Solid Biosciences Inc. (SLDB) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: May 12, 2026

Risk Assessment Details

Potential Dilution: 64.44% of current shares
Recent Dilution: 228.4% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
98M
Potential Supply
63M
Additional shares possible
Splits
None
Past 2 years

Summary

SLDB currently has 98.4M outstanding shares. with significant dilution risk as 63.4M authorized shares could dilute existing holders by 64.4%. The company has significantly diluted shareholders by 228.4% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 12, 2026

10-Q filing | 98.4M shares outstanding

98M 63M
Mar 19, 2026

S-3 filing: This prospectus relates to the resale from time to time of up to 42,780,739 shares of common stock of Solid Biosciences Inc. by the selling stockholders.

78M 84M
Mar 19, 2026

S-3 filing: This S-3 filing relates to the resale of 1,316,899 shares of common stock of Solid Biosciences Inc. by FA212 LLC, acquired in a private placement on January 15, 2026.

78M 41M
Mar 19, 2026

10-K filing | 98.4M shares outstanding

98M 19M
Nov 03, 2025

10-Q filing | 77.9M shares outstanding

78M 40M
Aug 12, 2025

10-Q filing | 77.9M shares outstanding

78M 40M
May 15, 2025

10-Q filing | 77.5M shares outstanding

78M 40M
May 15, 2025

S-3 filing: The company is filing an S-3 to register the offer and sale of debt securities, common stock, preferred stock and depositary shares, up to an aggregate offering price of $400,000,000.

77M 40M
Mar 06, 2025

S-3 filing: Solid Biosciences Inc. is registering 975,496 shares of common stock on behalf of the selling stockholder, FA212 LLC, for resale from time to time.

41M 83M
Mar 06, 2025

S-3 filing: This prospectus relates to the resale from time to time of up to 364,990 shares of common stock of Solid Biosciences Inc. by Mayo Foundation for Medical Education and Research.

41M 83M
Mar 06, 2025

10-K filing | 77.5M shares outstanding

77M 47M
Nov 06, 2024

10-Q filing | 41.4M shares outstanding

41M 82M
Aug 13, 2024

10-Q filing | 40.9M shares outstanding

41M 82M
May 15, 2024

10-Q filing | 38.2M shares outstanding

38M 85M
May 15, 2024

S-3/A filing: The company may offer and sell securities from time to time in one or more offerings of up to $300,000,000 in aggregate offering price.

38M 85M
Mar 13, 2024

S-3 filing: The company intends to offer and sell securities from time to time in one or more offerings of up to $300,000,000 in aggregate offering price, including common stock offered at an aggregate price of up to $75,000,000.

37M 86M
Mar 13, 2024

10-K filing | 37.8M shares outstanding

38M 85M
Jan 30, 2024

S-3 filing: This prospectus relates to the resale from time to time of up to 19,685,581 shares of common stock of Solid Biosciences Inc. by the selling stockholders listed on page 8, including their transferees, pledgees or donees, or their respective successors-in-interest, which includes 2,712,478 shares of our common stock issuable upon the exercise of pre-funded warrants to purchase shares of our common stock, issued to the selling stockholders in our January 2024 private placement.

20M 96M
Nov 08, 2023

10-Q filing | 20.1M shares outstanding

20M 77M
Aug 14, 2023

10-Q filing | 19.7M shares outstanding

20M 77M
May 11, 2023

10-Q filing | 19.6M shares outstanding

20M 77M
Mar 23, 2023

10-K filing | 19.6M shares outstanding

20M 77M
Jan 26, 2023

S-3 filing: This prospectus relates to the resale from time to time of up to 11,992,548 shares of common stock of Solid Biosciences Inc. by the selling stockholders.

7.5M 89M
Nov 10, 2022

10-Q filing | 7.5M shares outstanding

7.5M 77M
Aug 11, 2022

10-Q filing | 112.9M shares outstanding

110M 0
Apr 27, 2022

10-Q filing | 112.8M shares outstanding

110M 0
Mar 14, 2022

10-K filing | 110.5M shares outstanding

110M 0
Nov 03, 2021

10-Q filing | 110.3M shares outstanding

110M 0
Aug 16, 2021

S-3 filing: The company is filing an S-3 to register the offer and sale of up to $75,000,000 of its common stock through Jefferies, acting as its sales agent and an additional $200,000,000 in aggregate offering price of debt securities, common stock, preferred stock and depositary shares.

110M 0
Aug 16, 2021

10-Q filing | 110.3M shares outstanding

110M 0
May 14, 2021

10-Q filing | 110.3M shares outstanding

110M 0
Mar 15, 2021

10-K filing | 85.1M shares outstanding

85M 0
Mar 15, 2021

S-3 filing: Solid Biosciences Inc. is filing an S-3 prospectus to register 24,324,320 shares of common stock for resale by selling stockholders who received these shares in a December 2020 private placement.

60M 24M
Nov 05, 2020

10-Q filing | 60.4M shares outstanding

60M 0
Aug 06, 2020

10-Q filing | 46.1M shares outstanding

46M 0
May 07, 2020

10-Q filing | 46.1M shares outstanding

46M 0
Mar 12, 2020

10-K filing | 46.1M shares outstanding

46M 0
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