PUMA BIOTECHNOLOGY, INC. (PBYI) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Low Risk
Limited dilution potential
Last updated: May 07, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 5.18% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
51M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

PBYI currently has 50.8M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 5.18% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 07, 2026

10-Q filing | 50.8M shares outstanding

51M 0
Nov 06, 2025

10-Q filing | 50.3M shares outstanding

50M 0
Aug 07, 2025

10-Q filing | 49.7M shares outstanding

50M 0
May 08, 2025

10-Q filing | 49.6M shares outstanding

50M 0
Feb 27, 2025

10-K filing | 49.1M shares outstanding

49M 0
Nov 07, 2024

10-Q filing | 49.0M shares outstanding

49M 0
Aug 01, 2024

10-Q filing | 48.3M shares outstanding

48M 0
May 02, 2024

10-Q filing | 48.2M shares outstanding

48M 0
Feb 29, 2024

10-K filing | 47.6M shares outstanding

48M 0
Nov 02, 2023

10-Q filing | 47.5M shares outstanding

48M 0
Aug 03, 2023

10-Q filing | 46.8M shares outstanding

47M 620K
May 04, 2023

10-Q filing | 46.6M shares outstanding

47M 740K
Mar 02, 2023

10-K filing | 44.7M shares outstanding

45M 2.7M
Dec 13, 2022

8-K filing: Puma Biotechnology sold 568,181 shares of its common stock to Alan H. Auerbach for approximately $2.5 million, with a price of $4.40 per share. The private placement closed on December 12, 2022. ($2.5M proceeds)

46M 1.8M
Nov 03, 2022

10-Q filing | 45.6M shares outstanding

46M 1.8M
Aug 04, 2022

10-Q filing | 45.4M shares outstanding

45M 2M
Jul 25, 2022

S-3 filing: Puma Biotechnology, Inc. is offering up to 1,792,114 shares of common stock by the Selling Stockholder from time to time in one or more offerings.

42M 5.2M
May 05, 2022

10-Q filing | 42.2M shares outstanding

42M 3.4M
Mar 14, 2022

8-K filing: Puma Biotechnology sold 3,584,228 shares of its common stock to Alan Auerbach and Athyrium Opportunities IV Co-Invest 2 LP for gross proceeds of $10.0 million in a private placement that closed on March 10, 2022. ($10.0M proceeds)

40M 5.5M
Mar 03, 2022

10-K filing | 40.1M shares outstanding

40M 5.5M
Nov 04, 2021

10-Q filing | 40.8M shares outstanding

41M 4.8M
Aug 05, 2021

10-Q filing | 40.5M shares outstanding

40M 5.1M
Jul 02, 2021

S-3 filing: Puma Biotechnology, Inc. files an S-3 form to offer and sell up to $50,000,000 in the aggregate of common stock from time to time in one or more offerings.

40M 5.3M
May 06, 2021

10-Q filing | 40.3M shares outstanding

40M 0
Mar 01, 2021

10-K filing | 39.3M shares outstanding

39M 0
Nov 05, 2020

10-Q filing | 39.7M shares outstanding

40M 0
Aug 06, 2020

10-Q filing | 39.4M shares outstanding

39M 0
May 07, 2020

10-Q filing | 39.4M shares outstanding

39M 0
Feb 28, 2020

10-K filing | 39.3M shares outstanding

39M 0
Weekly Research

Get Weekly Super Stonk Alerts

Never miss a squeeze opportunity. Get our weekly analysis of high short interest stocks, AI-discovered gems, and dilution warnings delivered to your inbox.

No spam Unsubscribe anytime