NewAmsterdam Pharma Provides Corporate Update and Reports Third Quarter Financial Results

– Marketing Authorization Applications for obicetrapib and FDC of obicetrapib plus ezetimibe accepted for review by European Medicines Agency –

– BROOKLYN and BROADWAY pooled MACE analysis published in the Journal of the American College of Cardiology, while the BROADWAY pre-specified Alzheimer’s substudy was published in the Journal of Prevention of Alzheimer's Disease –

– $756.0 million in cash, cash equivalents and marketable securities at September 30, 2025 –

Naarden, the Netherlands and Miami, USA; November 5, 2025 – NewAmsterdam Pharma Company N.V. (Nasdaq: NAMS or “NewAmsterdam” or the “Company”), a late-stage, clinical biopharmaceutical company developing oral, non-statin medicines for patients at risk of cardiovascular disease (“CVD”) with elevated low-density lipoprotein cholesterol (“LDL-C”), for whom existing therapies are not sufficiently effective or well-tolerated, today announced financial results for the quarter ended September 30, 2025 and provided a corporate update.

“We remain acutely focused on our mission to deliver obicetrapib, as a novel, well-tolerated, and conveniently administered therapy for millions of patients with cardiometabolic disease who continue to struggle to reach their LDL-C goals,” said Michael Davidson, M.D., Chief Executive Officer of NewAmsterdam. “In the third quarter, we achieved a significant regulatory milestone with the European Medicines Agency’s (“EMA”) acceptance for review of the marketing authorization applications (“MAAs”), by our partner Menarini, for both obicetrapib monotherapy and the fixed-dose combination (“FDC”) with ezetimibe. These submissions, supported by data from our pivotal BROADWAY, BROOKLYN and TANDEM trials, represent an important step toward bringing obicetrapib to patients across Europe.”

“In parallel, we continue to advance our broader clinical development strategy, including PREVAIL, our ongoing cardiovascular outcomes trial (“CVOT”), and REMBRANDT, our Phase 3 imaging trial,” continued Dr. Davidson. “We are also making meaningful progress building our global infrastructure to support the potential launch of obicetrapib, if approved. As we engage with the investment and medical communities through upcoming conference and medical meetings, we look forward to sharing new pooled efficacy and safety data and to further highlighting our strategic vision for obicetrapib as a differentiated therapy in a large and growing market.”

Clinical Development Updates

NewAmsterdam is developing obicetrapib, an oral, low-dose and once-daily investigational cholesteryl ester transfer protein (“CETP”) inhibitor, as the preferred LDL-C lowering therapy to be used in patients at risk of CVD for whom existing therapies are not sufficiently effective or well-tolerated.

Upcoming Milestones and Ongoing Trials:

Following the successful completion and positive topline results of the Phase 3 BROADWAY, TANDEM, and BROOKLYN trials, NewAmsterdam plans to announce additional data from these trials relating to obicetrapib and the FDC of obicetrapib plus ezetimibe.

The following Phase 3 trials are currently ongoing:

NewAmsterdam also plans to initiate the RUBENS Phase 3 clinical trial to evaluate obicetrapib in combination with ezetimibe in patients with type 2 diabetes or metabolic syndrome that require additional lowering of LDL-C despite treatment with available therapy. The RUBENS trial is expected to initiate in the fourth quarter of 2025.

Corporate Updates

Third Quarter Financial Results

About Obicetrapib

Obicetrapib is a novel, oral, low-dose CETP inhibitor that NewAmsterdam is developing to overcome the limitations of current LDL-lowering treatments. In each of the Company’s Phase 2 trials, ROSE2, TULIP, ROSE, and OCEAN, as well as the Company’s Phase 3 BROOKLYN, BROADWAY and TANDEM trials, evaluating obicetrapib as monotherapy or combination therapy, the Company observed statistically significant LDL-lowering combined with a side effect profile similar to that of placebo. The Company commenced the Phase 3 PREVAIL cardiovascular outcomes trial in March 2022, which is designed to assess the potential of obicetrapib to reduce occurrences of MACE. The Company completed enrollment of PREVAIL in April 2024 and randomized over 9,500 patients. Commercialization rights of obicetrapib in Europe, either as a monotherapy or as part of a fixed-dose combination with ezetimibe, have been exclusively granted to the Menarini Group, an Italy-based, leading international pharmaceutical and diagnostics company.

About Cardiovascular Disease

Cardiovascular disease remains the leading cause of death globally, despite the availability of lipid-lowering therapies (“LLTs”). By 2050 more than 184 million U.S. adults are expected to be affected by CVD and hypertension, including 27 million with coronary heart disease and 19 million with stroke. In the United States from 2019 through 2022, CVD age-adjusted mortality rates increased by 9%, reversing the trend observed since 2010 and undoing nearly a decade of progress. Despite the availability of high-intensity statins and non-statin LLTs, LDL-C target level attainment remains low, contributing to residual cardiovascular risk, and underscoring a significant clinical need for improved therapeutic regimens. Even with 269 million LLT prescriptions written over the last 12 months, 30 million under-treated US adults are not at their risk-based LDL-C goal, of which 13 million have ASCVD. Less than 1 in 4 patients with ASCVD achieve an LDL-C goal of less than 70 mg/dL and only 10% of very high risk ASCVD patients achieve the goal below 55 mg/dL. In addition to the 30 million under-treated U.S. adults, there are 10 million patients diagnosed with elevated LDL-C who are not taking any LLTs including statins. Beyond LDL-C, additional factors are at play, such as lifestyle choices, tobacco use, and obesity, as well as inflammation, thrombosis, triglyceride levels, elevated Lp(a) levels, and type 2 diabetes.

Alzheimer’s Analysis

In BROADWAY, a pre-specified analysis was designed to assess plasma biomarkers of Alzheimer’s disease (“AD”) in patients enrolled in the BROADWAY trial and evaluated the effects of longer duration of therapy (12 months) with a prespecified ApoE population, based on phenotypic analysis. The analysis included 1,535 patients, including 367 ApoE4 carriers (ApoE3/E4 or ApoE4/E4), whose ApoE status was able to be determined. Because this analysis was based on a subset of patients from BROADWAY (which was designed to evaluate LDL-C reductions in an ASCVD and/or HeFH population), the AD analysis was not controlled for baseline differences between the treatment and placebo populations, but statistical analyses were adjusted for baseline biomarker values and age. The absolute and percent change over 12 months in p-tau217, a key biomarker of AD pathology, was measured among patients with baseline and end of study datapoints above the lower limit of quantitation. Additional outcome measures included NFL, GFAP, p-tau181, and Aβ42/40 ratio absolute and percent change over 12 months. NewAmsterdam observed statistically significant lower absolute changes in p-tau217 compared to placebo over 12 months in both the full analysis set (p=0.025; n= 1,535) and in ApoE4 carriers (p=0.022; n=367) as well as favorable trends in the other AD biomarkers. Although a safety analysis was not performed in the AD analysis population, in BROADWAY obicetrapib was observed to be well-tolerated, with safety results comparable to placebo.

About NewAmsterdam

NewAmsterdam Pharma (Nasdaq: NAMS) is a late-stage clinical biopharmaceutical company whose mission is to improve patient care in populations with metabolic diseases where currently approved therapies have not been adequate or well tolerated. We seek to fill a significant unmet need for a safe, well-tolerated and convenient LDL-lowering therapy. In multiple phase 3 trials, NewAmsterdam is investigating obicetrapib, an oral, low-dose and once-daily CETP inhibitor, alone or as a fixed-dose combination with ezetimibe, as LDL-C lowering therapies to be used as an

adjunct to statin therapy for patients at risk of CVD with elevated LDL-C, for whom existing therapies are not sufficiently effective or well tolerated.

Forward-Looking Statements

Certain statements included in this press release that are not historical facts are forward-looking statements for purposes of the safe harbor provisions under the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements generally are accompanied by words such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “should,” “would,” “plan,” “predict,” “potential,” “seem,” “seek,” “future,” “outlook” and similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, but are not limited to, statements regarding the Company’s business and strategic plans; the Company’s commercial opportunity; the therapeutic and curative potential of the Company’s product candidates; the Company’s clinical trials and the timing for commencing trials, enrolling patients and completing trials; the timing and forums for announcing data; the achievement and timing of regulatory filings and approvals; and plans for commercialization. These statements are based on various assumptions, whether or not identified in this press release, and on the current expectations of the Company’s management and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as and must not be relied on as a guarantee, an assurance, a prediction, or a definitive statement of fact or probability. Actual events and circumstances are difficult or impossible to predict and may differ from assumptions. Many actual events and circumstances are beyond the control of the Company.

These forward-looking statements are subject to a number of risks and uncertainties, including changes in domestic and foreign business, market, financial, political, and legal conditions; risks related to the approval of the Company’s product candidates and the timing of expected regulatory and business milestones, including potential commercialization; whether topline, initial or preliminary results from a particular clinical trial will be predictive of the final results of that trial and whether results of early clinical trials will be indicative of the results of later clinical trials, or whether projections regarding clinical outcomes will reflect actual results in future clinical trials or clinical use of our product candidates, if approved; the potential for varying interpretation of the results of clinical trials and analyses; the impact of competitive product candidates; and those risks, uncertainties and other factors discussed under the caption “Item 1A. Risk Factors” and elsewhere in the Company’s most recent Form 10-K, Form 10-Q and other public filings with the Securities and Exchange Commission, which are available at www.sec.gov. Additional risks related to the Company’s business include, but are not limited to: uncertainty regarding outcomes of the Company’s ongoing clinical trials, particularly as they relate to regulatory review and potential approval for its product candidates; risks associated with the Company’s efforts to commercialize its product candidates; the Company’s ability to negotiate and enter into definitive agreements on favorable terms, if at all; the impact of competing product candidates on the Company’s business; risks and uncertainties relating to intellectual property and regulatory exclusivities; the Company’s ability to attract and retain qualified personnel; and the Company’s ability to continue to source the raw materials for its product candidates. If any of these risks materialize or the Company’s assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that the Company does not presently know or that the Company currently believes are immaterial that could also cause actual results to differ from those contained in the forward-looking statements.

In addition, forward-looking statements reflect the Company’s expectations, plans, or forecasts of future events and views as of the date of this press release and are qualified in their entirety by reference to the cautionary statements herein. The Company anticipates that subsequent events and developments may cause the Company’s assessments to change. These forward-looking statements should not be relied upon as representing the Company’s assessment as of any date subsequent to the date of this press release. Accordingly, undue reliance should not be placed upon the forward-looking statements. Neither the Company nor any of its affiliates undertakes any obligation to update these forward-looking statements, except as may be required by law.

Company Contact

Matthew Philippe

P: 1-917-882-7512

matthew.philippe@newamsterdampharma.com

Media Contact

Real Chemistry on behalf of NewAmsterdam

Christian Edgington

P: 1-513-310-6410

cedgington@realchemistry.com

Investor Contact

Precision AQ on behalf of NewAmsterdam

Austin Murtagh

P: 1-212-698-8696

austin.murtagh@precisionaq.com

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