Disc Medicine, Inc. (IRON) Insider Trading
Directors, officers and holders of more than 10% of IRON report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 376 transactions on file: 0 with code P, 32 with code S and 18 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 21, 2026 | Bitterman Kevin | Director | S Sale | 13,783 | $80.23 | $1,105,810 |
| Oct 21, 2026 | Bitterman Kevin | Director | S Sale | 11,470 | $80.23 | $920,238 |
| Oct 21, 2026 | Bitterman Kevin | Director | S Sale | 266 | $80.23 | $21,341 |
| Oct 20, 2026 | Bitterman Kevin | Director | S Sale | 55 | $79.95 | $4,397 |
| Oct 20, 2026 | Bitterman Kevin | Director | S Sale | 2,388 | $79.95 | $190,921 |
| Oct 20, 2026 | Bitterman Kevin | Director | S Sale | 2,869 | $79.95 | $229,377 |
| Oct 19, 2026 | Bitterman Kevin | Director | S Sale | 4,942 | $79.97 | $395,212 |
| Oct 19, 2026 | Bitterman Kevin | Director | S Sale | 115 | $79.97 | $9,197 |
| Oct 19, 2026 | Bitterman Kevin | Director | S Sale | 5,937 | $79.97 | $474,782 |
| Sep 15, 2026 | Quisel John D | Chief Executive Officer | M Exercise | 36,000 | $1.01 | $36,360 |
| Sep 15, 2026 | Quisel John D | Chief Executive Officer | M Exercise | 36,000 | Not measured | Not measured |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 10,000 | Not measured | Not measured |
| Sep 11, 2026 | Bitterman Kevin | Director | S Sale | 27,136 | $70.11 | $1,902,505 |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 7,136 | Not measured | Not measured |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 10,000 | $50.86 | $508,600 |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 7,136 | $45.69 | $326,044 |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 10,000 | $38.85 | $388,500 |
| Sep 11, 2026 | Bitterman Kevin | Director | M Exercise | 10,000 | Not measured | Not measured |
| Sep 4, 2026 | Bitterman Kevin | Director | S Sale | 18 | $79.96 | $1,439 |
| Sep 4, 2026 | Bitterman Kevin | Director | S Sale | 912 | $79.96 | $72,924 |
| Sep 4, 2026 | Bitterman Kevin | Director | S Sale | 759 | $79.96 | $60,690 |
| Sep 3, 2026 | Bitterman Kevin | Director | S Sale | 2,810 | $79.98 | $224,744 |
| Sep 3, 2026 | Bitterman Kevin | Director | S Sale | 2,339 | $79.98 | $187,073 |
| Sep 3, 2026 | Bitterman Kevin | Director | S Sale | 54 | $79.98 | $4,319 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 9 | $80.98 | $729 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 26,542 | $80.17 | $2,127,872 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 2 | $80.98 | $162 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 22,090 | $80.17 | $1,770,955 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 511 | $80.17 | $40,967 |
| Sep 2, 2026 | Bitterman Kevin | Director | S Sale | 10 | $80.98 | $810 |
| Sep 1, 2026 | Bitterman Kevin | Director | S Sale | 70 | $79.95 | $5,597 |
| Sep 1, 2026 | Bitterman Kevin | Director | S Sale | 1 | $79.95 | $80 |
| Sep 1, 2026 | Bitterman Kevin | Director | S Sale | 58 | $79.95 | $4,637 |
| Aug 25, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | S Sale | 8,796 | $83.12 | $731,092 |
| Aug 25, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 8,796 | $13.50 | $118,746 |
| Aug 25, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 8,796 | Not measured | Not measured |
| Aug 24, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 300 | $13.50 | $4,050 |
| Aug 24, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 300 | Not measured | Not measured |
| Aug 24, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | S Sale | 300 | $82.53 | $24,760 |
| Aug 17, 2026 | Quisel John D | Chief Executive Officer | S Sale | 12,712 | $79.20 | $1,006,729 |
| Aug 17, 2026 | Quisel John D | Chief Executive Officer | M Exercise | 33,000 | $13.50 | $445,500 |
| Aug 17, 2026 | Quisel John D | Chief Executive Officer | S Sale | 11,888 | $79.84 | $949,162 |
| Aug 17, 2026 | Quisel John D | Chief Executive Officer | S Sale | 8,400 | $78.11 | $656,091 |
| Aug 17, 2026 | Quisel John D | Chief Executive Officer | M Exercise | 33,000 | Not measured | Not measured |
| Aug 12, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 804 | $13.50 | $10,854 |
| Aug 12, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | S Sale | 804 | $82.64 | $66,445 |
| Aug 12, 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | M Exercise | 804 | Not measured | Not measured |
| Aug 6, 2026 | Khara Rahul | Chief Legal Officer | S Sale | 5,000 | $80.00 | $400,000 |
| Aug 6, 2026 | Khara Rahul | Chief Legal Officer | M Exercise | 5,000 | Not measured | Not measured |
| Aug 6, 2026 | Khara Rahul | Chief Legal Officer | M Exercise | 5,000 | $14.69 | $73,450 |
The full Form 4 history is on the IRON company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.