Pharming Group N.V. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the Month of May 2025 Commission File Number: 001-39822 (Exact Name of Registrant as Specified in Its Charter) Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐ Indicate by check mark if the registrant is submitting the Fo ...

Leiden, the Netherlands, April 25, 2025: Pharming Group N.V. ("Pharming" or "the Company") (NASDAQ:PHAR) announces the following presentations by the Company or its collaborators at the 2025 Annual Meeting of the Clinical Immunology Society (CIS), taking place May 1-4, 2025 in Philadelphia, PA. These presentations include Phase III clinical data for leniolisib for pediatric patients aged 4-11 years with activated phosphoinositide 3-kinase delta (PI3Kδ) syndrome (APDS) and insights into APDS and additional p ...

Core Viewpoint - Pharming Group N.V. has received positive final guidance from the National Institute for Health and Care Excellence (NICE) for the reimbursement and use of Joenja® (leniolisib) in treating activated phosphoinositide 3-kinase delta (PI3Kδ) syndrome (APDS) in patients aged 12 and older within the NHS in England and Wales [1][2][4] Group 1: NICE Recommendation and Clinical Data - The NICE recommendation is based on comprehensive data from a Phase III clinical trial that showed significant improvements in immune deficiency and dysregulation with leniolisib compared to placebo [2][4] - The Phase III trial results indicated sustained clinical improvements during long-term treatment in an open-label extension trial [2] Group 2: Impact on Patients and Healthcare - The NICE recommendation is viewed as a significant milestone for patients with APDS, enhancing treatment options and potentially improving their quality of life [3][4] - Joenja® is now available for use and funded in England through the Innovative Medicines Fund, with expected funding in Wales within three months [4] Group 3: About Joenja® and APDS - Joenja® is the first and only targeted treatment for APDS, an oral small molecule PI3Kδ inhibitor that addresses the underlying immune system issues associated with the condition [8] - APDS is a rare primary immunodeficiency affecting approximately 1 to 2 people per million worldwide, characterized by severe recurrent infections and immune dysregulation [6][7]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Pharming Group N.V. (Exact Name of Registrant as Specified in Its Charter) Darwinweg 24 2333 CR Leiden The Netherlands (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form 40-F ☐ Indicate by check m ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF ...

Core Insights - Pharming Group N.V. has initiated a Phase II clinical trial for leniolisib targeting common variable immunodeficiency (CVID) patients with immune dysregulation, marking a significant step in addressing unmet medical needs in this patient population [1][4]. Group 1: Clinical Trial Details - The Phase II trial is a single-arm, open-label study involving approximately 20 patients aged 12 and older, focusing on safety, tolerability, pharmacokinetics, pharmacodynamics, and clinical efficacy of leniolisib in CVID patients [2]. - The trial specifically targets CVID patients exhibiting lymphoproliferation and at least one additional clinical manifestation of immune dysregulation, such as interstitial lung disease or autoimmune cytopenias [2][3]. - The lead investigator is Dr. Jocelyn Farmer, with clinical sites located in the US, UK, and EU [2]. Group 2: Disease Context and Unmet Needs - CVID is the largest group of symptomatic primary immunodeficiency patients, with about 50% experiencing autoimmune and lymphoproliferative complications due to immune dysregulation [3]. - Patients with CVID and immune dysregulation have an 11-fold increased mortality rate compared to those with infectious manifestations alone, highlighting the critical need for effective therapies [3]. - The global prevalence of CVID with immune dysregulation is estimated at approximately 39 patients per million [3]. Group 3: Leniolisib Overview - Leniolisib is an oral small molecule phosphoinositide 3-kinase delta (PI3Kδ) inhibitor, currently approved in the U.S. for treating activated phosphoinositide 3-kinase delta syndrome (APDS) [5][6]. - The drug has shown statistically significant improvement in clinical trials for APDS, and its safety and tolerability for long-term use have been supported by interim data [6]. - Leniolisib is under regulatory review in multiple regions, including the European Economic Area, Canada, and Australia, with plans for further approvals in Japan and South Korea [6]. Group 4: Company Background - Pharming Group N.V. is a global biopharmaceutical company focused on developing therapies for rare and life-threatening diseases, with a portfolio that includes protein replacement therapies and precision medicines [7]. - The company is headquartered in Leiden, the Netherlands, and operates in over 30 markets worldwide [7].

Financial Data and Key Metrics Changes - Full-year 2024 revenues increased by 21% to $297 million, exceeding guidance, with strong performance in Q4 [7][42] - Operating profit increased by $5.6 million, marking the second consecutive quarter of positive operating profit [43] - Net results shifted from a loss in Q4 2023 to a net profit in Q4 2024, with positive operating cash flow for the second quarter in a row [44] Business Line Data and Key Metrics Changes - RUCONEST revenue grew 11% to $252 million for the year, with a 9% increase in Q4, driven by new patient enrollments and prescriber base expansion [7][11] - Joenja revenue surged by 147% to $45 million in 2024, with a 65% increase in Q4 [9][12] Market Data and Key Metrics Changes - The prescriber base for RUCONEST increased by 11% and new patient enrollments rose by 24% [11] - Joenja's patient pipeline is expanding, with over 240 identified patients in the US, 40% of whom are on paid therapy [20] Company Strategy and Development Direction - The company aims to develop a leading global rare disease portfolio, leveraging a proven clinical development and commercial infrastructure [7] - The acquisition of Abliva is seen as a strategic move to enhance the company's pipeline and revenue potential [6][46] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in RUCONEST's continued growth despite increasing competition, citing its unique profile and strong patient experience [50][79] - The company anticipates total revenues for 2025 to be between $315 million and $335 million, reflecting continued growth in RUCONEST and Joenja [47] Other Important Information - The company is actively monitoring potential US tariffs on drugs and is taking steps to mitigate any impact on its supply chain [70] - The anticipated operating expenses related to the Abliva acquisition are estimated at $30 million for 2025, including $17 million for R&D [49][69] Q&A Session Summary Question: Insights on KL1333 and patient population - The addressable population for KL1333 is estimated at 30,000 patients in the US and Europe, focusing on those with specific mitochondrial DNA mutations [59] Question: Breakdown of patients in the expanded access program - Patients in the expanded access program are in multiple countries, with some on paid therapy through name patient programs, but specific numbers are not disclosed [63] Question: Recurring costs from Abliva acquisition - Of the $30 million anticipated OpEx from the Abliva acquisition, approximately $17 million will be for R&D, with the remainder being non-recurring costs [69] Question: Impact of potential US tariffs - The company is monitoring the situation regarding US tariffs and is exploring ways to minimize potential impacts on its supply chain [70] Question: RUCONEST's growth despite competition - Management believes RUCONEST will remain a treatment of choice due to its unique profile and strong patient experience, supported by market research [79][81] Question: Timeline for CVID trials - A Phase 2 study is anticipated for CVID, with a Phase 3 study likely required for registration [102] Question: Future expectations for CVID and fast-track designation - The company plans to explore fast-track designation options for CVID, given the severity of the disease [105]

Financial Performance - Total revenues for 2024 increased by 21% to US$297.2 million, exceeding guidance of US$280-$295 million, driven by record RUCONEST® revenue and strong Joenja® growth [3][8][52] - RUCONEST® revenue for the full year 2024 was US$252.2 million, an 11% increase compared to 2023, while Joenja® revenue reached US$45.0 million, a 147% increase in its first full year of sales [8][52] - Fourth quarter 2024 total revenues increased by 14% to US$92.7 million compared to the same quarter in 2023, with RUCONEST® revenue at US$79.6 million (9% increase) and Joenja® revenue at US$13.1 million (66% increase) [8][44][49] Clinical Development and Pipeline - The company is advancing regulatory reviews for leniolisib in key markets and for pediatric use, with two ongoing Phase II trials for additional primary immunodeficiencies (PIDs) [4][27] - The acquisition of Abliva has been completed, adding KL1333 for mitochondrial diseases to the clinical pipeline, which has blockbuster potential [5][34] - Positive top-line results were announced for a Phase III trial of leniolisib in children aged 4 to 11, with global regulatory filings planned for the second half of 2025 [21][19] Market and Product Insights - The U.S. market contributed 98% of 2024 revenues, with the company focusing on expanding its portfolio in the U.S. and Joenja® in key countries [10][8] - The company identified over 880 diagnosed APDS patients globally, with ongoing initiatives to diagnose additional patients through genetic testing programs [14][15] - The strong growth in RUCONEST® revenue is attributed to new physician prescriptions and patient enrollments, with a 24% increase in total enrollments in 2024 [11][9] Financial Outlook - For 2025, the company anticipates total revenues between US$315 million and US$335 million, representing a growth of 6% to 13% [78] - The company plans to continue investing in its product portfolio and R&D pipeline, particularly for PIDs and primary mitochondrial diseases [7][78] - Operating expenses are expected to remain below the prior year's levels, with an estimated US$30 million in Abliva-related expenses [78]

Core Insights - Pharming Group N.V. will participate in the 37th Annual Roth Conference in Dana Point, California, from March 16-18, 2025, with a fireside chat scheduled for March 17 at 01:30 PM PT [1] - The company is focused on developing and commercializing innovative therapies for patients with rare and life-threatening diseases [3] Company Overview - Pharming Group N.V. is a global biopharmaceutical company headquartered in Leiden, the Netherlands, with a presence in over 30 markets across North America, Europe, the Middle East, Africa, and Asia-Pacific [3] - The company specializes in protein replacement therapies and precision medicines, including small molecules and biologics [3]

Company Overview - Pharming Group N.V. is a global biopharmaceutical company focused on transforming the lives of patients with rare, debilitating, and life-threatening diseases [5] - The company is engaged in the commercialization and development of an innovative portfolio of protein replacement therapies and precision medicines, including small molecules and biologics [5] - Pharming is headquartered in Leiden, the Netherlands, and operates in over 30 markets across North America, Europe, the Middle East, Africa, and Asia-Pacific [5] Financial Reporting - Pharming will report its preliminary (unaudited) fourth quarter and full year 2024 financial results for the period ended December 31 on March 13, 2025 [1] - A presentation for analysts and investors will be hosted on the same day at 13:30 CET/08:30 am EDT [1] Conference Call Participation - Participants interested in the conference call must register in advance to receive dial-in information and a unique PIN [2] - The company will only take questions from dial-in attendees during the conference call [3]