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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.

Insider
Date
Role
Action
Shares
Price
Amount
Quisel John D
15 Sep 2026
Chief Executive Officer
Exercised, kept
36,000
$1.01
$36.36K
Savage William Jacob
22 Dec 2025
Chief Medical Officer
Exercised, kept
99
$13.50
$1.34K
Savage William Jacob
22 Dec 2025
Chief Medical Officer
Exercised, kept
219
$9.86
$2.16K
Savage William Jacob
22 Dec 2025
Chief Medical Officer
Exercised, kept
2,825
$9.86
$27.85K
Quisel John D
19 Dec 2025
Chief Executive Officer
Exercised, kept
12,300
$1.01
$12.42K
Quisel John D
9 Sep 2025
Chief Executive Officer
Exercised, kept
10,000
$1.01
$10.10K
Savage William Jacob
27 Jun 2025
Chief Medical Officer
Exercised, kept
2,411
$9.86
$23.77K
Savage William Jacob
27 Jun 2025
Chief Medical Officer
Exercised, kept
29,659
$9.86
$292.44K
Quisel John D
7 Apr 2025
Chief Executive Officer
Exercised, kept
7,000
$1.01
$7.07K
Savage William Jacob
3 Feb 2025
Chief Medical Officer
Exercised, kept
1,498
$2.65
$3.97K
Savage William Jacob
3 Feb 2025
Chief Medical Officer
Exercised, kept
4,233
$2.65
$11.22K
Quisel John D
31 Dec 2024
Chief Executive Officer
Exercised, kept
10,000
$1.01
$10.10K
Quisel John D
8 Jul 2024
Chief Executive Officer
Exercised, kept
3,000
$1.01
$3.03K
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