ZEVRA THERAPEUTICS, INC.

Previous wording

Our five-year strategic plan is focused on the continued transformation of Zevra into a leading rare-disease company. In addition to the commercialization of OLPRUVA and the approval and subsequent launch of MIPLYFFA, in the third quarter of 2024 we discontinued our in-house drug discovery activities and closed our laboratory facilities in Iowa and Virginia to prioritize near-term resources for our late-stage clinical development and commercial opportunities. In the future, we plan to outsource our discovery and early development activities and further expand our pipeline through both internal development and through our business development activities to collaborate, partner, and potentially acquire additional assets. We intend to target assets that we believe will allow us to leverage the expertise and infrastructure that we have built to help mitigate risk and enhance our probability of success. If we are successful, expanding our pipeline could be accretive to our value proposition and has the potential to create incremental long-term value for stockholders.

Current wording

Our five-year strategic plan is focused on the continued transformation of Zevra into a leading rare-disease company. In addition to the commercialization of OLPRUVA and the approval and subsequent launch of MIPLYFFA, in the third quarter of 2024 we discontinued our in-house drug discovery activities and closed our laboratory facilities in Iowa and Virginia to prioritize near-term resources for our late-stage clinical development and commercial opportunities. In the future, we plan to outsource our discovery and early development activities and further expand our pipeline through both internal development and our business development activities to collaborate, partner, and potentially acquire additional assets. We intend to target assets that we believe will allow us to leverage the expertise and infrastructure that we have built to help mitigate risk and enhance our probability of success. If we are successful, expanding our pipeline could be accretive to our value proposition and has the potential to create incremental long-term value for stockholders.

Previous wording

During the first quarter of 2025, we withdrew the NDA for APADAZ, our approved product for the treatment of pain based on benzhydrocodone, our prodrug of hydrocodone. While this product has not been commercially available over the last few years, this decision eliminates all regulatory activities needed to maintain the approval, reducing costs for a product where currently there is not an economically viable addressable market. We will continue to optimize and curate our IP portfolio through a variety of avenues to extract value for the benefit of shareholders, as demonstrated through these recent activities. In addition, as part of our ongoing IP portfolio review, we licensed certain IP related to our pre-clinical stage prodrug of dextrorphan in April 2025 to an undisclosed party for an upfront payment of $250,000, potential future regulatory milestones of up to $8.45 million and single-digit royalties on net sales.

Current wording

We continue to optimize and curate our IP portfolio through a variety of avenues to extract value for the benefit of stockholders. As part of our ongoing IP portfolio review, we licensed certain IP related to our pre-clinical stage prodrug of dextrorphan in April 2025 to an undisclosed party for an upfront payment of $250,000, potential future regulatory milestones of up to $8.45 million and single-digit royalties on net sales. This licensing revenue is included in revenue, net on the unaudited condensed consolidated statements of operations for the three and six months ended June 30, 2025.

Previous wording

On September 20, 2024, the FDA approved the New Drug Application (“NDA”) for MIPLYFFA® (arimoclomol), for use in combination with miglustat for the treatment of neurological manifestations of Niemann-Pick disease type C (“NPC”) in adult and pediatric patients 2 years of age and older. MIPLYFFA is an orally-delivered treatment for NPC, which is an ultra-rare and progressive neurodegenerative disease. In connection with this approval, we received a transferable rare pediatric disease priority review voucher (“PRV”). On April 1, 2025, we consummated the sale of the PRV to a buyer, resulting in net proceeds of $148.3 million to the Company. MIPLYFFA has also been granted orphan medical product designation for the treatment of NPC by the European Commission. In November 2024, MIPLYFFA became commercially available for dispense.

Current wording

On September 20, 2024, the FDA approved the New Drug Application (“NDA”) for MIPLYFFA (arimoclomol), for use in combination with miglustat for the treatment of neurological manifestations of Niemann-Pick disease type C (“NPC”) in adult and pediatric patients 2 years of age and older. MIPLYFFA is an orally-delivered treatment for NPC, which is an ultra-rare and progressive neurodegenerative disease. In connection with this approval, we received a transferable rare pediatric disease priority review voucher (“PRV”). On April 1, 2025, we consummated the sale of the PRV to a buyer, resulting in net proceeds of $148.3 million to the Company. MIPLYFFA has also been granted orphan medical product designation for the treatment of NPC by the European Commission. In November 2024, MIPLYFFA became commercially available for dispense in the United States.

Previous wording

NPC is characterized by an inability of the body to transport cholesterol and lipids inside of cells. Symptoms of NPC include a progressive impairment of mobility, cognition, speech, and swallowing, often culminating in premature death. The incidence of NPC is estimated to be one in 100,000 to 130,000 live births. We estimate that there are approximately 1,800 individuals with NPC in the U.S. and Europe combined, of which approximately 900 are in the U.S. and 1,100 are in the EU, where there is a mature market with an approved treatment available for NPC. Of these, approximately 300 to 350 people have been diagnosed in the U.S. However, diagnostic challenges may affect the number of potential patients, and we believe that the availability of treatment options in the U.S. could increase awareness of the disease and assist in more accurately identifying patients.

Current wording

NPC is characterized by an inability of the body to transport cholesterol and lipids inside of cells. Symptoms of NPC include a progressive impairment of mobility, cognition, speech, and swallowing, often culminating in premature death. The incidence of NPC is estimated to be one in 100,000 to 130,000 live births. We estimate that there are approximately 2,000 individuals with NPC in the U.S. and Europe combined, of which approximately 900 are in the U.S. and 1,100 are in the EU, where there is a mature market with an approved treatment available for NPC. Of this estimated population, approximately 300 to 350 people have been diagnosed in the U.S. However, low diagnostic rates may affect the number of potential patients, and we believe that the availability of treatment options in the U.S. could increase awareness of the disease and assist in more accurately identifying patients.

Previous wording

On September 20, 2024, the FDA approved the NDA for MIPLYFFA, an orally-delivered treatment, in combination with miglustat, for NPC, which is an ultra-rare and progressive neurodegenerative disease. MIPLYFFA, the first FDA-approved treatment for NPC, is indicated for use in combination with miglustat for the treatment of neurological manifestations of NPC in adult and pediatric patients two years of age and older. In addition, we received a transferable rare pediatric disease PRV in conjunction with the approval. On April 1, 2025, we completed the previously disclosed sale of the PRV (“Asset Sale”). The Asset Sale was completed pursuant to the terms of an asset purchase agreement, dated February 26, 2025 (the “PRV Transfer Agreement”). Pursuant to the PRV Transfer Agreement, the Company received gross proceeds of $150.0 million from the buyer upon the closing of the Asset Sale.

Current wording

On September 20, 2024, the FDA approved the NDA for MIPLYFFA, an orally-delivered treatment, in combination with miglustat, for NPC, which is an ultra-rare and progressive neurodegenerative disease. MIPLYFFA, the first FDA-approved treatment for NPC, is indicated for use in combination with miglustat for the treatment of neurological manifestations of NPC in adult and pediatric patients two years of age and older. In addition, we received a transferable rare pediatric disease PRV in conjunction with the approval. On April 1, 2025, we completed the previously disclosed sale of the PRV (“Asset Sale”). The Asset Sale was completed pursuant to the terms of an asset purchase agreement, dated February 26, 2025 (the “PRV Transfer Agreement”). Pursuant to the PRV Transfer Agreement, the Company received net proceeds of $148.3 million from the buyer upon the closing of the Asset Sale.

Previous wording

Effective therapies to treat NPC are desperately needed, and, for this reason, MIPLYFFA is currently being made available to NPC patients in France, Germany, and other EU member states under various EAPs. MIPLYFFA has also been granted orphan medical product designation for the treatment of NPC by the European Commission. As of March 31, 2025, there were a total of 122 enrollments toreceive MIPLYFFA, which included conversion of all active participants in our U.S. EAP, which we expect to close by the end of the second quarter of 2025. Our commercial plans will focus on continuing to raise awareness among people who are living with NPC that are diagnosed and untreated, or undiagnosed. For MIPLYFFA, an enrollment is a prescription submitted to our specialty pharmacy, initiating the benefits investigation process to determine reimbursement and can lead to a 30-day paid dispense of MIPLYFFA.

Current wording

As of June 30, 2025, there were a total of 129 enrollments toreceive MIPLYFFA, which included conversion of all active participants in our U.S. EAP, which closed in the second quarter of 2025. Our commercial plans will focus on continuing to raise awareness among people who are living with NPC that are diagnosed and untreated, or undiagnosed. For MIPLYFFA, an enrollment is a prescription submitted to our specialty pharmacy, initiating the benefits investigation process to determine reimbursement and can lead to a 30-day paid dispense of MIPLYFFA. Soon after approval of MIPLYFFA, the FDA approved a second therapy for NPC, AQNEURSA, which is approved for the treatment of neurological manifestations of NPC in adults and pediatric patients weighing ≥15 kg and is marketed by IntraBio, Inc.

Previous wording

Zevra holds global rights to develop and commercialize MIPLYFFA. We intend to seek regulatory approval for MIPLYFFA in the European Union (“EU”), and we are currently evaluating the potential to commercialize outside of the U.S. and/or to seek additional regulatory approvals to support future global commercialization opportunities. Our focus is currently on preparing for submission of a Marketing Authorisation Application, or MAA, in Europe in the second half of 2025.

Current wording

Zevra holds global rights to develop and commercialize MIPLYFFA. We continue to evaluate the potential to obtain regulatory approval for and to commercialize MIPLYFFA outside of the U.S. We are currently focusing on seeking regulatory approval in Europe, and filed a Marketing Authorisation Application, or MAA, in July 2025.

Previous wording

UCDs are a group of rare genetic disorders that can cause harmful ammonia to build up in the blood, potentially resulting in brain damage and neurocognitive impairments, if ammonia levels are not controlled. Any increase in ammonia over time is serious. Therefore, it is important to adhere to any dietary protein restrictions and have alternative medication options to help control ammonia levels. Approximately 1 in 100,000 people have UCD, and there are an estimated 800 patients who are actively treated with nitrogen scavenging therapy in the U.S. While there are therapies currently approved for the treatment of UCDs - specifically RAVICTI, marketed by Amgen, Inc. (formerly Horizon Therapeutics) and PHEBURANE, marketed by Medunik USA - there remain unmet needs for this community of patients. OLPRUVA offers benefits over other UCD treatments by eliminating issues with palatability, offering improved portability with its single-dose envelopes, and it comes in a dosage personalized to the patient based on weight.

Current wording

UCDs are a group of rare genetic disorders that can cause harmful ammonia to build up in the blood, potentially resulting in brain damage and neurocognitive impairments, if ammonia levels are not controlled. Any increase in ammonia over time is serious. Therefore, it is important to adhere to any dietary protein restrictions and have alternative medication options to help control ammonia levels. Approximately 1 in 100,000 people have UCD, and there are an estimated 800 patients who are actively treated with nitrogen scavenging therapy in the U.S. While there are therapies currently approved for the treatment of UCDs - specifically RAVICTI, marketed by Amgen, Inc. (formerly Horizon Therapeutics) and PHEBURANE, marketed by Medunik USA - there remain unmet needs for this community of patients. OLPRUVA offers benefits over other UCD treatments by eliminating issues with palatability, offering improved portability with its single-dose envelopes, and being provided in a dosage personalized to the patient based on weight.

Previous wording

During the quarter ended December 31, 2023, we began generating revenue from the sale of OLPRUVA in the U.S. Zevra has a partnership with Relief Therapeutics, who has rights to commercialize OLPRUVA in various EU countries, if approved. In addition, Zevra was obligated to pay royalties of 10% of U.S. net sales up to a maximum of $45.0 million, plus specified regulatory milestones, for total payments to Relief of up to $56.5 million. On April 10, 2025, the rights to this royalty were sold to Soleus Capital Management L.P.

Current wording

During the quarter ended December 31, 2023, we began generating revenue from the sale of OLPRUVA in the U.S. Zevra has a partnership with Relief Therapeutics, which has rights to commercialize OLPRUVA in various EU countries, if approved.

Previous wording

Based on FDA's feedback during the Type B meeting, we adopted a decentralized (virtual) event-based clinical trial design and use of an independent centralized adjudication committee with a primary endpoint based on clinical events associated with disease outcome. In April 2022, the FDA granted celiprolol Breakthrough Therapy designation in the U.S. for the treatment of patients with COL3A1-positive VEDS.

Current wording

Based on the FDA's feedback during the Type B meeting, we adopted a decentralized (virtual) event-based clinical trial design and use of an independent centralized adjudication committee with a primary endpoint based on clinical events associated with disease outcome. In April 2022, the FDA granted celiprolol Breakthrough Therapy designation in the U.S. for the treatment of patients with COL3A1-positive VEDS.

Previous wording

In July 2022, Acer initiated enrollment in a Phase 3 long-term event-driven clinical trial designed based on the discussions from the May 2021 Type B meeting with the FDA, also known as the DiSCOVER trial. The DiSCOVER trial intends to enroll 150 VEDS patients, with 100 patients receiving celiprolol and 50 patients receiving placebo. Recruitment in the Phase-3 trial was restarted mid-2024 after a brief hiatus and the trial has 32 enrolled participants as of March 31, 2025. We believe that celiprolol could address significant unmet needs as there are currently no approved treatments for VEDS in the U.S.

Current wording

In July 2022, Acer initiated enrollment in a Phase 3 long-term event-driven clinical trial designed based on the discussions from the May 2021 Type B meeting with the FDA, also known as the DiSCOVER trial. The DiSCOVER trial intends to enroll 150 VEDS patients, with 100 patients receiving celiprolol and 50 patients receiving placebo. Recruitment in the Phase-3 trial was restarted mid-2024, and the trial has 39 enrolled participants as of June 30, 2025. We believe that celiprolol could address significant unmet needs, as there are currently no approved treatments for VEDS in the U.S. We have implemented a broad recruitment drive focusing on collaborating with medical clinics where most patients are being managed. This outreach is ongoing with significant interest and participation.

Previous wording

Narcolepsy is a rare, chronic, debilitating neurologic disorder of sleep-wake state instability that impacts up to 200,000 Americans and is primarily characterized by EDS and cataplexy (sudden loss of muscle tone while a person is awake) along with other manifestations of rapid eye movement, sleep dysregulation, which intrude into wakefulness. In most patients, narcolepsy is caused by the loss of hypocretin, a neuropeptide in the brain that supports sleep-wake state stability. Typical symptom onset occurs in adolescence or young adulthood, but it can take up to a decade to be properly diagnosed. Although there are several approved medications for narcolepsy, we believe a treatment option based on serdexmethylphenidate (“SDX”), our proprietary prodrug of d-methylphenidate (“d-MPH”), which has previously been classified as a Schedule IV controlled substance, may be beneficial.

Current wording

Narcolepsy is a rare, chronic, debilitating neurologic disorder of sleep-wake state instability that impacts up to 200,000 Americans and is primarily characterized by EDS and cataplexy (sudden loss of muscle tone while a person is awake) along with other manifestations of rapid eye movement and sleep dysregulation, which intrude into wakefulness. In most patients, narcolepsy is caused by the loss of hypocretin, a neuropeptide in the brain that supports sleep-wake state stability. Typical symptom onset occurs in adolescence or young adulthood, but it can take up to a decade to be properly diagnosed. Although there are several approved medications for narcolepsy, we believe a treatment option based on serdexmethylphenidate (“SDX”), our proprietary prodrug of d-methylphenidate (“d-MPH”), which has previously been classified as a Schedule IV controlled substance, may be beneficial.

Previous wording

KP1077 utilizes SDX, our prodrug of d-MPH, as its active pharmaceutical ingredient (“API”). During the first quarter of 2022, we initiated a Phase 1 clinical trial comparing the cardiovascular safety of SDX to immediate-release and long-acting formulations of RITALIN, a commonly prescribed central nervous system (“CNS”) stimulant. In September 2022, we announced topline data from our exploratory Phase 1 clinical trial, which showed the potential for higher dose formulations of SDX to be safe and well tolerated while avoiding the potential for greater cardiovascular safety risk compared to immediate-release and long-acting formulations of RITALIN.

Current wording

KP1077 utilizes SDX, our prodrug of d-MPH, as its active pharmaceutical ingredient. During the first quarter of 2022, we initiated a Phase 1 clinical trial comparing the cardiovascular safety of SDX to immediate-release and long-acting formulations of RITALIN, a commonly prescribed central nervous system (“CNS”) stimulant. In September 2022, we announced topline data from our exploratory Phase 1 clinical trial, which showed the potential for higher dose formulations of SDX to be safe and well tolerated while avoiding the potential for greater cardiovascular safety risk compared to immediate-release and long-acting formulations of RITALIN.

Previous wording

In May 2021, we announced that SDX, our proprietary prodrug of d-MPH and the primary API in AZSTARYS, was classified as a Schedule IV controlled substance by the DEA. AZSTARYS is classified as a Schedule II controlled substance as its formulation includes a 70:30 mixture of SDX (Schedule IV) and d-MPH (Schedule II), respectively.

Current wording

In May 2021, we announced that SDX, our proprietary prodrug of d-MPH and the primary active pharmaceutical ingredient in AZSTARYS, was classified as a Schedule IV controlled substance by the DEA. AZSTARYS is classified as a Schedule II controlled substance as its formulation includes a 70:30 mixture of SDX (Schedule IV) and d-MPH (Schedule II), respectively.

Previous wording

Prior to our acquisition of the assets of Orphazyme in May 2022, Orphazyme had entered into an asset purchase agreement with LadRx Corporation, which was assigned to XOMA (US) LLC, a wholly-owned subsidiary of XOMA Corporation (“XOMA”), in June 2023 (“XOMA License Agreement”), as well as a license agreement with Kansas University (“KU”) and UCLB Business, PLC (“UCLB”) (the “KU/UCLB License Agreement”). Under the XOMA License Agreement, XOMA is entitled to certain net sales and regulatory milestone payments in addition to a mid-single digit royalty with respect to worldwide net sales of MIPLYFFA. Under the KU/UCLB License Agreement, KU and UCLB, respectively, are entitled to a low-single digit royalty with respect to worldwide net sales of MIPLYFFA.

Current wording

Prior to our acquisition of the assets of Orphazyme in May 2022, Orphazyme had entered into an asset purchase agreement with LadRx Corporation, which was assigned to XOMA (US) LLC, a wholly-owned subsidiary of XOMA Corporation (“XOMA”), in June 2023 (“XOMA License Agreement”). Under the XOMA License Agreement, XOMA is entitled to a mid-single digit percentage royalty with respect to net sales of MIPLYFFA as well as milestone payments based on future potential sales and regulatory milestones, including a $4.0 million regulatory milestone payment upon approval in the E.U.

Previous wording

Pursuant to the Relief License Agreement, Zevra was obligated to pay royalties of 10% of U.S. net sales up to a maximum of $45.0 million, plus specified regulatory milestones, for total payments to Relief of up to $56.5 million. On April 10, 2025, the rights to this royalty were sold to Soleus Capital Management L.P.

Current wording

Pursuant to the Relief License Agreement, Zevra was obligated to pay royalties of 10% of U.S. net sales up to a maximum of$45.0 million, plus specified regulatory milestones, for total payments to Relief of up to$56.5 million. On April 10, 2025, the rights to this royalty were sold to Soleus Capital Management L.P.

Previous wording

Revenue for the three months ended March 31, 2025, was $20.4 million, compared to revenue of $3.4 million for the three months ended March 31, 2024 anincreaseof $17.0 million. The increase was primarily due to an increase in product sales of MIPLYFFA of $17.1 million.

Current wording

Revenue for the three months ended June 30, 2025, was $25.9 million, compared to revenue of $4.4 million for the three months ended June 30, 2024, an increase of approximately $21.4 million. The increase was primarily due to an increase in product sales of MIPLYFFA of $21.5 million.

Previous wording

Cost of product revenue for the three months ended March 31, 2025, increased by approximately $1.2 million compared to the cost of product revenue for the three months ended March 31, 2024, primarily due to royalty costs related to product sales of MIPLYFFA.

Current wording

Cost of product revenue for the three months ended June 30, 2025, increased by $8.8 million compared to the cost of product revenue for the three months ended June 30, 2024. This increase is primarily due to $11.7 million in inventory obsolescence for the three months ended June 30, 2025, compared to $3.2 million for the three months ended June 30, 2024, as well as royalty costs related to product sales of MIPLYFFA.

Previous wording

Intangible asset amortization for the three months ended March 31, 2025, increased by approximately $0.1 million compared to the intangible asset amortization for the three months ended March 31, 2024, due to amortization expense related to definite-lived intangible assets acquired in the Merger.

Current wording

Intangible asset amortization for the three months ended June 30, 2025, increased by $0.1 million comp ared to the intangible asset amortization for the three months ended June 30, 2024, and is composed of amortization expense related to definite-lived intangible assets acquired in the Merger.

Previous wording

Research and development expenses decreased by $9.0 million, from $12.3 million for the three months ended March 31, 2024, to $3.3 million for the three months ended March 31, 2025. This decreasewas primarily driven by a decrease inspending for the ongoing Phase 2 clinical study in KP1077 and adecrease in personnel-related costs.

Current wording

Research and development expenses decreased by $7.1 million, from $10.5 million for the three months ended June 30, 2024, to $3.4 million for the three months ended June 30, 2025. This decrease was primarily driven by a decrease in spending for the Phase 2 clinical study in KP1077 and a decrease in personnel-related costs.

Previous wording

Selling, general and administrative expenses increased by $9.6 million, from $9.9 million for the three months ended March 31, 2024, to$19.5 million for the three months ended March 31, 2025. The period-over-period increase was primarily related to an increase in personnel-related costs, professional fees, and other expenses as we continue to build our commercial organization.

Current wording

Selling, general and administrative expenses increased by $8.2 million, from $12.6 million for the three months ended June 30, 2024, to $20.8 million for the three months ended June 30, 2025. The period-over-period increase was primarily related to an increase in personnel-related costs, professional fees, and other expenses as we continue to build our commercial organization.

Previous wording

Other income for the three months ended March 31, 2025, was $3.4 million compared to other income of$3.8 millionfor the three months ended March 31, 2024. This change was primarily attributable to an increase in interest expense of $1.2 million and a decrease in interest and other income of $0.4 million, partially offset by an increase in the fair value adjustment related to warrant and CVR liability of $1.2 million.

Current wording

Other income for the three months ended June 30, 2025, was $147.9 million compared to other income of $3.9 million for the three months ended June 30, 2024. The increase was primarily attributable to the gain on sale of the PRV of $148.3 million and the decrease in fair value adjustment related to warrant and CVR liability of $6.5 million.

Previous wording

Through March 31, 2025, we have funded our research and development and operating activities primarily through the issuance of debt and equity and from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and consulting agreements. As of March 31, 2025, we had cash, cash equivalents and investments of $68.7 million.

Current wording

Through June 30, 2025, we have funded our research and development and operating activities primarily through the issuance of debt and equity and from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and consulting agreements. As of June 30, 2025, we had cash, cash equivalents and investments of $217.7 million.

Previous wording

We have had recurring negative net operating cash flows throughout our operating history, and we cannot guarantee or predict when we may begin to consistently generate positive net cash flows from operations, or if at all. We expect that our sources of revenue will be from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, consulting agreements, and any other future arrangements related to one or more of our products or product candidates.

Current wording

We have had recurring negative net operating cash flows throughout our operating history, and we cannot guarantee or predict when we may begin to consistently generate positive net cash flows from operations, or if at all. We expect that our sources of revenue will be from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and any other future arrangements related to one or more of our products or product candidates.

Previous wording

On June 4, 2024, we filed a registration statement on Form S-3 (File No. 333-279941) (the “June 2024 Registration Statement”) under which we sell securities, including as may be issuable upon conversion, redemption, repurchase, exchange or exercise of securities, in one or more offerings up to a total aggregate offering price of $350.0 million, $75.0 million of which was allocated to the sale of the shares of common stock issuable under the 2024 ATM Agreement. The registration statement was declared effective on June 13, 2024.

Current wording

On June 4, 2024, we filed a registration statement on Form S-3 (File No. 333-279941) (the “June 2024 Registration Statement”) under which we sell securities, including as may be issuable upon conversion, redemption, repurchase, exchange or exercise of securities, in one or more offerings up to a total aggregate offering price of $350.0 million, $75.0 million of which was allocated to the sale of the shares of common stock issuable under the 2024 ATM Agreement. The June 2024 Registration Statement was declared effective on June 13, 2024.

Previous wording

On August 8, 2024, we entered into an underwriting agreement (the “Underwriting Agreement”) with Cantor Fitzgerald & Co. and William Blair & Company, L.L.C., as representatives of the several underwriters named therein (collectively, the “Underwriters”), in connection with the offering, issuance and sale by us of 9,230,770 shares of our common stock at a public offering price of $6.50 per share, pursuant to the June 2024 Registration Statement and a related prospectus supplement dated August 8, 2024 filed with the SEC (the “August 2024 Offering”). Under the terms of the Underwriting Agreement, we also granted the Underwriters an option exercisable for 30 days to purchase up to an additional 1,384,615 shares of our common stock at the public offering price, less underwriting discounts and commissions, which the Underwriters exercised in full on August 9, 2024. The August 2024 Offering closed on August 12, 2024. Total shares issued were 10,615,385. Net proceeds from the offering were approximately $64.5 million, after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We intend to use the net proceeds of the offering to support the commercial launch activities for MIPLYFFA, continued commercial support for OLPRUVA and the continued development of celiprolol through potential NDA filings and other general corporate purposes.

Current wording

On August 8, 2024, we entered into an underwriting agreement (the “Underwriting Agreement”) with Cantor Fitzgerald & Co. and William Blair & Company, L.L.C., as representatives of the several underwriters named therein (collectively, the “Underwriters”), in connection with the offering, issuance and sale by us of 9,230,770 shares of our common stock at a public offering price of $6.50 per share, pursuant to the June 2024 Registration Statement and a related prospectus supplement dated August 8, 2024 filed with the SEC (the “August 2024 Offering”). Under the terms of the Underwriting Agreement, we also granted the Underwriters an option exercisable for 30 days to purchase up to an additional 1,384,615 shares of our common stock at the public offering price, less underwriting discounts and commissions, which the Underwriters exercised in full on August 9, 2024. The August 2024 Offering closed on August 12, 2024. Total shares issued were 10,615,385. Net proceeds from the offering were approximately $64.5 million, after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We used the net proceeds of the offering to support the commercial launch activities for MIPLYFFA, continued commercial support for OLPRUVA and the continued development of celiprolol through potential NDA filings and other general corporate purposes.

Previous wording

The assets acquired and liabilities assumed were recorded based on their acquisition date fair values. Consideration for the Merger was $72.6 million and consists of (i) approximately 2.96 million shares of Zevra common stock valued at $12.8 million, (ii) the Bridge Loan advances of $17.8 million, (iii) $12.0 million in cash paid to Nantahala; (iv) 2.27 million shares of Zevra Common Stock issued to Nantahala valued at $11.5 million based on the VWAP of shares of Zevra Common Stock during the 20 consecutive trading days ending on the trading date prior to August 30, 2023*;* (v) a secured promissory note payable by Zevra to Nantahala in the original principal amount of $5.0 million, (vi) $8.5 million in the estimated fair value of contingent consideration related to the CVRs, (vii) approximately 0.9 million shares of Zevra Common Stock issued to a former holder of Acer warrants valued at $4.0 million based on Zevra's common stock price on the Effective Date and (viii) $1.0 million in notes payable paid by the Company on Acer's behalf. In addition, effective as of immediately prior to the Effective Time, all of the outstanding and unexercised Acer stock options were automatically cancelled and ceased to exist without any cash or other consideration being paid or provided in respect thereof.

Current wording

The assets acquired and liabilities assumed in the Merger were recorded based on their acquisition date fair values. Consideration for the Merger was $72.6 million and consists of (i) approximately 2.96 million shares of Zevra common stock valued at $12.8 million, (ii) the Bridge Loan advances of $17.8 million, (iii) $12.0 million in cash paid to Nantahala; (iv) 2.27 million shares of Zevra Common Stock issued to Nantahala valued at $11.5 million based on the VWAP of shares of Zevra Common Stock during the 20 consecutive trading days ending on the trading date prior to August 30, 2023; (v) a secured promissory note payable by Zevra to Nantahala in the original principal amount of $5.0 million, (vi) $8.5 million in the estimated fair value of contingent consideration related to the CVRs, (vii) approximately 0.9 million shares of Zevra Common Stock issued to a former holder of Acer warrants valued at $4.0 million based on Zevra's common stock price on the Effective Date and (viii) $1.0 million in notes payable paid by the Company on Acer's behalf. In addition, effective as of immediately prior to the Effective Time, all of the outstanding and unexercised Acer stock options were automatically cancelled and ceased to exist without any cash or other consideration being paid or provided in respect thereof.

Previous wording

The Credit Agreement contains customary affirmative and negative covenants by us, which among other things, will require us to provide certain financial reports to the Lenders, meet certain minimum net product sales amounts, and limit our ability to incur or guarantee additional indebtedness, engage in certain transactions, and effect a consolidation or merger without consent. In addition, as long as the line of credit remains active, we must maintain a minimum cash balance of $20.0 million to ensure that we can meet our immediate capital needs. Our obligations under the Credit Agreement may be accelerated upon customary events of default, including non-payment of principal, interest, fees and other amounts, covenant defaults, insolvency, material judgments, or inaccuracy of representations and warranties. The Term Loans are secured by a first priority perfected lien on, and security interest in, substantially all of our current and future assets. The proceeds of the Term Loans were used to refinance certain of our previously existing indebtedness. We will use the remaining proceeds to pay fees and expenses related to the debt financing and fund the development and commercialization of MIPLYFFA and OLPRUVA.

Current wording

The Credit Agreement contains customary affirmative and negative covenants by us, which, among other things, will require us to provide certain financial reports to the Lenders, meet certain minimum net product sales amounts, and limit our ability to incur or guarantee additional indebtedness, engage in certain transactions, and effect a consolidation or merger without consent. In addition, as long as the line of credit remains active, we must maintain a minimum cash balance of $20.0 million to ensure that we can meet our immediate capital needs. Our obligations under the Credit Agreement may be accelerated upon customary events of default, including non-payment of principal, interest, fees and other amounts, covenant defaults, insolvency, material judgments, or inaccuracy of representations and warranties. The Term Loans are secured by a first priority perfected lien on, and security interest in, substantially all of our current and future assets. The proceeds of the Term Loans were used to refinance certain of our previously existing indebtedness. We will use the remaining proceeds to pay fees and expenses related to the debt financing and fund the development and commercialization of MIPLYFFA and OLPRUVA, and to further the development of its other product candidates.

Previous wording

The following table summarizes our cash flows for thethree months ended March 31, 2025, and 2024 (in thousands):

Current wording

The following table summarizes our cash flows for thesix months ended June 30, 2025, and 2024 (in thousands):

Previous wording

For the three months ended March 31, 2024, net cash used in operating activities of $16.2 million consisted of a net loss of $16.6 million and $0.2 million in changes in working capital; partially offset by $0.6 million in adjustments for non-cash items. Net loss was primarily attributable to our spending on research and development programs and operating costs; partially offsetby revenue received from product sales of OLPRUVA, reimbursements received under the French AC, and royalties or net sales milestone payments generated under the AZSTARYS License Agreement. The changes in working capital consisted of $7.4 million related to a change in accounts payable and accrued expenses, $0.1 million related to a change in operating lease liabilities, $2.6 million related to a change in inventories, and $0.3 million related to a change in other liabilities; partially offset by $9.1 million related to a change in accounts and other receivables, $1.0 million related to a change in discount and rebate liabilities, and $0.1 million related to a change in operating lease right-of-use assets. The adjustments for non-cash items primarily consisted of stock-based compensation expense of $2.1 million, interest expense of $0.2 million, and $1.9 million related to depreciation, amortization and other items; partially offset by a change in the fair value of warrant and CVR liability of $3.6 million.

Current wording

For the six months ended June 30, 2025, net cash used in operating activities of $11.8 million consisted of net income of $71.6 million, offset by $69.3 million in adjustments for non-cash items and changes in working capital of $14.1 million. Net income was primarily attributable to the sale of the PRV, as well as revenue received from product sales of MIPLYFFA and OLPRUVA, royalties generated under the AZSTARYS License Agreement, and reimbursements received under the French AC, partially offset by impairment and obsolescence charges and spend on R&D programs and operating costs. The adjustments for non-cash items primarily consisted of the gain on sale of PRV of $148.3 million, and a change in the fair value of warrant and CVR liability of $4.1 million, partially offset by impairment of intangible assets of $58.7 million, inventory obsolescence of $11.7 million, stock-based compensation expense of $5.6 million, $3.3 million of depreciation and amortization expense, and income tax expense of $3.4 million.

Previous wording

For the three months ended March 31, 2025, net cash used in operating activities of $8.2 million consisted of a net loss of $3.1 million and changes in working capital of $6.8 million, partially offset by $1.7 millionin adjustments for non-cash items. Net loss was primarily attributable to our spending on research and development programs and operating costs; partially offset by revenue received from product sales of MIPLYFFA and OLPRUVA, royalties generated under the AZSTARYS License Agreement, and reimbursements received under the French AC. The changes in working capital consisted of $7.3 million related to a change in accounts payable and accrued expenses, a $0.2 million change in inventories, $0.2 million related to a change in operating lease liabilities, $2.1 million related to a change in accounts and other receivables, partially offset by an increase of $0.6 million related to a change in other liabilities, $0.3 million in prepaids and other assets, $0.2 million related to a change in operating lease right-of-use assets, and $1.9 million related to a change in discount and rebate liabilities. The adjustments for non-cash items primarily consisted of stock-based compensation expense of $3.1 million, interest expense of $0.7 million, and $2.8 million related to depreciation, amortization and other items, partially offset by a change in the fair value of warrant and CVR liability of $4.9 million.

Current wording

For the six months ended June 30, 2024, net cash used in operating activities of $35.3 million consisted of a net loss of $36.5 million and $1.6 million in changes in working capital, partially offset by $2.8 million in adjustments for non-cash items. Net loss was primarily attributable to our spending on research and development programs and operating costs; partially offset by revenue received under the AZSTARYS License Agreement, and the Arimoclomol EAP. The changes in working capital consisted of $8.6 million related to a change in accounts payable and accrued expenses, $3.6 million change in inventories, $0.3 million related to a change in operating lease liabilities, and a decrease of $0.9 million in prepaids and other assets, partially offset by $8.4 million related to a change in accounts and other receivables, $2.7 million related to a change in discount and rebate liabilities, $0.3 million related to a change in operating lease right-of-use assets, and $0.3 million related to a change in other liabilities. The adjustments for noncash items primarily consisted of stock-based compensation expense of $4.8 million, an inventory obsolescence charge of $3.2 million, interest expense of $0.7 million, and $3.5 million related to depreciation, amortization and other items, partially offset by a change in the fair value of warrant and CVR liability of $9.4 million.

Previous wording

For the three months ended March 31, 2025, net cash provided byinvesting activities was $10.5 million, which was primarily attributable to maturities of investments of $18.0 million, partially offset by $7.4 million in purchases of investments.

Current wording

For the six months ended June 30, 2025, net cash provided by investing activities was $22.5 million, which was primarily attributable to proceeds from the sale of the PRV of $150.0 million and maturities of investments of $30.5 million, partially offset by $157.7 million in purchases of investments.

Previous wording

For the three months ended March 31, 2024, net cash provided by investing activities was$14.8 million, which wasprimarily attributable to maturities of investments.

Current wording

For the six months ended June 30, 2024, net cash provided by investing activities was $14.7 million, which was primarily attributable to maturities of investments.

Previous wording

For the three months ended March 31, 2024, net cash provided by financing activities was $1.2 million, which was primarily attributable to proceeds from the issuance of stock.

Current wording

For the six months ended June 30, 2025, net cash provided by financing activities was $3.0 million, which was primarily attributable to proceeds from the issuance of stock of $2.9 million.

Previous wording

For the three months ended March 31, 2025, net cash provided by financing activities was $1.6 million, which was primarily attributable to proceeds from the issuance of stock of $2.0 million partially offset by payments of principal on insurance financing arrangements of $0.4 million.

Current wording

For the six months ended June 30, 2024, net cash provided by financing activities was $16.5 million, which was primarily attributable to proceeds from the issuance of debt of $59.0 million, partially offset by repayments of debt of $42.7 million.

Previous wording

To date, we have generated revenue from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and consulting agreements. We expect that, for the foreseeable future, our sources of revenues will be from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, consulting agreements, and any other future arrangements related to one or more of our products or product candidates. We cannot guarantee that our current commercialization strategies, or any strategy we adopt in the future, will be successful. For instance, we received milestone payments under the AZSTARYS License Agreement, but we cannot guarantee that we will earn any additional milestone or royalty payments under this agreement in the future. We also cannot guarantee that we will continue to receive reimbursements under the French AC or successfully commercialize MIPLYFFA or OLPRUVA. We also expect to continue to incur significant additional costs associated with operating as a public company.

Current wording

To date, we have generated revenue from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and consulting agreements. We expect that, for the foreseeable future, our sources of revenues will be from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, and any other future arrangements related to one or more of our products or product candidates. We cannot guarantee that our current commercialization strategies, or any strategy we adopt in the future, will be successful. For instance, we received milestone payments under the AZSTARYS License Agreement, but we cannot guarantee that we will earn any additional milestone or royalty payments under this agreement in the future. We also cannot guarantee that we will continue to receive reimbursements under the French AC or the extent of our success in commercializing MIPLYFFA or OLPRUVA. We also expect to continue to incur significant additional costs associated with operating as a public company.

Previous wording

We have based our estimates of our cash needs and cash runway on assumptions that may prove to be wrong, and we may use our available capital resources sooner than we currently expect. In addition, we cannot guarantee that we will be able to generate sufficient proceeds from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, consulting agreements, or other funding transactions to fund our operating expenses. To meet any additional cash requirements, we may seek to sell additional equity or convertible securities that may result in dilution to our stockholders, issue additional debt or seek other third-party funding, including potential strategic transactions, such as licensing or collaboration arrangements. Because of the numerous risks and uncertainties associated with the development and commercialization of product candidates and products, we are unable to estimate the amounts of increased capital outlays and operating expenditures necessary to complete the commercialization and development of our partnered product or product candidates, should they obtain regulatory approval.

Current wording

We have based our estimates of our cash needs and cash runway on assumptions that may prove to be wrong, and we may use our available capital resources sooner than we currently expect. In addition, we cannot guarantee that we will be able to generate sufficient proceeds from product sales of MIPLYFFA and OLPRUVA, reimbursements received under the French AC, royalties or net sales milestone payments generated under the AZSTARYS License Agreement, or other funding transactions to fund our operating expenses. To meet any additional cash requirements, we may seek to sell additional equity or convertible securities that may result in dilution to our stockholders, issue additional debt or seek other third-party funding, including potential strategic transactions, such as licensing or collaboration arrangements. Because of the numerous risks and uncertainties associated with the development and commercialization of product candidates and products, we are unable to estimate the amounts of increased capital outlays and operating expenditures necessary to complete the commercialization and development of our partnered product or product candidates, should they obtain regulatory approval.

Previous wording

Our critical accounting policies have not changed materially from those described inPart II, Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations of our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed withthe SEC on March 12, 2025.

Current wording

Our critical accounting policies have not changed materially from those described in Part II, Item 7 – Management’s Discussion and Analysis of Financial Condition and Results of Operations of our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed withthe SEC on March 12, 2025.