RHYTHM PHARMACEUTICALS, INC. (RYTM) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: May 05, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 12.79% (2 years)
Historical Dilution Factor: moderate recent dilution
Outstanding Shares
68M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

RYTM currently has 68M outstanding shares. with minimal authorized share overhang for future dilution. The company has diluted shareholders by 12.79% over the past 2 years through share issuances.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 05, 2026

10-Q filing | 68.0M shares outstanding

68M 0
Nov 04, 2025

10-Q filing | 66.3M shares outstanding

66M 0
Aug 05, 2025

10-Q filing | 63.7M shares outstanding

64M 0
Jul 11, 2025

8-K filing: Rhythm Pharmaceuticals, Inc. completed an offering of 2,058,824 shares of common stock at $85.00 per share, and the underwriters exercised their option to purchase an additional 308,823 shares, resulting in expected net proceeds of approximately $188.7 million. ($175.0M proceeds)

63M 0
May 07, 2025

10-Q filing | 63.1M shares outstanding

63M 0
Feb 28, 2025

10-K filing | 61.0M shares outstanding

61M 0
Nov 06, 2024

10-Q filing | 61.2M shares outstanding

61M 0
Aug 06, 2024

10-Q filing | 61.0M shares outstanding

61M 0
Jul 10, 2024

8-K filing: Rhythm Pharmaceuticals filed a prospectus supplement related to the resale of up to 3,124,995 shares of common stock by certain stockholders, satisfying registration rights granted in connection with the issuance and sale of 150,000 shares of Series A Convertible Preferred Stock for $150,000,000 on April 15, 2024. ($150.0M proceeds)

60M 0
May 07, 2024

10-Q filing | 60.1M shares outstanding

60M 0
Apr 16, 2024

8-K filing: Rhythm Pharmaceuticals, Inc. completed the issuance and sale of 150,000 shares of Series A Convertible Preferred Stock to affiliates of Perceptive Advisors LLC and other investors for an aggregate purchase price of $150,000,000, or $1,000 per share, and filed the Certificate of Designations with the Secretary of State of the State of Delaware, effective April 15, 2024. ($150.0M proceeds)

58M 800K
Apr 01, 2024

8-K filing: Rhythm Pharmaceuticals, Inc. entered into an Investment Agreement for the issuance and sale of 150,000 shares of Series A Convertible Preferred Stock for an aggregate purchase price of $150,000,000. ($150.0M proceeds)

58M 800K
Feb 29, 2024

10-K filing | 57.7M shares outstanding

58M 800K
Nov 08, 2023

10-Q filing | 57.9M shares outstanding

58M 600K
Aug 21, 2023

8-K filing: Rhythm Pharmaceuticals, Inc. sold approximately 2.019 million shares of its common stock in the ATM Program between August 10, 2023 and August 21, 2023 for gross proceeds of approximately $50.0 million. ($50.0M proceeds)

57M 1.6M
Aug 01, 2023

10-Q filing | 56.9M shares outstanding

57M 1.6M
May 02, 2023

10-Q filing | 56.7M shares outstanding

57M 1.8M
Mar 01, 2023

10-K filing | 52.1M shares outstanding

52M 6.4M
Nov 08, 2022

10-Q filing | 51.4M shares outstanding

51M 7.1M
Sep 15, 2022

8-K filing: Rhythm Pharmaceuticals, Inc. entered into an underwriting agreement for the issuance and sale of 4,800,000 shares of common stock at a price of $26.00 per share, with the offering expected to close on or about September 19, 2022. ($116.9M proceeds)

50M 8.1M
Aug 03, 2022

10-Q filing | 50.4M shares outstanding

50M 8.1M
May 03, 2022

10-Q filing | 50.3M shares outstanding

50M 8.1M
Mar 01, 2022

10-K filing | 49.6M shares outstanding

50M 8.9M
Nov 02, 2021

S-3 filing: Rhythm Pharmaceuticals, Inc. files an S-3 to offer and sell up to $300,000,000 in the aggregate of common stock, preferred stock, debt securities, warrants, and units from time to time in one or more offerings, and also offers common stock in an at the market offering through Cowen and Company LLC.

50M 8.3M
Nov 02, 2021

10-Q filing | 50.3M shares outstanding

50M 8.2M
Aug 03, 2021

10-Q filing | 50.2M shares outstanding

50M 0
May 03, 2021

10-Q filing | 48.5M shares outstanding

49M 0
Mar 01, 2021

10-K filing | 44.2M shares outstanding

44M 0
Nov 02, 2020

10-Q filing | 44.2M shares outstanding

44M 0
Aug 03, 2020

10-Q filing | 44.1M shares outstanding

44M 0
May 04, 2020

10-Q filing | 44.1M shares outstanding

44M 0
Mar 02, 2020

10-K filing | 44.1M shares outstanding

44M 0
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