PTC THERAPEUTICS, INC. (PTCT) - 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: 2.37% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
8.3M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

PTCT currently has 8.29M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 2.37% 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 | 8.3M shares outstanding

8.3M 0
Nov 04, 2025

10-Q filing | 78.5M shares outstanding

78M 0
Aug 07, 2025

10-Q filing | 78.2M shares outstanding

78M 0
May 06, 2025

10-Q filing | 78.1M shares outstanding

78M 0
Feb 27, 2025

10-K filing | 76.8M shares outstanding

77M 0
Nov 07, 2024

10-Q filing | 76.9M shares outstanding

77M 0
Aug 08, 2024

10-Q filing | 76.7M shares outstanding

77M 0
Apr 25, 2024

10-Q filing | 76.5M shares outstanding

76M 0
Feb 29, 2024

10-K filing | 74.8M shares outstanding

75M 0
Oct 26, 2023

10-Q filing | 75.4M shares outstanding

75M 0
Aug 03, 2023

10-Q filing | 74.7M shares outstanding

75M 0
Apr 27, 2023

10-Q filing | 73.7M shares outstanding

74M 0
Feb 21, 2023

10-K filing | 71.7M shares outstanding

72M 0
Oct 27, 2022

10-Q filing | 71.7M shares outstanding

72M 0
Aug 04, 2022

10-Q filing | 71.4M shares outstanding

71M 0
May 03, 2022

10-Q filing | 71.2M shares outstanding

71M 0
Feb 22, 2022

10-K filing | 70.5M shares outstanding

70M 0
Oct 28, 2021

10-Q filing | 70.7M shares outstanding

71M 0
Jul 29, 2021

10-Q filing | 70.6M shares outstanding

71M 0
May 04, 2021

10-Q filing | 70.4M shares outstanding

70M 0
Feb 25, 2021

10-K filing | 70.3M shares outstanding

70M 0
Oct 29, 2020

10-Q filing | 67.8M shares outstanding

68M 0
Aug 05, 2020

10-Q filing | 67.7M shares outstanding

68M 0
Jun 04, 2020

8-K filing: PTC Therapeutics acquired Censa Pharmaceuticals and issued 845,365 shares of common stock to Censa securityholders as part of the upfront consideration for the merger.

62M 0
May 06, 2020

8-K filing: PTC Therapeutics, Inc. entered into an agreement to acquire Censa Pharmaceuticals Inc. through a merger, involving cash and PTC Therapeutics common stock.

62M 0
Apr 30, 2020

8-K filing: PTC Therapeutics, Inc. issued 2,723,826 shares of its common stock and paid $36,881,009 to certain former equityholders of Agilis Biotherapeutics, Inc. in exchange for the cancellation and forfeiture of their rights to receive certain milestone-based contingent payments under the Merger Agreement.

51M 0
Apr 30, 2020

10-Q filing | 61.9M shares outstanding

62M 0
Mar 02, 2020

10-K filing | 50.6M shares outstanding

51M 0
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