Mirum Pharmaceuticals, Inc.

Previous wording

We are a biopharmaceutical company dedicated to transforming the treatment of rare diseases. We have three approved medicines: LIVMARLI® (maralixibat) oral solution (“Livmarli”), CHOLBAM® (cholic acid) capsules (“Cholbam”), and CHENODAL® or CTEXLI® (chenodiol) tablets (“Chenodal” or “Ctexli”).

Current wording

We are a biopharmaceutical company dedicated to transforming the treatment of rare diseases. We have three approved medicines: LIVMARLI® (maralixibat) (“Livmarli”), CHOLBAM® (cholic acid) capsules (“Cholbam”), and CTEXLI® (chenodiol) tablets (“Ctexli”).

Previous wording

Livmarli is a novel, orally administered, minimally-absorbed ileal bile acid transporter (“IBAT”) inhibitor (“IBATi”) that is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome (“ALGS”) in the United States (“U.S.”) and various other countries around the world and for cholestatic pruritus in patients with progressive familial intrahepatic cholestasis (“PFIC”) in the U.S. and for the treatment of PFIC in the European Union (“EU”). We market and commercialize Livmarli in the U.S., Canada and certain countries in Europe through our specialized and focused commercial team. We have also entered into license and distribution agreements with several rare disease companies for the commercialization of Livmarli in additional countries.

Current wording

Livmarli is a novel, orally administered, minimally-absorbed ileal bile acid transporter (“IBAT”) inhibitor (“IBATi”) that is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome (“ALGS”) in the United States (“U.S.”), the European Union (“EU”) and various other countries around the world and for cholestatic pruritus in patients with progressive familial intrahepatic cholestasis (“PFIC”) in the U.S., Canada and Japan and for the treatment of PFIC in the EU. We market and commercialize Livmarli in the U.S., Canada and certain countries in Europe through our specialized and focused commercial team. We have also entered into license and distribution agreements with several rare disease companies for the commercialization of Livmarli in additional countries. In March 2025, our partner Takeda received approval from the Japanese Ministry of Health, Labour, and Welfare for Livmarli for the treatment of cholestatic pruritus in patients with ALGS and PFIC.

Previous wording

On August 31, 2023, we completed the acquisition of assets of Travere Therapeutics, Inc. (“Travere”) that are primarily related to the development, manufacture (including synthesis, formulation, finishing or packaging) and commercialization of chenodiol and Cholbam (also known as Kolbam) (and together with chenodiol, the “Bile Acid Medicines”) pursuant to an asset purchase agreement dated July 16, 2023 (such acquisition, the “Bile Acid Portfolio Acquisition”).

Current wording

In August 2023, we completed the acquisition of assets of Travere Therapeutics, Inc. (“Travere”) that are primarily related to the development, manufacture (including synthesis, formulation, finishing or packaging) and commercialization of chenodiol and Cholbam (also known as Kolbam) (and together with chenodiol, the “Bile Acid Medicines”) pursuant to an asset purchase agreement dated July 16, 2023 (such acquisition, the “Bile Acid Portfolio Acquisition”).

Previous wording

The FDA approved Cholbam in March 2015, as the first FDA-approved treatment for pediatric and adult patients with bile acid synthesis disorders due to single enzyme defects, and for adjunctive treatment of patients with peroxisomal disorders, including peroxisome biogenesis disorder-Zellweger spectrum disorder (“PBD-ZSD”). Chenodiol is standard of care for the treatment of cerebrotendinous xanthomatosis (“CTX”) in the United Sates with a medical necessity recognition by the FDA. Chenodiol is currently commercialized under the brand name Chenodal. We submitted an NDA for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which will be commercialized under the brand name Ctexli. We currently commercialize Chenodal and Cholbam, and plan to commercialize Ctexli, in the U.S. through our specialized and focused commercial team. We have also assumed license and distribution agreements with several rare disease companies for the commercialization of Cholbam and chenodiol in additional countries.

Current wording

The U.S. Food and Drug Administration (“FDA”) approved Cholbam in March 2015, as the first FDA-approved treatment for pediatric and adult patients with bile acid synthesis disorders due to single enzyme defects, and for adjunctive treatment of patients with peroxisomal disorders, including peroxisome biogenesis disorder-Zellweger spectrum disorder (“PBD-ZSD”). Chenodiol is standard of care for the treatment of cerebrotendinous xanthomatosis (“CTX”) in the U.S. with a medical necessity recognition by the FDA and was commercialized under the brand name Chenodal. We submitted a new drug application (“NDA”) for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which is commercialized under the brand name Ctexli. We currently market and commercialize Cholbam and Ctexli in the U.S. through our specialized and focused commercial team. We have also assumed license and distribution agreements with several rare disease companies for the commercialization of Cholbam and chenodiol in additional countries.

Previous wording

We are developing Livmarli for certain rare cholestatic conditions through the Phase 3 EXPAND study, which we initiated in the fourth quarter of 2024. In addition, we are advancing our product candidate, volixibat, a novel, oral, minimally-absorbed agent designed to inhibit IBAT, for the treatment of adult patients with cholestatic liver diseases. We are developing volixibat in the setting of primary sclerosing cholangitis (“PSC”) and primary biliary cholangitis (“PBC”), and in October 2024, we announced that the FDA granted Breakthrough Therapy Designation for volixibat as a potential treatment for cholestatic pruritus in patients with PBC. We conducted an interim analysis of our VISTAS Phase 2b clinical trial in PSC and reported interim data from our VANTAGE Phase 2b clinical trial in PBC in June 2024. We expect the VISTAS Phase 2b clinical trial in PSC to complete enrollment in the second half of 2025, and we expect the VANTAGE Phase 2b clinical trial in PBC to complete enrollment in 2026.

Current wording

We are advancing our product candidate, volixibat, a novel, oral, minimally-absorbed agent designed to inhibit IBAT, for the treatment of adult patients with cholestatic liver diseases. We are developing volixibat in the setting of primary sclerosing cholangitis (“PSC”) and primary biliary cholangitis (“PBC”), and in October 2024, we announced that the FDA granted Breakthrough Therapy designation for volixibat as a potential treatment for cholestatic pruritus in patients with PBC. We conducted an interim analysis of our VISTAS Phase 2b clinical trial in PSC and reported interim data from our VANTAGE Phase 2b clinical trial in PBC in June 2024. The VISTAS Phase 2b clinical trial in PSC completed enrollment in the third quarter of 2025 and topline data is expected in the second quarter of 2026. In addition, we expect to submit an NDA to the FDA for volixibat for the treatment of PSC in the second half of 2026, with both potential approval and subsequent launch of volixibat for the treatment of PSC, if approved, to occur in the first half of 2027. We expect the VANTAGE Phase 2b clinical trial in PBC to complete enrollment in the second half of 2026 with topline data expected in the first half of 2027.

Previous wording

On October 22, 2024, we completed a license agreement with Enthorin Therapeutics, LLC and Dart Neuroscience LLC granting us the worldwide right to develop and commercialize MRM-3379, an allosteric inhibitor of Phosphodiasterase 4d (“PDE4D”). We intend to develop MRM-3379 for the treatment of Fragile-X Syndrome (“FXS”) and expect to initiate a Phase 2 clinical trial in 2025.

Current wording

In October 2024, we completed a license agreement with Enthorin Therapeutics, LLC and Dart Neuroscience LLC granting us the worldwide right to develop and commercialize MRM-3379, an allosteric inhibitor of Phosphodiesterase 4D (“PDE4D”). We are currently enrolling patients in the BLOOM Phase 2 clinical study of MRM-3379 in Fragile-X Syndrome (“FXS”) and expect topline data in 2027.

Previous wording

Our net loss was $87.9 million and $163.4 million for the years ended December 31, 2024 and 2023, respectively. Our net loss for the year ended December 31, 2023 includes a $49.1 million loss related to the extinguishment of the liabilities related to the RIPA. As of December 31, 2024, we had an accumulated deficit of $644.2 million compared to $556.2 million as of December 31, 2023. As of December 31, 2024, we had cash, cash equivalents, restricted cash and investments of $293.3 million, compared to cash and cash equivalents of $286.3 million as of December 31, 2023.

Current wording

Our net loss was $23.4 million and $87.9 million for the years ended December 31, 2025 and 2024, respectively. As of December 31, 2025, we had an accumulated deficit of $667.5 million compared to $644.2 million as of December 31, 2024. As of December 31, 2025, we had unrestricted cash, cash equivalents and investments of $391.4 million, compared to $292.8 million as of December 31, 2024.

Previous wording

We anticipate we will continue to generate net losses for the foreseeable future as we continue commercial activities for our approved medicines, conduct our ongoing and planned clinical trials, seek regulatory approvals for our product candidates and make potential milestone payments to the licensors and other third parties from whom we have in-licensed or acquired our product candidates. We expect that total product sales of our approved medicines will continue to increase on an annual basis. We have entered into license and collaboration arrangements with other companies whereby we are entitled to receive upfront and license fees, development and sales-based milestones, and tiered royalties based on sales of commercialized products. In select countries, we have entered into distribution agreements for the sale of our approved medicines and such distributors may have fluctuating purchase levels. As a result, our net losses may fluctuate significantly from quarter-to-quarter and year-to-year.

Current wording

While we generated net income in the third quarter of 2025, we anticipate we will continue to generate net losses for the foreseeable future as we continue commercial activities for our approved medicines, conduct our ongoing and planned clinical trials, including the clinical trials for brelovitug, seek regulatory approvals for our product candidates and make potential milestone payments to the licensors and other third parties from whom we have in-licensed or acquired our product candidates. We expect that total product sales of our approved medicines will continue to increase on an annual basis; however, due to large periodic orders from Takeda and our distributors, our product revenue may experience quarterly fluctuations. Additionally, our product revenues from Takeda are based upon variable consideration estimates. If actual results vary from our estimates, we will make adjustments in the period when such variances become known. As a result, our net losses may fluctuate significantly from quarter-to-quarter and year-to-year.

Previous wording

On October 22, 2024, we completed the in-license of MRM-3379. We paid a one-time non-refundable license fee of $7.5 million upon closing of the transaction, and up to an additional $217.5 million is payable upon achievement of certain development, regulatory and commercial milestones.

Current wording

In October 2024, we completed the in-license of MRM-3379. We paid a one-time non-refundable license fee of $7.5 million upon closing of the transaction, and up to an additional $217.5 million is payable upon achievement of certain development, regulatory and commercial milestones.

Previous wording

On August 31, 2023, we completed the Bile Acid Portfolio Acquisition. We paid $210.4 million upon closing of the transaction, and up to an additional $235.0 million is payable upon the achievement of certain milestones based on specified amounts of annual net sales of the Bile Acid Medicines.

Current wording

In August 2023, we completed the Bile Acid Portfolio Acquisition. We paid $210.4 million upon closing of the transaction, and up to an additional $235.0 million is payable upon the achievement of certain milestones based on specified amounts of annual net sales of the Bile Acid Medicines. As of December 31, 2025, the Company accrued $25.0 million for the achievement of a commercial milestone associated with achievement of certain net product sales, which was recognized as an intangible asset in the accompanying consolidated balance sheet as of December 31, 2025 and is expected to be paid in the first quarter of 2026.

Previous wording

We have three approved medicines: Livmarli, Cholbam and Chenodal or Ctexli. We expect total product sales of our approved medicines will continue to increase on an annual basis.

Current wording

We have three approved medicines: Livmarli, Cholbam and Ctexli. We expect total product sales of our approved medicines will continue to increase on an annual basis.

Previous wording

Our U.S. revenue from product sales, net further depends on our prescription mix of commercial payors, Medicaid and amounts of free medicines provided under our patient assistance program. We expect our prescription mix and resulting gross to net adjustment in the U.S. to remain consistent. Our rest of world revenue from product sales, net primarily depends on our contractual obligations with our distributors and results of pricing negotiations with governmental authorities in certain European countries where we launch Livmarli and expect to launch our other product candidates, if approved. In addition, in certain countries we receive large periodic orders. The timing of these orders can be inconsistent and can create quarter-to-quarter variation in revenue.

Current wording

Our U.S. revenue from product sales, net further depends on our prescription mix of commercial payors, Medicaid and amounts of free medicines provided under our patient assistance program. We expect our prescription mix and resulting gross to net adjustment in the U.S. to remain materially consistent. Our revenue from product sales is recognized when the control of the product is transferred. Under our license agreement with Takeda as well as agreements with distributors, we may receive large periodic orders for our products. The timing of these orders can be inconsistent and can create significant quarter-to-quarter variation in product sales. In addition, we recognize our best estimate of the consideration that we expect to receive when control of the inventory is transferred to our licensed partners and distributors. Such estimates may be complex and include estimates as to if and when our distributors and licensed partner’s sales in the market will occur. Estimates are reviewed and updated quarterly as additional information, including in-market pricing and sales information of our authorized distributors and licensed partners, becomes known which may cause variability of quarterly revenue particularly during periods of product launch.

Previous wording

Although we expect product revenues to increase as we continue commercial activities for our approved medicines, we may not achieve commercial success. Certain of our approved medicines, including the Bile Acid Medicines, are subject to immediate competition from compounded and generic entrants, as the abbreviated new drug application (“ANDA”) and NDA for these drug products have no remaining or current patent or non-patent exclusivity. In addition, Chenodal is standard of care for the treatment of CTX in the U.S. with a medical necessity recognition by the FDA. We submitted an NDA for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which will be commercialized under the brand name Ctexli. The FDA has also granted orphan exclusivity for chenodiol for that indication.

Current wording

Although we expect product revenues to increase as we continue commercial activities for our approved medicines, we may not achieve commercial success. Certain of our approved medicines, including the Bile Acid Medicines, are subject to immediate competition from compounded and generic entrants, as the abbreviated new drug application (“ANDA”) and NDA for these drug products have no remaining or current patent exclusivity. Chenodiol is standard of care for the treatment of CTX in the U.S. and was commercialized with a medical necessity recognition by the FDA until February 2025. We submitted an NDA for chenodiol for the treatment of CTX in 2024 and received FDA approval for the treatment of adults with CTX in February 2025, which is now commercialized under the brand name Ctexli. The FDA has granted orphan exclusivity for chenodiol for the treatment of CTX.

Previous wording

Cost of sales consist of raw materials, third-party manufacturing costs, personnel, facility and other costs of manufacturing commercial products, transportation and freight, amortization of finite-lived intangible assets and royalty payments payable on net sales of our approved medicines under licensing agreements. Cost of sales may also include period costs related to certain manufacturing services and charges for inventory valuation reserves. In addition, we have firm commitments for the purchase of minimum order quantities for active pharmaceutical ingredients. We periodically evaluate these firm commitments to determine if these commitments are in excess of our needs. If any net loss is determined, we record a charge to cost of sales in the period identified. As of the date of our acquisition of the Bile Acid Medicines from Travere, inventory acquired was valued at its fair value. As a result, our cost of sales exceeds the historical cost to manufacture the inventory and has a negative impact on our gross margin. As of the balance sheet date we have sold the majority of acquired inventory that is recorded at fair value.

Current wording

Cost of sales consist of raw materials, third-party manufacturing costs, personnel, facility and other costs of manufacturing commercial products, transportation and freight, amortization of finite-lived intangible assets and royalty payments payable on net sales of our approved medicines under licensing agreements. Cost of sales may also include period costs related to certain manufacturing services and charges for inventory valuation reserves. In addition, we have firm commitments for the purchase of minimum order quantities for active pharmaceutical ingredients. We periodically evaluate these firm commitments to determine if these commitments are in excess of our needs. If any net loss is determined, we record a charge to cost of sales in the period identified. As of the date of our acquisition of the Bile Acid Medicines from Travere, inventory acquired was valued at its fair value. As a result, our cost of sales exceeded cost to manufacture the inventory and had a negative impact on our gross margin.

Previous wording

We expect cost of sales to increase in the future mainly due to variable costs associated with increased product sales such as royalties payable and inventory costs. We expect cost of sales to remain approximately unchanged as a percent of product sales in the future.

Current wording

For our current approved products, we expect cost of sales to increase in the future mainly due to variable costs associated with increased product sales such as royalties payable and inventory costs, partially offset by lower unit cost of sales for the Bile Acid Medicines, as we sold the acquired inventory valued at fair value in prior periods with substantially all fair value inventory sold as of December 31, 2024. We expect cost of sales to remain approximately unchanged as a percent of product sales in the future.

Previous wording

We expect our research and development expense may increase in the future as we continue to develop our volixibat product candidates, execute the EXPAND label expansion study for Livmarli and initiate development of MRX-3379.

Current wording

We expect our research and development expense may increase in the future as we continue to develop our volixibat and MRM-3379 product candidates, execute the EXPAND label expansion study for Livmarli and assume the development of brelovitug.

Previous wording

We anticipate that our selling, general and administrative expenses will increase in the future to support our continued commercialization efforts of our approved medicines in the U.S. and internationally as well as increased costs of operating as a global commercial stage biopharmaceutical public company. These increases will likely include increased costs related to hiring of additional personnel and fees to outside consultants to support further marketing, legal, tax, planning and accounting activities.

Current wording

We anticipate that our selling, general and administrative expenses will increase in the future to support our continued commercialization efforts of our current approved medicines in the U.S. and internationally as well as increased costs of operating as a global commercial stage biopharmaceutical public company. Additionally, if we receive approval for any of our future product candidates, we will incur increased selling, general and administrative expenses to support those commercialization activities. These increases will likely include increased costs related to hiring of additional personnel and fees to outside consultants to support further marketing, legal, tax, planning and accounting activities.

Previous wording

We incur interest expense on our convertible notes and incurred interest expense on the RIPA. Interest on our convertible notes consists of a 4% per annum fixed rate of interest and amortization of debt discount and amortization costs. Interest on the RIPA consisted primarily of costs associated with our liability and non-cash interest costs associated with the amortization of the related debt discount and deferred issuance costs. Prior to extinguishment of the RIPA in the second quarter of 2023, we imputed interest expense associated with this liability using the effective interest rate method which is calculated based on the rate that would enable the debt to be repaid in full over the anticipated life of the arrangement.

Current wording

We incur interest expense on our convertible notes. Interest on our convertible notes consists of a 4% per annum fixed rate of interest and amortization of debt discount and amortization costs.

Previous wording

Revenues from direct product sales are recorded net of reserves established for applicable discounts and allowances that are offered within contracts with our customers, including amounts from payors and other third parties on behalf of our customers. For revenues from partner markets, we record net product sales based on the estimated variable consideration to be received when the product is sold. The transaction price, which may include fixed or variable consideration reflecting the impact of discounts and allowances, may be subject to constraint and is included in the product sales price only to the extent that it is probable that a significant reversal of the amount of the cumulative revenue recognized will not occur in a future period. We recognize our best estimate of the consideration that we expect to receive when control of the inventory is transferred to our customer and revenue is recognized. Estimates are reviewed and updated quarterly as additional information becomes known. Actual amounts may ultimately differ from our estimates. If actual results vary, we adjust these estimates, which could have an effect on earnings in the period of adjustment.

Current wording

Revenues from direct product sales are recorded net of reserves established for applicable discounts and allowances that are offered within contracts with our customers, including amounts from payors and other third parties on behalf of our customers. For revenues from distributors and our licensed partner, Takeda, we record net product sales using the estimated variable consideration to be received. The transaction price, which may include fixed or variable consideration, may be subject to constraint and is included in the product sales price only to the extent that it is probable that a significant reversal of the amount of the cumulative revenue recognized will not occur in a future period. We recognize our best estimate of the consideration that we expect to receive when control of the inventory is transferred to our customer and revenue is recognized. For our distributor and licensed partner sales, such estimates may be more complex and include estimates as to if and when our distributors and licensed partner’s sales in the market will occur. These estimates are reviewed and updated as additional information, including in-market sales information of our authorized distributors and licensed partners, becomes known. Actual amounts may ultimately differ from our estimates. If actual results vary, we adjust these estimates, which could have an effect on earnings in the period of adjustment.

Previous wording

We are obligated to pay rebates for mandated discounts under the Medicaid Drug Rebate Program and other foreign government programs. Our rebate calculations may require estimates based upon our actual historical experience, customer mix and payer mix current contractual and statutory obligations and revenue projections. We update estimates and assumptions on a quarterly basis and record any necessary adjustments to revenue in the period identified. Estimated rebates are recorded as a reduction of revenue in the period the related sale is recognized. To date, actual government rebates have not differed materially from our estimates.

Current wording

We are obligated to pay rebates for mandated discounts under the Medicaid Drug Rebate Program and other foreign government programs. Our rebate calculations may require estimates based upon our actual historical experience, customer and payor mix and revenue projections. We update estimates and assumptions on a quarterly basis and record any necessary adjustments to revenue in the period identified. Estimated rebates are recorded as a reduction of revenue in the period the related sale is recognized. To date, actual government rebates have not differed materially from our estimates.

Previous wording

Cost of product sales consist of raw materials, manufacturing costs, transportation and freight, amortization of capitalized intangible assets, royalties and indirect overhead costs associated with the manufacturing and distribution of the Company’s approved products. Cost of product sales may also include period costs related to certain manufacturing services and inventory adjustment charges.

Current wording

Cost of sales consist of raw materials, manufacturing costs, transportation and freight, amortization of capitalized intangible assets, royalties and direct and indirect overhead costs associated with the manufacturing and distribution of our approved products. Cost of sales may also include period costs related to certain manufacturing services and inventory adjustment charges.

Previous wording

Product sales, net was $336.4 million for the year ended December 31, 2024, compared to $178.9 million for the year ended December 31, 2023. The increase in product sales, net was a result of sales of the Bile Acid Medicines following the completion of the Bile Acid Portfolio Acquisition in August 2023 and our continued commercialization of Livmarli in the U.S. for the treatment of ALGS and PFIC, and in certain international markets directly or through partner market supply orders for the treatment of ALGS.

Current wording

Product sales, net was $521.3 million for the year ended December 31, 2025, compared to $336.4 million for the year ended December 31, 2024. The increase in product sales, net was a result of our continued commercialization of Livmarli in the U.S. for the treatment of ALGS and PFIC, and in certain international markets directly or through distributor and licensed partner orders and from our sales of the Bile Acid Medicines.

Previous wording

Cost of sales was $81.6 million for the year ended December 31, 2024, compared to $47.0 million for the year ended December 31, 2023. The increase in cost of sales was primarily a result of increases in royalty expense of $15.6 million on net sales of Livmarli and the Bile Acid Medicines under licensing agreements, amortization expense of $12.4 million primarily due to acquired intangibles associated with our acquisition of the Bile Acid Medicines in August 2023, product cost of sales of $6.9 million related to the Bile Acid Medicines and, to a lesser extent, Livmarli and other period costs of $6.3 million associated with commercial supply chain expenses and other general expenses. These increases were partially offset by lower excess and obsolescence expenses of $6.6 million primarily due to a charge in the prior year related to excess inventory from certain firm minimum purchase commitments in connection with our acquired Bile Acid Medicines.

Current wording

Cost of sales was $100.2 million for the year ended December 31, 2025, compared to $81.6 million for the year ended December 31, 2024. The increase in cost of sales was primarily a result of increases in royalty expenses of $17.9 million on net sales of Livmarli and the Bile Acid Medicines under licensing agreements, a $2.7 million increase primarily associated with increased PDUFA fees associated with the approval of our solid dose formulation in Livmarli and higher commercial supply chain costs of $3.5 million. These increases were partially offset by lower product cost of sales of $6.6 million primarily related to the Bile Acid Medicines, as we substantially completed the sale of acquired inventory in prior periods which had been recorded at fair value.

Previous wording

Research and development expenses were $140.6 million for the year ended December 31, 2024, an increase of $38.0 million compared to the year ended December 31, 2023. The net increase was primarily due to:

Current wording

Research and development expenses were $186.2 million for the year ended December 31, 2025, an increase of $45.5 million compared to the year ended December 31, 2024. The net increase was primarily due to:

Previous wording

•for volixibat programs, an increase of $13.0 million, primarily due to increased expenses associated with conduct of the PSC and PBC trials;

Current wording

•for volixibat programs, an increase of $19.8 million, primarily due to increased expenses associated with conduct of the PSC and PBC trials as well as manufacturing development expenses;

Previous wording

•for MRM-3379, an increase of $7.5 million due to the upfront payment associated with the in-licensing of MRM-3379;

Current wording

•for MRM-3379, an increase of $4.6 million, primarily due to our Phase 2 study in FXS and clinical manufacturing expenses partially offset by the prior year $7.5 million upfront payment associated with the in-licensing of MRM-3379;

Previous wording

•for personnel related expenses, an increase of $9.6 million related to increased employee headcount to support our development pipeline;

Current wording

•for personnel related and stock-based compensation expenses, an increase of $25.1 million, primarily driven by increased employee headcount and related equity award grants to support our development pipeline; and

Previous wording

•for Livmarli programs, a decrease of $3.8 million, primarily due to lower clinical expenses associated with completion of the MARCH Phase 3 clinical trial of Livmarli in patients with PFIC and related rollover study as well as lower costs due to discontinuation of the biliary atresia clinical trial, partially offset by increased expenses associated with the Livmarli Phase 3 EXPAND label expansion study.

Current wording

•for Livmarli, a decrease of $11.2 million, primarily due to completion of clinical trials including the biliary atresia, PFIC rollover study and a safety study, and lower general clinical support costs partially offset by increased expenses associated with the Livmarli Phase 3 EXPAND label expansion study.

Previous wording

Selling, general and administrative expenses were $202.2 million for the year ended December 31, 2024, an increase of $56.3 million compared to the year ended December 31, 2023. The increase was primarily due to increases of $27.9 million in personnel and other compensation related expenses, including an increase of $8.2 million in stock-based compensation expense, reflecting an increase in the number of our selling, marketing and administrative employees to support commercial activities for our approved medicines, $13.3 million in marketing, advertising, promotion and medical affairs expenses associated with commercial activities for our approved medicines, $8.1 million in expenses primarily related to accounting, legal, compliance, public relations and international expansion activities and $7.0 million in other general administrative expenses.

Current wording

Selling, general and administrative expenses were $257.0 million for the year ended December 31, 2025, an increase of $54.8 million compared to the year ended December 31, 2024. The increase was primarily due to increases of $34.1 million in personnel and other compensation related expenses, including an increase of $13.8 million in stock-based compensation, reflecting an increase in the number of our selling, marketing and administrative employees to support commercial activities for our approved medicines, $6.6 million in advertising, promotion and medical affairs expenses associated with commercial activities, $5.5 million associated with legal, accounting and other outside services, $5.1 million in other general administrative expenses and $3.5 million of expenses associated with post marketing studies.

Previous wording

Since inception, we have funded our operations primarily through debt, equity, revenue interest financings and, to a lesser extent, cash from our product sales and license and collaboration revenue. We had $292.8 million of unrestricted cash, cash equivalents and investments as of December 31, 2024, compared to cash and cash equivalents of $286.3 million as of December 31, 2023. Since inception, we have incurred operating losses. As of December 31, 2024, we had an accumulated deficit of $644.2 million, compared to $556.2 million as of December 31, 2023.

Current wording

Since inception, we have funded our operations primarily through debt, equity, revenue interest financings and cash from our product sales and license and collaboration revenue. We had $391.4 million of unrestricted cash, cash equivalents and investments as of December 31, 2025, compared to unrestricted cash, cash equivalents and investments of $292.8 million as of December 31, 2024. We have incurred significant operating losses since our inception. As of December 31, 2025, we had an accumulated deficit of $667.5 million, compared to $644.2 million as of December 31, 2024.

Previous wording

In September 2022, we filed an automatic shelf registration statement on Form S-3 with the SEC (the “2022 Shelf Registration”), which became effective upon filing, pursuant to which we registered for sale from time to time in one or more offerings an unlimited amount of any combination of our common stock, preferred stock, debt securities and warrants, so long as we continue to satisfy the requirements of a “well-known seasoned issuer” under SEC rules. This automatic shelf registration statement will remain in effect for up to three years from the date it became effective. As of December 31, 2024, we have not issued any securities pursuant to the 2022 Shelf Registration.

Current wording

In August 2025, we filed an automatic shelf registration statement on Form S-3 with the SEC (the “2025 Shelf Registration”), which became effective upon filing, pursuant to which we may register for sale from time to time in one or more offerings an unlimited amount of any combination of our common stock, preferred stock, debt securities and warrants, so long as we continue to satisfy the requirements of a “well-known seasoned issuer” under SEC rules. This automatic shelf registration statement will remain in effect for up to three years from the date it became effective. As of December 31, 2025, we have not issued any securities pursuant to the 2025 Shelf Registration.

Previous wording

On November 2, 2023, we entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink and Cantor Fitzgerald & Co. (the “Sales Agents”), pursuant to which we may, from time to time, sell up to an aggregate amount of $200.0 million of our common stock through the Sales Agents in an “at-the-market” offering (the “ATM Offering”) pursuant to the 2022 Shelf Registration. We are not required to sell shares under the 2023 Sales Agreement. Sales of our common stock, if any, under the 2023 Sales Agreement may be made in any transactions that are deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act. We will pay a given designated Sales Agent a commission of up to 3.0% of the aggregate gross proceeds of any shares of common stock sold through it pursuant to the 2023 Sales Agreement. As of December 31, 2024, we have not issued any securities pursuant to the 2023 Sales Agreement.

Current wording

In November 2023, we entered into a Sales Agreement (the “2023 Sales Agreement”) with Leerink and Cantor Fitzgerald & Co. (the “Sales Agents”), pursuant to which we may, from time to time, sell up to an aggregate amount of $200.0 million of our common stock through the Sales Agents in an “at-the-market” offering (the “ATM Offering”). We are not required to sell shares under the 2023 Sales Agreement. Sales of our common stock, if any, under the 2023 Sales Agreement may be made in any transactions that are deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act. We will pay a given designated Sales Agent a commission of up to 3.0% of the aggregate gross proceeds of any shares of common stock sold through it pursuant to the 2023 Sales Agreement. As of December 31, 2025, we have not issued any securities pursuant to the 2023 Sales Agreement.

Previous wording

On August 31, 2023, we completed the Bile Acid Portfolio Acquisition for an aggregate purchase price of up to $445.0 million in cash, with $210.4 million paid at the closing and up to $235.0 million upon achievement of certain milestones based on specified amounts of annual net sales (tiered from $125.0 million to $500.0 million) of the Bile Acid Medicines. In connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed the private placement of 8,000,000 shares of our common stock at a price per share of $26.25, resulting in net proceeds of approximately $202.2 million, which we used to finance the upfront payment at the closing of the Bile Acid Portfolio Acquisition.

Current wording

In August 2023, we completed the Bile Acid Portfolio Acquisition for an aggregate purchase price of up to $445.0 million in cash, with $210.4 million paid at the closing and up to $235.0 million upon achievement of certain milestones based on specified amounts of annual net sales (tiered from $125.0 million to $500.0 million) of the Bile Acid Medicines. In connection with and immediately prior to the closing of the Bile Acid Portfolio Acquisition, we completed the private placement of 8,000,000 shares of our common stock at a price per share of $26.25, resulting in net proceeds of approximately $202.2 million, which we used to finance the upfront payment at the closing of the Bile Acid Portfolio Acquisition.

Previous wording

On April 17, 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The terms of the Notes are further described in Note 10 to our consolidated financial statements. We used a portion of the net proceeds to repurchase the revenue interests from the Purchasers at a call price of $192.7 million. Upon repurchase of the revenue interests from the Purchasers, the RIPA, in accordance with its terms, was terminated with no further payments due to the Purchasers and the $100.0 million of our previously restricted cash equivalents was no longer restricted from use.

Current wording

In April 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The terms of the Notes are further described in Note 10 to our consolidated financial statements. We used a portion of the net proceeds to repurchase the Revenue Interest Purchase Agreement (“RIPA”) at a call price of $192.7 million. Upon repurchase of the revenue interests from the Purchasers, the RIPA, in accordance with its terms, was terminated.

Previous wording

We anticipate that we will continue to incur net losses for the foreseeable future as we continue research efforts and the development of our product candidates, continue commercialization activities for our approved medicines and potentially expand into additional markets, hire additional staff, including clinical, scientific, operational, financial and management personnel and pay potential development milestones. Net loss is also impacted by significant non-cash charges related to stock-based compensation and amortization of intangible assets.

Current wording

While we generated net income in the third quarter of 2025, we anticipate that we will continue to incur net losses for the foreseeable future as we continue research efforts and the development of our product candidates, including development of brelovitug which we acquired in January 2026, continue commercialization activities for our approved medicines and potentially expand into additional markets, hire additional staff, including clinical, scientific, operational, financial and management personnel and pay potential development milestones. Net loss is also impacted by significant non-cash charges related to stock-based compensation and amortization of intangible assets.

Previous wording

Our principal source of liquidity is product revenue from sales of approved medicines, and, to a lesser extent, from our license and collaboration agreements. Until such time, if ever, as we can generate sufficient product revenue from sales of our approved medicines, our current product candidates or any future product candidates, if approved, to fund operations, we expect to finance our cash needs through a combination of equity offerings, debt financings and potential collaboration, license or development agreements. Our primary cash needs are for day-to-day operations and to fund our working capital requirements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect rights as a stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

Current wording

Our principal source of liquidity is product revenue from sales of our approved medicines. For the year ended December 31, 2025, liquidity from product revenues was sufficient to fund current operations. There can be no assurances that future revenues will continue to be sufficient to fund operations. For example, as a result of the Bluejay Acquisition, we expect a significant increase in research and development expenses over the next few years as we continue the clinical development of brelovitug. Should product revenues from our currently approved medicines, our current product candidates or any future product candidates, if approved, be insufficient to fund operations, we would expect to finance our cash needs through a combination of cash on hand, equity offerings, debt financings and potential collaboration, license or development agreements. Our primary cash needs are for day-to-day operations and to fund our working capital requirements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect rights as a stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

Previous wording

In April 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The Notes are our senior, unsecured obligations and accrue interest at a rate of 4.00% per annum, payable semi-annually in arrears on May 1 and November 1 of each year. The

Current wording

In April 2023, we completed an offering of $316.3 million aggregate principal of the Notes, which includes the exercise of the initial purchasers’ option in full. The offering resulted in net proceeds of $305.3 million after deducting the initial purchasers’ discounts and commissions and offering expenses. The Notes are our senior, unsecured obligations and accrue interest at a rate of 4.00% per annum, payable semi-annually in arrears on May 1 and November 1 of each year. The Notes will mature on May 1, 2029, unless earlier converted, redeemed or repurchased by us. The terms of these Notes are further described in Note 10 to our consolidated financial statements.

Previous wording

During the fourth quarter of 2024, the last reported sale price of our common stock exceeded 130% of the conversion price of the Notes for more than 20 trading days during the 30 consecutive trading days ended December 31, 2024. As a result, the Notes are convertible at the option of the holders of the Notes during the first quarter of 2025, the quarter immediately following the quarter when the conditions were met, as stated in the terms of the Notes. If holders of the Notes elect to convert their Notes, we may elect to settle such conversions by paying or delivering, as applicable, cash, shares of our common stock or a combination of cash and shares of our common stock.

Current wording

During the fourth quarter of 2025, the last reported sale price of our common stock exceeded 130% of the conversion price of the Notes for more than 20 trading days during the 30 consecutive trading days ended December 31, 2025. As a result, the Notes are convertible at the option of the holders of the Notes during the first quarter of 2026, the quarter immediately following the quarter when the conditions were met, as stated in the terms of the Notes. If holders of the Notes elect to convert their Notes, we may elect to settle such conversions by paying or delivering, as applicable, cash, shares of our common stock or a combination of cash and shares of our common stock. During the year ended December 31, 2025, holders of the Notes converted an immaterial amount of principal balance.

Previous wording

Under the Shire License Agreement and the Asset Purchase Agreement with Travere, as well as our other license and acquisition agreements, we have payment obligations that are contingent upon future events such as our achievement of specified development, regulatory and commercial milestones and are required to make royalty payments in connection with the sale of products developed under those agreements. The amount and timing of milestone obligations are unknown or uncertain as we are unable to estimate the timing or likelihood of achieving the milestone events. Additionally, the amount of royalty payments are based upon future product sales, which we are unable to predict with certainty. These potential obligations are further described in Note 7 to our consolidated financial statements.

Current wording

Under the Shire License Agreement, the Asset Purchase Agreement with Travere, license agreement with Enthorin Therapeutics, LLC (“Enthorin”), Bluejay’s license agreement with Novartis Pharma AG, which we acquired as part of the Bluejay Acquisition in January 2026 (see below), as well as our other license and acquisition agreements, we have payment obligations that are contingent upon future events such as our achievement of specified development, regulatory and commercial milestones and are required to make royalty payments in connection with the sale of products developed under those agreements. The amount and timing of milestone obligations are unknown or uncertain as we are unable to estimate the timing or likelihood of achieving the milestone events. Additionally, the amount of royalty payments are based upon future product sales, which we are unable to predict with certainty. These potential obligations are further described in Note 7 to our consolidated financial statements.

Previous wording

Net Cash Provided by (Used in) Operating Activities

Current wording

Net Cash Provided by Operating Activities