Rhythm Pharmaceuticals, Inc. (RYTM) Insider Trading
Over the last 3 months, RYTM insiders made 0 open-market buys and 2 sales, a net sale of -$4.1M (SEC Form 4). Over the last 6 months, 214 institutions increased and 180 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$4.1M
Insider trades by month Buys Sells
Nov
Dec
Feb
Mar
May
Jun
Context3-month price +27.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 24, 2026 | TETRAULT LYNN A.director | Sell | 37,000 | $100.32 |
| Jun 24, 2026 | TETRAULT LYNN A.director | Option | 37,000 | $28.27 |
| May 20, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Option | 3,000 | $17.87 |
| May 19, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Option | 1,406 | $17.97 |
| May 19, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Option | 1,349 | $49.23 |
| May 19, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Sell | 4,643 | $92.21 |
| May 19, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Option | 1,687 | $56.69 |
| Apr 3, 2026 | Mazabraud Yannofficer: EVP, Head of International | Option | 12,875 | — |
| Apr 3, 2026 | Mazabraud Yannofficer: EVP, Head of International | Option | 10,375 | — |
| Apr 3, 2026 | Mazabraud Yannofficer: EVP, Head of International | Option | 2,500 | — |
| Apr 3, 2026 | Popovits Kimberly Jdirector | Grant | 10,257 | $88.12 |
| Apr 3, 2026 | Popovits Kimberly Jdirector | Grant | 6,808 | — |
| Mar 6, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Option | 1,500 | $17.97 |
| Mar 6, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Sell | 5,614 | $89.56 |
| Mar 4, 2026 | Mazabraud Yannofficer: EVP, Head of International | Grant | 35,000 | $94.94 |
| Mar 3, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Tax | 342 | $94.94 |
| Mar 3, 2026 | German Christopher Paulofficer: Corporate Controller & CAO | Option | 1,162 | — |
| Mar 2, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Option | 6,099 | $6.80 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 1,069 | $103.00 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 800 | $102.10 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 1,200 | $99.42 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 200 | $100.52 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 585 | $103.28 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 1,308 | $100.27 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 900 | $101.70 |
| Feb 19, 2026 | Smith Hunter Cofficer: Chief Financial Officer | Sell | 1,692 | $100.92 |
| Feb 18, 2026 | Mazabraud Yannofficer: EVP, Head of International | Option | 10,000 | — |
| Feb 13, 2026 | Shulman Josephofficer: Chief Technical Officer | Grant | 15,000 | — |
| Feb 13, 2026 | Meeker David Pdirector, officer: President and CEO | Grant | 107,850 | $98.47 |
| Feb 13, 2026 | Cramer Pamela J.officer: Chief Human Resources Officer | Grant | 11,650 | — |
Source: RYTM SEC Form 4 filings, latest Jun 24, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their RYTM positions over the last 6 months (SEC Form 13F).
Increased
214
New positions
115
Reduced
180
Sold out
93
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | Increased | 6.7M | Feb 17, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 6.7M | May 15, 2026 |
| BLACKROCK, INC. | Reduced | 6.3M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 6.2M | May 13, 2026 |
| VANGUARD GROUP INC | Increased | 6.2M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.9M | May 15, 2026 |
| BAKER BROS. ADVISORS LP | Unchanged | 5.6M | May 15, 2026 |
| BAKER BROS. ADVISORS LP | Unchanged | 5.6M | Feb 17, 2026 |
| PERCEPTIVE ADVISORS LLC | Increased | 4.7M | May 29, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 3.5M | Feb 11, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 3.4M | May 11, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 3.0M | May 8, 2026 |
| NEA MANAGEMENT COMPANY, LLC | Unchanged | 2.9M | Feb 17, 2026 |
| PERCEPTIVE ADVISORS LLC | Reduced | 2.5M | Feb 17, 2026 |
| STATE STREET CORP | Increased | 2.3M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.