This Quarterly Report on Form includes “forward-looking statements” made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, that are based on our beliefs and assumptions and on information currently available to us, but are subject to factors beyond our control. Forward-looking statements: reflect management’s current knowledge, assumptions, judgment and expectations regarding future performance or events; include all statements that are not historical facts; and can be identified by terms such as “accelerate,” “achieve,” “allow,” “anticipates,” “appear,” “be,” “believes,” “can,” “continue,” “could,” “demonstrates,” ”design,” “estimates,” “expects,” “expectation,” “forecasts,” “future,” “goal,” “help,” “hopeful,” “inform,” “intends,” “may,” “might,” “on track,” “planned,” “planning,” “plans,” “positions,” “potential,” “powers,” “predicts,” ”predictive,” “projects,” “seeks,” “should,” “will,” “will be,” “will achieve,” “would” or similar expressions and the negatives of those terms. In particular, forward-looking statements contained in or incorporated by reference to this Quarterly Report relate to, among other things:

Forward-looking statements are subject to a number of risks and uncertainties including, but not limited to: our clinical development of resmetirom; enrollment and trial conclusion uncertainties, generally and in relation to related measures and individual precautionary measures that may be implemented or continued for an uncertain period of time; our potential inability to raise sufficient capital to fund our ongoing operations as currently planned or to obtain financings on terms similar to those we have arranged in the past; our ability to service our indebtedness and otherwise comply with our debt covenants; outcomes or trends from competitive studies; future topline data timing or results; the risks of achieving potential benefits in studies that includes substantially more patients, and patients with different disease states, than our prior studies; limitations associated with early stage or controlled study data; the timing and outcomes of clinical studies of resmetirom; and the uncertainties inherent in clinical testing. Undue reliance should not be placed on forward-looking statements, which speak only as of the date they are made. Madrigal undertakes no obligation to update any forward-looking statements to reflect new information, events or circumstances after the date they are made, or to reflect the occurrence of unanticipated events. Please refer to Madrigal’s submissions filed or furnished with the U.S. Securities and Exchange Commission for more detailed information regarding these risks and uncertainties and other factors that may cause actual results to differ materially from those expressed or implied. We specifically discuss these risks and uncertainties in greater detail in the section appearing in Part I, Item 1A of our Annual Report on Form for the year ended December 31, 2021, filed with the SEC on February 25, 2022 (the “2021 Form as updated by the risk factors discussed in Part II, Item 1A of our Quarterly Report on for the quarter ended March 31, 2022 filed with the SEC on May 9, 2022 (the “1Q 2022 Form as well as in our other filings with the SEC. You should read the 2021 Form the 1Q 2022 Form this Quarterly Report, and the other documents that we file or have filed with the SEC, with the understanding that our actual future results may be materially different from the results expressed or implied by these forward-looking statements.

. We are a clinical-stage biopharmaceutical company pursuing novel therapeutics for nonalcoholic steatohepatitis (NASH), a liver disease with high unmet medical need. Our lead product candidate, resmetirom, is a proprietary, liver-directed, selective thyroid hormone receptor-ß, or agonist being developed as a once-daily oral pill that can potentially be used to treat NASH and a number of disease states with high unmet medical need.

NASH is a serious inflammatory form of nonalcoholic fatty liver disease, or NAFLD. NAFLD has become the most common liver disease in the United States and other developed countries and is characterized by an accumulation of fat in the liver with no other apparent causes. NASH can progress to cirrhosis or liver failure, require liver transplantation and can also result in liver cancer. Progression of NASH to end stage liver disease will soon surpass all other causes of liver failure requiring liver transplantation. Importantly, beyond these critical conditions, NASH and NAFLD patients additionally suffer heightened cardiovascular risk and, in fact, die more frequently from cardiovascular events than from liver disease. NASH and NAFLD have grown as a consequence of rising worldwide obesity-related disorders. In the United States, NAFLD is estimated to affect approximately 25% of the population, and approximately 25% of those will progress from NAFLD to NASH. Current estimates place NASH prevalence at approximately 20 million people in the United States, or five to six percent of the adult population, with similar prevalence in Europe and Asia. The prevalence of NASH is also increasing in developing regions due to the adoption of a more sedentary lifestyle and a diet consisting of processed foods with high fat and fructose content.

For NASH, we enrolled 125 patients in a Phase 2 clinical trial with resmetirom. We achieved the primary endpoint for this Phase 2 clinical trial and reported the results in December 2017, and we reported positive topline results at the conclusion of the Phase 2 clinical trial in May 2018. We also completed a open-label extension study in 31 participating NASH patients from our Phase 2 clinical trial, which included 14 patients who received placebo in the main study.

On December 18, 2019 the Company announced it had opened for enrollment a multi-center, double-blind, placebo-controlled Phase 3 clinical study of patients with biopsy-confirmed or presumed NASH recruited from sites in the U.S. Key endpoints are safety, including safety biomarkers. Secondary endpoints include LDL cholesterol, lipid biomarkers, NASH and fibrosis biomarkers. Except for serial liver biopsies, the study protocol is similar to the MAESTRO-NASH study (discussed belowunder “—Our Ongoing and Planned Studies”), with resmetirom doses of 80 mg or 100 mg or placebo. Enrollment objectives for this study were exceeded, with approximately 1,300 patients enrolled overall. The study will help support the adequacy of the safety database at the time of NDA submission for Subpart H approval for treatment of NASH in patients with F2 or F3 fibrosis. In November of 2021, we reported data from the open label arm of and in January 2022 we announced that we achieved primary and secondary endpoints for the double-blind portion of Further data were presented at a hepatology medical congress in June of 2022. has completed the double-blind arms and an open-label 100 mg arm. An additional open-label active treatment arm in patients with early (well-compensated) NASH cirrhosis is ongoing.

On March 28, 2019, the Company announced that it had initiated MAESTRO-NASH, a Phase 3 trial in NASH with its once daily, oral thyroid hormone receptor beta selective agonist, resmetirom. This double-blind, placebo-controlled study is being conducted at more than 230 sites in the United States and the rest of the world. Patients with liver biopsy confirmed NASH with stage 2 or 3 fibrosis are being randomized 1:1:1 to receive a single oral daily dose of placebo, resmetirom 80 mg or resmetirom 100 mg. A second liver biopsy at week 52 in the first 900 patients will be the basis of filing for accelerated approval under subpart H of applicable FDA regulations, which we refer to as subpart approval. Historically: the primary endpoint pertained to the percent of patients treated with either dose of resmetirom as compared with placebo who achieve NASH resolution on the week 52 liver biopsy, defined as the absence of hepatocyte ballooning (score=0), and minimal lobular inflammation (score associated with at least a reduction in NAS (NAFLD Activity Score), and no worsening of fibrosis stage; and two key secondary endpoints pertained to reduction in and a or more improvement in fibrosis stage on the week

52 biopsy with no worsening of NASH. In May 2022, the Company announced that it determined to move the fibrosis endpoint up the hierarchy in our MAESTRO-NASH trial to a primary endpoint along with NASH resolution, as dual primary endpoints. The dual primary endpoint design allows for a successful outcome of the study, which can be filed for subpart H approval, if either the NASH resolution or fibrosis reduction endpoint is met. Patients will continue in the study for a total of approximately 54 months, and will be evaluated for a composite clinical outcome including cirrhosis on liver biopsy, or a liver related event such as hepatic decompensation. The total anticipated enrollment currently is up to 2,000 patients, and will include up to 15% high risk F1 fibrosis stage NASH patients whose efficacy responses will be evaluated as exploratory endpoints. On June 30, 2021 we announced our achievement of the requisite enrollment of patients to support the planned Subpart H (Accelerated Approval of New Drugs for Serious or Life-Threatening Illnesses) submission to the US Food and Drug Administration (FDA).

On July 13, 2021 we announced first patient dosed in a planned open label active treatment extension study of named MAESTRO-NAFLD-Open Label Extension (OLE). The OLE study allows patients who complete to consent to 52 weeks of active treatment with resmetirom, making this treatment available to both patients who were assigned to placebo in and patients who were on resmetirom in

In January 2022, we announced that certain primary and key secondary endpoints from the double-blind, placebo-controlled, safety study were achieved; resmetirom was well-tolerated and provided significant reductions in liver fat, and other atherogenic lipids vs. placebo.

In May 2022 and June 2022, we announced additional data and results from the safety study, as described below. Patients in the resmetirom 80 mg and 100 mg double-blind arms achieved reductions in ALT (p=0.002; <0.0001) relative to placebo. ALT increases ≥3 times the upper limit of normal occurred in 0.61% in the resmetirom 80 mg group, 0.31% in the 100 mg group and 1.6% of patients in the placebo group.

Treatment-emergent adverse events ≥ grade 3 in severity occurred in 7.6% of patients in the resmetirom 80 mg group, 9.0% in the 100 mg group and 9.1% in the placebo group. Withdrawals due to adverse events were 2.4% in the 80 mg group, 2.8% in the 100 mg group and 1.3% in the placebo group. adverse events (diarrhea, nausea) were increased relative to placebo at the initiation of therapy but not after the first few weeks.

We plan to initiate a second NASH outcomes study, MAESTRO-NASH Outcomes, a randomized double-blind placebo-controlled study in approximately 700 patients with early NASH cirrhosis to allow for monitoring of progression to liver decompensation events. Several biomarker and imaging techniques will also be employed to assess correlates with disease progression. Ongoing open-label studies of more than 180 patients with well-compensated NASH cirrhosis open-label arm) support the potential of resmetirom in this patient population.

We secured a $250 million Loan Facility (“Loan Facility”) with Hercules Capital, Inc (“Hercules”) in May 2022. The committed capital strengthens our balance sheet, providing an additional source of funding both to support the expanded clinical program and for a potential launch of resmetirom in the U.S.

Under the terms of the loan agreement, $50 million was drawn at closing. We may also draw up to an additional $125 million in two separate tranches upon achievement of resmetirom clinical and regulatory milestones. An additional $75 million may be drawn by us, subject to the approval of Hercules. The loan facility has a minimum interest rate of 7.45% and adjusts with changes in the prime rate. We will pay interest-only for a period of 30 months, which may be extended to 60 months upon the achievement of certain clinical and regulatory milestones. The loan matures in May 2026 and may be extended an additional year upon the achievement of certain clinical and regulatory milestones. Additional details of the Loan Facility were filed with the Securities and Exchange Commission (“SEC”) on a Current Report on Form on May 9, 2022 and the Loan and Security Agreement associated with the Loan Facility is included as an exhibit to this Quarterly Report on Form

Our management’s discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amount of assets, liabilities, and expenses and the disclosure of contingent assets and liabilities as of the date of the financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued research and development expenses and stock-based compensation expense. We base our estimates on historical experience, known trends and events, and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ materially from these estimates under different assumptions or conditions. There have been no material changes in our critical accounting policies and significant judgments and estimates during the six months ended June 30, 2022, as compared to those disclosed in our Annual Report on Form for the fiscal year ended December 31, 2021 filed with the SEC on February 25, 2022.