Puma Biotechnology, Inc. (PBYI) Insider Trading
Over the last 3 months, PBYI insiders made 0 open-market buys and 5 sales, a net sale of -$573K (SEC Form 4). Over the last 6 months, 120 institutions increased and 80 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$572.7K
Insider trades by month Buys Sells
Jan
Jun
Jul
Nov
Jan
Jun
Context3-month price +16.8%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 15, 2026 | Dorval Allisondirector | Grant | 27,000 | — |
| Jun 15, 2026 | MOYES JAY Mdirector | Grant | 27,000 | — |
| Jun 15, 2026 | MOYES JAY Mdirector | Sell | 22,000 | $7.22 |
| Jun 15, 2026 | Stuglik Brian Mdirector | Sell | 8,100 | $7.20 |
| Jun 15, 2026 | Stuglik Brian Mdirector | Grant | 27,000 | — |
| Jun 15, 2026 | WILSON TROY EDWARDdirector | Sell | 10,800 | $7.20 |
| Jun 15, 2026 | Senderowicz Adriandirector | Grant | 27,000 | — |
| Jun 15, 2026 | WILSON TROY EDWARDdirector | Grant | 27,000 | — |
| Jun 15, 2026 | MILLER MICHAEL PATRICKdirector | Grant | 27,000 | — |
| Jun 15, 2026 | Senderowicz Adriandirector | Sell | 27,000 | $7.20 |
| Jun 15, 2026 | Dorval Allisondirector | Sell | 11,610 | $7.20 |
| Jun 15, 2026 | Cesano Alessandradirector | Grant | 27,000 | — |
| Feb 20, 2026 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Grant | 159,778 | — |
| Feb 20, 2026 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Grant | 227,474 | $6.68 |
| Feb 20, 2026 | NOUGUES MAXIMO Fofficer: Chief Financial Officer | Grant | 66,541 | $6.68 |
| Feb 20, 2026 | HUNT DOUGLAS Mofficer: See Remarks | Grant | 70,321 | $6.68 |
| Feb 20, 2026 | HUNT DOUGLAS Mofficer: See Remarks | Grant | 49,394 | — |
| Feb 20, 2026 | NOUGUES MAXIMO Fofficer: Chief Financial Officer | Grant | 46,739 | — |
| Jan 8, 2026 | NOUGUES MAXIMO Fofficer: Chief Financial Officer | Sell | 6,405 | $5.88 |
| Jan 8, 2026 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Sell | 18,012 | $5.88 |
| Jan 8, 2026 | NOUGUES MAXIMO Fofficer: Chief Financial Officer | Sell | 4,540 | $5.84 |
| Jan 8, 2026 | HUNT DOUGLAS Mofficer: See Remarks | Sell | 5,014 | $5.88 |
| Jan 8, 2026 | HUNT DOUGLAS Mofficer: See Remarks | Sell | 3,973 | $5.84 |
| Jan 8, 2026 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Sell | 16,938 | $5.84 |
| Nov 13, 2025 | MILLER MICHAEL PATRICKdirector | Sell | 20,000 | $4.86 |
| Jul 22, 2025 | Cesano Alessandradirector | Sell | 27,000 | $3.37 |
| Jul 10, 2025 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Sell | 21,580 | $3.54 |
| Jul 10, 2025 | AUERBACH ALAN Hdirector, 10 percent owner, officer: President and CEO | Sell | 25,592 | $3.53 |
| Jul 10, 2025 | HUNT DOUGLAS Mofficer: See Remarks | Sell | 3,443 | $3.54 |
| Jul 10, 2025 | HUNT DOUGLAS Mofficer: See Remarks | Sell | 4,374 | $3.53 |
Source: PBYI SEC Form 4 filings, latest Jun 15, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their PBYI positions over the last 6 months (SEC Form 13F).
Increased
120
New positions
58
Reduced
80
Sold out
34
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| ACORN CAPITAL ADVISORS, LLC | Unchanged | 4.1M | May 15, 2026 |
| ACORN CAPITAL ADVISORS, LLC | Unchanged | 4.1M | Feb 17, 2026 |
| VANGUARD GROUP INC | Increased | 3.8M | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 3.6M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 3.6M | May 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 2.1M | Feb 12, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 2.0M | May 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 2.0M | Feb 10, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1.9M | May 14, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 1.9M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.8M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 1.7M | May 8, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 1.7M | Feb 13, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 1.5M | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.4M | May 7, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.