| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Operating Officer | Chief Business Officer
1 company
Jonathan Yen-Wen Yu is Chief Operating Officer at IRON. Jonathan Yen-Wen Yu's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $4.4M at current prices.
Historically, Jonathan Yen-Wen Yu's trades have earned a below-average insider score of 46/100 across 7 rated trades. Over a 12-month horizon, the one trade was not profitable, with an average 12-month return of -18.0%.
The IRON filings lean toward selling, a net 73,453 shares.
Jonathan Yen-Wen Yu has 13 Form 4 filings on record from December 2022 to August 2026, all as Chief Operating Officer at Disc Medicine (IRON), 2022–2026.
The 30 reported transactions were 14 open-market sales, 9 option exercises, 4 option or other derivative awards and 3 stock awards.
Counted by filing, the open-market trades come to no purchases and 9 sales worth about $5.7M.
The largest open-market sale was 30,000 shares of IRON at an average $84.70 on November 11, 2025, about $2.5M.
7 of the 9 sales since April 2023 were made under a Rule 10b5-1 trading plan; the other 2 were not.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 25, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 9,096 | $83.10 | $755,851.84 | -14.3% | - | - | |
| Aug 12, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 804 | $82.64 | $66,444.57 | -1.5% | - | - | |
| Jul 7, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 100 | $82.50 | $8,250.00 | -0.2% | -20.6% | - | |
| Jun 26, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 300 | $72.50 | $21,750.00 | -0.5% | -11.2% | - | |
| Jun 22, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 9,700 | $72.66 | $704,795.21 | -15.2% | -3.3% | - | |
| Jun 16, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 18,612 | $69.19 | $1,287,800.99 | -25.5% | -1.3% | - | |
| Feb 17, 2026 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sell | 3,231 | $62.86 | $203,100.66 | -5.6% | +2.0% | - | |
| Nov 11, 2025 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 30,000 | $84.70 | $2,540,922.64 | -42.5% | -14.6% | - | |
| Feb 18, 2025 | IRON Disc Medicine, Inc. | Chief Operating Officer | Sell | 1,610 | $54.58 | $87,873.80 | -3.8% | -9.1% | +18.0% |