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Disc Medicine, Inc.

IRON Net selling
CIK 0001816736 #1749 in the set updated 17 Sep 2026
Bought (120 mo)
$34.95M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$386.75M
$13.24M on a plan · $39.04M straight out of an exercise
Sold at will
$334.47M
183 of 357 sales
Net
−$351.80M
−$299.52M against sales at will

By person

20 insiders · 396 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Atlas Venture Fund X, L.P. entity
10% owner
—
$62.87M (35)
−$62.87M
1,600,512
$112.21M
—
Novo Holdings A/S entity
10% owner
—
$57.63M (1)
−$57.63M
1,090,772
$76.47M
−53.4%
Bitterman Kevin
Director
$8.00M (1)
$61.63M (86)
−$53.63M
27,440
$1.92M
−95.5%
AI DMI LLC entity
10% owner
$10.00M (1)
$59.87M (1)
−$49.87M
2,814,379
$197.32M
+4.0%
Ashiya Mona
Director
$5.50M (6)
$52.70M (39)
−$47.20M
186,541
$13.08M
−80.0%
ORBIMED ADVISORS LLC entity
Director
$5.50M (6)
$52.70M (39)
−$47.20M
186,541
$13.08M
—
Quisel John D
Chief Executive Officer
—
$17.45M (27) scheduled
−$17.45M
262,064
$18.37M
—
Yu Jonathan Yen-Wen
Chief Operating Officer
—
$5.68M (14) scheduled
−$5.68M
54,324
$3.81M
—
Savage William Jacob
Chief Medical Officer
—
$5.60M (29) scheduled
−$5.60M
79,480
$5.57M
+291.0%
FS Development Holdings, LLC entity
10% owner
$4.42M (1)
—
+$4.42M
883,000
$61.91M
—
Khara Rahul
Chief Legal Officer
—
$3.60M (22) scheduled
−$3.60M
52,324
$3.67M
+3,916%
White William Richard
Director
—
$2.96M (31) scheduled
−$2.96M
0
$0.00
—
Franchi Jean M.
Chief Financial Officer
—
$1.72M (10) scheduled
−$1.72M
64,333
$4.51M
—
Leonard Braden Michael
10% owner
$1.34M (4)
$47.03K (1)
+$1.29M
5,247,500
$367.90M
+21.6%
Bryce Joanne
Chief Financial Officer
—
$1.09M (10) scheduled
−$1.09M
23,665
$1.66M
+585.5%
MacDonald Brian Richard
Chief Innovation Officer
—
$711.14K (10) scheduled
−$711.14K
12,276
$860.67K
−53.1%
Stephenson Pamela
Chief Commercial Officer
—
$518.90K (2)
−$518.90K
80,998
$5.68M
—
Meyenburg Jason Patrick
Chief Executive Officer
$122.93K (1)
—
+$122.93K
13,000
$911.43K
—
Piekos Brian
CFO
$72.43K (1)
—
+$72.43K
17,615
$1.23M
—
Tananbaum James B.
Director
—
—
—
441,500
$30.95M
—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

86
Insider
Date
Role
Action
Shares
Price
Amount
Bitterman Kevin
11 Sep 2026
Director
Sold after exercise
27,136
$70.11
$1.90M
Yu Jonathan Yen-Wen
25 Aug 2026
Chief Operating Officer
Sold after exercise
8,796
$83.12
$731.09K
Yu Jonathan Yen-Wen
24 Aug 2026
Chief Operating Officer
Sold after exercise
300
$82.53
$24.76K
Quisel John D
17 Aug 2026
Chief Executive Officer
Sold after exercise
11,888
$79.84
$949.16K
Quisel John D
17 Aug 2026
Chief Executive Officer
Sold after exercise
12,712
$79.20
$1.01M
Quisel John D
17 Aug 2026
Chief Executive Officer
Sold after exercise
8,400
$78.11
$656.09K
Yu Jonathan Yen-Wen
12 Aug 2026
Chief Operating Officer
Sold after exercise
804
$82.64
$66.44K
Khara Rahul
6 Aug 2026
Chief Legal Officer
Sold after exercise
5,000
$80.00
$400.00K
Quisel John D
13 Jul 2026
Chief Executive Officer
Sold after exercise
6,400
$76.05
$486.73K
Quisel John D
13 Jul 2026
Chief Executive Officer
Sold after exercise
16,896
$74.95
$1.27M
Quisel John D
13 Jul 2026
Chief Executive Officer
Sold after exercise
9,704
$74.27
$720.74K
Yu Jonathan Yen-Wen
7 Jul 2026
Chief Operating Officer
Sold after exercise
100
$82.50
$8.25K
Khara Rahul
29 Jun 2026
Chief Legal Officer
Sold after exercise
1,649
$75.00
$123.68K
Yu Jonathan Yen-Wen
26 Jun 2026
Chief Operating Officer
Sold after exercise
300
$72.50
$21.75K
Khara Rahul
26 Jun 2026
Chief Legal Officer
Sold after exercise
851
$75.00
$63.83K
Yu Jonathan Yen-Wen
22 Jun 2026
Chief Operating Officer
Sold after exercise
9,700
$72.66
$704.80K
Quisel John D
18 Jun 2026
Chief Executive Officer
Sold after exercise
1,551
$71.61
$111.07K
Quisel John D
18 Jun 2026
Chief Executive Officer
Sold after exercise
9,522
$70.70
$673.21K
Quisel John D
18 Jun 2026
Chief Executive Officer
Sold after exercise
22,927
$69.92
$1.60M
Khara Rahul
18 Jun 2026
Chief Legal Officer
Sold after exercise
500
$71.62
$35.81K
Khara Rahul
18 Jun 2026
Chief Legal Officer
Sold after exercise
1,600
$70.73
$113.16K
Khara Rahul
18 Jun 2026
Chief Legal Officer
Sold after exercise
5,400
$69.94
$377.69K
Yu Jonathan Yen-Wen
16 Jun 2026
Chief Operating Officer
Sold after exercise
6,961
$69.92
$486.70K
Yu Jonathan Yen-Wen
16 Jun 2026
Chief Operating Officer
Sold after exercise
11,651
$68.76
$801.10K
Khara Rahul
20 Jan 2026
Chief Legal Officer
Sold after exercise
1,000
$69.74
$69.74K
Khara Rahul
2 Jan 2026
Chief Legal Officer
Sold after exercise
1,157
$79.27
$91.72K
Khara Rahul
2 Jan 2026
Chief Legal Officer
Sold after exercise
4,993
$78.62
$392.57K
Khara Rahul
2 Jan 2026
Chief Legal Officer
Sold after exercise
350
$77.67
$27.18K
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise
7,000
$91.87
$643.09K
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
1,572
$92.01
$144.64K
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
11,427
$91.18
$1.04M
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
2,049
$92.01
$188.53K
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
14,811
$91.18
$1.35M
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
3,921
$92.01
$360.77K
Bitterman Kevin
15 Dec 2025
Director
Sold after exercise indirect
28,913
$91.18
$2.64M
Quisel John D
11 Dec 2025
Chief Executive Officer
Sold after exercise
16,888
$93.65
$1.58M
Quisel John D
11 Dec 2025
Chief Executive Officer
Sold after exercise
16,356
$92.96
$1.52M
Quisel John D
11 Dec 2025
Chief Executive Officer
Sold after exercise
4,337
$92.21
$399.92K
Quisel John D
11 Dec 2025
Chief Executive Officer
Sold after exercise
2,419
$90.97
$220.06K
Yu Jonathan Yen-Wen
11 Nov 2025
Chief Operating Officer
Sold after exercise
8,040
$85.91
$690.74K
Yu Jonathan Yen-Wen
11 Nov 2025
Chief Operating Officer
Sold after exercise
9,360
$85.33
$798.69K
Yu Jonathan Yen-Wen
11 Nov 2025
Chief Operating Officer
Sold after exercise
4,585
$83.99
$385.08K
Yu Jonathan Yen-Wen
11 Nov 2025
Chief Operating Officer
Sold after exercise
8,015
$83.15
$666.41K
Quisel John D
9 Jul 2025
Chief Executive Officer
Sold after exercise
3,593
$56.20
$201.92K
Quisel John D
9 Jul 2025
Chief Executive Officer
Sold after exercise
31,207
$55.23
$1.72M
Quisel John D
3 Jul 2025
Chief Executive Officer
Sold after exercise
5,200
$55.09
$286.45K
Khara Rahul
3 Feb 2025
Chief Legal Officer
Sold after exercise
1,813
$56.01
$101.54K
Khara Rahul
3 Feb 2025
Chief Legal Officer
Sold after exercise
5,687
$55.40
$315.03K
Khara Rahul
2 Jan 2025
Chief Legal Officer
Sold after exercise
2,100
$64.13
$134.68K
Khara Rahul
2 Jan 2025
Chief Legal Officer
Sold after exercise
1,400
$62.95
$88.14K
Khara Rahul
2 Jan 2025
Chief Legal Officer
Sold after exercise
4,000
$61.96
$247.84K
Quisel John D
30 Dec 2024
Chief Executive Officer
Sold after exercise
1,900
$62.41
$118.58K
Quisel John D
30 Dec 2024
Chief Executive Officer
Sold after exercise
11,112
$61.87
$687.48K
Quisel John D
23 Dec 2024
Chief Executive Officer
Sold after exercise
4,212
$63.80
$268.73K
Quisel John D
23 Dec 2024
Chief Executive Officer
Sold after exercise
12,194
$63.12
$769.67K
Quisel John D
23 Dec 2024
Chief Executive Officer
Sold after exercise
3,414
$62.38
$212.96K
Quisel John D
16 Dec 2024
Chief Executive Officer
Sold after exercise
500
$67.20
$33.60K
Quisel John D
16 Dec 2024
Chief Executive Officer
Sold after exercise
6,305
$66.35
$418.36K
Quisel John D
16 Dec 2024
Chief Executive Officer
Sold after exercise
5,767
$65.58
$378.19K
Quisel John D
16 Dec 2024
Chief Executive Officer
Sold after exercise
219
$64.66
$14.16K
White William Richard
2 Dec 2024
Director
Sold after exercise
173
$65.33
$11.30K
White William Richard
2 Dec 2024
Director
Sold after exercise
1,762
$64.58
$113.79K
White William Richard
2 Dec 2024
Director
Sold after exercise
22
$63.49
$1.40K
Savage William Jacob
25 Nov 2024
Chief Medical Officer
Sold after exercise
1,904
$67.02
$127.61K
Savage William Jacob
25 Nov 2024
Chief Medical Officer
Sold after exercise
3,542
$65.79
$233.02K
Savage William Jacob
25 Nov 2024
Chief Medical Officer
Sold after exercise
8,737
$64.98
$567.70K
Savage William Jacob
15 Nov 2024
Chief Medical Officer
Sold after exercise
100
$61.10
$6.11K
Savage William Jacob
15 Nov 2024
Chief Medical Officer
Sold after exercise
1,219
$60.16
$73.33K
Savage William Jacob
15 Nov 2024
Chief Medical Officer
Sold after exercise
7,839
$59.54
$466.71K
White William Richard
4 Nov 2024
Director
Sold after exercise
5,346
$58.94
$315.12K
White William Richard
4 Nov 2024
Director
Sold after exercise
1,790
$57.59
$103.09K
White William Richard
1 Nov 2024
Director
Sold after exercise
129
$46.75
$6.03K
White William Richard
1 Nov 2024
Director
Sold after exercise
72
$45.68
$3.29K
White William Richard
1 Oct 2024
Director
Sold after exercise
79
$52.53
$4.15K
White William Richard
1 Oct 2024
Director
Sold after exercise
50
$51.51
$2.58K
White William Richard
1 Oct 2024
Director
Sold after exercise
40
$50.45
$2.02K
White William Richard
1 Oct 2024
Director
Sold after exercise
32
$49.03
$1.57K
White William Richard
3 Sep 2024
Director
Sold after exercise
10
$52.28
$522.80
White William Richard
3 Sep 2024
Director
Sold after exercise
50
$51.54
$2.58K
White William Richard
3 Sep 2024
Director
Sold after exercise
337
$50.29
$16.95K
White William Richard
3 Sep 2024
Director
Sold after exercise
1,560
$49.43
$77.11K
White William Richard
1 Aug 2024
Director
Sold after exercise
57
$43.95
$2.51K
White William Richard
1 Aug 2024
Director
Sold after exercise
144
$43.24
$6.23K
White William Richard
1 Jul 2024
Director
Sold after exercise
74
$46.45
$3.44K
White William Richard
1 Jul 2024
Director
Sold after exercise
109
$45.92
$5.00K
White William Richard
1 Jul 2024
Director
Sold after exercise
18
$45.07
$811.27
Showing 250 of 396 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 228
Amendments (4/A) skipped 3
Filings about a different issuer 0
Unreadable filings 0
Joint filings 21
Sales on a Rule 10b5-1 plan 60
Sales straight out of an exercise 114
Sales at will 183
Transactions with no price 0
Shares from compensation/vesting 15,363,464
Sales filed before the plan box existed 1
History held since 19 Oct 2020