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JY

Jonathan Yen-wen Yu

IRON
CHIEF OPERATING OFFICER · DISC MEDICINE, INC. · CIK 0001951849
FILING MIX · LIFETIME42%/58%
BUYS
14
SELLS
19
TOTAL VALUE
$5.33M
COMPANIES
1
ACTIVE SINCE
Dec 2022
HOLDINGS NOW
55,128
AVG SELL PX
$76.46
TRADE KIND
SHOWING 33 / 33
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
6 backtested trades · 8 horizons · 11 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Jonathan Yen-wen Yu, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d6+16.67%+2.67%-2.60%+5.26%+7.62%—
14d6+16.67%+4.91%-1.78%+6.70%+8.67%—
30d6+33.33%+3.78%-1.21%+4.99%+7.84%—
60d6+83.33%-8.37%-0.53%-7.84%-10.83%—
90d6+83.33%-10.35%+2.12%-12.47%-16.16%—
180d6+66.67%-8.39%+8.70%-17.08%-27.81%—
1y6(5 pending)+0.00%+18.03%+12.57%+5.46%+5.46%—
2y6(6 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
IRON · 55,128 shares · as of Aug 12, 2026
018,23436,46854,70272,9362023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 14 buys / 19 sellsCOVERAGE · 16 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
804$13.50$10.9K55,128Aug 12, 2026Aug 14, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
804——22,943Aug 12, 2026Aug 14, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE10b5-1
10b5-1 plan
804$82.64$66.4K54,324Aug 12, 2026Aug 14, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
100$13.50$1.4K54,424Jul 7, 2026Jul 9, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
100——23,747Jul 7, 2026Jul 9, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE10b5-1
10b5-1 plan
100$82.50$8.3K54,324Jul 7, 2026Jul 9, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE10b5-1
10b5-1 plan
300$72.50$21.8K54,324Jun 26, 2026Jun 30, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
300——23,847Jun 26, 2026Jun 30, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
300$13.50$4.0K54,624Jun 26, 2026Jun 30, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
9,700——24,147Jun 22, 2026Jun 24, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
9,700$13.50$130.9K64,024Jun 22, 2026Jun 24, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE10b5-1
10b5-1 plan
9,700$72.66$704.8K54,324Jun 22, 2026Jun 24, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
6,961$69.92$486.7K54,324Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
13,351$9.86$131.6K72,936Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
11,651$68.76$801.1K61,285Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
5,261$9.86$51.9K59,585Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
13,351——31,951Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
5,261——1,753Jun 16, 2026Jun 18, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
3,231$62.86$203.1K54,324Feb 17, 2026Feb 17, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
25,500——25,500Feb 10, 2026Feb 11, 2026 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
17,000——57,555Feb 10, 2026Feb 11, 2026 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
8,040$85.91$690.7K40,555Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASE
Chief Operating Officer
30,000$2.65$79.5K70,555Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
SALE10b5-1
10b5-1 plan
4,585$83.99$385.1K57,955Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
30,000——7,941Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
9,360$85.33$798.7K48,595Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
8,015$83.15$666.4K62,540Nov 11, 2025Nov 13, 2025 ↗View →
IRON
DISC MEDICINE, INC.
SALE
Chief Operating Officer
1,610$54.58$87.9K40,555Feb 18, 2025Feb 20, 2025 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
24,000——42,165Feb 10, 2025Feb 12, 2025 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
36,000——36,000Feb 10, 2025Feb 12, 2025 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
27,250——27,250Jan 10, 2024Mar 1, 2024 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
18,165——18,165Jan 10, 2024Mar 1, 2024 ↗View →
IRON
DISC MEDICINE, INC.
PURCHASEGRANT
Stock grant
33,847——33,847Dec 29, 2022Jan 3, 2023 ↗View →
Other insiders · IRON
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About this filer
CIK 0001951849
ROLE
Chief Operating Officer
PRIMARY
IRON
COMPANIES
1
ACTIVE SINCE
Dec 2022
MARKETPEEL · /INSIDER/0001951849DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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