Nova Confirms New Gold-Copper System Developing at West Wing

• Field observations and 2025 surface assay results have delineated a gold-copper anomaly at West Wing measuring approximately 1,500m by 800m (Figures 4 and 5).
  
  
• Anomaly supported by:
  
  
  • Seven rock samples grading >3 g/t Au including a high of 15.5 g/t Au (Table 1), and 16 soil samples grading >1 g/t Au with a peak of 3.8 g/t Au (Table 2), and;
    
    
  • Three rocks samples grading > 1% Cu with a high of 6.9% (Table 3), and 16 soil samples grading > 0.2 % Cu with a high of 0.55% (Table4).

• These results build on earlier surface reconnaissance at West Wing, which returned rock samples of up to 25.8 g/t Au (ASX Announcement: 26 February 2024).
  
  

During the 2025 field season, Nova’s geologist team, led by General Manager and geologist Mr Hans Hoffman, undertook an extensive surface exploration mapping and sampling program across three main areas of the Estelle Project comprised of over 30 traverses covering 75-line kilometers, 430 soil samples, 170 rock samples, and 26 stream sediment samples (Figure 1).

As a result of that program and reported to date:

• Assay results from recent rock and soil sampling have outlined a newly developing large-scale gold-copper system at West Wing, as detailed in this announcement.
  
  

Further results from 2025 soil and rock sampling across the project district will be reported by area as they are received and processed in the coming weeks.

One of the most exciting discoveries of the season is the follow-up work done at West Wing where a 1,500m x 800m gold-copper anomaly was delineated with soil and rock sampling. Unlike a majority of the prospects at Estelle, the West Wing anomaly is primarily hosted in hornfels sedimentary rock, although it is adjacent to the Estelle pluton. Out of all the soil anomalies identified at Estelle, West Wing shows the highest continuous grades in hornfels. Of the 46 soil samples collected in the vicinity of West Wing, 21 were greater than 0.5 g/t Au, including 16 greater than 1.0 g/t Au, and five greater than 2.0 g/t Au with a high of 3.8 g/t Au. Of the 30 rock samples collected around West Wing, eight were greater than 2.0 g/t Au, including three samples over 5.0 g/t Au, with a high of 15.5 g/t Au (Figure 3).

West Wing also shows a notable copper signature with 16 soil samples greater than 0.2% Cu and three rock samples greater than 1% Cu, with a high of 6.9% Cu.

• Further results and potential new discoveries from the 2025 surface exploration mapping and sampling program
• Material PFS test-work results as they become available
• Winter trail mobilization of heavy equipment
• Airborne geophysical surveys to commence in the spring of 2026
• Antimony phase 1 project updates
• Metallurgical test work ongoing
• Environmental test work ongoing
• West Susitna access road updates
• Updated MRE
• Updates on the company redomiciliation to the US

Vannu Khounphakdy, Professional Geologist and member of Australian Institute of Geoscientists contracted by Nova Minerals to provide geologic consulting services. Mr. Khounphakdy holds a Master of Science in Mine Geology and Engineering. He is a qualified person with at least 5 years experience with this type of project. By reason of education, affiliation with a professional association, and past relevant work experience, Mr. Khounphakdy fulfills the requirements of Qualified Person (QP) for the purposes of SEC Regulation SK-1300 for data QA/QC checks relevant to this announcement.

Hans Hoffman is a State of Alaska Certified Professional Geologist contracted by Nova Minerals to provide geologic consulting services. Mr. Hoffman is a member of the American Institute of Professional Geologists and holds a Bachelor of Science degree in Geological Engineering with a double major in Geology and Geophysics. He is a qualified person with at least 5 years of experience with these types of projects. By reason of education, affiliation with a professional association, and past relevant work experience, Mr. Hoffman fulfills the requirements of Qualified Person (QP) for the purposes of SEC Regulation SK-1300 for the technical information presented in this announcement.

Christopher Gerteisen, Chief Executive Officer of Nova Minerals, is a Professional Geologist and member of Australian Institute of Geoscientists, and has supervised the preparation of this news release and has reviewed and approved the scientific and technical information contained herein. Mr. Gerteisen is a "qualified person" for the purposes of SEC Regulation S-K 1300.

Nova Minerals Limited is advancing one of the world’s largest undeveloped gold deposits into production and securing a US domestic supply of the critical mineral antimony. The Company is focused on the exploration and development of the Estelle Gold and Critical Minerals Project, located in Alaska, a tier-one mining jurisdiction.

Estelle hosts two defined multi-million-ounce gold resources, and more than 20 prospects distributed along a 35-kilometre mineralized trend, in the prolific Tintina Gold Belt, a province which hosts a >220 million ounce (Moz) documented gold endowment and some of the world's largest gold mines and discoveries including, Kinross Gold Corporation's Fort Knox Gold Mine. In parallel, Nova is advancing its critical minerals strategy, fully-funded by a US$43.4 million U.S. Department of War award to develop a domestic antimony supply chain, targeted for production in late 2026/2027.

Further discussion and analysis of the Estelle Project is available through the interactive Vrify 3D animations, presentations, and videos, all available on the Company’s website.