Disc Medicine, Inc. (IRON) has 17 known insider and institutional holders on record. The largest holder is AI DMI LLC with 2,814,379 shares. Other notable holders include Quisel John D and Atlas Venture Fund X, L.P..
Over the last 12 months, insiders have made 43 transactions in IRON stock — 14 buys (valued at $19.29M) and 23 sells (valued at $66.21M). Insider selling has exceeded buying during this period.
IRON Insider Ownership
Top Holder
AI DMI LLC
2,814,379 shares
Buys (12 mo)
14
$19.29M value
Sells (12 mo)
23
$66.21M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Ai Dmi Llc |
10 Percent Owner |
2,814,379 |
2025-10-24 |
|
| 2 |
Quisel John D |
Chief Executive Officer |
226,064 |
2026-02-17 |
|
| 3 |
Atlas Venture Fund X, L.p. |
10 Percent Owner |
198,326 |
2024-01-25 |
|
| 4 |
Orbimed Advisors Llc |
Director |
186,541 |
2025-03-26 |
|
| 5 |
Savage William Jacob |
Chief Medical Officer |
85,211 |
2026-03-04 |
|
| 6 |
Stephenson Pamela |
Chief Commercial Officer |
80,998 |
2026-02-17 |
|
| 7 |
Franchi Jean M. |
Chief Financial Officer |
70,990 |
2026-02-27 |
|
| 8 |
Yu Jonathan Yen-wen |
Chief Operating Officer |
54,324 |
2026-02-17 |
|
| 9 |
Khara Rahul |
Chief Legal Officer |
52,173 |
2026-02-17 |
|
| 10 |
Bryce Joanne |
Chief Financial Officer |
23,665 |
2024-03-01 |
|
| 11 |
Bitterman Kevin |
Director |
14,013 |
2025-12-18 |
|
| 12 |
Chin Mark |
Director |
10,000 |
2025-06-13 |
|
| 13 |
Gemayel Georges |
Director |
10,000 |
2025-06-13 |
|
| 14 |
White William Richard |
Director |
10,000 |
2025-06-13 |
|
| 15 |
Ratcliffe Liam |
Director |
10,000 |
2025-06-13 |
|
| 16 |
Ashiya Mona |
Director |
10,000 |
2025-06-13 |
|
| 17 |
Nicholson Donald William |
Director |
10,000 |
2025-06-13 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-02 |
Savage William Jacob |
Chief Medical Officer |
Informative Sell |
2,986 |
$66.41 |
$198.3K |
| 2026-02-25 |
Franchi Jean M. |
Chief Financial Officer |
Informative Sell |
353 |
$69.06 |
$24.38K |
| 2026-02-18 |
Franchi Jean M. |
Chief Financial Officer |
Informative Sell |
3,684 |
$65.89 |
$242.73K |
| 2026-02-17 |
Franchi Jean M. |
Chief Financial Officer |
Informative Sell |
4,075 |
$62.86 |
$256.15K |
| 2026-02-17 |
Savage William Jacob |
Chief Medical Officer |
Informative Sell |
3,256 |
$62.86 |
$204.67K |
| 2026-02-17 |
Khara Rahul |
Chief Legal Officer |
Informative Sell |
2,853 |
$62.86 |
$179.34K |
| 2026-02-17 |
Yu Jonathan Yen-wen |
Chief Operating Officer |
Informative Sell |
3,231 |
$62.86 |
$203.1K |
| 2026-02-17 |
Stephenson Pamela |
Chief Commercial Officer |
Informative Sell |
5,531 |
$62.86 |
$347.68K |
| 2026-02-17 |
Quisel John D |
Chief Executive Officer |
Informative Sell |
13,264 |
$62.86 |
$833.78K |
| 2026-02-10 |
Savage William Jacob |
Chief Medical Officer |
RSU Award |
25,500 |
$74.75 |
$1.91M |
| 2026-02-10 |
Khara Rahul |
Chief Legal Officer |
RSU Award |
25,500 |
$74.75 |
$1.91M |
| 2026-02-10 |
Yu Jonathan Yen-wen |
Chief Operating Officer |
RSU Award |
25,500 |
$74.75 |
$1.91M |
| 2026-02-10 |
Stephenson Pamela |
Chief Commercial Officer |
RSU Award |
25,500 |
$74.75 |
$1.91M |
| 2026-02-10 |
Franchi Jean M. |
Chief Financial Officer |
RSU Award |
25,500 |
$74.75 |
$1.91M |
| 2026-02-10 |
Quisel John D |
Chief Executive Officer |
RSU Award |
82,800 |
$74.75 |
$6.19M |
| 2026-01-20 |
Khara Rahul |
Chief Legal Officer |
Option Exercise (Sell) |
1,000 |
$13.50 |
$13.5K |
| 2026-01-02 |
Khara Rahul |
Chief Legal Officer |
Option Exercise (Sell) |
6,500 |
$13.50 |
$87.75K |
| 2025-12-22 |
Savage William Jacob |
Chief Medical Officer |
Option Exercise (Sell) |
219 |
$9.86 |
$2.16K |
| 2025-12-19 |
Quisel John D |
Chief Executive Officer |
Option Exercise |
12,300 |
$1.01 |
$12.42K |
| 2025-12-17 |
Bitterman Kevin |
Director |
Informative Sell |
148 |
$91.47 |
$13.54K |
| 2025-12-15 |
Savage William Jacob |
Chief Medical Officer |
Informative Sell |
300 |
$92.23 |
$27.67K |
| 2025-12-16 |
Bitterman Kevin |
Director |
Informative Sell |
14,359 |
$91.24 |
$1.31M |
| 2025-12-15 |
Bitterman Kevin |
Director |
Option Exercise (Sell) |
7,000 |
$13.50 |
$94.5K |
| 2025-12-12 |
Bitterman Kevin |
Director |
Informative Sell |
1,371 |
$93.80 |
$128.6K |
| 2025-12-11 |
Quisel John D |
Chief Executive Officer |
Option Exercise (Sell) |
40,000 |
$9.86 |
$394.4K |
