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Mirum Pharmaceuticals, Inc.

For the period ended Jun 30, 2026. Filed Aug 5, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 5, 2026

MIRM$93.72+0.2%Stored close · as of Nov 6, 2026

What changed in Risk Factors?

Read the current filing

Previous report: 10-Q

Period ended 2026-03-31; filed 2026-05-06.

0001759425-26-000037

Item 1A. Risk Factors

Current report: 10-Q

Period ended 2026-06-30; filed 2026-08-05.

0001759425-26-000045

Item 1A. Risk Factors

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 521 previous paragraphs and 525 current paragraphs.

489 unchanged; 30 reworded; 2 added; 1 removed; 1 previous and 4 current paragraphs rearranged.

Tables are not compared: 0 previous and 0 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (2)

Current report

In July 2026, following a routine FDA inspection, we received a Form 483 observation related to our and our pharmacovigilance vendor’s failures to ensure certain expedited adverse event reports for our commercial products were submitted within required regulatory timeframes. We plan to remedy these failures and do not expect them to materially impact our business, but if similar failures occur in the future, we could become subject to the events or penalties described above.

Current report

We are aware Ipsen’s Sohonos is approved in the U.S. for the treatment of FOP. We are not aware of any European Commission approved therapeutics for the treatment of FOP. We are aware of several agents in clinical development for the treatment of FOP including Regeneron Pharmaceuticals Inc.’s garetosmab and Ashibio’s Inc.’s andecaliximab.
Removed paragraphs (1)

Previous report

On December 19, 2025, we, along with Satiogen Pharmaceuticals, Inc. and Shire Human Genetic Therapies, Inc. as co-plaintiffs, filed four complaints against Sandoz Inc. (“Sandoz”); Annora Pharma Private Limited, Hetero Labs Limited, and Hetero USA Inc. (together, “Hetero”); Zenara Pharma Private Limited and Biophore India Pharmaceuticals Private Limited (together, “Biophore”); and Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, and Zydus
Reworded paragraphs (30)

Previous wording

A trend in the healthcare industry is cost containment. Third-party payors are developing increasingly sophisticated methods of controlling healthcare costs by, among other methods, limiting or preventing (for example via prior authorization, prior therapy or step edit requirements) coverage for particular medications, requiring drug companies to provide them with varying levels of discounts from list prices and/or challenging the value of list prices charged for medical products. Similarly, the containment of healthcare costs has become a priority for federal, national, and state governments around the world. For example, the U.S. Department of Health and Human Services (“HHS”) imposes rebates on many Medicare Part B and Medicare Part D products to penalize price increases that outpace inflation on an annual basis. HHS has also been empowered to negotiate the price of certain single-source drugs that have been on the market for at least seven (7) years covered under Medicare as part of the Medicare Drug Price Negotiation Program. Each year up to twenty (20) products will be selected by HHS for the Medicare Drug Price Negotiation Program. Products subject to the Medicare Drug Price Negotiation Program are expected to experience a significant reduction in reimbursement from the Medicare program on a per unit basis. If coverage and adequate reimbursement are not available, or are available only to limited levels, we may not be able to successfully commercialize our current and any future product candidates that we develop, which could have an adverse effect on our operating results and our overall financial condition. Coverage decisions may depend upon the size of a patient population, perceptions of clinical efficacy and economic standards that may disfavor new drug products when more established or lower cost therapeutic alternatives are already available or subsequently become available.

Current wording

A trend in the healthcare industry is cost containment. Third-party payors are developing increasingly sophisticated methods of controlling healthcare costs by, among other methods, limiting or preventing (for example via prior authorization, prior therapy or step edit requirements) coverage for particular medications, requiring drug companies to provide them with varying levels of discounts from list prices and/or challenging the value of list prices charged for medical products. Similarly, the containment of healthcare costs has become a priority for federal, national, and state governments around the world. For example, the U.S. Department of Health and Human Services (“HHS”) imposes rebates on many Medicare Part B and Medicare Part D products to penalize price increases that outpace inflation. HHS has also been empowered to negotiate the price of certain single-source drugs that have been on the market for at least seven (7) years covered under Medicare as part of the Medicare Drug Price Negotiation Program. Each year up to twenty (20) products will be selected by HHS for the Medicare Drug Price Negotiation Program. Products subject to the Medicare Drug Price Negotiation Program are expected to experience a significant reduction in reimbursement from the Medicare program on a per unit basis. If coverage and adequate reimbursement are not available, or are available only to limited levels, we may not be able to successfully commercialize our current and any future product candidates that we develop, which could have an adverse effect on our operating results and our overall financial condition. Coverage decisions may depend upon the size of a patient population, perceptions of clinical efficacy and economic standards that may disfavor new drug products when more established or lower cost therapeutic alternatives are already available or subsequently become available.

Previous wording

In clinical trials of volixibat, the most common AEs reported in the volixibat treatment group were mild to moderate gastrointestinal (“GI”) events (diarrhea, abdominal pain, nausea and vomiting) and vitamin D deficiency. In the interim analysis of the PBC VANTAGE study, the incidence of diarrhea in patients on volixibat was 77% with all cases mild to moderate; one patient discontinued the study due to an AE of diarrhea. In the VISTAS study in PSC patients, diarrhea was reported in 40% of patients in the volixibat treatment group through week 28 compared to 9% on placebo. In the volixbat treatment arm, 9% of patients discontinued the study due to AEs compared to 3% on placebo. By week 28, three patients discontinued the study in the volixibat treatment arm due to diarrhea and one patient discontinued the study due to alanine aminotransferase (“ALT”) increases. Patients in the volixibat treatment group experienced more frequent elevations in liver laboratory values of ALT, aspartate aminotransferase (“AST”), alkaline phosphatase (“ALP”), and bilirubin and more AEs related to liver laboratory values such as increased ALT levels, increased blood bilirubin levels and jaundice compared to patients in the placebo group.

Current wording

In clinical trials of volixibat, the most common AEs reported in the volixibat treatment group were mild to moderate gastrointestinal (“GI”) events (diarrhea, abdominal pain, nausea and vomiting), vitamin D deficiency, and elevations in liver laboratory values. In the interim analysis of the PBC VANTAGE study, the incidence of diarrhea in patients on volixibat was 77% with all cases mild to moderate; one patient discontinued the study due to an AE of diarrhea. In the VISTAS study in PSC patients, diarrhea was reported in 40% of patients in the volixibat 20 mg treatment group through week 28 compared to 9% on placebo. In the volixibat 20 mg treatment arm, 9% of patients discontinued the study due to AEs compared to 2% on placebo. By week 28, three patients discontinued the study in the volixibat treatment arm due to diarrhea and one patient discontinued the study due to alanine aminotransferase (“ALT”) increases. Patients in the volixibat treatment group experienced more frequent elevations in liver laboratory values of ALT, aspartate aminotransferase (“AST”), alkaline phosphatase (“ALP”), and bilirubin and more AEs related to liver laboratory values such as increased ALT levels, increased blood bilirubin levels and jaundice compared to patients in the placebo group. Evaluation of liver safety and potential hepatotoxicity in VISTAS is being conducted by an independent committee of experts as part of the volixibat clinical program.

Previous wording

The most common adverse reactions for Cholbam (≥1%) are diarrhea, reflux esophagitis, malaise, jaundice, skin lesion, nausea, abdominal pain, intestinal polyp, urinary tract infection, and peripheral neuropathy. The most common (> 20%) AEs seen in patients on chenodiol in the RESTORE clinical trial included diarrhea, constipation and headache. The most common treatment emergent AEs seen in clinical trials of MRM-3379 include nausea and vomiting, all mild and moderate in severity.

Current wording

The most common adverse reactions for Cholbam (≥1%) are diarrhea, reflux esophagitis, malaise, jaundice, skin lesion, nausea, abdominal pain, intestinal polyp, urinary tract infection, and peripheral neuropathy. The most common (> 20%) AEs seen in patients on chenodiol in the RESTORE clinical trial included diarrhea, constipation and headache.

Previous wording

Even if such regulatory authorities agree with the design and implementation of our clinical trials, such regulatory authorities may change their requirements in the future. In addition, even if the clinical trials are successfully completed, the FDA, EMA or comparable foreign regulatory authorities may not interpret the results as we do, and more clinical trials could be required before we submit our product candidates for approval.

Current wording

Even if such regulatory authorities agree with the design and implementation of our clinical trials, such regulatory authorities may change their requirements in the future. In addition, even if the clinical trials are successfully completed, the FDA, EMA or comparable foreign regulatory authorities may not interpret the results as we do, and more clinical trials could be required before we submit our product candidates for approval. For example, while the VISTAS study was designed with input from the FDA to serve as a pivotal study, during recent communications with the FDA about the submission of an NDA for volixibat for the potential treatment of cholestatic pruritus in PSC, the FDA recommended that we conduct a Phase 3 study. We plan to engage in additional communications with the FDA regarding supporting a potential NDA submission based on the data from the VISTAS study. This engagement process will delay our planned NDA submission timeline and may not satisfactorily address the FDA’s concerns. A potential NDA submission following this FDA engagement process may not be accepted for filing by the FDA or may result in an approval for a narrow PSC patient population, if at all.

Previous wording

For example, each indication for which we are evaluating Livmarli, volixibat, and brelovitug is a rare liver disease with limited patient populations from which to draw participants in clinical trials. We will be required to identify and enroll a sufficient number of patients with the disease under investigation for each of our ongoing and planned clinical trials of Livmarli, volixibat, and brelovitug. Potential patients may not be adequately diagnosed or identified with the diseases which we are targeting or may not meet the entry criteria for our trials. In addition, patients may ultimately decide not to enroll in a particular clinical trial for reasons outside of our control. We may seek to conduct clinical trials in countries in which we have not previously conducted trials for our product candidates and in which we have not yet worked with the competent regulatory authorities. As a result, we could face patient recruitment issues in certain countries where such foreign regulatory authorities are not familiar with our product candidates. Additionally, other pharmaceutical companies targeting the same liver diseases are recruiting clinical trial patients from these patient populations, and have expanded access programs available, which have delayed enrollment in our clinical trials. Our inability to enroll a sufficient number of patients for any of our current or future clinical trials would result in significant delays. As a result, we may need to delay the completion of such trials beyond our expected timelines or abandon one or more clinical trials altogether.

Current wording

For example, each indication for which we are evaluating Livmarli, volixibat, MRM-3379, brelovitug and zilurgisertib is a rare disease with limited patient populations from which to draw participants in clinical trials. We will be required to identify and enroll a sufficient number of patients with the disease under investigation for each of our ongoing and planned clinical trials of Livmarli, volixibat, MRM-3379, brelovitug and zilurgisertib. Potential patients may not be adequately diagnosed or identified with the diseases which we are targeting or may not meet the entry criteria for our trials. In addition, patients may ultimately decide not to enroll in a particular clinical trial for reasons outside of our control. We may seek to conduct clinical trials in countries in which we have not previously conducted trials for our product candidates and in which we have not yet worked with the competent regulatory authorities. As a result, we could face patient recruitment issues in certain countries where such foreign regulatory authorities are not familiar with our product candidates. Additionally, other pharmaceutical companies targeting the same diseases are recruiting clinical trial patients from these patient populations, and have expanded access programs available, which have delayed enrollment in our clinical trials. Our inability to enroll a sufficient number of patients for any of our current or future clinical trials would result in significant delays. As a result, we may need to delay the completion of such trials beyond our expected timelines or abandon one or more clinical trials altogether.

Previous wording

Pursuant to the Hatch-Waxman Act, companies were permitted to file ANDA applications for proposed generic versions of LIVMARLI on or after September 29, 2025. We own, license or have acquired several patents that cover LIVMARLI, and we have listed those patents in conjunction with that product in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (the “Orange Book”). The Hatch-Waxman Act requires an ANDA applicant seeking FDA approval of its proposed generic product prior to the expiration of our Orange Book-listed patents to certify to the FDA, for all patents listed in the Orange Book for LIVMARLI, that (a) the applicant is not seeking approval until after the expiration date of the patent, or (b) the applicant believes the patent is invalid or will not be infringed by the manufacture, use or sale of the drug for which the application has been submitted (a paragraph IV certification) and notify us of such certification (a paragraph IV notice). For a method-of-treatment patent listed in the Orange Book, the applicant may also choose to submit a section viii statement certifying that its proposed product label does not contain any language regarding the patented method-of-use instead of certifying to the patent. Upon receipt of a paragraph IV notice, the Hatch-Waxman Act allows us, with proper basis, to bring an action for patent infringement against the ANDA filer, asking that the proposed generic product not be approved until after our patents expire. If we commence a lawsuit within 45 days from receipt of the paragraph IV notice, the FDA cannot finally approve the generic’s ANDA until the earlier of 30 months (known as the “30-month stay”), the expiration of the patent, settlement of the lawsuit, or a decision in the litigation resolving it in favor of the ANDA applicant. The discovery, trial and appeals process in such a lawsuit is costly, time consuming, and may result in generic competition if the ANDA applicant prevails.

Current wording

Pursuant to the Hatch-Waxman Act, companies were permitted to file ANDA applications for proposed generic versions of LIVMARLI on or after September 29, 2025. We own, license or have acquired several patents that cover LIVMARLI, and we have listed those patents in conjunction with that product in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (the “Orange Book”). The Hatch-Waxman Act requires an ANDA applicant seeking FDA approval of its proposed generic product prior to the expiration of our Orange Book-listed patents to certify to the FDA, for all patents listed in the Orange Book for LIVMARLI, that (a) the applicant is not seeking approval until after the expiration date of the patent, or (b) the applicant believes the patent is invalid or will not be infringed by the manufacture, use or sale of the drug for which the application has been submitted (a paragraph IV certification) and notify us of such certification (a paragraph IV notice). For a method-of-treatment patent listed in the Orange Book, the applicant may also choose to submit a section viii statement certifying that its proposed product label does not contain any language regarding the patented method-of-use instead of certifying to the patent. Upon receipt of a paragraph IV notice, the Hatch-Waxman

Previous wording

Pharmaceuticals (USA) Inc. (together, “Zydus”) (all collectively, “Defendants”) in the U.S. District Court for the District of Delaware (the “LIVMARLI Patent Litigations”), alleging infringement of certain Orange Book listed patents covering LIVMARLI (the “LIVMARLI Patents”). The LIVMARLI Patent Litigations were initiated, in accordance with the procedures set out in the Hatch-Waxman Act, following the submission by Defendants of ANDAs directed to generic versions of LIVMARLI. Defendants’ ANDAs seek approval to market generic versions of LIVMARLI prior to the expiration of one or more of the LIVMARLI Patents and allege that one or more of the LIVMARLI Patents are invalid, unenforceable, and/or not infringed. We are seeking, among other relief, an order that the effective date of any FDA approval of Defendants’ ANDAs be no earlier than the expiration of the asserted patents, and such further and other relief as the court may deem appropriate. Based on our initiating the litigation, a 30-month stay is in place through March 29, 2029, preventing Defendants from marketing generic versions of LIVMARLI® during that time, subject to the exceptions noted above. On February 20, 2026, Sandoz asserted counterclaims against us and our co-plaintiffs seeking declaratory judgments of non-infringement and invalidity with respect to certain LIVMARLI Patents. On March 30, 2026, Biophore asserted counterclaims against us and our co-plaintiffs seeking declaratory judgments of non-infringement and invalidity with respect to certain LIVMARLI Patents. We and our co-plaintiffs have denied all asserted declaratory judgment claims. On April 16, 2026, the Court ordered that the four pending cases against Sandoz, Hetero, Biophore and Zydus be consolidated for pretrial purposes. Trial in the LIVMARLI Patent Litigations has not yet been scheduled. We cannot make any predictions about the final outcome of these matters or the timing thereof.

Current wording

For example, on December 19, 2025, we, along with certain co-plaintiffs, filed four complaints in the U.S. District Court for the District of Delaware against multiple defendants alleging infringement of certain Orange Book listed patents covering LIVMARLI in connection with ANDAs directed to generic versions of LIVMARLI (the “LIVMARLI Patent Litigations”). For additional information regarding the LIVMARLI Patent Litigations, see Note 13 to our unaudited condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q under the heading “Legal Proceedings.” We cannot make any predictions about the final outcome of these matters or the timing thereof.

Previous wording

Investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that any potential product candidate will fail to demonstrate adequate effectiveness in the targeted indication or an acceptable safety profile, gain regulatory approval and become commercially viable. While we have three medicines approved for commercial sale, we continue to incur significant research and development and other expenses related to our ongoing operations. As a result, we are not profitable and have incurred substantial net losses since our inception in May 2018. For the three months ended March 31, 2026 and 2025, we reported a net loss of $790.2 million and $14.7 million, respectively. As of March 31, 2026, we had an accumulated deficit of $1.5 billion.

Current wording

Investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that any potential product candidate will fail to demonstrate adequate effectiveness in the targeted indication or an acceptable safety profile, gain regulatory approval and become commercially viable. While we have three medicines approved for commercial sale, we continue to incur significant research and development and other expenses related to our ongoing operations. As a result, we are not profitable and have incurred substantial net losses since our inception in May 2018. For the six months ended June 30, 2026 and 2025, we reported a net loss of $857.4 million and $20.5 million, respectively. As of June 30, 2026, we had an accumulated deficit of $1.5 billion.

Previous wording

Medicare Drug Price Negotiation Program and establishing Most-Favored-Nation pricing for pharmaceutical products; (3) imposing tariffs on imported pharmaceutical products; and (4) as part of the Make America Healthy Again Commission’s Strategy Report released in September 2025, working across government agencies to increase enforcement on direct-to-consumer pharmaceutical advertising. Additionally, the current administration recently called on Congress to enact “The Great Healthcare Plan” to codify and expand Most-Favored Nation pricing, lower government subsidies to private insurance companies, increase healthcare price transparency, expand pharmaceutical drugs available for over-the-counter purchase, and enact restrictions on pharmacy benefit manager payment methodologies, among other things. These actions and policies may significantly reduce U.S. drug prices, potentially impacting manufacturers’ global pricing strategies and profitability, while increasing their operational costs and compliance risks. Congress may introduce and ultimately pass health care related legislation that could impact the drug approval process and make changes to the Medicare Drug Price Negotiation Program created under the Inflation Reduction Act (“IRA”). Additionally, in its June 2024 decision in Loper Bright Enterprises v. Raimondo (“Loper Bright”), the U.S. Supreme Court greatly reduced judicial deference to regulatory agencies, which could increase successful legal challenges to federal regulations affecting our operations. We expect that additional U.S. federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that the U.S. federal government will pay for healthcare products and services, which could result in reduced demand for our product candidates or additional pricing pressures. It is unclear how any such additional health care reform measures will impact our business.

Current wording

The current administration is pursuing policies to reduce regulations and expenditures across government agencies including at HHS, the FDA, CMS and related agencies. These actions, presently directed by executive orders or memoranda from the Office of Management and Budget, may propose policy changes that create additional uncertainty for our business. For example, the current administration has announced agreements with certain pharmaceutical companies that require the drug manufacturers to offer, through a direct to consumer platform (sometimes referred to as “TrumpRx”), U.S. patients and Medicaid programs prescription drug Most-Favored Nation pricing equal to or lower than those paid in other developed nations, with additional mandates for direct-to-patient discounts and repatriation of foreign revenues. Other recent actions, for example, include (1) directing agencies to reduce agency workforce and cut programs; (2) directing HHS and other agencies to lower prescription drug costs through a variety of initiatives, including by improving upon the Medicare Drug Price Negotiation Program and establishing Most-Favored-Nation pricing for pharmaceutical products; (3) imposing tariffs on imported pharmaceutical products; and (4) as part of the Make America Healthy Again Commission’s Strategy Report released in September 2025, working across government agencies to increase enforcement on direct-to-consumer pharmaceutical advertising. Additionally, the current administration recently called on Congress to enact “The Great Healthcare Plan” to codify and expand Most-Favored Nation pricing, lower government subsidies to private insurance companies, increase healthcare price transparency, expand pharmaceutical drugs available for over-the-counter purchase, and enact restrictions on pharmacy benefit manager payment methodologies, among other things. These actions and policies may significantly reduce U.S. drug prices, potentially impacting manufacturers’ global pricing strategies and profitability, while increasing their operational costs and compliance risks. Congress may introduce and ultimately pass health care related legislation that could impact the drug approval process and make changes to the Medicare Drug Price Negotiation Program created under the Inflation Reduction Act (“IRA”). Additionally, in its June 2024 decision in Loper Bright Enterprises v. Raimondo (“Loper Bright”), the U.S. Supreme Court greatly reduced judicial deference to regulatory agencies, which could increase successful legal challenges to federal regulations affecting our operations. We expect that additional U.S. federal healthcare reform measures will be adopted in the future, any of which could limit the amounts that the U.S. federal government will pay for healthcare products and services, which could result in reduced demand for our product candidates or additional pricing pressures. It is unclear how any such additional health care reform measures will impact our busines…

Excerpt shortened here; the source contains the full paragraph.

Previous wording

At the state level, individual states in the U.S. have also increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. Legally mandated price controls on payment amounts by third-party payors or other restrictions could harm our business, results of operations, financial condition and prospects. In addition, regional healthcare authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in their prescription drug and other healthcare programs. This could reduce the ultimate demand for our approved medicines and our other product candidates, if approved, or put pressure on our product pricing, which could negatively affect our business, results of operations, financial condition and prospects.

Current wording

At the state level, individual states in the U.S. have also increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. For example, on June 15, 2026, the FDA approved Colorado’s Section 804 Importation Program (“SIP”) proposal to import certain drugs from Canada for specific state healthcare programs. It is unclear how this and Florida’s similar program, approved by the FDA in 2024, will be implemented and whether they will overcome potential legal, regulatory, or industry challenges in the United States and/or Canada. Legally mandated price controls on payment amounts by third-party payors or other restrictions could harm our business, results of operations, financial condition and prospects. In addition, regional healthcare authorities and individual hospitals are increasingly using bidding procedures to determine what pharmaceutical products and which suppliers will be included in their prescription drug and other healthcare programs. This could reduce the ultimate demand for our approved medicines and our other product candidates, if approved, or put pressure on our product pricing, which could negatively affect our business, results of operations, financial condition and prospects.

Previous wording

On December 11, 2025, the European Commission, the Parliament and the European Council reached a political agreement on a comprehensive overhaul of EU pharmaceutical legislation (the “Pharma Package”). The reform has been under negotiation since the European Commission submitted its proposal in April 2023. The Pharma Package, comprised of a new directive and regulation to replace existing legislation, aims to modernize the EU framework. The political agreement is still subject to formal approval by the European Parliament and Council. If approved in the form proposed, the Pharma Package will, among other changes, reduce the baseline market protection period by one year, with limited opportunities for extensions, capped at a maximum of eleven years; reshape the incentives regime for orphan medicinal products, by introducing “breakthrough” orphan medicinal products (those addressing diseases with no available medicinal treatment) which will benefit from 11 years of market exclusivity; and expand the “Bolar” exemption to permit generic and biosimilar manufacturers to conduct preparatory activities for regulatory submissions, including pricing and reimbursement, and participate in procurement tenders while patent protection remains in force. A decrease in market exclusivity opportunities for our product candidates in the EU, combined with the expanded Bolar exemption, could open them to generic or biosimilar competition earlier than under the current regime, potentially impacting reimbursement status and the commercial prospects of our product candidates.

Current wording

On December 11, 2025, the European Commission, the Parliament and the European Council reached a political agreement on a comprehensive overhaul of EU pharmaceutical legislation (the “Pharma Package”). The reform has been under negotiation since the European Commission submitted its proposal in April 2023. The Pharma Package, comprised of a new directive and regulation to replace existing legislation, aims to modernize the EU framework. The political agreement is still subject to formal approval by the European Parliament and Council. If approved in the form proposed, the Pharma Package will, among other changes, reduce the baseline market protection period by one year, with limited opportunities for extensions, capped at a maximum of eleven years; reshape the incentives regime for orphan medicinal products, by introducing “breakthrough” orphan medicinal products (those addressing diseases with no available medicinal treatment) which will benefit from 11 years of market exclusivity; and expand the “Bolar” exemption to permit generic and biosimilar manufacturers to conduct preparatory activities for regulatory submissions, including pricing and reimbursement, and participate in procurement tenders while patent protection remains in force. A decrease in market exclusivity opportunities for our product candidates in the EU, combined with the expanded Bolar exemption, could open them to generic or biosimilar competition earlier than under the current regime, potentially impacting reimbursement status and the commercial prospects of our product candidates. Other legislative initiatives include the proposed SPC Regulation revision, the proposed Critical Medicines Act (for which a provisional political agreement was reached in May 2026), and the proposed Biotech Act.

Previous wording

We are aware of two other companies pursuing clinical development and commercialization of therapies that reduce sBA levels via the IBAT pathway. Ipsen has an IBATis in clinical development for cholestatic liver disease and Alfasigma has acquired the worldwide exclusive rights to develop, manufacture, and commercialize linerixibat, an IBATi previously developed by GSK.

Current wording

We are aware of two other companies pursuing clinical development and commercialization of therapies that reduce sBA levels via the IBAT pathway. Ipsen has IBATis in clinical development for cholestatic liver disease and Alfasigma has acquired the worldwide exclusive rights to develop, manufacture, and commercialize linerixibat, an IBATi previously developed by GSK.

Previous wording

In adult settings of cholestasis, similar to pediatric settings, cholestyramine, UDCA, rifampin and naltrexone are commonly used agents. We are aware that Alfasigma S.p.’s (formerly Intercept Pharmaceuticals, Inc.) Ocaliva, Gilead Science’s Livdelzi, and Ipsen’s Iqirvo are approved as a second-line treatment for PBC in patients with inadequate response to ursodeoxycholic acid. We are aware of several agents in clinical development for the treatment of PBC including Alfasigma’s Ocaliva and bezafibrate, Zydus Therapeutics Inc.’s saroglitazar magnesium, Calliditas Therapeutics AB’s setanaxib, COUR Pharmaceuticals’ CNP-104, Umecrine Cognition’s golexanolone, Kowa Company Ltd’s K-808, HighTide Therapeutics Inc.’s HTD-1801, Hepagene Therapeutics Inc.’s HPG-1860, Tharimmune Inc.’s TH-104, Cascade Pharmaceuticals Inc.’s CS-0159, and GSK’s linerixibat, another IBATi.

Current wording

In adult settings of cholestasis, similar to pediatric settings, cholestyramine, UDCA, rifampin and naltrexone are commonly used agents. We are aware that Gilead Science’s Livdelzi, and Ipsen’s Iqirvo are approved as a second-line treatment for PBC in patients with inadequate response to ursodeoxycholic acid. We are also aware that Alfasigma’s Lynavoy, another IBATi, is approved for the treatment of cholestatic pruritus due to PBC in the U.S. We are aware of several agents in clinical development for the treatment of PBC including Alfasigma’s Ocaliva and bezafibrate, Assembly Biosciences Inc.’s ABI-6250, Zydus Therapeutics Inc.’s saroglitazar magnesium, Calliditas Therapeutics AB’s setanaxib, COUR Pharmaceuticals’ CNP-104, Umecrine Cognition’s golexanolone, Kowa Company Ltd’s K-808, HighTide Therapeutics Inc.’s HTD-1801, Hepagene Therapeutics Inc.’s HPG-1860, Tharimmune Inc.’s TH-104, and Cascade Pharmaceuticals Inc.’s CS-0159.

Previous wording

We are not aware of FDA or European Commission approved therapeutics for the treatment of PSC. We are aware of several agents in clinical development for the treatment of PSC, including Dr. Falk Pharma's Norucholic acid, HighTide Therapeutics Inc.’s HTD-1801, Alfasigma’s Ocaliva, or obeticholic acid, Ipsen’s elafibranor and ritivixibat, NGM Biopharmaceuticals Inc.’s NGM282, Chemomab Therapeutics Ltd.’s CM-101, Cascade Pharmaceuticals Inc.’s CS-0159, LISCure Biosciences Inc.’s LB-P8, Halo Biosciences Inc.’s HB-1614, ProQR Therapeutics N.V.’s AX-0810, Rectify Pharmaceuticals, Inc.’s RTY-694 and Pliant Therapeutics’ bexotegrast.

Current wording

We are not aware of FDA or European Commission approved therapeutics for the treatment of PSC. We are aware of several agents in clinical development for the treatment of PSC, including Dr. Falk Pharma's Norucholic acid, HighTide Therapeutics Inc.’s HTD-1801, Alfasigma’s Ocaliva, or obeticholic acid, Ipsen’s elafibranor, Assembly Biosciences Inc.’s ABI-6250, NGM Biopharmaceuticals Inc.’s NGM282, Chemomab Therapeutics Ltd.’s CM-101, Cascade Pharmaceuticals Inc.’s CS-0159, LISCure Biosciences Inc.’s LB-P8, Halo Biosciences Inc.’s HB-1614, ProQR Therapeutics N.V.’s AX-0810 and AX-8011, Takeda’s TAK-781, Rectify Pharmaceuticals, Inc.’s RTY-694 and Pliant Therapeutics’ bexotegrast.

Previous wording

There are currently no approved products available in the U.S. for the treatment of chronic HDV infection. Bulevirtide, which is commercialized by Gilead Sciences, is approved for commercial sale in the EU and Gilead is seeking approval from the FDA to commercialize bulevirtide in the U.S. In addition, we are aware that Vir Biotechnology is developing tobevibart in combination with elebsiran for the treatment of chronic HDV. We are aware of several other agents in clinical development for the treatment of chronic HDV including Gilead Science’s GS-4321, Shanghai HEP Pharmaceutical Co., Ltd.’s Hepalatide, Suzhou Ribo Life Science Co., Ltd.'s RBD1016, Assembly Biosciences’s ABI-6250, Huahui Health Ltd.’s Libevitug and HH-1270, Replicor Inc.’s REP 2139-Mg and REP 2139-Ca, and EIT Pharma’s Jitixib® (Lonafarnib).

Current wording

Bulevirtide, which is commercialized by Gilead Sciences, is approved for commercial sale in the U.S. and EU for the treatment of chronic HDV infection. We are also aware that Huahui Health Ltd.’s Libevitug is approved for the treatment of chronic HDV infection in China and in clinical development for approval in additional geographies. In addition, we are aware that Vir Biotechnology is developing tobevibart in combination with elebsiran for the treatment of chronic HDV. We are aware of several other agents in clinical development for the treatment of chronic HDV including Gilead Science’s GS-4321, Shanghai HEP Pharmaceutical Co., Ltd.’s Hepalatide, Suzhou Ribo Life Science Co., Ltd.'s RBD1016, Assembly Biosciences’s ABI-6250, Huahui Health Ltd.’s HH-1270, Replicor Inc.’s REP 2139-Mg and REP 2139-Ca, and EIT Pharma’s Jitixib® (Lonafarnib).

Previous wording

We are not aware of FDA or European Commission approved therapeutics for the treatment of FXS. We are aware of one other company, Shionogi & Co., LTD., pursuing clinical development of a PDE4D inhibitor (zatomilast/BPN14770) in FXS. We are aware of several other companies pursuing clinical development of therapies for FXS including Harmony Biosciences Inc.’s ZYN002, Allos Pharma Inc.’s Arbaclofen, Healx Ltd.’s Gabaxodol, Spinogenix Inc.’s SPG601, Connecta Therapeutics S.L.’s CTH120, and Kaerus Therapeutics Inc.’s KER-0193.

Current wording

We are not aware of FDA or European Commission approved therapeutics for the treatment of FXS. We are aware of one other company, Shionogi & Co., LTD., pursuing clinical development of a PDE4D inhibitor (zatomilast/BPN14770) in FXS. We are aware of several other companies pursuing clinical development of therapies for FXS including Harmony Biosciences Inc.’s ZYN002, Allos Pharma Inc.’s Arbaclofen, Healx Ltd.’s Gabaxodol, Spinogenix Inc.’s SPG601, Connecta Therapeutics S.L.’s CTH120, and Servier Pharmaceuticals Inc.’s KER-0193.

Previous wording

Regulatory authorities in some jurisdictions, including the U.S. and the EU, may designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a drug as an orphan drug if it is intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals in the U.S., or a patient population of greater than 200,000 individuals in the U.S., but for which there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the U.S. In the EU, the European Commission, on the basis of the opinion of the EMA Committee for Orphan Medicinal Products (“COMP”), grants orphan drug designation for medicines to be developed for the diagnosis, prevention or treatment of diseases that are life-threatening or chronically debilitating, for which either no satisfactory method of diagnosis, prevention, or treatment exists, or if such method exists, the medicine is of significant benefit to those affected by such condition. To benefit from such designation, either the prevalence of such condition must not be more than five in 10,000 people across the EU or, if more prevalent, it must be unlikely that the marketing of the medicine would generate sufficient returns to justify the investment needed for its development. In September 2013, the FDA granted orphan drug status to Livmarli for the treatment of patients with PFIC and ALGS in the U.S. We also received orphan drug designation for Livmarli for PFIC and ALGS in the EU. In 2025, the FDA and COMP granted orphan drug designation for volixibat for PBC and PSC. The FDA granted orphan drug designation for chenodiol for the treatment of CTX in 2010. COMP granted orphan drug designation for brelovitug for hepatitis D virus infection in 2024. Generally, if a drug with an orphan drug designation subsequently receives the first marketing approval for the indication for which it has such designation, the drug may be entitled to a period of marketing exclusivity, which precludes the FDA or the European Commission from approving another marketing application for the same drug (or, in the case of the European Commission, a similar drug) for the same indication for that time period. The applicable period is seven years in the U.S. and ten years in the EU, which may be extended by six months and two years, respectively, in the case of product candidates that have complied with the respective regulatory authority’s agreed upon pediatric investigation plan (“PIP”). There is, however, a legislative proposal pending in the EU that may modify the length of orphan market exclusivity, change the way in which market exclusivity is awarded to drugs with more than one approved orphan indication. The exclusivity period in the EU can be reduced to six years if at the end of the fifth year a drug no longer meets the criteria for orphan drug designation or if the drug is sufficiently profitable s…

Excerpt shortened here; the source contains the full paragraph.

Current wording

Regulatory authorities in some jurisdictions, including the U.S. and the EU, may designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a drug as an orphan drug if it is intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals in the U.S., or a patient population of greater than 200,000 individuals in the U.S., but for which there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the U.S. In the EU, the European Commission, on the basis of the opinion of the EMA Committee for Orphan Medicinal Products (“COMP”), grants orphan drug designation for medicines to be developed for the diagnosis, prevention or treatment of diseases that are life-threatening or chronically debilitating, for which either no satisfactory method of diagnosis, prevention, or treatment exists, or if such method exists, the medicine is of significant benefit to those affected by such condition. To benefit from such designation, either the prevalence of such condition must not be more than five in 10,000 people across the EU or, if more prevalent, it must be unlikely that the marketing of the medicine would generate sufficient returns to justify the investment needed for its development. In September 2013, the FDA granted orphan drug status to Livmarli for the treatment of patients with PFIC and ALGS in the U.S. We also received orphan drug designation for Livmarli for PFIC and ALGS in the EU. In 2025, the FDA and COMP granted orphan drug designation for volixibat for PBC and PSC. The FDA granted orphan drug designation for chenodiol for the treatment of CTX in 2010. COMP granted orphan drug designation for brelovitug for hepatitis D virus infection in 2024. Generally, if a drug with an orphan drug designation subsequently receives the first marketing approval for the indication for which it has such designation, the drug may be entitled to a period of marketing exclusivity, which precludes the FDA or the European Commission from approving another marketing application for the same drug (or, in the case of the European Commission, a similar drug) for the same indication for that time period. The applicable period is seven years in the U.S. and ten years in the EU, which may be extended by six months and two years, respectively, in the case of product candidates that have complied with the respective regulatory authority’s agreed upon pediatric investigation plan (“PIP”). In December 2025, the European Commission, Parliament and Council reached a political agreement on the Pharma Package, which includes proposed changes to the EU orphan medicinal product framework that may modify the length of orphan market exclusivity and change the way in which market exclusivity is awarded to drugs with more than one approved orphan indication. The Pharma Package is subject to formal adoption by the Europ…

Excerpt shortened here; the source contains the full paragraph.

Previous wording

As of March 31, 2026, we had 418 full-time employees. As our development and commercialization plans and strategies develop, we expect to need additional development, managerial, operational, financial, sales, marketing and other personnel. Future growth would impose significant added responsibilities on members of management, including:

Current wording

As of June 30, 2026, we had 433 full-time employees. As our development and commercialization plans and strategies develop, we expect to need additional development, managerial, operational, financial, sales, marketing and other personnel. Future growth would impose significant added responsibilities on members of management, including:

Previous wording

We may seek additional capital through a combination of public and private equity offerings, debt financings, strategic partnerships and alliances and licensing arrangements. For example, in April 2023, we issued and sold $316.3 million aggregate principal amount of the Notes. In August 2023, in connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed a private placement of our common stock, pursuant to which we issued 8,000,000 shares of our common stock. In November 2023, we entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink Partners LLC and Cantor Fitzgerald & Co., pursuant to which we may elect to issue and sell, from time to time, shares of common stock having an aggregate offering price of up to $200.0 million. In January and February 2026, we issued 4,517,062 shares of our common stock in connection with the closing of the Bluejay Acquisition, and may issue up to 522,375 shares of our common stock in the future subject to certain conditions. Further, immediately following the closing of the Bluejay Acquisition, we issued and sold in two private placement offerings an aggregate of (i) 3,385,149 shares of our commons stock and (ii) pre-funded warrants to purchase 536,412 shares of our common stock, for aggregate gross proceeds of approximately $268.5 million. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our stockholders as such. For example, pursuant to the terms of the Notes and the related indenture (the “Indenture”), between us and U.S. Bank Trust Company, National Association, as trustee, our Notes are subject to conversion at the election of the holders for the quarterly period ending June 30, 2026, and if such an election is made and we elect to settle such conversion obligation under the Notes in shares of our common stock or a combination of cash and shares of our common stock as we have done in the past, the issuance of such common stock would dilute the ownership interests of our stockholders and sales in the public market could adversely affect prevailing market prices. The incurrence of indebtedness would result in increased fixed payment obligations and could involve certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to acquire or license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. If we raise additional funds through strategic partnerships and alliances and licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies or product candidates, or grant licenses on terms unfavorable to us.

Current wording

We may seek additional capital through a combination of public and private equity offerings, debt financings, strategic partnerships and alliances and licensing arrangements. For example, in April 2023, we issued and sold $316.3 million aggregate principal amount of the 2029 Notes, of which approximately $79.0 million aggregate principal amount remain outstanding as of June 30, 2026. In August 2023, in connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed a private placement of our common stock, pursuant to which we issued 8,000,000 shares of our common stock. In November 2023, we entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink Partners LLC and Cantor Fitzgerald & Co., pursuant to which we may elect to issue and sell, from time to time, shares of common stock having an aggregate offering price of up to $200.0 million. In January and February 2026, we issued 4,517,062 shares of our common stock in connection with the closing of the Bluejay Acquisition, and may issue up to 522,375 shares of our common stock in the future subject to certain conditions. Further, immediately following the closing of the Bluejay Acquisition, we issued and sold in two private placement offerings an aggregate of (i) 3,385,149 shares of our common stock and (ii) pre-funded warrants to purchase 536,412 shares of our common stock, for aggregate gross proceeds of approximately $268.5 million. In May 2026, we issued and sold $690.0 million aggregate principal amount of the 2032 Notes. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our stockholders as such.

Previous wording

Holders of the Notes may, subject to a limited exception described in certain provisions in the Notes and the related Indenture require us to repurchase the Notes following a fundamental change at a cash repurchase price generally equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any. In addition, upon conversion, we will satisfy part or all of our conversion obligation in cash unless we elect to settle conversions solely in shares of our common stock. We may not have enough available cash or be able to obtain financing at the time we are required to repurchase the Notes or pay any cash amounts due upon conversion. In addition, applicable law, regulatory authorities and agreements governing any future indebtedness may restrict our ability to repurchase the Notes or pay any cash amounts due upon conversion. Our failure to repurchase the Notes or to pay any cash amounts due upon conversion when required will constitute a default under the Indenture. A default under the Indenture or the fundamental change itself could also lead to a default under agreements governing any future indebtedness, which may result in any future indebtedness becoming immediately payable in full. We may not have sufficient funds to satisfy all amounts due under any future indebtedness and the Notes.

Current wording

Holders of the Notes may, subject to a limited exception described in certain provisions in the Notes and the 2029 Notes Indenture or the indenture relating to the 2032 Notes (the ”2032 Notes Indenture” and, together with the 2029 Notes Indenture, the “Indentures”), between us and U.S. Bank Trust Company, National Association, as applicable, require us to repurchase the Notes following a fundamental change at a cash repurchase price generally equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any. In addition, upon conversion, we will satisfy part or all of our conversion obligation in cash unless we elect to settle conversions solely in shares of our common stock. We may not have enough available cash or be able to obtain financing at the time we are required to repurchase the Notes or pay any cash amounts due upon conversion. In addition, applicable law, regulatory authorities and agreements governing any future indebtedness may restrict our ability to repurchase the Notes or pay any cash amounts due upon conversion. Our failure to repurchase the Notes or to pay any cash amounts due upon conversion when required will constitute a default under the applicable Indenture. A default under such Indenture or the fundamental change itself could also lead to a default under agreements governing any existing or future indebtedness, including the other Indenture, which may result in any such indebtedness becoming immediately payable in full. We may not have sufficient funds to satisfy all amounts due under the Notes or any future indebtedness.

Previous wording

As of March 31, 2026, we had $316.2 million aggregate principal amount of indebtedness under the Notes.

Current wording

As of June 30, 2026, we had $769.0 million aggregate principal amount of indebtedness under the Notes.

Previous wording

The conditional conversion feature of the Notes may adversely affect our financial condition and operating results, and conversion of our outstanding Notes may result in the dilution of existing stockholders, create downward pressure on the price of our common stock, and restrict our ability to take advantage of future opportunities.

Current wording

The conditional conversion feature of the Notes may adversely affect our financial condition and operating results, and conversion of our outstanding Notes may result in the dilution of existing stockholders and create downward pressure on the price of our common stock.

Previous wording

The conditional conversion feature of the Notes entitles holders of the Notes to convert the Notes at any time during specified periods at their option if such conditions are met. For example, the conditional conversion feature of the Notes has been met previously, including in March 2026. Consequently, for prior quarterly periods, the Notes were, and for the quarterly period ending June 30, 2026, the Notes are, subject to conversion at the election of the holders. If one or more holders elect to convert their Notes, unless we elect to satisfy our conversion obligation by delivering solely shares of our common stock (other than paying cash in lieu of delivering any fractional share), we would be required to settle a portion or all of our conversion obligation in cash, which could adversely affect our liquidity.

Current wording

The conditional conversion feature of the Notes entitles holders of the Notes to convert the Notes at any time during specified periods at their option if such conditions are met. For example, the conditional conversion feature of the 2029 Notes has been met previously, including for the quarterly period ending June 30, 2026. Consequently, for prior quarterly periods, the 2029 Notes were, and for the quarterly period ending September 30, 2026, the 2029 Notes are, subject to conversion at the election of the holders. If one or more holders elect to convert their 2029 Notes, unless we elect to satisfy our conversion obligation by delivering solely shares of our common stock (other than paying cash in lieu of delivering any fractional share), we would be required to settle a portion or all of our conversion obligation in cash, which could adversely affect our liquidity.

Previous wording

The Notes may be converted into cash, shares of our common stock or a combination of cash and shares of our common stock. If shares of our common stock are issued to the holders of the Notes upon conversion as they have been in the past, there will be dilution to our stockholders’ equity and the market price of our shares may decrease due to the additional selling pressure in the market. Any downward pressure on the price of our common stock caused by the sale or potential sale of shares issuable upon conversion of the Notes could also encourage short sales by third parties, creating additional selling pressure on our stock. The existence of the Notes and the obligations that we incurred by issuing them may restrict our ability to take advantage of certain future opportunities, such as engaging in future debt or equity financing activities.

Current wording

Additionally, if we elect to settle such conversion obligation in shares of our common stock or a combination of cash and shares of our common stock as we have done in the past, the issuance of such shares of common stock would dilute the ownership interests of our stockholders and any sales in the public market of such shares of common stock could adversely affect prevailing market prices. Any downward pressure on the price of our common stock caused by the sale or potential sale of shares issuable upon conversion of the Notes could also encourage short sales by third parties, creating additional selling pressure on our stock.

Previous wording

Also, ASU No. 2020-06 requires the application of the if-converted method to calculate the impact of convertible instruments on diluted earnings per share when the instruments may be settled in cash or shares. See Note 2, Summary of Significant Accounting Policies. During the three months ended March 31, 2026, the conditional conversion feature of the Notes was triggered and the Notes are convertible, in whole or in part, at the option of the holders between April 1, 2026 through June 30, 2026. We use the if-converted method for calculating any potential dilutive effect of the conversion options embedded in the Notes on diluted net income per share.

Current wording

During the three months ended June 30, 2026, the conditional conversion feature of the 2029 Notes was triggered and the 2029 Notes are convertible, in whole or in part, at the option of the holders between July 1, 2026 through September 30, 2026.

Previous wording

In addition, the shares underlying the Notes are reflected in our diluted earnings per share using the “if converted” method, in accordance with ASU 2020-06. Under that method, diluted earnings per share would generally be calculated assuming that all the Notes were converted solely into shares of common stock at the beginning of the reporting period, unless the result would be anti-dilutive. The application of the if-converted method may reduce our reported diluted earnings per share.

Current wording

In addition, the shares underlying the Notes are reflected in our diluted earnings per share using the “if converted” method, in accordance with ASU 2020-06. Under that method, diluted earnings per share would generally be calculated assuming that all the Notes were converted solely into shares of common stock at the beginning of the reporting period, unless the result would be anti-dilutive. The application of the if-converted method may reduce our reported diluted earnings per share. See Note 2, Summary of Significant Accounting Policies.

Previous wording

For U.S. patent applications containing a claim not entitled to priority before March 16, 2013, there is greater level of uncertainty in the patent law. In September 2011, the Leahy-Smith America Invents Act, or America Invents Act, was signed into law. The America Invents Act includes a number of significant changes to U.S. patent law, including provisions that affect the way patent applications will be prosecuted and may also affect patent litigation. The USPTO has developed regulations and procedures to govern the administration of the America Invents Act, and many of the substantive changes to patent law associated with the America Invents Act, and in particular, the “first to file” provisions, were enacted on March 16, 2013. The America Invents Act and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents, all of which could have a material adverse effect on our business and financial condition.

Current wording

For U.S. patent applications containing a claim not entitled to priority before March 16, 2013, there is greater level of uncertainty in the patent law. In September 2011, the Leahy-Smith America Invents Act, or America Invents Act, was signed into law. The America Invents Act includes a number of significant changes to U.S. patent law, including provisions that affect the way patent applications will be prosecuted and may also affect patent litigation. The USPTO has developed regulations and procedures to govern the administration of the America Invents Act, and many of the substantive changes to patent law associated with the America Invents Act, and in particular, the “first to file” provisions, were enacted on March 16, 2013. The America Invents Act and its implementation could increase the uncertainties and

Previous wording

The trading price of our common stock is likely to be highly volatile and could be subject to wide fluctuations in response to various factors, some of which are beyond our control, including limited trading volume. For example, the closing price of our common stock since January 1, 2026 to May 5, 2026 has ranged from a low of $75.56 to a high of $108.62. In addition to the factors discussed in this “Risk Factors” section, these factors include, among others:

Current wording

The trading price of our common stock is likely to be highly volatile and could be subject to wide fluctuations in response to various factors, some of which are beyond our control, including limited trading volume. For example, the closing price of our common stock since January 1, 2026 to August 4, 2026 has ranged from a low of $75.56 to a high of $128.57. In addition to the factors discussed in this “Risk Factors” section, these factors include, among others:

Previous wording

Further, certain holders of our common stock are entitled to rights with respect to the registration of their shares under the Securities Act. Registration of these shares under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act, except for shares held by affiliates, as defined in Rule 144 under the Securities Act. Any sales of securities by these stockholders could have a material adverse effect on the trading price of our common stock.

Current wording

Further, certain holders of our common stock are entitled to rights with respect to the registration of their shares under the Securities Act. Registration of these shares under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act, except for shares held by affiliates, as defined in Rule 144 under the

Previous wording

In addition, certain provisions in the Notes and the related Indenture could make a third party’s attempt to acquire us more difficult or expensive. For example, if a takeover constitutes a fundamental change under our Indenture, then noteholders will have the right to require us to repurchase their Notes for cash. In addition, if a takeover constitutes a make-whole fundamental change under our Indenture, then we may be required to temporarily increase the conversion rate. In either case, and in other cases, our obligations under the Notes and the Indenture could increase the cost of acquiring us or otherwise discourage a third party from acquiring us or removing incumbent management, including in a transaction that noteholders or holders of our common stock may view as favorable.

Current wording

In addition, certain provisions in the Notes and the related Indentures could make a third party’s attempt to acquire us more difficult or expensive. For example, if a takeover constitutes a fundamental change under our Indentures, then noteholders will have the right to require us to repurchase their Notes for cash. In addition, if a takeover constitutes a make-whole fundamental change under our Indentures, then we may be required to temporarily increase the conversion rate. In either case, and in other cases, our obligations under the Notes and the Indentures could increase the cost of acquiring us or otherwise discourage a third party from acquiring us or removing incumbent management, including in a transaction that noteholders or holders of our common stock may view as favorable.
Rearranged current paragraphs (4)

Current report — wording carried from elsewhere

The most common treatment emergent AEs seen in clinical trials of MRM-3379 in fragile X syndrome include nausea and vomiting, all mild to moderate in severity.

Current report — wording carried from elsewhere

Act allows us, with proper basis, to bring an action for patent infringement against the ANDA filer, asking that the proposed generic product not be approved until after our patents expire. If we commence a lawsuit within 45 days from receipt of the paragraph IV notice, the FDA cannot finally approve the generic’s ANDA until the earlier of 30 months (known as the “30-month stay”), the expiration of the patent, settlement of the lawsuit, or a decision in the litigation resolving it in favor of the ANDA applicant. The discovery, trial and appeals process in such a lawsuit is costly, time consuming, and may result in generic competition if the ANDA applicant prevails.

Current report — wording carried from elsewhere

In addition, the incurrence of indebtedness would result in increased fixed payment obligations and could involve certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to acquire or license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. If we raise additional funds through strategic partnerships and alliances and licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies or product candidates, or grant licenses on terms unfavorable to us.

Current report — wording carried from elsewhere

Securities Act. Any sales of securities by these stockholders could have a material adverse effect on the trading price of our common stock.
Rearranged previous paragraphs (1)

Previous report — wording carried elsewhere

The current administration is pursuing policies to reduce regulations and expenditures across government agencies including at HHS, the FDA, CMS and related agencies. These actions, presently directed by executive orders or memoranda from the Office of Management and Budget, may propose policy changes that create additional uncertainty for our business. For example, the current administration has announced agreements with pharmaceutical companies that require the drug manufacturers to offer, through a direct to consumer platform (sometimes referred to as “TrumpRx”), U.S. patients and Medicaid programs prescription drug Most-Favored Nation pricing equal to or lower than those paid in other developed nations, with additional mandates for direct-to-patient discounts and repatriation of foreign revenues. Other recent actions, for example, include (1) directing agencies to reduce agency workforce and cut programs; (2) directing HHS and other agencies to lower prescription drug costs through a variety of initiatives, including by improving upon the