Puma Biotechnology (PBYI)
Commercializes NERLYNX for HER2-positive breast cancer and develops alisertib.
$9.10
vs last close−0.72 (−7.32%)
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13F · 13D/G · Form 4
| Institutions | 75.18% | 38.81M shares | |
|---|---|---|---|
| 166 holders · as of Jun 30, 2026 | |||
| Insiders | 21.44% | 11.07M shares | |
| 12 holders · as of Sep 16, 2026 | |||
| Other | 3.38% | 1.74M shares | |
| remainder | |||
51.62M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
166 holders · 38.81M shares · 24 new positions · 85 increased · 52 reduced · 18 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Acorn Capital Advisors, LLC | 4.13M | 8.00% | 0 | Aug 14, 2026 |
| BlackRock, Inc. | 3.80M | 7.37% | +205.8K | Aug 7, 2026 |
| American Century Companies Inc | 2.32M | 4.49% | +403.7K | Aug 12, 2026 |
| Acadian Asset Management LLC | 2.05M | 3.98% | +11.8K | Aug 13, 2026 |
| Renaissance Technologies LLC | 1.84M | 3.56% | −106.2K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 1.84M | 3.56% | +18.0K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.83M | 3.54% | +91.0K | Aug 13, 2026 |
| LSV Asset Management | 1.62M | 3.13% | +435.1K | Aug 6, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 7.80% | 3.83M | Nov 8, 2024 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Sep 14, 2026 | Troy Edward Wilsondirector | Sale | 5,000 | $9.10 | 54,750 |
| Sep 14, 2026 | Alessandra Cesanodirector | Sale | 62,150 | $9.12 | 56,700 |
| Jul 6, 2026 | Maximo F. Nouguesofficer: Chief Financial Officer | Sale | 9,386 | $8.26 | 230,637 |
| Jul 6, 2026 | Douglas M. Huntofficer: See Remarks | Sale | 8,460 | $8.26 | 196,841 |
| Jul 6, 2026 | Alan H. Auerbachdirector, 10 percent owner, officer: President and CEO | Sale | 44,058 | $8.26 | 7,261,671 |
| Jun 12, 2026 | Allison Dorvaldirector | Sale | 11,610 | $7.20 | 90,780 |
| Jun 12, 2026 | Jay M. Moyesdirector | Sale | 22,000 | $7.22 | 58,322 |
| Jun 12, 2026 | Adrian Senderowiczdirector | Sale | 27,000 | $7.20 | 27,000 |
| Jun 12, 2026 | Brian M. Stuglikdirector | Sale | 8,100 | $7.20 | 113,858 |
| Jun 12, 2026 | Troy Edward Wilsondirector | Sale | 10,800 | $7.20 | 59,750 |
House and Senate disclosures
Not reported.