ADHERE data show VYVGART® Hytrulo has potential to be first advancement for CIDP patients in 30 years Real-world data demonstrate gMG patients able to significantly reduce steroid use over first six months of initiating VYVGART® treatment April 16, 2024 – 7:00am CET Amsterdam, the Netherlands – argenx SE ((Euronext &amp, NASDAQ:ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced that data from its Phase 3 ADHERE trial eval ...

Shares of Argenx (ARGX) rose 11.2% on Mar 21, after Japan-based Chugai Pharmaceutical posted disappointing results from a late-stage study evaluating Enspryng (satralizumab) as a potential treatment for generalized myasthenia gravis (gMG). This drug has been developed in collaboration with Roche (RHHBY) .The Tokyo-based company evaluated the Roche-partnered drug in the phase III LUMINESCE study in patients with gMG, a rare autoimmune disease that leads to muscle weakness. While patients who received the Chu ...

argenx SE (ARGX) shares rallied 11.2% in the last trading session to close at $396.88. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 10.8% loss over the past four weeks.Share price rose after Japan-based Chugai Pharmaceutical posted disappointing results from a late-stage study evaluating Enspryng (satralizumab) as a potential treatment for generalized myasthenia gravis (gMG). This drug has been developed i ...

Financial Performance - The company reported net product sales of $1.2 billion from global product net sales in fiscal year 2023[35]. - Cumulative operating losses since inception total $2,405 million, with expectations of continued losses for the foreseeable future[34]. - As of December 31, 2023, the company had cash and cash equivalents of $2,049 million and current financial assets of $1,131 million[36]. - Cash and cash equivalents and current financial assets increased to $3.2 billion as of December 31, 2023, up from $2.2 billion a year earlier[38]. - The company raised $1.3 billion in gross proceeds from a global offering in July 2023, selling 1,917,715 ADSs at $490.00 each and 663,918 ordinary shares at €436.37 each[37]. Competition and Market Dynamics - The company faces significant competition in the autoimmune field, with multiple monoclonal antibodies and other biologics in development by various companies[49]. - The commercialization of VYVGART in new indications will require further expansion of the sales and marketing organization[40]. - Distribution agreements have been established with partners in various regions, which may affect product revenues and profitability[42]. - The overall use of biosimilars is increasing, which may lead to greater competition and impact sales of innovative products[56]. Regulatory Environment - The regulatory exclusivity periods for VYVGART and VYVGART HYTRULO are expected to extend until December 2033 in the U.S. and until August 2032 in the EU[55]. - The Inflation Reduction Act (IRA) allows the U.S. Department of Health and Human Services to negotiate prices for a specified number of drugs, with the first negotiations affecting prices starting in 2026[59]. - The IRA imposes penalties on drug manufacturers that increase prices at a rate greater than inflation, which could significantly impact revenue[60]. - The European Commission's proposal to revise pharmaceutical legislation may shorten data and market exclusivity periods, affecting future product demand[58]. - Compliance with government pricing laws is mandatory, and failure to comply could result in significant civil monetary penalties[64]. - The American Rescue Plan of 2021 eliminated the cap on Medicaid rebates, potentially increasing the financial burden on pharmaceutical manufacturers[66]. - The Infrastructure Investment and Jobs Act requires manufacturers to provide refunds for unused portions of certain drugs, impacting financial results[67]. - Legislative changes at both federal and state levels are expected to continue affecting pharmaceutical pricing and demand for products[62]. Clinical Development and Trials - The company is developing products for different indications, with potential negative results in clinical trials impacting overall perception and commercialization efforts[45]. - The ADVANCE-SC clinical trial for VYVGART HYTRULO in adults with ITP did not meet its primary endpoint, indicating challenges in clinical development[113]. - The Phase 3 ADDRESS clinical trial for SC efgartigimod in adults with pemphigus vulgaris showed no significant difference in primary endpoint achievement compared to placebo, leading to a decision not to pursue further development in this area[113]. - Patient enrollment for clinical trials is critical and may be hindered by the small target population for rare diseases, affecting the ability to realize full commercial potential[127]. - The company faces potential delays in clinical trials due to regulatory requirements, which could jeopardize development and approval processes[87]. - Significant delays in clinical trials may increase costs and harm commercial prospects, allowing competitors to market products earlier[89]. Compliance and Legal Risks - Compliance with healthcare laws is critical, as violations could result in significant penalties and operational disruptions[81]. - The company is expanding its internal compliance program to meet diverse healthcare regulations, which involves substantial costs[84]. - Compliance costs with regulatory authorities could be substantial, and failure to comply may result in sanctions or delays in product development[93]. - The company is subject to evolving privacy laws, including the EU GDPR, which imposes fines of up to €20 million or 4% of total worldwide annual turnover for serious offenses[95]. - Non-compliance with environmental laws could result in substantial fines and reputational damage[109]. Intellectual Property and Market Position - The success of the company depends on obtaining and maintaining intellectual property rights, and failure to do so could adversely affect its competitive advantage[161]. - The scope of patent protection is uncertain, and competitors may market similar products if patents are not adequately enforced[162]. - The company may face challenges in preparing and filing necessary patent applications in a timely manner, which could affect its ability to commercialize products[163]. - The company may not be successful in acquiring or in-licensing necessary third-party intellectual property rights, which could hinder product development[175]. - The company relies on trade secret protection for proprietary information, but the difficulty in protecting these secrets increases the risk of competitors duplicating its technological achievements[184]. Operational Challenges - The company faces operational challenges as it increases the number of clinical trials, which may lead to higher costs and delays[118]. - The company relies on third parties for research and clinical trials, and any issues in these relationships could adversely affect business operations[132]. - The company faces risks related to the reliance on single-source suppliers for raw materials, which could lead to delays in research or clinical trials if supply is interrupted[140]. - Manufacturing processes are dependent on contract manufacturing organizations (CMOs), and any failure in their ability to meet specifications could adversely affect clinical trials and regulatory approvals[144]. - The company collaborates with Lonza and FUJIFILM for drug substance manufacturing, which involves complex processes that could lead to product defects if not managed properly[145]. Strategic Growth and Management - The company may engage in strategic transactions such as acquisitions, collaborations, or investments to enhance its business but may face challenges in identifying suitable targets or satisfactory conditions for these transactions[156]. - Integration of newly acquired companies or technologies could be expensive and time-consuming, potentially straining managerial and operational resources[157]. - The company must continue to implement and improve its managerial and operational systems to manage anticipated growth effectively[203]. - The company is increasingly dependent on its information technology systems, which are critical for maintaining sensitive information and could be vulnerable to cyber-attacks[158]. - Cybersecurity incidents pose evolving risks, and despite efforts to secure information systems, there is no assurance that breaches will not occur, potentially disrupting operations and increasing costs[159]. Tax and Financial Regulations - The company has benefited from research and development tax incentives, including tax credits and payroll withholding tax exemptions, which may be challenged by tax authorities, potentially impacting future cash flows[204]. - The effective tax rates could be adversely affected by changes in tax laws and regulations, particularly regarding the Belgian innovation income deduction, which could significantly impact the company's tax assets[208]. - The Organisation of Economic Co-operation and Development (OECD) has introduced the Pillar Two Directive, which may subject the company to new tax regulations as early as 2025, although no impact is expected in 2024[210]. - The company is subject to transfer pricing regulations that may change and could materially impact financial results as international operations expand[206]. - The company has considerable tax assets in Belgium, which may be forfeited or restricted due to various transactions or changes in statutory law[211]. Shareholder and Governance Issues - Holders of ADSs do not have the same voting rights as ordinary shareholders, which may limit their ability to influence corporate governance[216]. - The company is exempt from certain U.S. securities laws as a foreign private issuer, allowing it to file less information with the SEC compared to U.S. domestic companies[227]. - The company may face challenges in maintaining effective internal controls over financial reporting, which could lead to financial statement restatements and negatively impact the trading price of its ADSs[214]. - The company is not obligated to comply with all best practice provisions of the Dutch Corporate Governance Code (DCGC), which may affect shareholders' rights[225].

Exhibit 99.1 AnnualReport2023 Disclaimer PDF print – this document is only a "printed version" and is not the original annual financial reporting including the audited financial statements pursuant to A These original annual financial reporting included in the audited financial statements and the auditor's report thereto, are included in the single report package which can be found at https://www.argenx.com/investors/financial-reports 2023 Annual Report including the Annual Financial Statements for the year ...

ADHERE data presentation will highlight first potential innovation for CIDP patients in 30 years Abstracts reflect real-world value and consistent efficacy and safety profile associated with long-term use of VYVGART® and VYVGART® Hytrulo in gMG patients March 7, 2024, 10:01 pm CET Amsterdam, the Netherlands   – argenx SE ((Euronext &amp, NASDAQ:ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced that eight abstracts, inclu ...

argenx SE (NASDAQ:ARGX) Q4 2023 Results Conference Call February 29, 2024 8:30 AM ET Company Participants Beth DelGiacco - VP and Global Head, Corporate Communications and Investor Relations Tim Van Hauwermeiren - Chief Executive Officer Karl Gubitz - Chief Financial Officer Karen Massey - Chief Operating Officer Conference Call Participants Tazeen Ahmad - Bank of America Derek Archila - Wells Fargo Rajan Sharma - Goldman Sachs Yatin Suneja - Guggenheim Yaron Werber - TD Cowen Allison Bratzel - Piper Sandle ...

$374 million in fourth quarter and $1.2 billion in full year global net product sales sBLA for VYVGART® Hytrulo for CIDP accepted for priority review by FDA with PDUFA target action date of June 21, 2024 On track to report data from six Phase 2 proof-of-concept trials by end of 2024 Management to host conference call today at 2:30 pm CET (8:30 am ET) February 29, 2024, 7:00 am CET Amsterdam, the Netherlands – argenx SE ((Euronext &amp, NASDAQ:ARGX), a global immunology company committed to improving the li ...

Investors are always looking for stocks that are poised to beat at earnings season and argenx SE (ARGX) may be one such company. The firm has earnings coming up pretty soon, and events are shaping up quite nicely for their report.That is because argenx is seeing favorable earnings estimate revision activity as of late, which is generally a precursor to an earnings beat. After all, analysts raising estimates right before earnings — with the most up-to-date information possible — is a pretty good indicator of ...

February 26, 2024Amsterdam, the Netherlands – argenx (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced that members of the management team will participate in the following investor conferences in March: TD Cowen 44th Annual Health Care Conference. Fireside chat on Monday, March 4, 2024 at 11:10 a.m. ET in Boston, MA.Leerink Global Biopharma Conference. Fireside chat on Monday, March 11, 2024 at 2:40 ...