William John Sibold
CIK: 0001518611
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MADRIGAL PHARMACEUTICALS, INC.
Discretionary Trading P&L
Holdings
Transaction History (47 total)
- Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct368 shares at avg. $541.64$199K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct687 shares at avg. $540.59$371K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct60 shares at avg. $533.09$32K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct106 shares at avg. $534.06$57K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct218 shares at avg. $535.94$117K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct160 shares at avg. $537.62$86K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct1.5K shares at avg. $544.02$837K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct761 shares at avg. $544.83$415K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct120 shares at avg. $546.38$66K - Sep 11, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct1.2K shares at avg. $542.60$652K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct512 shares at avg. $533.09$273K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct396 shares at avg. $534.20$212K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct644 shares at avg. $535.27$345K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct640 shares at avg. $537.17$344K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct1K shares at avg. $536.11$558K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct520 shares at avg. $538.30$280K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct215 shares at avg. $539.03$116K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct505 shares at avg. $540.19$273K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct362 shares at avg. $541.65$196K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct160 shares at avg. $542.55$87K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct131 shares at avg. $527.88$69K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct347 shares at avg. $529.27$184K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct522 shares at avg. $530.23$277K - Sep 9, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct368 shares at avg. $531.99$196K - Jul 20, 2026MDGL
MADRIGAL PHARMACEUTICALS, INC.
Sale(S)Direct153 shares at avg. $550.01$84K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 368 | $541.64 | $199,324 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 687 | $540.59 | $371,382 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 60 | $533.09 | $31,985 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 106 | $534.06 | $56,611 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 218 | $535.94 | $116,836 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 160 | $537.62 | $86,019 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 1,539 | $544.02 | $837,253 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 761 | $544.83 | $414,616 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 120 | $546.38 | $65,565 | Direct |
| Sep 11, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 1,202 | $542.60 | $652,209 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 512 | $533.09 | $272,944 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 396 | $534.20 | $211,542 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 644 | $535.27 | $344,715 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 640 | $537.17 | $343,791 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 1,040 | $536.11 | $557,557 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 520 | $538.30 | $279,914 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 215 | $539.03 | $115,891 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 505 | $540.19 | $272,796 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 362 | $541.65 | $196,079 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 160 | $542.55 | $86,808 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 131 | $527.88 | $69,152 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 347 | $529.27 | $183,656 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 522 | $530.23 | $276,781 | Direct |
| Sep 9, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 368 | $531.99 | $195,772 | Direct |
| Jul 20, 2026 | MDGL MADRIGAL PHARMACEUTICALS, INC. | Sale(S) | 153 | $550.01 | $84,152 | Direct |
1-25 of 47 transactions
About Sibold William John
Sibold William John (SEC CIK 0001518611) files insider reports with the SEC as President and CEO of MADRIGAL PHARMACEUTICALS, INC. (MDGL).
Signal8 holds 11 ownership filings by Sibold William John, all Form 4s, filed between Sep 11, 2024 and Sep 11, 2026. Those filings report 47 transactions, from Sep 9, 2024 to Sep 11, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Sibold William John's filings is in WEST CONSHOHOCKEN, PA.
Recent filings by Sibold William John
Other insiders filing for MADRIGAL PHARMACEUTICALS, INC. (MDGL)
- Kelley Shannon T, General Counsel
- REED JOHN C, Director
- Taub Rebecca, Director
- Levy Richard S, Director
- FOUSE JACQUALYN A, Director
- Daly James M, Director