YU JONATHAN YEN-WEN

PrivateCIK: 1951849
Location

WATERTOWN, MA

YU JONATHAN YEN-WEN (Chief Operating Officer) sold 1.5% of their position (804.00 shares) of DISC MEDICINE, INC. on the open market

Open‑market sale worth $66.4K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderYU JONATHAN YEN-WENCIK 1951849
IssuerDISC MEDICINE, INC.CIK 1816736
Officer· Chief Operating Officer
Since Feb 2026
-804.00
Net shares
Net seller
$66.4K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
804.00 acquired · 1.61K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+804.00

Price / share

$13.50

Trade value

$10.85K

% of position

1.5%
8/12/2026
54.32K55.13K

Common Stock

Direct
S · Sale

Shares

804.00

Price / share

$82.64

Trade value

$66.44K

% of position

1.5%
8/12/2026
55.13K54.32K
Total

Net shares

+0.00

Net value

-$55.59K

Derivative Transactions1

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

804.00 shares

Shares

804.00

Strike price

13.50

Held after

22.94K

Exercisable

8/12/2026