QUISEL JOHN D

PrivateCIK: 1586788
Location

CAMBRIDGE, MA

QUISEL JOHN D (Chief Executive Officer) sold 12.7% of their position (33K shares) of DISC MEDICINE, INC. on the open market

Open‑market sale worth $2.47M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales
InsiderQUISEL JOHN DCIK 1586788
IssuerDISC MEDICINE, INC.CIK 1816736
DirectorOfficer· Chief Executive Officer
Since Feb 2026
-33K
Net shares
Net seller
$2.47M
Total sold
3
Open market trades
0B · 3S
7
Total transactions
33K acquired · 66K disposed
Non-Derivative Transactions5

Common Stock

Direct
M · Option Exercise

Shares

+25.58K

Price / share

$9.86

Trade value

$252.26K

% of position

11.3%
7/13/2026
226.06K251.65K

Common Stock

Direct
M · Option Exercise

Shares

+7.42K

Price / share

$13.50

Trade value

$100.12K

% of position

2.9%
7/13/2026
251.65K259.06K

Common Stock

Direct
S · Sale

Shares

9.70K

Price / share

$74.27

Trade value

$720.74K

% of position

3.7%
7/13/2026
259.06K249.36K

Common Stock

Direct
S · Sale

Shares

16.90K

Price / share

$74.95

Trade value

$1.27M

% of position

6.8%
7/13/2026
249.36K232.46K

Common Stock

Direct
S · Sale

Shares

6.40K

Price / share

$76.05

Trade value

$486.73K

% of position

2.8%
7/13/2026
232.46K226.06K
Total

Net shares

+0.00

Net value

-$2.12M

Derivative Transactions2

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

25.58K shares

Shares

25.58K

Strike price

9.86

Held after

15.79K

Exercisable

7/13/2026

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

7.42K shares

Shares

7.42K

Strike price

13.50

Held after

124.59K

Exercisable

7/13/2026
QUISEL JOHN D — Insider Transaction (Form 4) Filed Jul 14, 2026 | Finecho