Evaxion to present new data at AACR Annual Meeting

• Two abstracts accepted for presentation
• One abstract on new additional biomarker and immunogenicity data for personalized cancer vaccine EVX-01
• Another abstract on the use of Evaxion’s AI-Immunology™ platform in developing a personalized cancer vaccine strategy for glioblastoma (brain cancer)
• Evaxion will also participate in the AACR Oncology Industry Partnering event ahead of the annual meeting

COPENHAGEN, Denmark, March 17, 2026 - Evaxion A/S (NASDAQ: EVAX) (“Evaxion”), a clinical-stage TechBio company developing novel vaccines with its pioneering AI-Immunology™ platform, announces two abstracts accepted for presentation at the American Association for Cancer Research (AACR) Annual Meeting taking place in San Diego, California, April 17-22, 2026.

One abstract will include new biomarker and immunogenicity data for cancer vaccine EVX-01. Designed with Evaxion’s AI-Immunology™ platform, EVX-01 is a personalized cancer vaccine currently being evaluated as a treatment for advanced melanoma (skin cancer).

The data stems from the phase 2 trial investigating EVX-01 in combination with MSD’s (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy, KEYTRUDA® (pembrolizumab) in patients with advanced melanoma. Each patient enrolled in the trial has received a unique vaccine designed and manufactured based on their individual biology. KEYTRUDA® is a registered trademark of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA.

The other abstract includes data on the use of AI-Immunology™ to identify endogenous retrovirus (ERV)-derived neoantigens to include in personalized vaccines to treat glioblastoma, a deadly brain cancer, for which limited therapeutic options exist.

In line with our strategy to identify potential partners and opportunities for both business partnerships and scientific collaborations, we will also participate in the AACR Oncology Industry Partnering event taking place ahead of the annual meeting.

Presentations details:

Abstract title: AI-designed personalized neoantigen vaccine, EVX-01, induces durable de novo T-cell responses in advanced melanoma patients Poster#: 7741 Session category: Clinical research Session title: Immune response to therapies Location: Poster section 42 Date/Time: April 22, 2026, at 9am-12pm CST/16-19 CET Presenter: Mads Lausen Nielsen, PhD, Project Manager at Evaxion

Abstract title: Endogenous retrovirus-derived neoantigens enable a personalized cancer vaccine strategy for glioblastoma Poster#: 6975 Session category: Immunology Session title: Novel Models of Immunotherapy Response Location: Poster section 8 Date/Time: April 22, 2026, at 9am-12pm CST/16-19 CET Presenter: Megan Benz, Duke University Medical Center

Contact information

Evaxion A/S Mads Kronborg Vice President, Investor Relations & Communication +45 53 54 82 96 [email protected]

About Evaxion

Evaxion is a pioneering TechBio company based upon its proprietary, clinically validated and scalable AI platform, AI-Immunology™. The platform harnesses the power of artificial intelligence to decode the human immune system and develop novel vaccine candidates for cancer and infectious diseases.

With AI-Immunology™ we conduct rapid, efficient and high-quality target discovery, drug design and development. Our team of +40 experts covers the entire value chain from target discovery to clinical development

We have developed a clinical pipeline of both personalized and off-the-shelf cancer vaccine candidates as well as prophylactic vaccine candidates for infectious diseases. All our candidates address high unmet medical needs, reflecting our commitment to transforming patients’ lives by providing innovative and targeted treatment options.

For more information about Evaxion, AI-Immunology™ and our pipeline, please visit our website.