Updated Jul 16, 2026 · Last SEC filing 2026-07-14
Disc Medicine, Inc. (IRON) has filed 15 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 3 Form 8-K material event filings were reported by IRON in the last 90 days. 7 Form 144 notices of proposed sale were filed for IRON stock. InsiderAlpha tracks every IRON SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Pharmaceutical Preparations (SIC 2834) |
|---|---|
| SEC CIK | 0001816736 |
| Form 4 filings (90d) | 15 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 7 |
| Latest Form 4 filing | 2026-07-14 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Quisel John D | Chief Executive Officer | S — Open-market sale [10b5-1] | 6.4K | $76.05 | $487K | SEC | |
| Quisel John D | Chief Executive Officer | S — Open-market sale [10b5-1] | 9.7K | $74.27 | $721K | SEC | |
| Quisel John D | Chief Executive Officer | M — Option exercise [10b5-1] | 7.4K | $13.50 | $100K | SEC | |
| Quisel John D | Chief Executive Officer | S — Open-market sale [10b5-1] | 16.9K | $74.95 | $1.27M | SEC | |
| Quisel John D | Chief Executive Officer | M — Option exercise [10b5-1] | 25.6K | $9.86 | $252K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | M — Option exercise | 100 | $13.50 | $1K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | S — Open-market sale | 100 | $82.50 | $8K | SEC | |
| Khara Rahul | Chief Legal Officer | M — Option exercise | 1.6K | $14.69 | $24K | SEC | |
| Khara Rahul | Chief Legal Officer | S — Open-market sale | 1.6K | $75.00 | $124K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | S — Open-market sale | 300 | $72.50 | $22K | SEC | |
| Khara Rahul | Chief Legal Officer | M — Option exercise | 851 | $14.69 | $13K | SEC | |
| Khara Rahul | Chief Legal Officer | S — Open-market sale | 851 | $75.00 | $64K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | M — Option exercise | 300 | $13.50 | $4K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | M — Option exercise | 9.7K | $13.50 | $131K | SEC | |
| Yu Jonathan Yen-Wen | Chief Operating Officer | S — Open-market sale | 9.7K | $72.66 | $705K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Disc Medicine, Inc. (IRON). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Yu Jonathan Yen-Wen | 15 | $2.34M |
| Quisel John D | 12 | $5.55M |
| Khara Rahul | 11 | $861K |
| White William Richard | 1 | — |
| Ratcliffe Liam | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in IRON insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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