Form 4: Disc Medicine COO Sells Shares
Insider Transaction (Form 4)
Jonathan Yen-Wen Yu, Chief Operating Officer of Disc Medicine, Inc., sold 9,096 shares of common stock on August 24, 2026.
Summary
- Option exercise/conversion: acquired 300 Common Stock at $13.50 ($4,050) on August 24, 2026; holds 54,624 after (Direct).
- Open-market sale: disposed of 300 Common Stock at $82.53 ($24,760) on August 24, 2026; holds 54,324 after (Direct).
- Option exercise/conversion: acquired 8,796 Common Stock at $13.50 ($118,746) on August 25, 2026; holds 63,120 after (Direct).
- Open-market sale: disposed of 8,796 Common Stock at $83.12 ($731,092) on August 25, 2026; holds 54,324 after (Direct).
- Option exercise/conversion: disposed of 300 Stock Option (Right to Buy) on August 24, 2026; holds 22,643 after (Direct).
- Option exercise/conversion: disposed of 8,796 Stock Option (Right to Buy) on August 25, 2026; holds 13,847 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $755,852 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Jonathan Yen-Wen Yu — Officer (Chief Operating Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-24 | Option exercise/conversion | Common Stock | 300 | $14 | $4.0K | 54,624 |
| 2026-08-24 | Open-market sale | Common Stock | 300 | $83 | $24.8K | 54,324 |
| 2026-08-25 | Option exercise/conversion | Common Stock | 8,796 | $14 | $118.7K | 63,120 |
| 2026-08-25 | Open-market sale | Common Stock | 8,796 | $83 | $731.1K | 54,324 |
| 2026-08-24 | Option exercise/conversion | Stock Option (Right to Buy) | 300 | — | — | 22,643 |
| 2026-08-25 | Option exercise/conversion | Stock Option (Right to Buy) | 8,796 | — | — | 13,847 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-24 | Option exercise/conversion (300 shares) |
| 2026-08-24 | Open-market sale (300 shares) |
| 2026-08-25 | Option exercise/conversion (8,796 shares) |
| 2026-08-25 | Open-market sale (8,796 shares) |
| 2026-08-24 | Option exercise/conversion (300 shares) |
| 2026-08-25 | Option exercise/conversion (8,796 shares) |
Keywords
insider transaction, Form 4, IRON, Disc Medicine, Inc., bearish, Jonathan Yen-Wen Yu
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