Puma Biotechnology Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:PBYI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
12 Aug 24	SellUS$81,466	Michael Miller	Individual		23,358	US$3.49
17 Jul 24	SellUS$81,128	Alan Auerbach	Individual		21,920	US$3.70

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of PBYI?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	7,515,660	15.1%
General Public	12,497,904	25.2%
Institutions	29,597,235	59.7%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 65.22% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
14%	Alan Auerbach	6,945,988	US$20.0m	0.79%	no data
7.71%	BlackRock, Inc.	3,823,805	US$11.0m	-0.09%	no data
7.34%	The Vanguard Group, Inc.	3,643,422	US$10.5m	0.2%	no data
4.94%	Acorn Bioventures	2,450,711	US$7.1m	-25.3%	5.7%
3.98%	Acadian Asset Management LLC	1,972,128	US$5.7m	0.16%	0.01%
3.82%	Millennium Management LLC	1,894,126	US$5.5m	-34.3%	no data
3.54%	Renaissance Technologies LLC	1,755,513	US$5.1m	-0.95%	0.01%
2.53%	Athyrium Capital Management, LP	1,256,411	US$3.6m	0%	95.91%
2.01%	Eversept Partners, L.P.	996,102	US$2.9m	-23%	0.35%
1.91%	American Century Investment Management Inc	948,376	US$2.7m	8.44%	no data
1.85%	Geode Capital Management, LLC	919,435	US$2.6m	0.23%	no data
1.74%	Dimensional Fund Advisors LP	863,760	US$2.5m	24.7%	no data
1.63%	Kennedy Capital Management LLC	809,375	US$2.3m	36.5%	0.06%
1.23%	State Street Global Advisors, Inc.	609,942	US$1.8m	1.4%	no data
0.98%	Connor, Clark & Lunn Investment Management Ltd.	487,368	US$1.4m	32.3%	0.01%
0.91%	GlobeFlex Capital LP	452,606	US$1.3m	0%	0.1%
0.68%	SEI Investments Management Corporation	336,809	US$970.0k	48%	no data
0.67%	BNY Asset Management	331,853	US$955.7k	19.5%	no data
0.66%	Northern Trust Global Investments	325,417	US$937.2k	2.42%	no data
0.63%	SEI Investments Company	311,661	US$897.6k	8.03%	no data
0.58%	Los Angeles Capital Management LLC	285,679	US$822.8k	16.3%	no data
0.53%	Morgan Stanley, Investment Banking and Brokerage Investments	262,504	US$756.0k	-4.72%	no data
0.51%	Goldman Sachs Group, Investment Banking and Securities Investments	250,980	US$722.8k	44.1%	no data
0.45%	D. E. Shaw & Co., L.P.	222,608	US$641.1k	288%	no data
0.41%	STRS Ohio	201,400	US$580.0k	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/04/17 10:14
End of Day Share Price	2025/04/17 00:00
Earnings	2024/12/31
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Puma Biotechnology, Inc. is covered by 16 analysts. 2 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Huidong Wang	Barclays
Geoffrey Meacham	BofA Global Research
Yigal Nochomovitz	Citigroup Inc