Nova Minerals Quarterly Activities and Cashflow Report - 30 June 2025

15,000m drill program commenced at the Estelle
Project targeting Gold at RPM, Korbel and Antimony at Stibium

U.S. Department of Defense grant to fast-track development of the Antimony Project, at an advanced stage with the Company anticipating an update in the near term.

Melbourne, Australia, July 29, 2025 (GLOBE NEWSWIRE) -- Nova Minerals Limited (“Nova” and the “Company”) (NASDAQ: NVA) (ASX: NVA), (FRA: QM3), a gold and critical minerals exploration stage company focused on advancing the Estelle Gold and Critical Minerals Project in Alaska, U.S.A. provides its quarterly activities and cashflow report for the quarter ended June 30, 2025

Highlights

Estelle Project

• 15,000m drill program commenced across the project area in June 2025 with a focus on advancing the RPM and Korbel gold deposits toward feasibility and permitting, while also initiating a maiden resource at the Stibium prospect for both gold and antimony. With both metals trading near historic highs, the strategic significance and potential economic return of these near-surface assets underscore Nova’s planned strong growth trajectory and long term value proposition

• Gold Assets – Over 20 Prospects Advancing Including 4 Large Gold Deposits

RPM Drill Program

• 10,000-meter drill program at the RPM deposit commenced in July 2025 which is strategically designed to enhance resource definition and expand mineralization across multiple target zones. A major focus is the RPM deposit itself, where drilling will test the eastern strike extension beneath a fractured zone encountered in historic hole RPM-004, with particular emphasis on intersecting the high-grade hornfels/intrusive contact — a proven host of significant gold mineralization. Additional drilling will aim to upgrade measured and indicated resources and explore the potential of intrusive dikes to the south. The program will also target further expansion to the west, focusing again on the key contact zone within the valley (Figure 1).
• Exploration will also extend beyond the main RPM deposit. Reverse-circulation (RC) drilling is planned to the north of the RPM North deposit, where geochemical anomalies along a ridgeline suggest strong mineral potential. Another RC drill campaign will target the RPM glacial debris lobe, a highly prospective area defined by surface samples collected in 2024, which included rock grades up to 52.3 g/t Au and till samples averaging 1.1 g/t Au across 1.7 kilometers (ASX Announcement: 3 February 2025 and Figure 2). These high-grade surface expressions present a compelling opportunity for new discoveries within the broader RPM system.
• In addition to resource growth and exploration, the drill program will include the installation of hydrology wells to better understand surface and groundwater systems in the region. This work will contribute to an expanded environmental baseline and support future permitting efforts. Together, these initiatives are designed to position RPM for long-term development while unlocking additional value through resource upgrades, discovery drilling, and critical pre-feasibility infrastructure.

Korbel Drill Program

• ~2,000m of drilling at Korbel will target a potential higher-grade starter pit at Korbel Main, with flexibility to expand into other high-priority targets within the broader valley (Figure 5).

Surface Sampling Program

• A comprehensive regional surface exploration program is underway alongside drilling at the Estelle Project, aimed at identifying and advancing new high-priority prospects to drive future resource growth. Field teams are conducting geological mapping, geochemical sampling, and target delineation across key areas, including expanded coverage north of Korbel, denser sampling between Portage Pass and Tomahawk, and follow-up work at West Wing, Styx, and the greater Train area (Figure 6). These zones, particularly near the intrusive/hornfels contacts, offer strong potential for new mineralization, while infill sampling at RPM and Styx will further refine existing targets and support ongoing exploration success.

• Antimony Assets – 7 Gold-Antimony Prospects with U.S. Grant Applications Advanced

Stibium Antimony-Gold Drill Program

• Approximately 3,000m of drilling commenced at the Stibium prospect in June 2025, targeting the establishment of a maiden mineral resource estimate for both gold and antimony. Surface sampling has defined a substantial mineralised zone, approximately 800m long and 400m wide, with high impact results including (ASX Announcement: 14 January 2025 and Figures 3 and 4):

• • • 12 rock samples > 30% Sb with a high of 60.5% Sb
    • 10 soil samples > 0.1% Sb with a high of 2.8% Sb
    • 16 rock samples > 5 g/t Au with a high of 141 g/t Au
    • 35 soil samples > 1 g/t Au with a high of 25.6 g/t Au

Nova’s U.S. Department of Defense Grant Application at an Advanced Stage

• Nova’s application for potential U.S. Department of Defense (DoD) funding—designed to fast-track the development of a mineral resource estimate, processing, refining, and eventual antimony production at Estelle—progressed significantly during the quarter and is now in its final stages. We anticipate receiving an update in the near term.
• A successful outcome would enable the Company to expand its 2025 drilling program by deploying additional diamond drill rigs, allowing for extended drilling at the Stibium prospect and initial testing at the highly prospective Styx target.
• Notably, peer companies such as MP Materials (NYSE: MP with a market capitalization of ~A$17.5 billion at 30 June 2025) and Perpetua Resources (NASDAQ: PPTA with a market capitalization of ~A$2.18 billion at 30 June 2025) have already secured DoD funding, highlighting the program’s potential to support strategic mineral development.

Corporate

• At the end of the June 2025 quarter, Nova had A$9.08 million in cash, and no debt. The above cash balance excludes the US$12.1 million (A$18.4 million) raised in the subsequent July 2025 U.S. offering as described below.
• In July 2025 the Company subsequently raised a total of US$12.1 million (A$18.4 million) before costs through a U.S offering, for drilling and exploration programs, feasibility studies, and general working capital.
• On 24 June 2025 the Company announced the appointment of Mr. Chaim (Dovi) Berger as an Independent Non-Executive Director with effect from 1 July 2025. Mr. Berger is a U.S.-based attorney and CPA with over a decade of experience in corporate law, finance, and M&A, known for executing complex transactions, leading high-growth operations, and implementing strategic financial and compliance controls. Mr. Berger has been appointed to the Audit & Risk Committee and the Remuneration & Nomination Committee.
• Notable investing and operating cash flow items during the quarter included: A$1.9M exploration and evaluation costs, principally related to drilling, the PFS test work, mining and environmental studies, sample analysis, and camp running costs, A$432k administration and corporate expenses, the majority of which are related to marketing and share registry costs, and A$797k for professional fees related mainly to investor relations and consulting and advice in respect of the antimony grant.
• Payments to related parties in Q4 FY25 were A$262K and included CEO and Executive remuneration and non-executive director fees.

Next Steps

• Potentially secure U.S. Department of Defense funding for antimony supply
• Material PFS test work results and trade-off studies as they become available
• Metallurgical test work ongoing
• Environmental test work ongoing
• West Susitna Access Road updates
• Infrastructure permitting
• 2025 drilling and surface exploration program results
• Updated Mineral Resource Estimate (MRE) to both JORC and S-K 1300 standards for gold and antimony

Figure 1. 2025 drill target areas at/near the RPM deposit

Figure 2. 2025 exploration drill targets outside the main RPM deposit zone

Figure 3. Gold soils heat map highlighting resource drill targets

Figure 4. Antimony soils heat map highlighting resource drill targets

Figure 5. Map of the Korbel Valley area showing potential 2025 drill targets

Figure 6. Map of the Estelle project highlighting areas for surface sampling work in 2025

New Videos Released on the Company’s Website During the June 2025 Quarter

• Redchip Undiscovered Gems - Nova Minerals
• Redchip Nova Minerals investor update webinar - April 2025
• John Feneck & Don Durrett Discuss Gold, Tariffs, & Crypto; Interview with Nova Minerals ($NVA)
• Nova Minerals CEO, Christopher Gerteisen talks at the Emerging Growth Conference in April 2025

Major ASX Announcements During the June 2025 Quarter

• 30 May 2025 - Estelle 15,000m Exploration and Project Advancement Plan
• 11 June 2025 - Antimony-Gold Drilling Commenced at Stibium  
• 14 January 2025 - Appointment of Non-executive Director

Top 20 Shareholders as at 25 July 2025

1 HSBC Custody Nominees (Australia) Limited includes the fully paid shares issued to the depositary agent, which underlie the NASDAQ listed ADS’s.

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.

www.novaminerals.com.au

This announcement has been authorized for release by the Executive Directors.

About Nova Minerals Limited

Nova Minerals Limited is a Gold, Antimony and Critical Minerals exploration and development company focused on advancing the Estelle Project, comprised of 514 km² of State of Alaska mining claims, which contains multiple mining complexes across a 35 km long mineralized corridor of over 20 advanced Gold and Antimony prospects, including two already defined multi-million ounce resources, and several drill ready Antimony prospects with massive outcropping stibnite vein systems observed at surface. The 85% owned project is located 150 km northwest of Anchorage, Alaska, USA, 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, Nova Gold and Paulson Advisors Donlin Creek Gold Project and Kinross Gold Corporation's Fort Knox Gold Mine. The belt also hosts significant Antimony deposits and was a historical North American Antimony producer.

Competent Person Statements

Mr Vannu Khounphakdee P.Geo., who is an independent consulting geologist of a number of mineral exploration and development companies, reviewed and approves the technical information in this release and is a member of the Australian Institute of Geoscientists (AIG), which is ROPO accepted for the purpose of reporting in accordance with ASX listing rules. Mr Vannu Khounphakdee has sufficient experience relevant to the gold deposits under evaluation to qualify as a Competent Person as defined in the 2012 edition of the ‘Australian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Vannu Khounphakdee is also a Qualified Person as defined by S-K 1300 rules for mineral deposit disclosure. Mr Vannu Khounphakdee consents to the inclusion in the report of the matters based on information in the form and context in which it appears.

The information in the announcement dated today that relates to exploration results and exploration targets is based on information compiled by Mr. Hans Hoffman. Mr. Hoffman, Owner of First Tracks Exploration, LLC, who is providing geologic consulting services to Nova Minerals, compiled the technical information in this release and is a member of the American Institute of Professional Geologists (AIPG), which is ROPO, accepted for the purpose of reporting in accordance with ASX listing rules. Mr. Hoffman has sufficient experience relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to 9qualify as a Competent Person as defined in the 2012 edition of the ‘Australian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr. Hoffman consents to the inclusion in the report of the matters based on information in the form and context in which it appears.

The Exploration results were reported in accordance with Clause 18 of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (2012 Edition) (JORC Code).

The Company is also listed on the NASDAQ in the United States and, as a result, is required in respect of its exploration and resource reporting to comply with the US Securities and Exchange Commission (SEC) requirements in respect of resource reporting in the USA. This requires compliance with the SEC’s S-K 1300 resource regulations. Investors accessing the Company’s NASDAQ press releases should be aware that S-K 1300 statements made in those releases are not JORC Code compliant statements.

Nova Minerals confirms that it is not aware of any new information or data that materially affects the information included in the relevant market announcements, and in the case of the exploration results, that all material assumptions and technical parameters underpinning the results in the relevant market announcement continue to apply and have not materially changed.

Forward-looking Statements and Disclaimers

This news release contains “forward-looking information” within the meaning of applicable securities laws. Generally, any statements that are not historical facts may contain forward-looking information, and forward looking information can be identified by the use of forward-looking terminology such as “plans”, “expects” or “does not expect”, “is expected”, “budget” “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or variations of such words and phrases or indicates that certain actions, events or results “may”, “could”, “would”, “might” or “will be” taken, “occur” or “be achieved.” Forward-looking information is based on certain factors and assumptions management believes to be reasonable at the time such statements are made, including but not limited to, continued exploration activities, Gold and other metal prices, the estimation of initial and sustaining capital requirements, the estimation of labour costs, the estimation of mineral reserves and resources, assumptions with respect to currency fluctuations, the timing and amount of future exploration and development expenditures, receipt of required regulatory approvals, the availability of necessary financing for the Project, permitting and such other assumptions and factors as set out herein. apparent inconsistencies in the figures shown in the MRE are due to rounding

Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: risks related to changes in Gold prices; sources and cost of power and water for the Project; the estimation of initial capital requirements; the lack of historical operations; the estimation of labour costs; general global markets and economic conditions; risks associated with exploration of mineral deposits; the estimation of initial targeted mineral resource tonnage and grade for the Project; risks associated with uninsurable risks arising during the course of exploration; risks associated with currency fluctuations; environmental risks; competition faced in securing experienced personnel; access to adequate infrastructure to support exploration activities; risks associated with changes in the mining regulatory regime governing the Company and the Project; completion of the environmental assessment process; risks related to regulatory and permitting delays; risks related to potential conflicts of interest; the reliance on key personnel; financing, capitalisation and liquidity risks including the risk that the financing necessary to fund continued exploration and development activities at the Project may not be available on satisfactory terms, or at all; the risk of potential dilution through the issuance of additional common shares of the Company; the risk of litigation.

Although the Company has attempted to identify important factors that cause results not to be as anticipated, estimated or intended, there can be no assurance that such forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. Forward looking information is made as of the date of this announcement and the Company does not undertake to update or revise any forward-looking information this is included herein, except in accordance with applicable securities laws.

Tenement Holdings as at 30 June 2025

A list of Nova’s Tenement Holdings, as at the end of the Quarter, is presented in the schedules below, with additional notes.

Appendix 5B

Mining exploration entity or oil and gas exploration entity quarterly cash flow report

Note: if any amounts are shown in items 6.1 or 6.2, your quarterly activity report must include a description of, and an explanation for, such payments.

Note: if the entity has reported positive relevant outgoings (ie a net cash inflow) in item 8.3, answer item 8.7 as “N/A”. Otherwise, a figure for the estimated quarters of funding available must be included in item 8.7.

Note: where item 8.7 is less than 2 quarters, all of questions 8.8.1, 8.8.2 and 8.8.3 above must be answered.

Compliance statement

Notes