Kevin Bitterman sold $17M of IRON
director at Disc Medicine, Inc.. 184,123 shares at an average of $91.56, traded Dec 12, 2025, filed Dec 16, 2025.
Score components
- +15RoleDirector
- +25Trade size$16.9M at market
- +10Share of holdings soldSold 42% of holdings
- +15Cluster3 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001104659-25-121740, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -16,403 | $92.05 | $1.5M | 425,633 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -3,852 | $92.58 | $357k | 421,781 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -3,446 | $93.80 | $323k | 418,335 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -8,527 | $92.05 | $785k | 377,022 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -2,005 | $92.58 | $186k | 375,017 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -1,793 | $93.80 | $168k | 373,224 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -6,570 | $92.05 | $605k | 44,430 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -1,540 | $92.58 | $143k | 42,890 | Dec 16, 2025 |
| Dec 12, 2025 | SOpen-market sale Common Stockindirect: See footnote | -1,371 | $93.80 | $129k | 41,519 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -28,913 | $91.18 | $2.6M | 389,422 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -3,921 | $92.01 | $361k | 385,501 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -14,811 | $91.18 | $1.4M | 358,413 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -2,049 | $92.01 | $189k | 356,364 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -11,427 | $91.18 | $1.0M | 30,092 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stockindirect: See footnote | -1,572 | $92.01 | $145k | 28,520 | Dec 16, 2025 |
| Dec 15, 2025 | MOption exercise Common Stock | +7,000 | $13.50 | $95k | 7,000 | Dec 16, 2025 |
| Dec 15, 2025 | SOpen-market sale Common Stock | -7,000 | $91.87 | $643k | 0 | Dec 16, 2025 |
| Dec 16, 2025 | SOpen-market sale Common Stockindirect: See footnote | -35,898 | $91.24 | $3.3M | 349,603 | Dec 16, 2025 |
| Dec 16, 2025 | SOpen-market sale Common Stockindirect: See footnote | -18,666 | $91.24 | $1.7M | 337,698 | Dec 16, 2025 |
| Dec 16, 2025 | SOpen-market sale Common Stockindirect: See footnote | -14,359 | $91.24 | $1.3M | 14,161 | Dec 16, 2025 |
| Dec 15, 2025 | MOption exercise Stock Option (Right to Buy)derivative | -7,000 | $0.00 | $0 | 0 | Dec 16, 2025 |
Related signals
Other insiders at Disc Medicine, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 45Moderate | IRONsell Disc Medicine, Inc. | Kevin Bitterman director | $1.9M 27,136 shares | -100% | |
| 6Weak | Disc Medicine, Inc. | Kevin Bitterman director | $135k 1,689 shares | -1% | |
| 25Weak | Disc Medicine, Inc. | Kevin Bitterman director | $4.4M 54,496 shares | -16% | |
| 38Weak | Disc Medicine, Inc. | Kevin Bitterman director | $69k 754 shares | -0% | |
| 40Moderate | Disc Medicine, Inc. | William Jacob Savage Chief Medical Officer | $1.2M 13,093 shares | -15% | |
| 35Weak | Disc Medicine, Inc. | John D Quisel Chief Executive Officer | $3.7M 40,000 shares | -19% | |
| 20Weak | Disc Medicine, Inc. | Jonathan Yen-Wen Yu Chief Operating Officer | $2.5M 30,000 shares | -43% | |
| 50Moderate | Disc Medicine, Inc. | Ai Dmi LLC owner | $60M 744,047 shares | -21% | |
| 53Moderate | Disc Medicine, Inc. | Kevin Bitterman director | $8.0M 93,585 shares | -19% | |
| 45Moderate | IRONsell Disc Medicine, Inc. | Kevin Bitterman director | $6.3M 90,000 shares | -15% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.