026 |
| Vanguard Capital Management LLC | 3.85M | 2.65% | −141.3K | Aug 13, 2026 |
| Geode Capital Management, LLC | 2.88M | 1.98% | −41.6K | Aug 12, 2026 |
| Rice Hall James & Associates, LLC | 2.61M | 1.80% | +63.2K | Aug 7, 2026 |
| Private Management Group Inc | 2.34M | 1.61% | −84.4K | Jul 31, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Whitefort Capital Management, LP | 9.90% | 14.22M | 13G | Nov 14, 2025 |
| Ash X LP | 5.30% | 7.56M | 13G | Feb 10, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Apr 7, 2026 | Charles S. Berkmanofficer: Chief Legal Officer | Sale | 7,157 | $1.49 | 399,085 |
| Apr 7, 2026 | Kurt A. Gustafsonofficer: Executive VP, Finance and CFO | Sale | 6,913 | $1.49 | 261,483 |
| Apr 7, 2026 | Matthew W. Foehrdirector, officer: President and CEO | Sale | 19,244 | $1.49 | 4,420,492 |
| Feb 18, 2026 | Matthew W. Foehrdirector, officer: President and CEO | Sale | 30,843 | $1.71 | 4,403,277 |
| Feb 18, 2026 | Kurt A. Gustafsonofficer: Executive VP, Finance and CFO | Sale | 9,301 | $1.71 | 268,851 |
| Feb 18, 2026 | Charles S. Berkmanofficer: Chief Legal Officer | Sale | 9,673 | $1.71 | 392,700 |
| Feb 17, 2026 | Charles S. Berkmanofficer: Chief Legal Officer | Sale | 6,990 | $1.70 | 383,623 |
| Feb 17, 2026 | Kurt A. Gustafsonofficer: Executive VP, Finance and CFO | Sale | 6,828 | $1.70 | 259,402 |
| Feb 17, 2026 | Matthew W. Foehrdirector, officer: President and CEO | Sale | 20,754 | $1.70 | 4,375,787 |
| Dec 8, 2025 | Matthew W. Foehrdirector, officer: President and CEO | Sale | 13,666 | $1.96 | 4,360,083 |
House and Senate disclosures
Not reported.