YU JONATHAN YEN-WEN

PrivateCIK: 1951849
Location

WATERTOWN, MA

YU JONATHAN YEN-WEN (Chief Operating Officer) sold 0.2% of their position (100.00 shares) of DISC MEDICINE, INC. on the open market

Open‑market sale worth $8.3K — 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
-100.00
Net shares
Net seller
$8.3K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
100.00 acquired · 200.00 disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+100.00

Price / share

$13.50

Trade value

$1.35K

% of position

0.2%
7/7/2026
54.32K54.42K

Common Stock

Direct
S · Sale

Shares

100.00

Price / share

$82.50

Trade value

$8.25K

% of position

0.2%
7/7/2026
54.42K54.32K
Total

Net shares

+0.00

Net value

-$6.90K

Derivative Transactions1

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

100.00 shares

Shares

100.00

Strike price

13.50

Held after

23.75K

Exercisable

7/7/2026