SEC Form 4 · Updated Daily
PBYI
— PUMA BIOTECHNOLOGY, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| AUERBACH ALAN H | 10%+ Owner · Director · Officer | 7,261,671 | 2026-07-06 | S |
| Gross Phillip | 10%+ Owner | 3,854,302 | 2017-06-08 | S |
| Atchinson Robert | 10%+ Owner | 3,854,302 | 2017-06-08 | S |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 10%+ Owner | 3,854,302 | 2017-06-08 | S |
| Adage Capital Partners, L.P. | 10%+ Owner | 3,854,302 | 2017-06-08 | S |
| Adage Capital Advisors, L.L.C. | 10%+ Owner | 3,854,302 | 2017-06-08 | S |
| NOUGUES MAXIMO F | Officer | 230,637 | 2026-07-06 | S |
| HUNT DOUGLAS M | Officer | 196,841 | 2026-07-06 | S |
| Ludwig Jeffrey Jerome | Officer | 156,792 | 2025-02-07 | A |
| Malley Thomas | Director | 156,551 | 2012-10-24 | P |
| Wong Alvin F | Officer | 141,241 | 2024-02-12 | A |
| Stuglik Brian M | Director | 121,958 | 2026-06-11 | A |
| BRYCE RICHARD PAUL | Officer | 121,662 | 2021-04-05 | S |
| Cesano Alessandra | Director | 118,850 | 2026-09-14 | M |
| Dorval Allison | Director | 102,390 | 2026-06-11 | A |
| MILLER MICHAEL PATRICK | Director | 81,000 | 2026-06-11 | A |
| MOYES JAY M | Director | 80,322 | 2026-06-11 | A |
| WILSON TROY EDWARD | Director | 54,750 | 2026-09-14 | S |
| Senderowicz Adrian | Director | 54,000 | 2026-06-11 | A |
| ZAVRL FRANK | Director | 50,993 | 2020-06-09 | A |
| Miller Ann Calby | Director | 40,732 | 2021-06-15 | A |
| EYLER CHARLES R | Officer | 31,957 | 2019-02-04 | S |
| CHARNAS ROBERT | Reporting Owner | 28,461 | 2017-02-01 | S |
| O'Dowd Hugh | Officer | 25,748 | 2020-06-09 | A |
| Lo Steven | Officer | 19,557 | 2019-07-22 | S |
| MUNJAL KAPIL | Reporting Owner | 0 | 2011-10-04 | D |
| SIDDIQI FARAAZ | Reporting Owner | 0 | 2011-10-04 | D |
| JOHNSON ROBERT ANDREW | Reporting Owner | 0 | 2011-10-04 | D |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-14 | Cesano Alessandra | Option exercise (derivative) | 50,000 | $0.00 | 50,000 |
| 2026-09-14 | Cesano Alessandra | Open-market sale | 62,150 | $9.12 | 56,700 |
| 2026-09-14 | Cesano Alessandra | Option exercise | 50,000 | $2.93 | 118,850 |
| 2026-09-14 | WILSON TROY EDWARD | Open-market sale | 5,000 | $9.10 | 54,750 |
| 2026-07-06 | NOUGUES MAXIMO F | Open-market sale | 9,386 | $8.26 | 230,637 |
| 2026-07-06 | HUNT DOUGLAS M | Open-market sale | 8,460 | $8.26 | 196,841 |
| 2026-07-06 | AUERBACH ALAN H | Open-market sale | 44,058 | $8.26 | 7,261,671 |
| 2026-06-12 | Dorval Allison | Open-market sale | 11,610 | $7.20 | 90,780 |
| 2026-06-12 | MOYES JAY M | Open-market sale | 22,000 | $7.22 | 58,322 |
| 2026-06-12 | Senderowicz Adrian | Open-market sale | 27,000 | $7.20 | 27,000 |
| 2026-06-12 | Stuglik Brian M | Open-market sale | 8,100 | $7.20 | 113,858 |
| 2026-06-12 | WILSON TROY EDWARD | Open-market sale | 10,800 | $7.20 | 59,750 |
| 2026-06-11 | Cesano Alessandra | Grant / award | 27,000 | $0.00 | 68,850 |
| 2026-06-11 | Dorval Allison | Grant / award | 27,000 | $0.00 | 102,390 |
| 2026-06-11 | MOYES JAY M | Grant / award | 27,000 | $0.00 | 80,322 |
| 2026-06-11 | MILLER MICHAEL PATRICK | Grant / award | 27,000 | $0.00 | 81,000 |
| 2026-06-11 | Senderowicz Adrian | Grant / award | 27,000 | $0.00 | 54,000 |
| 2026-06-11 | Stuglik Brian M | Grant / award | 27,000 | $0.00 | 121,958 |
| 2026-06-11 | WILSON TROY EDWARD | Grant / award | 27,000 | $0.00 | 70,550 |
| 2026-02-18 | NOUGUES MAXIMO F | Grant / award (derivative) | 66,541 | $0.00 | 66,541 |
| 2026-02-18 | NOUGUES MAXIMO F | Grant / award | 46,739 | $0.00 | 240,023 |
| 2026-02-18 | HUNT DOUGLAS M | Grant / award (derivative) | 70,321 | $0.00 | 70,321 |
| 2026-02-18 | HUNT DOUGLAS M | Grant / award | 49,394 | $0.00 | 205,301 |
| 2026-02-18 | AUERBACH ALAN H | Grant / award (derivative) | 227,474 | $0.00 | 227,474 |
| 2026-02-18 | AUERBACH ALAN H | Grant / award | 159,778 | $0.00 | 7,305,729 |
| 2026-01-07 | NOUGUES MAXIMO F | Open-market sale | 6,405 | $5.88 | 193,284 |
| 2026-01-07 | HUNT DOUGLAS M | Open-market sale | 5,014 | $5.88 | 155,907 |
| 2026-01-07 | AUERBACH ALAN H | Open-market sale | 18,012 | $5.88 | 7,145,951 |
| 2026-01-06 | NOUGUES MAXIMO F | Open-market sale | 4,540 | $5.84 | 199,689 |
| 2026-01-06 | HUNT DOUGLAS M | Open-market sale | 3,973 | $5.84 | 160,921 |
| 2026-01-06 | AUERBACH ALAN H | Open-market sale | 16,938 | $5.84 | 7,163,963 |
| 2025-11-11 | MILLER MICHAEL PATRICK | Open-market sale | 20,000 | $4.86 | 54,000 |
| 2025-07-18 | Cesano Alessandra | Open-market sale | 27,000 | $3.37 | 41,850 |
| 2025-07-09 | AUERBACH ALAN H | Open-market sale | 21,580 | $3.54 | 7,180,901 |
| 2025-07-09 | HUNT DOUGLAS M | Open-market sale | 3,443 | $3.54 | 164,894 |
| 2025-07-09 | NOUGUES MAXIMO F | Open-market sale | 3,935 | $3.54 | 204,229 |
| 2025-07-08 | AUERBACH ALAN H | Open-market sale | 25,592 | $3.53 | 7,202,481 |
| 2025-07-08 | HUNT DOUGLAS M | Open-market sale | 4,374 | $3.53 | 168,337 |
| 2025-07-08 | NOUGUES MAXIMO F | Open-market sale | 5,587 | $3.53 | 208,164 |
| 2025-06-13 | Cesano Alessandra | Open-market sale | 12,150 | $3.40 | 68,850 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.