Rhythm Pharmaceuticals, Inc. (RYTM) Insider Ownership

Historic Insider Ownership Trends

Based on data from the past 90 days ending January 10, 2026, Rhythm Pharmaceuticals's three largest insider shareholders are President And Ceo David P Meeker (201.82K shares), Chief Financial Officer Hunter C Smith (116.92K shares), Evp And Head Of International Yann Mazabraud (37.66K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
David P Meeker President And Ceo 201,825 05 Jun, 2025
Hunter C Smith Chief Financial Officer 116,915 14 Aug, 2025
Yann Mazabraud Evp And Head Of International 37,655 01 May, 2025
Pamela J. Cramer Chief Human Resources Officer 20,814 15 Dec, 2025
Edward T Mathers 12,771 23 Jun, 2025
Joseph Shulman Chief Technical Officer 8,509 03 Nov, 2025
William T. Roberts Chief Accounting Officer 7,872 31 Mar, 2023
David W J Mcgirr 7,000 23 Jun, 2025
Jennifer L Good 7,000 23 Jun, 2025
Camille L Bedrosian 7,000 23 Jun, 2025
Christophe Jean 7,000 23 Jun, 2025
Stuart A Arbuckle 7,000 23 Jun, 2025
Lynn A. Tetrault 7,000 23 Jun, 2025
Jennifer Kayden Lee Evp And Head Of North America 5,858 19 Feb, 2025
Alastair Garfield Chief Scientific Officer 3,126 03 Jul, 2025
Christopher Paul German Corporate Controller & Cao 922 14 Aug, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Dec, 2025 Pamela J. Cramer Common Stock A 3,350 $27.35 24,164 D M
11 Dec, 2025 Pamela J. Cramer Common Stock D 3,350 $111.00 20,814 D S
20 Nov, 2025 Pamela J. Cramer Common Stock A 3,350 $27.35 24,164 D M
20 Nov, 2025 Pamela J. Cramer Common Stock D 3,350 $105.00 20,814 D S
10 Nov, 2025 Pamela J. Cramer Common Stock A 3,515 $6.80 24,329 D M
10 Nov, 2025 Pamela J. Cramer Common Stock D 3,515 $100.00 20,814 D S
07 Nov, 2025 Pamela J. Cramer Common Stock D 19,351 $98.82 20,814 D S
07 Nov, 2025 Pamela J. Cramer Common Stock A 8,805 $19.02 29,619 D M
07 Nov, 2025 Pamela J. Cramer Common Stock A 10,546 $6.80 40,165 D M
30 Oct, 2025 Joseph Shulman Common Stock A 9,748 $30.66 18,257 D M
30 Oct, 2025 Joseph Shulman Common Stock D 9,748 $115.24 8,509 D S
28 Oct, 2025 Joseph Shulman Common Stock A 721 $30.66 11,324 D M
28 Oct, 2025 Joseph Shulman Common Stock D 2,815 $115.01 8,509 D S
28 Oct, 2025 Joseph Shulman Common Stock A 2,094 $27.35 10,603 D M
16 Oct, 2025 Joseph Shulman Common Stock A 2,093 $27.35 10,602 D M
16 Oct, 2025 Joseph Shulman Common Stock D 8,332 $112.06 11,921 D S
16 Oct, 2025 Joseph Shulman Common Stock D 3,412 $112.81 8,509 D S
16 Oct, 2025 Joseph Shulman Common Stock A 12,344 $30.66 22,946 D M
16 Oct, 2025 Joseph Shulman Common Stock D 2,693 $110.95 20,253 D S
02 Sep, 2025 Joseph Shulman Common Stock A 2,094 $27.35 10,603 D M