Sibold William John
CIK: 0001518611•President and CEO
OfficerDirector
Primary company: MADRIGAL PHARMACEUTICALS, INC. (MDGL)
Sibold William John is a corporate insider (President and CEO) at MADRIGAL PHARMACEUTICALS, INC. (MDGL) filing SEC Form 4 transactions. 35 transactions across 2 companies, totaling $0 in purchases and $10,531,370 in sales. Source: SEC EDGAR.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
| Sale | 280 | $555.05 | $155K | 209,329 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 1 | $550.72 | $551 | 209,609 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 153 | $550.01 | $84K | 209,610 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 47 | $548.87 | $26K | 209,763 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 680 | $547.70 | $372K | 209,810 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 269 | $547.08 | $147K | 210,490 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 275 | $545.71 | $150K | 210,759 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 545 | $544.71 | $297K | 211,034 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 110 | $543.79 | $60K | 211,579 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 140 | $542.75 | $76K | 211,689 | 7/20/2026 Filed: 7/17/2026 | Filing → | |
| Exercise | 50,000 | - | - | 0 | 7/17/2026 Filed: 7/17/2026 | Filing → | |
| Exercise | 50,000 | - | - | 211,829 | 7/17/2026 Filed: 7/17/2026 | Filing → | |
| Sale | 1,663 | $431.94 | $718K | 161,829 | 3/6/2026 Filed: 3/4/2026 | Filing → | |
| Award | 18,743 | $434.80 | $8.15M | 18,743 | 3/4/2026 Filed: 3/4/2026 | Filing → | |
| Award | 14,995 | - | - | 163,492 | 3/4/2026 Filed: 3/4/2026 | Filing → | |
| Sale | 1,577 | $492.42 | $777K | 148,497 | 1/26/2026 Filed: 1/26/2026 | Filing → | |
| Sale | 2,400 | $575.34 | $1.38M | 150,074 | 12/4/2025 Filed: 12/4/2025 | Filing → | |
| Exercise | 50,000 | - | - | 0 | 12/3/2025 Filed: 12/4/2025 | Filing → | |
| Exercise | 50,000 | - | - | 152,474 | 12/3/2025 Filed: 12/4/2025 | Filing → | |
| Sale | 7,279 | $445.63 | $3.24M | 102,474 | 9/9/2025 Filed: 9/9/2025 | Filing → |
Type
Sale
Shares
280
Price
$555.05
Value
$155K
Type
Sale
Shares
1
Price
$550.72
Value
$551
Type
Sale
Shares
153
Price
$550.01
Value
$84K
Type
Sale
Shares
47
Price
$548.87
Value
$26K
Type
Sale
Shares
680
Price
$547.70
Value
$372K
Type
Sale
Shares
269
Price
$547.08
Value
$147K
Type
Sale
Shares
275
Price
$545.71
Value
$150K
Type
Sale
Shares
545
Price
$544.71
Value
$297K
Type
Sale
Shares
110
Price
$543.79
Value
$60K
Type
Sale
Shares
140
Price
$542.75
Value
$76K
Type
Exercise
Shares
50,000
Price
-
Value
-
Type
Exercise
Shares
50,000
Price
-
Value
-
Type
Sale
Shares
1,663
Price
$431.94
Value
$718K
Type
Award
Shares
18,743
Price
$434.80
Value
$8.15M
Type
Award
Shares
14,995
Price
-
Value
-
Type
Sale
Shares
1,577
Price
$492.42
Value
$777K
Type
Sale
Shares
2,400
Price
$575.34
Value
$1.38M
Type
Exercise
Shares
50,000
Price
-
Value
-
Type
Exercise
Shares
50,000
Price
-
Value
-
Type
Sale
Shares
7,279
Price
$445.63
Value
$3.24M
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