Form 4 Tracker
Disc Medicine, Inc.
IRON

34 insider filings · Latest: Aug 12, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Oct 17, 2025Oct 17 8:42 PMAtlas Venture Fund X, LP
Proposed Sale
50,000$74.36$3.7M

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Oct 16, 2025Oct 16 8:46 PMAtlas Venture Fund X, LP
Proposed Sale
1,425$76.98$109.7K

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Oct 16, 2025Oct 16 8:46 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
1,425$76.98$109.7K

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Oct 15, 2025Oct 15 9:00 PMAtlas Venture Fund X, LP
Proposed Sale
22,160$73.00$1.6M

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Oct 15, 2025Oct 15 9:00 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
22,160$73.00$1.6M

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Oct 8, 2025Oct 8 8:55 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
71,961$67.89$4.9M

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Oct 7, 2025Oct 7 9:16 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
18,039$69.28$1.2M

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Aug 22, 2025Aug 22 8:29 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
2,287$59.75$136.6K

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Aug 22, 2025Aug 22 8:25 PMAtlas Venture Fund X, L.P.
Proposed Sale
4,080$59.75$243.8K

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Aug 14, 2025Aug 14 8:24 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
7,212$61.10$440.7K

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Aug 14, 2025Aug 14 8:16 PMAtlas Venture Fund X, L.P.
Proposed Sale
12,862$61.10$785.9K

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Aug 13, 2025Aug 13 8:26 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
24,962$59.03$1.5M

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Aug 13, 2025Aug 13 8:24 PMAtlas Venture Fund X, L.P.
Proposed Sale
44,520$59.03$2.6M

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Aug 5, 2025Aug 5 8:31 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
395$59.79$23.6K

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Aug 5, 2025Aug 5 8:24 PMAtlas Venture Fund X, L.P.
Proposed Sale
705$59.79$42.2K

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Jul 30, 2025Jul 30 8:18 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
8,492$59.80$507.8K

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Jul 30, 2025Jul 30 8:14 PMAtlas Venture Fund X, L.P.
Proposed Sale
15,146$59.80$905.7K

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Jul 24, 2025Jul 24 8:27 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
13,033$60.94$794.2K

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Jul 24, 2025Jul 24 8:25 PMAtlas Venture Fund X, L.P.
Proposed Sale
23,245$60.94$1.4M

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Jul 23, 2025Jul 23 8:30 PMAtlas Venture Opportunity Fund I, L.P.
Proposed Sale
29,837$60.74$1.8M

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Aug 12, 2026Aug 14 11:14 PMJonathan Yen-Wen YuChief Operating Officer
Option Exercise
804$13.5022,943(D)

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Aug 6, 2026Aug 7 9:32 PMRahul KharaChief Legal Officer
Option Exercise
5,000$14.6949,804(D)

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Jul 13, 2026Jul 14 10:32 PMJohn D QuiselDirector, Chief Executive Officer
Option Exercise
33,000$13.50124,586(D)

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Jul 7, 2026Jul 9 11:35 PMJonathan Yen-Wen YuChief Operating Officer
Option Exercise
100$13.5023,747(D)

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Jun 29, 2026Jun 30 9:49 PMRahul KharaChief Legal Officer
Option Exercise
1,649$14.6954,804(D)

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Jun 26, 2026Jun 30 9:49 PMRahul KharaChief Legal Officer
Option Exercise
851$14.6956,453(D)

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Jun 26, 2026Jun 30 9:45 PMJonathan Yen-Wen YuChief Operating Officer
Option Exercise
300$13.5023,847(D)

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Jun 22, 2026Jun 25 12:34 AMJonathan Yen-Wen YuChief Operating Officer
Option Exercise
9,700$13.5024,147(D)

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Jun 18, 2026Jun 23 9:21 PMRahul KharaChief Legal Officer
Option Exercise
7,500$14.6957,304(D)

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Jun 18, 2026Jun 23 9:16 PMJohn D QuiselDirector, Chief Executive Officer
Option Exercise
34,000$9.8641,375(D)

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Jun 18, 2026Jun 23 9:04 PMWilliam Richard WhiteDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 9:01 PMLiam RatcliffeDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 9:00 PMDonald William NicholsonDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 8:59 PMGeorges GemayelDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 8:58 PMMark ChinDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 8:56 PMKevin BittermanDirector
Grant/Award
6,212$70.796,212(D)

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Jun 18, 2026Jun 23 8:54 PMNadim AhmedDirector
Grant/Award
5,176$70.795,176(D)

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Jun 16, 2026Jun 18 8:43 PMJonathan Yen-Wen YuChief Operating Officer
Option Exercise
18,612$9.8631,951(D)

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Feb 10, 2026Feb 12 12:50 AMRahul KharaChief Legal Officer
Grant/Award
25,500$74.7525,500(D)

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Feb 10, 2026Feb 12 12:46 AMPamela StephensonChief Commercial Officer
Grant/Award
25,500$74.7525,500(D)

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