15 insiders reported 170 Form 4 transactions for RHYTHM PHARMACEUTICALS, INC. (RYTM) over the past 18 months (most recent 2026-08-17). Recent activity: Garfield Alastair (Chief Scientific Officer) Sell 2,007 shares, Shulman Joseph (Chief Technical Officer) Buy 2,024 shares, Shulman Joseph (Chief Technical Officer) Sell 5,079 shares, Garfield Alastair (Chief Scientific Officer) Sell 1,556 shares, Garfield Alastair (Chief Scientific Officer) Sell 3,400 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Garfield Alastair | Chief Scientific Officer | Sell | 2,007 | $233,031 |
| 2026-08-17 | Shulman Joseph | Chief Technical Officer | Buy | 2,024 | $13,763 |
| 2026-08-17 | Shulman Joseph | Chief Technical Officer | Sell | 5,079 | $608,210 |
| 2026-08-17 | Garfield Alastair | Chief Scientific Officer | Sell | 1,556 | $182,170 |
| 2026-08-17 | Garfield Alastair | Chief Scientific Officer | Sell | 3,400 | $402,167 |
| 2026-08-17 | Garfield Alastair | Chief Scientific Officer | Sell | 800 | $95,335 |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 3,605 | $413,477 |
| 2026-08-14 | Lee Jennifer Kayden | EVP, Head of North America | Buy | 35,000 | $850,150 |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 2,300 | $257,138 |
| 2026-08-14 | Lee Jennifer Kayden | EVP, Head of North America | Buy | 21,601 | $146,887 |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 1,000 | $112,856 |
| 2026-08-14 | Lee Jennifer Kayden | EVP, Head of North America | Sell | 75,834 | $8.9M |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Buy | 46,625 | $317,050 |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 14,568 | $1.7M |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 18,208 | $2.1M |
| 2026-08-14 | Mazabraud Yann | EVP, Head of International | Sell | 17,319 | $2.0M |
| 2026-07-02 | Garfield Alastair | Chief Scientific Officer | Buy | 4,445 | $0 |
| 2026-07-02 | Garfield Alastair | Chief Scientific Officer | Sell | 2,150 | $237,382 |
| 2026-06-25 | MCGIRR DAVID W J | Director | Buy | 4,712 | $0 |
| 2026-06-25 | JEAN CHRISTOPHE | Director | Buy | 4,712 | $0 |
| 2026-06-25 | Arbuckle Stuart A | Director | Buy | 4,712 | $0 |
| 2026-06-25 | TETRAULT LYNN A. | Director | Buy | 4,712 | $0 |
| 2026-06-25 | GOOD JENNIFER L | Director | Buy | 4,712 | $0 |
| 2026-06-24 | TETRAULT LYNN A. | Director | Sell | 37,000 | $3.7M |
| 2026-06-24 | TETRAULT LYNN A. | Director | Buy | 37,000 | $1.0M |
Source: SEC Form 4 filings · as of 2026-08-17