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Sibold William John

Disclosed activity across 1 company

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29578
SEC CIK
0001518611

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MADRIGAL PHARMACEUTICALS, INC.MDGL · Entity 3441Director · President and CEOSeptember 09, 2026September 11, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

MADRIGAL PHARMACEUTICALS, INC.

Report date September 09, 2026 · Filed September 11, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect197,746 Ending reported balance After 2026-09-11 transaction · row 24
24 source rows · reconciled sequence

Row 1 · 2026-09-09 · Sale · Disposed 131 · Balance 209,198

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $527.49 to $528.27, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and the footnotes below.

Row 2 · 2026-09-09 · Sale · Disposed 347 · Balance 208,851

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $528.54 to $529.51, inclusive.

Row 3 · 2026-09-09 · Sale · Disposed 522 · Balance 208,329

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $529.64 to $530.48, inclusive.

Row 4 · 2026-09-09 · Sale · Disposed 368 · Balance 207,961

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $531.57 to $532.28, inclusive.

Row 5 · 2026-09-09 · Sale · Disposed 512 · Balance 207,449

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.57 to $533.29, inclusive.

Row 6 · 2026-09-09 · Sale · Disposed 396 · Balance 207,053

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.58 to $534.57, inclusive.

Row 7 · 2026-09-09 · Sale · Disposed 644 · Balance 206,409

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F8: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $534.63 to $535.62, inclusive.

Row 8 · 2026-09-09 · Sale · Disposed 1,040 · Balance 205,369

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.64 to $536.45, inclusive.

Row 9 · 2026-09-09 · Sale · Disposed 640 · Balance 204,729

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F10: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $536.64 to $537.56, inclusive.

Row 10 · 2026-09-09 · Sale · Disposed 520 · Balance 204,209

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F11: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.70 to $538.65, inclusive.

Row 11 · 2026-09-09 · Sale · Disposed 215 · Balance 203,994

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F12: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $538.86 to $539.83, inclusive.

Row 12 · 2026-09-09 · Sale · Disposed 505 · Balance 203,489

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F13: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.86 to $540.47, inclusive.

Row 13 · 2026-09-09 · Sale · Disposed 362 · Balance 203,127

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F14: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.29 to $542.27, inclusive.

Row 14 · 2026-09-09 · Sale · Disposed 160 · Balance 202,967

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F15: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.42 to $542.68, inclusive.

Row 15 · 2026-09-11 · Sale · Disposed 60 · Balance 202,907

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F17: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.76 to $533.64, inclusive.

Row 16 · 2026-09-11 · Sale · Disposed 106 · Balance 202,801

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F18: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.76 to $534.48, inclusive.

Row 17 · 2026-09-11 · Sale · Disposed 218 · Balance 202,583

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F19: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.52 to $536.02, inclusive.

Row 18 · 2026-09-11 · Sale · Disposed 160 · Balance 202,423

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F20: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.235 to $538.00, inclusive.

Row 19 · 2026-09-11 · Sale · Disposed 687 · Balance 201,736

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F21: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.97 to $540.90, inclusive.

Row 20 · 2026-09-11 · Sale · Disposed 368 · Balance 201,368

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F22: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.00 to $541.73, inclusive.

Row 21 · 2026-09-11 · Sale · Disposed 1,202 · Balance 200,166

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F23: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.11 to $543.02, inclusive.

Row 22 · 2026-09-11 · Sale · Disposed 1,539 · Balance 198,627

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F24: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $543.27 to $544.20, inclusive.

Row 23 · 2026-09-11 · Sale · Disposed 761 · Balance 197,866

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F25: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $544.38 to $545.32, inclusive.

Row 24 · 2026-09-11 · Sale · Disposed 120 · Balance 197,746

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F26: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $546.28 to $546.56, inclusive.

Filing footnotes · ownership attribution and instrument terms

F1: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $527.49 to $528.27, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and the footnotes below.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $528.54 to $529.51, inclusive.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $529.64 to $530.48, inclusive.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $531.57 to $532.28, inclusive.

F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.57 to $533.29, inclusive.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.58 to $534.57, inclusive.

F8: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $534.63 to $535.62, inclusive.

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.64 to $536.45, inclusive.

F10: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $536.64 to $537.56, inclusive.

F11: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.70 to $538.65, inclusive.

F12: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $538.86 to $539.83, inclusive.

F13: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.86 to $540.47, inclusive.

F14: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.29 to $542.27, inclusive.

F15: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.42 to $542.68, inclusive.

F16: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F17: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.76 to $533.64, inclusive.

F18: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.76 to $534.48, inclusive.

F19: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.52 to $536.02, inclusive.

F20: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.235 to $538.00, inclusive.

F21: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.97 to $540.90, inclusive.

F22: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.00 to $541.73, inclusive.

F23: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.11 to $543.02, inclusive.

F24: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $543.27 to $544.20, inclusive.

F25: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $544.38 to $545.32, inclusive.

F26: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $546.28 to $546.56, inclusive.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 120 $546.38 $65,565.20
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 24

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 197,746

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F26 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $546.28 to $546.56, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 761 $544.83 $414,616.16
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 23

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 197,866

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F25 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $544.38 to $545.32, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,539 $544.02 $837,252.94
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 22

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 198,627

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F24 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $543.27 to $544.20, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,202 $542.60 $652,209.05
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 21

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 200,166

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F23 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.11 to $543.02, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 368 $541.64 $199,324.37
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 20

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 201,368

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F22 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.00 to $541.73, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 687 $540.59 $371,382.38
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 19

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 201,736

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F21 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.97 to $540.90, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 160 $537.62 $86,018.80
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 18

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,423

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F20 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.235 to $538.00, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 218 $535.94 $116,835.68
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 17

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,583

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F19 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.52 to $536.02, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 106 $534.06 $56,610.68
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 16

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,801

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F18 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.76 to $534.48, inclusive.

Read SEC document
September 11, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 60 $533.09 $31,985.48
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 15

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,907

F16 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F17 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.76 to $533.64, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 160 $542.55 $86,807.60
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 14

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,967

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F15 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.42 to $542.68, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 362 $541.65 $196,078.68
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 13

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 203,127

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F14 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $541.29 to $542.27, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 505 $540.19 $272,796.40
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 12

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 203,489

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $539.86 to $540.47, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 215 $539.03 $115,891.04
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 11

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 203,994

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $538.86 to $539.83, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 520 $538.30 $279,914.49
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 10

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 204,209

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $537.70 to $538.65, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 640 $537.17 $343,791.23
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 9

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 204,729

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $536.64 to $537.56, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,040 $536.11 $557,556.79
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 8

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 205,369

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $535.64 to $536.45, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 644 $535.27 $344,715.10
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 7

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 206,409

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $534.63 to $535.62, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 396 $534.20 $211,541.77
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 6

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 207,053

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $533.58 to $534.57, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 512 $533.09 $272,943.72
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 5

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 207,449

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $532.57 to $533.29, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 368 $531.99 $195,772.21
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 4

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 207,961

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $531.57 to $532.28, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 522 $530.23 $276,780.63
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 3

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 208,329

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $529.64 to $530.48, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 347 $529.27 $183,655.68
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 208,851

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $528.54 to $529.51, inclusive.

Read SEC document
September 09, 2026 Filed Sep 11, 2026 20:57 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 131 $527.88 $69,152.06
Disclosure

SEC source: 0001628280-26-061581 · wk-form4_1789160228.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 209,198

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $527.49 to $528.27, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and the footnotes below.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 280 $555.05 $155,414.00
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 11

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,329

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $555.00 to $555.10, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1 $550.72 $550.72
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 10

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,609

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 153 $550.01 $84,152.11
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 9

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,610

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $549.70 to $550.24, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 47 $548.87 $25,796.98
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 8

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,763

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $548.42 to $549.39, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 680 $547.70 $372,434.64
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 7

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,810

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $547.40 to $548.29, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 269 $547.08 $147,164.20
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 6

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,490

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $546.37 to $547.35, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 275 $545.71 $150,070.03
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 5

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,759

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $545.31 to $546.29, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 545 $544.71 $296,869.13
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 4

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,034

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $544.31 to $545.28, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 110 $543.79 $59,817.22
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 3

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,579

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $543.26 to $544.25, inclusive.

Read SEC document
July 20, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 140 $542.75 $75,984.43
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,689

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $542.22 to $543.16, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and the footnotes below.

Read SEC document
July 17, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionPerformance Restricted Stock Units · Derivative 50,000 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · derivative · entry 12

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F12 · derivative.exercise_price: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that could be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person was eligible to earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025, the second hurdle in December 2025 and the third and final hurdle reported on this line, all performance hurdles have been achieved. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F12 · derivative.exercise_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that could be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person was eligible to earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025, the second hurdle in December 2025 and the third and final hurdle reported on this line, all performance hurdles have been achieved. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F12 · derivative.expiration_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that could be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person was eligible to earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025, the second hurdle in December 2025 and the third and final hurdle reported on this line, all performance hurdles have been achieved. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

Read SEC document
July 17, 2026 Filed Jul 21, 2026 01:16 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionCommon Stock 50,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-26-048919 · wk-form4_1784596610.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,829

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On July 17, 2026, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 12. Pursuant to the terms of the award, certain of these shares were sold to cover certain tax withholding obligations as described in Footnote 2 below. The Issuer is irrevocably obligated to issue the remaining shares to the Reporting Person on September 8, 2029, the sixth anniversary of the commencement of his employment with the Issuer.

F1 · price: On July 17, 2026, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 12. Pursuant to the terms of the award, certain of these shares were sold to cover certain tax withholding obligations as described in Footnote 2 below. The Issuer is irrevocably obligated to issue the remaining shares to the Reporting Person on September 8, 2029, the sixth anniversary of the commencement of his employment with the Issuer.

Read SEC document
March 06, 2026 Filed Mar 6, 2026 23:49 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,663 $431.94 $718,316.22
Disclosure

SEC source: 0001628280-26-015769 · wk-form4_1772840956.xml · nonDerivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 161,829

F2 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 23:49 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 GrantStock Option (Right to Buy) · Derivative 18,743 $0.00 Strike: $434.80 $0.00
Disclosure

SEC source: 0001628280-26-015769 · wk-form4_1772840956.xml · derivative · entry 3

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,743

Underlying: Common Stock · 18,743 shares

Expires 2036-03-04

F3 · derivative.exercise_date: The option vests as to 25% of the shares on the first anniversary of the date of grant (March 4, 2027) and, thereafter, 6.25% of the shares shall vest on the last day of each successive three-month period, provided the Reporting Person continues in service with the Issuer on each such date.

Read SEC document
March 04, 2026 Filed Mar 6, 2026 23:49 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 GrantCommon Stock 14,995 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-015769 · wk-form4_1772840956.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,492

F1 · kind: Represents a grant of restricted stock units, which vest as to 25% of the shares on each of March 4, 2027, March 4, 2028, March 4, 2029 and March 4, 2030, provided the Reporting Person continues in service with the Issuer on each such date.

Read SEC document
January 26, 2026 Filed Jan 26, 2026 22:14 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,577 $492.42 $776,546.34
Disclosure

SEC source: 0001628280-26-003468 · wk-form4_1769465694.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,497

F1 · kind: This sale represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale was automatic and not at the discretion of the Reporting Person.

Read SEC document
December 04, 2025 Filed Dec 4, 2025 22:26 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 2,400 $575.34 $1,380,816.00
Disclosure

SEC source: 0001628280-25-055430 · wk-form4_1764887216.xml · nonDerivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,074

F2 · kind: The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

Read SEC document
December 03, 2025 Filed Dec 4, 2025 22:26 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionPerformance Restricted Stock Units · Derivative 50,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-055430 · wk-form4_1764887216.xml · derivative · entry 3

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F3 · price: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F3 · derivative.exercise_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F3 · derivative.expiration_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

F3 · balance_after: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.

Read SEC document
December 03, 2025 Filed Dec 4, 2025 22:26 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionCommon Stock 50,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-055430 · wk-form4_1764887216.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,474

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On December 3, 2025, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 3. Pursuant to the terms of the award, certain of these shares were sold to cover certain tax withholding obligations as described in Footnote 2 below. The Issuer is irrevocably obligated to issue the remaining shares to the Reporting Person on September 8, 2028, the fifth anniversary of the commencement of his employment with the Issuer.

F1 · price: On December 3, 2025, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 3. Pursuant to the terms of the award, certain of these shares were sold to cover certain tax withholding obligations as described in Footnote 2 below. The Issuer is irrevocably obligated to issue the remaining shares to the Reporting Person on September 8, 2028, the fifth anniversary of the commencement of his employment with the Issuer.

Read SEC document
September 09, 2025 Filed Sep 10, 2025 01:07 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 7,279 $445.63 $3,243,740.77
Disclosure

SEC source: 0001518611-25-000009 · wk-form4_1757466450.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,474

F1 · kind: The sale reported on this Form 4 represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units.

Read SEC document
August 21, 2025 Filed Aug 21, 2025 21:44 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 1,131 $401.00 $453,531.34
Disclosure

SEC source: 0001518611-25-000007 · wk-form4_1755812664.xml · nonDerivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 109,753

F1 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $401.00 to $401.01, inclusive.

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August 21, 2025 Filed Aug 21, 2025 21:44 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 SaleCommon Stock 6,485 $400.03 $2,594,225.03
Disclosure

SEC source: 0001518611-25-000007 · wk-form4_1755812664.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 110,884

F1 · kind: These sales were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $400.00 to $400.50, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and the footnote below.

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March 05, 2025 Filed Mar 7, 2025 22:47 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 GrantStock Option (Right to Buy) · Derivative 22,009 $0.00 Strike: $347.28 $0.00
Disclosure

SEC source: 0001628280-25-011410 · wk-form4_1741387671.xml · derivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,009

Underlying: Common Stock · 22,009 shares

Expires 2035-03-05

F2 · derivative.exercise_date: The option vests as to 25% of the shares on the first anniversary of the date of grant (March 5, 2026) and, thereafter, 6.25% of the shares shall vest on the last day of each successive three-month period, provided the Reporting Person continues in service with the Issuer on each such date.

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March 05, 2025 Filed Mar 7, 2025 22:47 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 GrantCommon Stock 13,066 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-011410 · wk-form4_1741387671.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,369

F1 · kind: Represents a grant of restricted stock units, which vest as to 25% of the shares on each of March 5, 2026, March 5, 2027, March 5, 2028 and March 5, 2029, provided the Reporting Person continues in service with the Issuer on each such date.

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February 27, 2025 Filed Feb 28, 2025 21:36 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionPerformance Restricted Stock Units · Derivative 50,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-009091 · wk-form4_1740778579.xml · derivative · entry 2

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of performance-based restricted stock units (PSUs) with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award and is eligible to earn up to an additional 100,000 shares upon the achievement of sustained stock price appreciation hurdles. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the PSUs.

F2 · price: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of performance-based restricted stock units (PSUs) with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award and is eligible to earn up to an additional 100,000 shares upon the achievement of sustained stock price appreciation hurdles. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the PSUs.

F2 · derivative.exercise_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of performance-based restricted stock units (PSUs) with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award and is eligible to earn up to an additional 100,000 shares upon the achievement of sustained stock price appreciation hurdles. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the PSUs.

F2 · derivative.expiration_date: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of performance-based restricted stock units (PSUs) with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award and is eligible to earn up to an additional 100,000 shares upon the achievement of sustained stock price appreciation hurdles. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the PSUs.

F2 · balance_after: On September 11, 2023, the Reporting Person was granted a one-time sign-on award of performance-based restricted stock units (PSUs) with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award and is eligible to earn up to an additional 100,000 shares upon the achievement of sustained stock price appreciation hurdles. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the PSUs.

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February 27, 2025 Filed Feb 28, 2025 21:36 UTC MADRIGAL PHARMACEUTICALS, INC. MDGL · Entity 3441 Exercise / conversionCommon Stock 50,000 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-25-009091 · wk-form4_1740778579.xml · nonDerivative · entry 1

Sibold William John · CIK 0001518611 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,303

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On February 27, 2025, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 2. Although the Issuer is irrevocably obligated to issue these shares to the Reporting Person, these shares will settle and be delivered to the Reporting Person on September 8, 2027, the fourth anniversary of the commencement of his employment with the Issuer.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.