Dudediligence.

Disc Medicine, Inc

IRONNASDAQ · Pharmaceutical Preparations
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$222.5M

76 notices · 2,568,074 sh

Oct 2025 to Oct 2026

Reported ·

$119.6M

114 sales · 0 buys

Oct 2025 to Sep 2026

The two figures cover different periods.

63 of 114 reported sales carry the 10b5-1 box. Together they are 3.86% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Sep 2026N2025DJ2026FMAMJJASO2026-09-11: KEVIN J BITTERMAN, Form 1442026-09-04: Atlas Venture Fund XII, LP, Form 1442026-09-04: Atlas Venture Opportunity Fund II, LP, Form 1442026-09-04: Atlas Venture Opportunity Fund I, LP, Form 1442026-09-04: Atlas Venture Fund X, LP, Form 1442026-09-03: Atlas Venture Fund XII, LP, Form 1442026-09-03: Atlas Venture Opportunity Fund II, LP, Form 1442026-09-03: Atlas Venture Opportunity Fund I, LP, Form 1442026-09-03: Atlas Venture Fund X, LP, Form 1442026-09-02: Atlas Venture Fund XII, LP, Form 1442026-09-02: Atlas Venture Opportunity Fund II, LP, Form 1442026-09-02: Atlas Venture Opportunity Fund I, LP, Form 1442026-09-02: Atlas Venture Fund X, LP, Form 1442026-08-17: JOHN QUISEL, Form 1442026-08-06: RAHUL KHARA, Form 1442026-07-13: JOHN QUISEL, Form 1442026-07-07: JONATHAN YU, Form 1442026-06-26: RAHUL KHARA, Form 1442026-06-22: JONATHAN YU, Form 1442026-06-18: JOHN QUISEL, Form 1442026-06-18: RAHUL KHARA, Form 1442026-06-16: JONATHAN YU, Form 1442026-04-13: WILLIAM SAVAGE, Form 1442026-03-02: WILLIAM SAVAGE, Form 1442026-02-25: JEAN FRANCHI, Form 1442026-02-18: JEAN FRANCHI, Form 1442026-02-17: Khara Rahul, Form 1442026-02-17: Stephenson Pamela, Form 1442026-02-17: Savage William Jacob, Form 1442026-02-17: Yu Jonathan Yen-Wen, Form 1442026-02-17: Franchi Jean M., Form 1442026-02-17: Quisel John D, Form 1442026-01-02: RAHUL KHARA, Form 1442025-12-17: Atlas Venture Fund XII, LP, Form 1442025-12-17: Atlas Venture Opportunity Fund II, LP, Form 1442025-12-17: Atlas Venture Opportunity Fund I, LP, Form 1442025-12-17: Atlas Venture Fund X, LP, Form 1442025-12-17: AI DMI LLC, Form 1442025-12-16: Atlas Venture Opportunity Fund I, LP, Form 1442025-12-16: Atlas Venture Fund XII, LP, Form 1442025-12-16: Atlas Venture Opportunity Fund II, LP, Form 1442025-12-16: Atlas Venture Fund X, LP, Form 1442025-12-16: AI DMI LLC, Form 1442025-12-16: Atlas Venture Opportunity Fund I, L.P., Form 1442025-12-16: Atlas Venture Fund X, L.P., Form 1442025-12-16: Atlas Venture Opportunity Fund II, L.P., Form 1442025-12-16: Atlas Venture Associates XII, L.P., Form 1442025-12-15: KEVIN J BITTERMAN, Form 1442025-12-15: WILLIAM SAVAGE, Form 1442025-12-15: Atlas Venture Opportunity Fund II, LP, Form 1442025-12-15: Atlas Venture Fund XII, LP, Form 1442025-12-15: Atlas Venture Opportunity Fund I, LP, Form 1442025-12-15: Atlas Venture Fund X, LP, Form 1442025-12-15: AI DMI LLC, Form 1442025-12-15: Atlas Venture Opportunity Fund II, L.P., Form 1442025-12-15: Atlas Venture Opportunity Fund I, L.P., Form 1442025-12-15: Atlas Venture Fund X, L.P., Form 1442025-12-15: Atlas Venture Associates XII, L.P., Form 1442025-12-12: Atlas Venture Fund XII, LP, Form 1442025-12-12: Atlas Venture Opportunity Fund II, LP, Form 1442025-12-12: Atlas Venture Opportunity Fund I, LP, Form 1442025-12-12: Atlas Venture Fund X, LP, Form 1442025-12-12: AI DMI LLC, Form 1442025-12-11: JOHN QUISEL, Form 1442025-11-11: JONATHAN YU, Form 1442025-10-20: OrbiMed Private Investments VI, LP, Form 1442025-10-20: OrbiMed Genesis Master Fund, L.P., Form 1442025-10-20: OrbiMed Private Investments VIII, LP, Form 1442025-10-17: Atlas Venture Fund X, LP, Form 1442025-10-17: Atlas Venture Opportunity Fund II, L.P., Form 1442025-10-17: Atlas Venture Opportunity Fund I, L.P., Form 1442025-10-16: Atlas Venture Fund X, LP, Form 1442025-10-16: Atlas Venture Opportunity Fund I, L.P., Form 1442025-10-15: Atlas Venture Fund X, LP, Form 1442025-10-15: Atlas Venture Opportunity Fund I, L.P., Form 1442025-10-08: Atlas Venture Opportunity Fund I, L.P., Form 1442025-10-08: Bitterman Kevin, sold2025-10-15: Bitterman Kevin, sold2025-10-22: Blavatnik Len, sold2025-11-11: Yu Jonathan Yen-Wen, sold2025-12-11: Quisel John D, sold2025-12-12: Bitterman Kevin, sold2025-12-15: Savage William Jacob, sold2025-12-17: Bitterman Kevin, sold2026-01-02: Khara Rahul, sold2026-01-20: Khara Rahul, sold2026-02-17: Quisel John D, sold2026-02-17: Yu Jonathan Yen-Wen, sold2026-02-17: Savage William Jacob, sold2026-02-17: Stephenson Pamela, sold2026-02-17: Khara Rahul, sold2026-02-17: Franchi Jean M., sold2026-02-25: Franchi Jean M., sold2026-03-02: Savage William Jacob, sold2026-04-13: Franchi Jean M., sold2026-04-13: Savage William Jacob, sold2026-06-16: Yu Jonathan Yen-Wen, sold2026-06-18: Quisel John D, sold2026-06-18: Khara Rahul, sold2026-06-22: Yu Jonathan Yen-Wen, sold2026-06-26: Yu Jonathan Yen-Wen, sold2026-06-26: Khara Rahul, sold2026-07-07: Yu Jonathan Yen-Wen, sold2026-07-13: Quisel John D, sold2026-08-06: Khara Rahul, sold2026-08-12: Yu Jonathan Yen-Wen, sold2026-08-17: Quisel John D, sold2026-08-24: Yu Jonathan Yen-Wen, sold2026-09-01: Bitterman Kevin, sold2026-09-04: Bitterman Kevin, sold2026-09-11: Bitterman Kevin, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-09-11KEVIN J BITTERMAN, Officer$1,902,505
27,136 shno plan date144 ↗
Form 4, 2026-09-15: sold 27,136 at $70.11 Form 4 ↗
2026-09-04Atlas Venture Fund XII, LP, Shareholder$1,429
18 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-04Atlas Venture Opportunity Fund II, LP, Shareholder$60,242
759 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-04Atlas Venture Opportunity Fund I, LP, Shareholder$72,385
912 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-04Atlas Venture Fund X, LP, Shareholder$175,566
2,212 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-03Atlas Venture Fund XII, LP, Shareholder$4,323
54 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-03Atlas Venture Opportunity Fund II, LP, Shareholder$187,237
2,339 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-03Atlas Venture Opportunity Fund I, LP, Shareholder$224,941
2,810 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-03Atlas Venture Fund X, LP, Shareholder$546,101
6,822 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-02Atlas Venture Fund XII, LP, Shareholder$40,358
513 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-02Atlas Venture Opportunity Fund II, LP, Shareholder$1,738,528
22,099 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-02Atlas Venture Opportunity Fund I, LP, Shareholder$2,088,846
26,552 shno plan dateForm 4s on file end Sep 23144 ↗
2026-09-02Atlas Venture Fund X, LP, Shareholder$5,071,068
64,460 shno plan dateForm 4s on file end Sep 23144 ↗
2026-08-17JOHN QUISEL, Chief Executive Officer$2,601,720
33,000 shplan 2026-03-12144 ↗
Form 4, 2026-08-18: sold 33,000 at $79.15 Form 4 ↗
2026-08-06RAHUL KHARA, Chief Legal Officer$394,550
5,000 shplan 2026-03-19144 ↗
Form 4, 2026-08-07: sold 5,000 at $80.00 Form 4 ↗
2026-07-13JOHN QUISEL, Chief Executive Officer$2,527,470
33,000 shplan 2026-03-12144 ↗
Form 4, 2026-07-14: sold 33,000 at $74.96 Form 4 ↗
2026-07-07JONATHAN YU, Chief Operating Officer$770,100
10,000 shplan 2026-03-17144 ↗
Form 4, 2026-07-09: sold 100 at $82.50 Form 4 ↗
2026-06-26RAHUL KHARA, Chief Legal Officer$175,400
2,500 shplan 2026-03-19144 ↗
Form 4, 2026-06-30: sold 2,500 at $75.00 Form 4 ↗
2026-06-22JONATHAN YU, Chief Operating Officer$707,900
10,000 shplan 2026-03-17144 ↗
Form 4, 2026-06-24: sold 9,700 at $72.66 Form 4 ↗
2026-06-18JOHN QUISEL, Chief Executive Officer$2,387,140
34,000 shplan 2026-03-12144 ↗
Form 4, 2026-06-23: sold 34,000 at $70.22 Form 4 ↗
2026-06-18RAHUL KHARA, Chief Legal Officer$526,575
7,500 shplan 2026-03-19144 ↗
Form 4, 2026-06-23: sold 7,500 at $70.22 Form 4 ↗
2026-06-16JONATHAN YU, Chief Operating Officer$1,304,515
18,612 shplan 2026-03-17144 ↗
Form 4, 2026-06-18: sold 18,612 at $69.19 Form 4 ↗
2026-04-13WILLIAM SAVAGE, Chief Medical Officer$380,080
5,731 shplan 2025-10-02144 ↗
Form 4, 2026-04-15: sold 5,731 at $66.38 Form 4 ↗
2026-03-02WILLIAM SAVAGE, Chief Medical Officer$491,522
7,378 shplan 2025-10-02144 ↗
Form 4, 2026-03-04: sold 7,378 at $65.88 Form 4 ↗
2026-02-25JEAN FRANCHI, Chief Financial Officer$464,062
7,010 shplan 2025-09-25144 ↗
Form 4, 2026-02-27: sold 353 at $69.06 Form 4 ↗
2026-02-18JEAN FRANCHI, Chief Financial Officer$464,301
7,081 shplan 2025-09-25no Form 4 on file144 ↗
2026-02-17Khara Rahul, Chief Legal Officer$159,625
2,853 shno plan date144 ↗
Form 4, 2026-02-17: sold 2,853 at $62.86 Form 4 ↗
2026-02-17Stephenson Pamela, Chief Commercial Officer$309,459
5,531 shno plan date144 ↗
Form 4, 2026-02-17: sold 5,531 at $62.86 Form 4 ↗
2026-02-17Savage William Jacob, Chief Medical Officer$182,173
3,256 shplan 2025-10-02144 ↗
Form 4, 2026-02-17: sold 3,256 at $62.86 Form 4 ↗
2026-02-17Yu Jonathan Yen-Wen, Chief Operating Officer$180,774
3,231 shno plan date144 ↗
Form 4, 2026-02-17: sold 3,231 at $62.86 Form 4 ↗
2026-02-17Franchi Jean M., Chief Financial Officer$227,996
4,075 shplan 2025-09-25144 ↗
Form 4, 2026-02-19: sold 11,156 at $64.52 Form 4 ↗
2026-02-17Quisel John D, Chief Executive Officer$742,121
13,264 shno plan date144 ↗
Form 4, 2026-02-17: sold 13,264 at $62.86 Form 4 ↗
2026-01-02RAHUL KHARA, Chief Legal Officer$595,575
7,500 shplan 2025-09-23144 ↗
Form 4, 2026-01-05: sold 6,500 at $78.68 Form 4 ↗
2025-12-17Atlas Venture Fund XII, LP, Shareholder$13,538
148 shno plan dateno Form 4 on file144 ↗
2025-12-17Atlas Venture Opportunity Fund II, LP, Shareholder$19,483
213 shno plan dateno Form 4 on file144 ↗
2025-12-17Atlas Venture Opportunity Fund I, LP, Shareholder$35,948
393 shno plan dateno Form 4 on file144 ↗
2025-12-17Atlas Venture Fund X, LP, Shareholder$74,822
818 shno plan dateno Form 4 on file144 ↗
2025-12-17AI DMI LLC, Affiliate$4,375
50 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Opportunity Fund I, LP, Shareholder$1,002,616
10,898 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Fund XII, LP, Shareholder$401,028
4,359 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Opportunity Fund II, LP, Shareholder$521,272
5,666 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Fund X, LP, Shareholder$2,085,272
22,666 shno plan dateno Form 4 on file144 ↗
2025-12-16AI DMI LLC, Affiliate$3,637,670
39,769 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Opportunity Fund I, L.P., Shareholder$2,286,750
25,000 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Fund X, L.P., Shareholder$4,756,440
52,000 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Opportunity Fund II, L.P., Shareholder$1,189,110
13,000 shno plan dateno Form 4 on file144 ↗
2025-12-16Atlas Venture Associates XII, L.P., Shareholder$914,700
10,000 shno plan dateno Form 4 on file144 ↗
2025-12-15KEVIN J BITTERMAN, Officer$643,061
7,000 shno plan date144 ↗
Form 4, 2025-12-16: sold 184,123 at $91.56 Form 4 ↗
2025-12-15WILLIAM SAVAGE, Chief Medical Officer$1,202,592
13,093 shplan 2025-06-26144 ↗
Form 4, 2025-12-16: sold 13,093 at $91.22 Form 4 ↗
2025-12-15Atlas Venture Opportunity Fund II, LP, Shareholder$735,627
8,009 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Fund XII, LP, Shareholder$565,796
6,160 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Opportunity Fund I, LP, Shareholder$1,414,582
15,401 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Fund X, LP, Shareholder$2,942,415
32,035 shno plan dateno Form 4 on file144 ↗
2025-12-15AI DMI LLC, Affiliate$537,556
5,843 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Opportunity Fund II, L.P., Shareholder$814,292
8,851 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Opportunity Fund I, L.P., Shareholder$1,603,836
17,433 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Fund X, L.P., Shareholder$3,392,684
36,877 shno plan dateno Form 4 on file144 ↗
2025-12-15Atlas Venture Associates XII, L.P., Shareholder$629,188
6,839 shno plan dateno Form 4 on file144 ↗
2025-12-12Atlas Venture Fund XII, LP, Shareholder$887,422
9,481 shno plan dateno Form 4 on file144 ↗
2025-12-12Atlas Venture Opportunity Fund II, LP, Shareholder$1,153,620
12,325 shno plan dateno Form 4 on file144 ↗
2025-12-12Atlas Venture Opportunity Fund I, LP, Shareholder$2,218,414
23,701 shno plan dateno Form 4 on file144 ↗
2025-12-12Atlas Venture Fund X, LP, Shareholder$4,614,386
49,299 shno plan dateno Form 4 on file144 ↗
2025-12-12AI DMI LLC, Affiliate$2,699,288
29,388 shno plan dateno Form 4 on file144 ↗
2025-12-11JOHN QUISEL, Chief Executive Officer$3,714,000
40,000 shplan 2025-02-13144 ↗
Form 4, 2025-12-15: sold 40,000 at $93.05 Form 4 ↗
2025-11-11JONATHAN YU, Chief Operating Officer$2,507,400
30,000 shplan 2025-07-22144 ↗
Form 4, 2025-11-13: sold 30,000 at $84.70 Form 4 ↗
2025-10-20OrbiMed Private Investments VI, LP, Shareholder$43.4M
482,308 shno plan dateno Form 4 on file144 ↗
2025-10-20OrbiMed Genesis Master Fund, L.P., Shareholder$16.8M
186,541 shno plan dateno Form 4 on file144 ↗
2025-10-20OrbiMed Private Investments VIII, LP, Shareholder$67.1M
746,171 shno plan dateno Form 4 on file144 ↗
2025-10-17Atlas Venture Fund X, LP, Shareholder$3,718,000
50,000 shno plan dateno Form 4 on file144 ↗
2025-10-17Atlas Venture Opportunity Fund II, L.P., Shareholder$3,147,900
35,000 shno plan dateno Form 4 on file144 ↗
2025-10-17Atlas Venture Opportunity Fund I, L.P., Shareholder$3,147,900
35,000 shno plan dateno Form 4 on file144 ↗
2025-10-16Atlas Venture Fund X, LP, Shareholder$109,697
1,425 shno plan dateno Form 4 on file144 ↗
2025-10-16Atlas Venture Opportunity Fund I, L.P., Shareholder$109,697
1,425 shno plan dateno Form 4 on file144 ↗
2025-10-15Atlas Venture Fund X, LP, Shareholder$1,617,680
22,160 shno plan dateno Form 4 on file144 ↗
2025-10-15Atlas Venture Opportunity Fund I, L.P., Shareholder$1,617,680
22,160 shno plan dateno Form 4 on file144 ↗
2025-10-08Atlas Venture Opportunity Fund I, L.P., Shareholder$4,885,432
71,961 shno plan dateno Form 4 on file144 ↗