Puma Biotechnology (PBYI)
Commercializes NERLYNX for HER2-positive breast cancer and develops alisertib.
$9.69
Pre-market−0.01 (−0.05%)
At close$9.70(+3.69%)
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Breakdown13F · 13D/G · Form 4
| Institutions159 holders · as of Mar 31, 2026 · largest filers plus last quarter's tail | ≈ 73.10% | 37.74M shares | |
| Insiders12 holders · as of Jul 8, 2026 | 21.48% | 11.09M shares | |
| Otherremainder | ≈ 5.42% | 2.80M shares |
51.62M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
Institutions13F, as of Mar 31, 2026
159 holders · 37.74M shares · 28 new positions · 91 increased · 38 reduced · 23 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Acorn Capital Advisors, LLC | 4.13M | 8.00% | 0 | May 15, 2026 |
| BlackRock, Inc. | 3.60M | 6.97% | −43.6K | May 13, 2026 |
| Acadian Asset Management LLC | 2.04M | 3.96% | +16.9K | May 13, 2026 |
| Renaissance Technologies LLC | 1.94M | 3.76% | −181.4K | May 14, 2026 |
| American Century Companies Inc | 1.92M | 3.71% | +266.2K | May 15, 2026 |
| Vanguard Capital Management LLC | 1.82M | 3.52% | +1.82Mnew | May 15, 2026 |
| Vanguard Portfolio Management LLC | 1.73M | 3.36% | +1.73Mnew | May 8, 2026 |
| Millennium Management LLC | 1.48M | 2.86% | +1.46M | May 15, 2026 |
Ownership statements13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 7.80% | 3.83M | Nov 8, 2024 ↗ |
Insider tradesForm 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| 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 |
| Jan 7, 2026 | Maximo F. Nouguesofficer: Chief Financial Officer | Sale | 6,405 | $5.88 | 193,284 |
| Jan 6, 2026 | Maximo F. Nouguesofficer: Chief Financial Officer | Sale | 4,540 | $5.84 | 199,689 |
CongressHouse and Senate disclosures
Not reported.