Mr. Dan James reports

PROSPECTIVA RESOURCES BEGINS TRADING ON THE TSX VENTURE EXCHANGE

Prospectiva Resources Ltd. has completed its qualifying transaction with Pentagon I Capital Corp., a capital pool company pursuant to the policies of the TSX Venture Exchange, previously announced on Feb. 5, 2026. The company's common shares have been approved for listing on the TSX-V and will commence trading today under the symbol PSVA at market open.

As the company enters the public markets, it is well positioned to create value via:

• A fully financed drill program commencing in early August, designed to expand the historical high-grade, near-surface copper-gold mineralization at the Sao Francisco copper-gold project; the planned drill program is designed to test newly identified electromagnetic conductors across a three-kilometre-long prospective geological and geophysical trend;
• A 100-per-cent-owned 335-square-kilometre land package, hosting a pipeline of earlier-stage regional gold targets providing additional exploration opportunities alongside the company's primary copper-gold focus;
• A disciplined exploration strategy focused on systematic exploration and target advancement, with the objective of defining a maiden mineral resource in 2027;
• An experienced leadership and technical team with a proven record of mineral discovery and project development in Brazil, a stable mining jurisdiction with established infrastructure and an efficient permitting framework.

Dan James, chief executive officer of Prospectiva, said: "Listing on the TSX Venture Exchange is a significant milestone for Prospectiva and marks the beginning of an exciting new chapter for the company. We believe Prospectiva offers investors a compelling opportunity to gain exposure to high-grade copper and gold exploration projects in one of Brazil's most prospective and underexplored mineral belts. With a fully funded maiden drill program about to commence at our flagship Sao Francisco copper-gold project, an experienced technical team and a portfolio with significant district-scale growth potential, we are well positioned to advance our exploration strategy and build long-term shareholder value."

Sao Francisco copper-gold project exploration program

The Sao Francisco copper-gold project is a 100-per-cent-owned high-grade copper-gold project acquired in early 2026 (originally a flagship grassroots discovery by Yamana Gold Inc. in 2019). Previously completed exploration work includes approximately 5,900 metres of diamond drilling and a 29-line-kilometre induced polarization (IP) survey, the latter of which was never followed up due to Yamana being acquired in 2023.

Notable Sao Francisco historical high-grade intercepts include:

• 7.50 m at 6.41 per cent Cu and 0.36 gram per tonne Au (SF_006);
• 4.91 m at 4.45 per cent Cu and 0.25 g/t Au (SF_005);
• 4.55 m at 5.81 per cent Cu and 0.48 g/t Au (SF_008);
• 7.53 m at 3.83 per cent Cu and 0.36 g/t Au (SF_012);
• 5.65 m at 1.83 per cent Cu and 0.18 g/t Au (SF_016).

Following Prospectiva's acquisition of the project, the company completed a fixed-loop electromagnetic survey (FLEM) in April, 2026, comprising four loops and approximately 74 line kilometres. The survey identified conductive responses closely associated with known near-surface copper-gold mineralization and historical IP chargeability anomalies.

Several additional conductors were identified at depth and broadly along the interpreted easterly plunge of the known mineralization. These conductors remain untested by drilling and form priority targets within Prospectiva's 2026 drill program.

Historical drilling returned high-grade, near-surface copper-gold mineralization; however, the system remains largely untested downplunge and at depth. The 2026 program is designed to test whether the newly identified conductors represent extensions of the known sulphide-bearing system or additional mineralized lenses.

The combined geological, geochemical, drilling and geophysical data sets support the interpretation of a polymetallic copper-gold-zinc system with characteristics consistent with VMS-style (volcanogenic massive sulphide) mineralization.

The program will test:

• Extensions to the known high-grade copper-gold mineralization;
• Newly modelled electromagnetic conductors;
• The continuation of the mineralized system along strike and at depth.

ServDrill has been selected as the drilling contractor and mobilized to site, with GSM Geoscience engaged to provide supporting downhole geophysical services. Core orientation and downhole electromagnetic (DHEM) surveys will be completed throughout the drilling program. Results will be reviewed as drilling progresses, allowing the geological team to refine targets and, where appropriate, adjust subsequent drill holes toward the strongest conductive responses.

Regional exploration

While the Sao Francisco copper-gold project is the company's primary focus, Prospectiva is also advancing several earlier-stage targets within its wider 100-per-cent-owned, 335-square-kilometre land package. First-pass geological reconnaissance was completed at the Pico do Jabre and Desterro gold projects, located in the state of Paraiba, approximately 30 kilometres northeast of Sao Francisco, comprising geological mapping and sampling of historical and active artisanal workings, together with reconnaissance rock samples.

The field programs confirmed the presence of structurally controlled quartz-vein gold systems at both projects. Analytical results were subsequently received for 55 reconnaissance samples collected from Pico do Jabre and Desterro with grades ranging from 9.72 g/t Au to less than 0.005 g/t Au. Eleven samples returned grades exceeding one g/t gold, with the highest results including 9.72 g/t, 6.09 g/t, 4.80 g/t, 4.58 g/t and 4.22 g/t gold.

This work is being integrated with geological mapping and structural interpretation to define priorities for follow-up exploration work, alongside additional soil sampling and target-generation work across selected targets within the wider portfolio.

Qualified person statement

The scientific and technical information contained in this press release has been reviewed and approved by Robert Selwyn, MGeol, CGeol, FGS, a qualified person as defined by National Instrument 43-101. Mr. Selwyn is a chief geologist and is a non-independent consultant to Prospectiva.

About Prospectiva Resources Ltd.

Prospectiva Resources is a Brazil-focused copper and gold exploration company advancing a district-scale portfolio of 100-per-cent-owned projects across the highly prospective but underexplored Borborema province in northeastern Brazil. The company's land package comprises 35 mineral exploration licences covering approximately 335 square kilometres across the states of Pernambuco and Paraiba, with a current focus on its flagship Sao Francisco copper-gold project.

Sao Francisco is the company's priority exploration asset. Historical drilling has tested approximately two kilometres of the prospective trend and intersected high-grade, copper-dominant mineralization at multiple locations. Geological interpretation, historical IP geophysics and Prospectiva's recent FLEM (fixed-loop electromagnetic) survey have subsequently defined a broader prospective geological and geophysical corridor extending for approximately three kilometres. The additional target areas include electromagnetic conductors at depth and broadly along the interpreted easterly plunge of the known mineralized system that have not previously been drill tested.

Prospectiva is undertaking a diamond drilling program to test newly identified electromagnetic conductors within a three-kilometre-long prospective corridor. The program forms part of the company's strategy to advance Sao Francisco toward the potential definition of an initial mineral resource in 2027.

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