RYTM (Rhythm Pharmaceuticals, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by RYTM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-14 | David P Meeker | President and CEO | MIXED | — | — |
| 2026-09-01 | Hunter C Smith | Chief Financial Officer | MIXED | — | — |
| 2026-08-18 | Manher Joshi | Chief Medical Officer | A | — | — |
| 2026-08-17 | Alastair Garfield | Chief Scientific Officer | Sell | — | — |
| 2026-08-17 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| 2026-08-14 | Jennifer Kayden Lee | EVP, Head of North America | MIXED | — | — |
| 2026-08-14 | Yann Mazabraud | EVP, Head of International | MIXED | — | — |
| 2026-07-02 | Alastair Garfield | Chief Scientific Officer | MIXED | — | — |
| 2026-06-25 | JENNIFER L GOOD | Director | M | — | — |
| 2026-06-25 | DAVID W J MCGIRR | Director | M | — | — |
| 2026-06-25 | LYNN A. TETRAULT | Director | M | — | — |
| 2026-06-25 | CHRISTOPHE JEAN | Director | M | — | — |
| 2026-06-25 | Stuart A Arbuckle | Director | M | — | — |
| 2026-06-24 | LYNN A. TETRAULT | Director | MIXED | — | — |
| 2026-05-20 | Hunter C Smith | Chief Financial Officer | M | — | — |
| 2026-05-19 | Christopher Paul German | Corporate Controller & CAO | MIXED | — | — |
| 2026-04-03 | Yann Mazabraud | EVP, Head of International | M | — | — |
| 2026-04-03 | Kimberly J Popovits | Director | A | — | — |
| 2026-03-16 | Edward T Mathers | Director | J | — | — |
| 2026-03-06 | Christopher Paul German | Corporate Controller & CAO | MIXED | — | — |
| 2026-03-04 | Edward T Mathers | Director | J | — | — |
| 2026-03-04 | Yann Mazabraud | EVP, Head of International | A | — | — |
| 2026-03-03 | Christopher Paul German | Corporate Controller & CAO | MIXED | — | — |
| 2026-03-02 | Hunter C Smith | Chief Financial Officer | M | — | — |
| 2026-02-19 | Hunter C Smith | Chief Financial Officer | Sell | — | — |
| 2026-02-18 | Yann Mazabraud | EVP, Head of International | M | — | — |
| 2026-02-13 | Yann Mazabraud | EVP, Head of International | A | — | — |
| 2026-02-13 | Christopher Paul German | Corporate Controller & CAO | A | — | — |
| 2026-02-13 | Jennifer Kayden Lee | EVP, Head of North America | A | — | — |
| 2026-02-13 | Alastair Garfield | Chief Scientific Officer | A | — | — |
| 2026-02-13 | David P Meeker | President and CEO | A | — | — |
| 2026-02-13 | Pamela J. Cramer | Chief Human Resources Officer | A | — | — |
| 2026-02-13 | Joseph Shulman | Chief Technical Officer | A | — | — |
| 2026-02-12 | Hunter C Smith | Chief Financial Officer | Sell | — | — |
| 2026-02-06 | Hunter C Smith | Chief Financial Officer | Sell | — | — |
| 2026-02-03 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| 2026-02-03 | Christopher Paul German | Corporate Controller & CAO | MIXED | — | — |
| 2026-02-03 | Hunter C Smith | Chief Financial Officer | MIXED | — | — |
| 2026-02-03 | Alastair Garfield | Chief Scientific Officer | MIXED | — | — |
| 2026-02-03 | Jennifer Kayden Lee | EVP, Head of North America | MIXED | — | — |
| 2026-02-03 | Pamela J. Cramer | Chief Human Resources Officer | MIXED | — | — |
| 2026-02-03 | David P Meeker | President and CEO | MIXED | — | — |
| 2026-02-03 | Yann Mazabraud | EVP, Head of International | M | — | — |
| 2025-12-15 | Pamela J. Cramer | Chief Human Resources Officer | MIXED | — | — |
| 2025-11-24 | Pamela J. Cramer | Chief Human Resources Officer | MIXED | — | — |
| 2025-11-12 | Pamela J. Cramer | Chief Human Resources Officer | MIXED | — | — |
| 2025-11-03 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| 2025-10-30 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| 2025-10-20 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| 2025-09-04 | Joseph Shulman | Chief Technical Officer | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 5,210,088 | — |
| — | 10%+ Owner | 4,909,956 | — |
| — | — | 4,568,464 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 4,359,956 | — |
| — | 10%+ Owner | 3,981,437 | — |
| — | 10%+ Owner | 2,769,659 | — |
| — | 10%+ Owner | 2,751,679 | — |
| — | 10%+ Owner | 2,596,392 | — |
| — | 10%+ Owner | 1,432,248 | — |
| — | 10%+ Owner | 1,387,639 | — |
| — | — | 1,081,051 | — |
| — | Director | 909,258 | — |
| — | 10%+ Owner | 813,099 | — |
| — | CEO & President | 558,250 | — |
| — | 10%+ Owner | 545,256 | — |
| — | 10%+ Owner | 468,505 | — |
| — | President and CEO | 252,073 | — |
| — | Chief Financial Officer | 114,024 | — |
| — | 10%+ Owner | 99,105 | — |
| — | EVP, Head of International | 55,655 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the RYTM quote page; the site-wide leaderboard is on the insider transactions hub.