Jonathan Yen-Wen Yu is COO at Disc Medicine, Inc. (IRON). They have made 2 open-market trades across 1 company since 2025, most recently 2026-08-25.
CIK 0001951849
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| IRON | 54,324 | $3.1M |
Shares reported on the most recent Form 4, priced at the 2026-08-26 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IRON | SELL · 10b5-1 | 2026-08-24 | 2026-08-26 | $83.10 | $756K | -6.1% | -20.2% | — |
| IRON | SELL · 10b5-1 | 2026-08-12 | 2026-08-14 | $82.64 | $66K | +8.1% | -9.8% | — |
| IRON | SELL · 10b5-1 | 2026-07-07 | 2026-07-09 | $82.50 | $8K | -3.3% | +0.0% | -21.8% |
| IRON | SELL · 10b5-1 | 2026-06-26 | 2026-06-30 | $72.50 | $22K | +4.0% | +8.4% | -11.1% |
| IRON | SELL · 10b5-1 | 2026-06-22 | 2026-06-24 | $72.66 | $705K | +12.9% | +5.0% | -3.1% |
| IRON | SELL · 10b5-1 | 2026-06-16 | 2026-06-18 | $69.19 | $1.3M | +3.4% | +2.5% | -5.4% |
| IRON | SELL | 2026-02-17 | 2026-02-17 | $62.86 | $203K | +4.5% | -7.2% | +4.9% |
| IRON | SELL · 10b5-1 | 2025-11-11 | 2025-11-13 | $84.70 | $5.1M | +6.4% | +5.7% | -17.3% |
| IRON | SELL | 2025-02-18 | 2025-02-20 | $54.58 | $176K | +0.5% | -2.5% | -11.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.