Form 4: Rhythm Pharmaceuticals CFO Sells Shares
Insider Transaction (Form 4)
Hunter C Smith, Chief Financial Officer of Rhythm Pharmaceuticals, Inc., sold 62,774 shares of common stock on August 31, 2026.
Summary
- Option exercise/conversion: acquired 57,187 Common Stock at $25.79 ($1,474,853) on August 31, 2026; holds 176,798 after (Direct).
- Open-market sale: disposed of 23,072 Common Stock at $104.59 ($2,413,034) on August 31, 2026; holds 153,726 after (Direct).
- Open-market sale: disposed of 11,514 Common Stock at $105.37 ($1,213,232) on August 31, 2026; holds 142,212 after (Direct).
- Open-market sale: disposed of 28,188 Common Stock at $106.20 ($2,993,647) on August 31, 2026; holds 114,024 after (Direct).
- Option exercise/conversion: disposed of 57,187 Employee Stock Option (Right to Buy) on August 31, 2026; holds 3,813 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $6,619,913 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Hunter C Smith — Officer (Chief Financial Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-31 | Option exercise/conversion | Common Stock | 57,187 | $26 | $1.5M | 176,798 |
| 2026-08-31 | Open-market sale | Common Stock | 23,072 | $105 | $2.4M | 153,726 |
| 2026-08-31 | Open-market sale | Common Stock | 11,514 | $105 | $1.2M | 142,212 |
| 2026-08-31 | Open-market sale | Common Stock | 28,188 | $106 | $3.0M | 114,024 |
| 2026-08-31 | Option exercise/conversion | Employee Stock Option (Right to Buy) | 57,187 | — | — | 3,813 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-31 | Option exercise/conversion (57,187 shares) |
| 2026-08-31 | Open-market sale (23,072 shares) |
| 2026-08-31 | Open-market sale (11,514 shares) |
| 2026-08-31 | Open-market sale (28,188 shares) |
| 2026-08-31 | Option exercise/conversion (57,187 shares) |
Keywords
insider transaction, Form 4, RYTM, RHYTHM PHARMACEUTICALS, INC., bearish, Hunter C Smith
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