Rhythm Pharmaceuticals, Inc. (RYTM) Insider Ownership

Historic Ownership Trends

Over the 90-day window ending December 12, 2025, Rhythm Pharmaceuticals's three dominant insider ownership positions are held by Chief Financial Officer Hunter C Smith (116.92K shares), Chief Human Resources Officer Pamela J. Cramer (20.81K shares), Chief Technical Officer Joseph Shulman (8.51K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Todd Foley 909,258 16 Mar, 2021
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 24 Nov, 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
Stuart A Arbuckle 7,000 23 Jun, 2025
David W J Mcgirr 7,000 23 Jun, 2025
Lynn A. Tetrault 7,000 23 Jun, 2025
Camille L Bedrosian 7,000 23 Jun, 2025
Jennifer L Good 7,000 23 Jun, 2025
Christophe Jean 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
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
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
07 Nov, 2025 Pamela J. Cramer Common Stock D 19,351 $98.82 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
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 2,094 $27.35 10,603 D M
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
16 Oct, 2025 Joseph Shulman Common Stock A 2,093 $27.35 10,602 D M
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
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
02 Sep, 2025 Joseph Shulman Common Stock A 2,094 $27.35 10,603 D M
02 Sep, 2025 Joseph Shulman Common Stock A 14,687 $30.66 25,290 D M
02 Sep, 2025 Joseph Shulman Common Stock D 16,781 $105.30 8,509 D S