PBYI · Insider Trading

PUMA BIOTECHNOLOGY INC

Every open-market purchase and sale reported by PBYI officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
28
code S
Reporting Insiders
11
current holders
PBYI — Recent Form 4 Transactions (latest 2026-09-16)
FiledInsiderRole TypeSharesValue
2026-09-16 Troy Edward Wilson Director Sell −5,000 −$45.50K
2026-09-16 Alessandra Cesano Director MIXED −12,150 −$420.49K
2026-07-08 Douglas M Hunt See Remarks Sell −8,460 −$69.90K
2026-07-08 Maximo F Nougues Chief Financial Officer Sell −9,386 −$77.56K
2026-07-08 Alan H Auerbach President and CEO Sell −44,058 −$364.05K
2026-06-15 Alessandra Cesano Director A +27,000 —
2026-06-15 Jay M Moyes Director MIXED +5,000 −$158.80K
2026-06-15 Adrian Senderowicz Director MIXED — −$194.31K
2026-06-15 Allison Dorval Director MIXED +15,390 −$83.58K
2026-06-15 Michael Patrick Miller Director A +27,000 —
2026-06-15 Troy Edward Wilson Director MIXED +16,200 −$77.75K
2026-06-15 Brian M Stuglik Director MIXED +18,900 −$58.31K
2026-02-20 Douglas M Hunt See Remarks A +49,394 —
2026-02-20 Alan H Auerbach President and CEO A +159,778 —
2026-02-20 Maximo F Nougues Chief Financial Officer A +46,739 —
2026-01-08 Douglas M Hunt See Remarks Sell −8,987 −$52.70K
2026-01-08 Maximo F Nougues Chief Financial Officer Sell −10,945 −$64.19K
2026-01-08 Alan H Auerbach President and CEO Sell −34,950 −$204.88K
2025-11-13 Michael Patrick Miller Director Sell −20,000 −$97.23K
2025-07-22 Alessandra Cesano Director Sell −27,000 −$90.91K
2025-07-10 Douglas M Hunt See Remarks Sell −7,817 −$27.62K
2025-07-10 Alan H Auerbach President and CEO Sell −47,172 −$166.70K
2025-07-10 Maximo F Nougues Chief Financial Officer Sell −9,522 −$33.65K
2025-06-17 Brian M Stuglik Director Sell −8,100 −$27.46K
2025-06-17 Allison Dorval Director Sell −11,610 −$39.47K
2025-06-17 Jay M Moyes Director Sell −22,000 −$74.80K
2025-06-17 Adrian Senderowicz Director Sell −27,000 −$91.80K
2025-06-17 Alessandra Cesano Director Sell −12,150 −$41.31K
2025-06-17 Troy Edward Wilson Director Sell −10,800 −$36.72K
2025-06-13 Brian M Stuglik Director A +27,000 —
2025-06-13 Michael Patrick Miller Director A +27,000 —
2025-06-13 Jay M Moyes Director A +27,000 —
2025-06-13 Alessandra Cesano Director A +27,000 —
2025-06-13 Allison Dorval Director A +27,000 —
2025-06-13 Adrian Senderowicz Director A +27,000 —
2025-06-13 Troy Edward Wilson Director A +27,000 —
2025-02-11 Maximo F Nougues Chief Financial Officer A +61,456 —
2025-02-11 Alan H Auerbach President and CEO A +198,399 —
2025-02-11 Douglas M Hunt See Remarks A +48,117 —
2025-02-11 Jeffrey Jerome Ludwig Chief Commercial Officer A +47,841 —
2025-01-03 Alan H Auerbach President and CEO Sell −33,841 −$106.66K
2025-01-03 Jeffrey Jerome Ludwig Chief Commercial Officer Sell −9,437 −$29.74K
2025-01-03 Douglas M Hunt See Remarks Sell −8,633 −$27.21K
2025-01-03 Maximo F Nougues Chief Financial Officer Sell −10,227 −$32.23K
2024-08-13 Michael Patrick Miller Director Sell −23,358 −$81.47K
2024-07-18 Douglas M Hunt See Remarks Sell −3,637 −$13.46K
2024-07-18 Jeffrey Jerome Ludwig Chief Commercial Officer Sell −2,598 −$9.62K
2024-07-18 Maximo F Nougues Chief Financial Officer Sell −4,156 −$15.38K
2024-07-18 Alan H Auerbach President and CEO Sell −21,920 −$81.13K
2024-07-02 Alan H Auerbach President and CEO Sell −18,885 −$61.73K
PBYI — Current Insider Holders
InsiderRole Shares HeldValue
Alan H Auerbach President and CEO 7,261,671 $76.10M
Maximo F Nougues Chief Financial Officer 230,637 $2.42M
Douglas M Hunt See Remarks 196,841 $2.06M
Jeffrey Jerome Ludwig Chief Commercial Officer 156,792 $1.64M
Brian M Stuglik Director 121,958 $1.28M
Allison Dorval Director 102,390 $1.07M
Michael Patrick Miller Director 81,000 $848.88K
Jay M Moyes Director 58,322 $611.21K
Alessandra Cesano Director 56,700 $594.22K
Troy Edward Wilson Director 55,150 $577.97K
Adrian Senderowicz Director 27,000 $282.96K
PBYI Insider Trading FAQ
Who are the insiders at PBYI?
11 officers, directors and 10%+ beneficial owners currently report holdings in PBYI via SEC Form 4.
Are PBYI insiders buying or selling?
Across the 50 most recent Form 4 filings for PBYI, 0 were open-market purchases (code P) and 28 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is PBYI insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent PBYI filing is dated 2026-09-16.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the PBYI quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.