SIBOLD WILLIAM JOHN

PrivateCIK: 1518611
Location

WEST CONSHOHOCKEN, PA

SIBOLD WILLIAM JOHN (President and CEO) sold 1.2% of their position (2.50K shares) of MADRIGAL PHARMACEUTICALS, INC. on the open market

Open‑market sale worth $1.37M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 10 sales
InsiderSIBOLD WILLIAM JOHNCIK 1518611
→
DirectorOfficer· President and CEO
Since Mar 2026
-2.50K
Net shares
Net seller
$1.37M
Total sold
10
Open market trades
0B · 10S
12
Total transactions
50K acquired · 52.50K disposed
Non-Derivative Transactions11

Common Stock

Direct
M · Option Exercise

Shares

+50K

Price / share

—

Trade value

—

% of position

30.9%
7/17/2026
161.83K→211.83K

Common Stock

Direct
S · Sale

Shares

−140.00

Price / share

$542.75

Trade value

$75.98K

% of position

0.1%
7/20/2026
211.83K→211.69K

Common Stock

Direct
S · Sale

Shares

−110.00

Price / share

$543.79

Trade value

$59.82K

% of position

0.1%
7/20/2026
211.69K→211.58K

Common Stock

Direct
S · Sale

Shares

−545.00

Price / share

$544.71

Trade value

$296.87K

% of position

0.3%
7/20/2026
211.58K→211.03K

Common Stock

Direct
S · Sale

Shares

−275.00

Price / share

$545.71

Trade value

$150.07K

% of position

0.1%
7/20/2026
211.03K→210.76K

Common Stock

Direct
S · Sale

Shares

−269.00

Price / share

$547.08

Trade value

$147.16K

% of position

0.1%
7/20/2026
210.76K→210.49K

Common Stock

Direct
S · Sale

Shares

−680.00

Price / share

$547.70

Trade value

$372.43K

% of position

0.3%
7/20/2026
210.49K→209.81K

Common Stock

Direct
S · Sale

Shares

−47.00

Price / share

$548.87

Trade value

$25.80K

% of position

0.0%
7/20/2026
209.81K→209.76K

Common Stock

Direct
S · Sale

Shares

−153.00

Price / share

$550.01

Trade value

$84.15K

% of position

0.1%
7/20/2026
209.76K→209.61K

Common Stock

Direct
S · Sale

Shares

−1.00

Price / share

$550.72

Trade value

$550.72

% of position

0.0%
7/20/2026
209.61K→209.61K

Common Stock

Direct
S · Sale

Shares

−280.00

Price / share

$555.05

Trade value

$155.41K

% of position

0.1%
7/20/2026
209.61K→209.33K
Total

Net shares

+47.50K

Net value

-$1.37M

Derivative Transactions1

Performance Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

50K shares

Shares

−50K

Strike price

Held after

0.00

Exercisable

—

7/17/2026
SIBOLD WILLIAM JOHN — Insider Transaction (Form 4) Filed Jul 21, 2026 | Finecho