PBYINasdaqPharmaceutical PreparationsFiscal year ends December 31
PUMA BIOTECHNOLOGY, INC.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$10.21+0.38 (+3.87%)
Close on Oct 19, 2026
- Market cap
- $537.01M
- P/E (TTM)
- 19.6
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
74.9%
39M of 52M shares
Institutional holders
161
22 new, 15 sold out
Net institutional buying
1M
In Q2 2026
Insider trades, 12 months
0 buys · 17 sales
Net sold $2.12M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Alan H. Auerbach | 8,648,958 | 16.00% | 13D (active) amendment | Oct 4, 2026 |
| Anders Hove | 3,940,052 | 8.00% | 13G (passive) amendment | Dec 31, 2024 |
| BlackRock, Inc. | 2,779,452 | 5.60% | 13G (passive) amendment | Mar 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of PBYI | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Acorn Capital Advisors, LLC | 4,131,299 | 8.00% | $33.50M | – | 9.14% |
| BlackRock, Inc. | 3,804,736 | 7.37% | $30.86M | +205,784 | 0.00% |
| American Century Companies Inc | 2,319,996 | 4.49% | $18.82M | +403,650 | 0.01% |
| Acadian Asset Management LLC | 2,053,523 | 3.98% | $16.65K | +11,764 | 0.02% |
| Renaissance Technologies LLC | 1,836,213 | 3.56% | $14.89M | −106,200 | 0.02% |
| Vanguard Capital Management LLC | 1,835,643 | 3.56% | $14.89M | +17,962 | 0.00% |
| Vanguard Portfolio Management LLC | 1,825,599 | 3.54% | $14.81M | +90,950 | 0.00% |
| Lsv Asset Management | 1,617,981 | 3.13% | $13.12K | +435,113 | 0.02% |
| Dimensional Fund Advisors LP | 1,518,014 | 2.94% | $12.31M | +81,908 | 0.00% |
| Geode Capital Management, LLC | 1,339,405 | 2.59% | $10.86M | +322,063 | 0.00% |
| O'Shaughnessy Asset Management, LLC | 1,123,783 | 2.18% | $9.11M | −14,386 | 0.04% |
| State Street Corp | 952,165 | 1.84% | $7.72M | +34,575 | 0.00% |
| Kennedy Capital Management LLC | 873,253 | 1.69% | $7.08M | −16,348 | 0.13% |
| Bridgeway Capital Management, LLC | 791,616 | 1.53% | $6.42M | +16,275 | 0.11% |
| Ritholtz Wealth Management | 749,798 | 1.45% | $6.08M | −24,510 | 0.09% |
| Aqr Capital Management LLC | 725,192 | 1.40% | $5.88M | −75,002 | 0.00% |
| Goldman Sachs Group Inc | 669,156 | 1.30% | $5.43M | −563 | 0.00% |
| Northern Trust Corp | 652,386 | 1.26% | $5.29M | +10,633 | 0.00% |
| Connor, Clark & Lunn Investment Management Ltd. | 642,946 | 1.25% | $5.21M | −139,852 | 0.01% |
| UBS Group AG | 636,761 | 1.23% | $5.16M | +102,534 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 161 | 39M | 74.9% | 22 / 60 | 52 / 15 | 3M | 2M |
| Q1 2026 | 157 | 38M | 73.3% | 29 / 61 | 38 / 18 | 8M | 2M |
| Q4 2025 | 151 | 35M | 68.5% | 33 / 51 | 39 / 14 | 4M | 3M |
| Q3 2025 | 132 | 34M | 66.6% | 23 / 44 | 35 / 12 | 5M | 3M |
| Q2 2025 | 121 | 33M | 63.7% | 22 / 42 | 32 / 16 | 5M | 2M |
| Q1 2025 | 116 | 30M | 58.9% | 25 / 44 | 25 / 20 | 3M | 2M |
| Q4 2024 | 112 | 30M | 57.2% | 28 / 46 | 21 / 15 | 6M | 5M |
| Q3 2024 | 100 | 30M | 57.7% | 19 / 33 | 23 / 17 | 6M | 4M |
| Q2 2024 | 99 | 31M | 60.0% | 26 / 33 | 26 / 20 | 6M | 6M |
| Q1 2024 | 93 | 31M | 60.1% | 20 / 36 | 26 / 9 | 8M | 4M |
| Q4 2023 | 82 | 27M | 52.3% | 19 / 29 | 15 / 6 | 4M | 2M |
| Q3 2023 | 69 | 26M | 49.8% | 6 / 20 | 23 / 5 | 1M | 2M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of PBYI | Value | % of fund | As of |
|---|---|---|---|---|---|
| Avantis U.S. Small Cap Value ETF | 1,924,360 | 3.73% | $13.80M | 0.05% | May 31, 2026 |
| Vanguard Total Stock Market Index Fund | 1,343,121 | 2.60% | $10.89M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 1,177,097 | 2.28% | $9.55M | 0.01% | Jun 30, 2026 |
| Vanguard Explorer Fund | 777,390 | 1.51% | $6.16M | 0.03% | Jul 31, 2026 |
| Vanguard Strategic Equity Fund | 540,434 | 1.05% | $4.38M | 0.04% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 484,010 | 0.94% | $3.84M | 0.01% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 437,741 | 0.85% | $3.55M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 Value ETF | 336,311 | 0.65% | $2.73M | 0.02% | Jun 30, 2026 |
| Small Cap Value Fund | 267,945 | 0.52% | $2.17M | 0.32% | Jun 30, 2026 |
| Small-Cap Value Fund | 249,200 | 0.48% | $2.02M | 0.59% | Jun 30, 2026 |
| Tax-Managed U.S. Mid & Small Cap Fund | 248,058 | 0.48% | $1.97M | 0.10% | Jul 31, 2026 |
| U.S. Targeted Value Portfolio | 221,297 | 0.43% | $1.75M | 0.01% | Jul 31, 2026 |
| Vanguard Russell 2000 Index Fund | 221,052 | 0.43% | $1.58M | 0.01% | May 31, 2026 |
| U.S. Small Cap Portfolio | 220,843 | 0.43% | $1.75M | 0.01% | Jul 31, 2026 |
| EA Bridgeway Omni Small-Cap Value ETF | 220,316 | 0.43% | $1.79M | 0.07% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Alan H. Auerbach | President and CEO, Director, 10% owner | 7,261,671 | 14.07% | Jul 8, 2026 |
| Maximo F. Nougues | Chief Financial Officer | 230,637 | 0.45% | Jul 8, 2026 |
| Douglas M. Hunt | See Remarks | 196,841 | 0.38% | Jul 8, 2026 |
| Jeffrey Jerome Ludwig | Chief Commercial Officer | 156,792 | 0.30% | Feb 11, 2025 |
| Troy Edward Wilson | Director | 55,300 | 0.11% | Sep 16, 2026 |
| Alessandra Cesano | Director | 118,850 | 0.23% | Sep 16, 2026 |
| Michael Patrick Miller | Director | 81,000 | 0.16% | Jun 15, 2026 |
| Allison Dorval | Director | 90,780 | 0.18% | Jun 15, 2026 |
| Adrian Senderowicz | Director | 27,000 | 0.05% | Jun 15, 2026 |
| Brian M. Stuglik | Director | 113,858 | 0.22% | Jun 15, 2026 |
| Jay M. Moyes | Director | 58,322 | 0.11% | Jun 15, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Alessandra Cesano Director | Sep 14, 2026 | Option exercise | +50,000 | $2.93 | $146.50K | 118,850 |
| Alessandra Cesano Director | Sep 14, 2026 | Sale(10b5-1 plan) | −62,150 | $9.12 | $566.81K | 56,700 |
| Troy Edward Wilson Director | Sep 14, 2026 | Sale(10b5-1 plan) | −5,000 | $9.10 | $45.50K | 54,750 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jul 6, 2026 | Sale(10b5-1 plan) | −44,058 | $8.26 | $363.92K | 7,261,671 |
| Douglas M. Hunt See Remarks | Jul 6, 2026 | Sale(10b5-1 plan) | −8,460 | $8.26 | $69.88K | 196,841 |
| Maximo F. Nougues Chief Financial Officer | Jul 6, 2026 | Sale(10b5-1 plan) | −9,386 | $8.26 | $77.53K | 230,637 |
| Allison Dorval Director | Jun 12, 2026 | Sale(10b5-1 plan) | −11,610 | $7.20 | $83.59K | 90,780 |
| Adrian Senderowicz Director | Jun 12, 2026 | Sale(10b5-1 plan) | −27,000 | $7.20 | $194.40K | 27,000 |
| Jay M. Moyes Director | Jun 12, 2026 | Sale(10b5-1 plan) | −22,000 | $7.22 | $158.84K | 58,322 |
| Brian M. Stuglik Director | Jun 12, 2026 | Sale(10b5-1 plan) | −8,100 | $7.20 | $58.32K | 113,858 |
| Troy Edward Wilson Director | Jun 12, 2026 | Sale(10b5-1 plan) | −10,800 | $7.20 | $77.76K | 59,750 |
| Allison Dorval Director | Jun 11, 2026 | Award | +27,000 | – | – | 102,390 |
| Adrian Senderowicz Director | Jun 11, 2026 | Award | +27,000 | – | – | 54,000 |
| Jay M. Moyes Director | Jun 11, 2026 | Award | +27,000 | – | – | 80,322 |
| Brian M. Stuglik Director | Jun 11, 2026 | Award | +27,000 | – | – | 121,958 |
| Troy Edward Wilson Director | Jun 11, 2026 | Award | +27,000 | – | – | 70,550 |
| Michael Patrick Miller Director | Jun 11, 2026 | Award | +27,000 | – | – | 81,000 |
| Alessandra Cesano Director | Jun 11, 2026 | Award | +27,000 | – | – | 68,850 |
| Maximo F. Nougues Chief Financial Officer | Feb 18, 2026 | Award | +46,739 | – | – | 240,023 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Feb 18, 2026 | Award | +159,778 | – | – | 7,305,729 |
| Douglas M. Hunt See Remarks | Feb 18, 2026 | Award | +49,394 | – | – | 205,301 |
| Douglas M. Hunt See Remarks | Jan 7, 2026 | Sale(10b5-1 plan) | −5,014 | $5.88 | $29.48K | 155,907 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jan 7, 2026 | Sale(10b5-1 plan) | −18,012 | $5.88 | $105.91K | 7,145,951 |
| Maximo F. Nougues Chief Financial Officer | Jan 7, 2026 | Sale(10b5-1 plan) | −6,405 | $5.88 | $37.66K | 193,284 |
| Douglas M. Hunt See Remarks | Jan 6, 2026 | Sale(10b5-1 plan) | −3,973 | $5.84 | $23.20K | 160,921 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jan 6, 2026 | Sale(10b5-1 plan) | −16,938 | $5.84 | $98.92K | 7,163,963 |
| Maximo F. Nougues Chief Financial Officer | Jan 6, 2026 | Sale(10b5-1 plan) | −4,540 | $5.84 | $26.51K | 199,689 |
| Michael Patrick Miller Director | Nov 11, 2025 | Sale | −20,000 | $4.86 | $97.20K | 54,000 |
| Alessandra Cesano Director | Jul 18, 2025 | Sale(10b5-1 plan) | −27,000 | $3.37 | $90.99K | 41,850 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jul 9, 2025 | Sale(10b5-1 plan) | −21,580 | $3.54 | $76.39K | 7,180,901 |
| Douglas M. Hunt See Remarks | Jul 9, 2025 | Sale(10b5-1 plan) | −3,443 | $3.54 | $12.19K | 164,894 |
| Maximo F. Nougues Chief Financial Officer | Jul 9, 2025 | Sale(10b5-1 plan) | −3,935 | $3.54 | $13.93K | 204,229 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jul 8, 2025 | Sale(10b5-1 plan) | −25,592 | $3.53 | $90.34K | 7,202,481 |
| Douglas M. Hunt See Remarks | Jul 8, 2025 | Sale(10b5-1 plan) | −4,374 | $3.53 | $15.44K | 168,337 |
| Maximo F. Nougues Chief Financial Officer | Jul 8, 2025 | Sale(10b5-1 plan) | −5,587 | $3.53 | $19.72K | 208,164 |
| Jay M. Moyes Director | Jun 13, 2025 | Sale(10b5-1 plan) | −22,000 | $3.40 | $74.80K | 53,322 |
| Brian M. Stuglik Director | Jun 13, 2025 | Sale(10b5-1 plan) | −8,100 | $3.39 | $27.46K | 94,958 |
| Allison Dorval Director | Jun 13, 2025 | Sale(10b5-1 plan) | −11,610 | $3.40 | $39.47K | 75,390 |
| Adrian Senderowicz Director | Jun 13, 2025 | Sale(10b5-1 plan) | −27,000 | $3.40 | $91.80K | 27,000 |
| Troy Edward Wilson Director | Jun 13, 2025 | Sale(10b5-1 plan) | −10,800 | $3.40 | $36.72K | 43,550 |
| Alessandra Cesano Director | Jun 13, 2025 | Sale(10b5-1 plan) | −12,150 | $3.40 | $41.31K | 68,850 |
| Michael Patrick Miller Director | Jun 11, 2025 | Award | +27,000 | – | – | 74,000 |
| Jay M. Moyes Director | Jun 11, 2025 | Award | +27,000 | – | – | 75,322 |
| Troy Edward Wilson Director | Jun 11, 2025 | Award | +27,000 | – | – | 54,350 |
| Allison Dorval Director | Jun 11, 2025 | Award | +27,000 | – | – | 87,000 |
| Alessandra Cesano Director | Jun 11, 2025 | Award | +27,000 | – | – | 81,000 |
| Adrian Senderowicz Director | Jun 11, 2025 | Award | +27,000 | – | – | 54,000 |
| Brian M. Stuglik Director | Jun 11, 2025 | Award | +27,000 | – | – | 103,058 |
| Douglas M. Hunt See Remarks | Feb 7, 2025 | Award | +48,117 | – | – | 172,711 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Feb 7, 2025 | Award | +198,399 | – | – | 7,228,073 |
| Maximo F. Nougues Chief Financial Officer | Feb 7, 2025 | Award | +61,456 | – | – | 213,751 |
| Jeffrey Jerome Ludwig Chief Commercial Officer | Feb 7, 2025 | Award | +47,841 | – | – | 156,792 |
| Jeffrey Jerome Ludwig Chief Commercial Officer | Jan 2, 2025 | Sale(10b5-1 plan) | −9,437 | $3.15 | $29.73K | 108,951 |
| Douglas M. Hunt See Remarks | Jan 2, 2025 | Sale(10b5-1 plan) | −8,633 | $3.15 | $27.19K | 124,594 |
| Maximo F. Nougues Chief Financial Officer | Jan 2, 2025 | Sale(10b5-1 plan) | −10,227 | $3.15 | $32.22K | 152,295 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jan 2, 2025 | Sale(10b5-1 plan) | −33,841 | $3.15 | $106.60K | 7,029,674 |
| Michael Patrick Miller Director | Aug 12, 2024 | Sale | −23,358 | $3.49 | $81.52K | 47,000 |
| Alan H. Auerbach President and CEO, Director, 10% owner | Jul 17, 2024 | Sale(10b5-1 plan) | −21,920 | $3.70 | $81.10K | 7,063,515 |
| Douglas M. Hunt See Remarks | Jul 17, 2024 | Sale(10b5-1 plan) | −3,637 | $3.70 | $13.46K | 133,227 |
| Maximo F. Nougues Chief Financial Officer | Jul 17, 2024 | Sale(10b5-1 plan) | −4,156 | $3.70 | $15.38K | 162,522 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Alessandra Cesano Director | Sep 14, 2026 | 62,150 | $565.57K | Sep 14, 2026 | Restricted Stock Vesting |
| Troy Edward Wilson Director | Sep 14, 2026 | 5,000 | $45.50K | Sep 14, 2026 | Restricted Stock Vesting |
| Alan H. Auerbach Officer, Director | Jul 6, 2026 | 44,058 | $364.04K | Jul 6, 2026 | Restricted Stock Vesting |
| Douglas M. Hunt Officer | Jul 6, 2026 | 8,460 | $69.90K | Jul 6, 2026 | Restricted Stock Vesting |
| Maximo F. Nougues Officer | Jul 6, 2026 | 9,386 | $77.55K | Jul 6, 2026 | Restricted Stock Vesting |
| Adrian Senderowicz Director | Jun 12, 2026 | 27,000 | $196.02K | Jun 12, 2026 | Restricted Stock Vesting |
| Troy Edward Wilson Director | Jun 12, 2026 | 10,800 | $78.41K | Jun 12, 2026 | Restricted Stock Vesting |
| Brian M. Stuglik Director | Jun 12, 2026 | 8,100 | $58.81K | Jun 12, 2026 | Restricted Stock Vesting |
| Allison Dorval Director | Jun 12, 2026 | 11,610 | $84.29K | Jun 12, 2026 | Restricted Stock Vesting |
| Jay M. Moyes Director | Jun 12, 2026 | 22,000 | $159.72K | Jun 12, 2026 | Restricted Stock Vesting |
| Maximo F. Nougues Officer | Jan 7, 2026 | 6,405 | $37.66K | Jan 7, 2026 | Restricted Stock Vesting |
| Douglas M. Hunt Officer | Jan 7, 2026 | 5,014 | $29.48K | Jan 7, 2026 | Restricted Stock Vesting |
| Alan H. Auerbach Officer, Director | Jan 7, 2026 | 18,012 | $105.89K | Jan 7, 2026 | Restricted Stock Vesting |
| Douglas M. Hunt Officer | Jan 6, 2026 | 3,973 | $23.22K | Jan 6, 2026 | Restricted Stock Vesting |
| Alan H. Auerbach Officer, Director | Jan 6, 2026 | 16,938 | $98.98K | Jan 6, 2026 | Restricted Stock Vesting |