*1.15 g/t AuEQ (0.91 g/t Au, 3.23 g/t Ag, 0.13 % Cu), Including 3.84 g/t AuEQ (3.21 g/t Au, 9.76 g/t Ag, 0.34 % Cu) Over 5 m

Troilus Mining Corp. (TSX: TLG) (OTCQX: CHXMF) (FSE: CM5) is pleased to announce results from the Connector Zone as part of its ongoing 2026 Exploration Program (see March 31, 2026 press release) at its Troilus Project located in north-central Quebec, Canada.

The now completed Connector drill program was designed to support mine plan optimization by targeting inferred mineralization within the reserve pit areas and testing up-plunge extensions of previously identified high-grade trends between the formerly mined Z87 and J open pits. The latest results continue to demonstrate the presence of higher-grade mineralization within the Connector area and support the Company’s objective of evaluating opportunities to improve future mine planning, including potential resource conversion, pit sequencing, strip ratio optimization and early-year mill feed.

Connector Intercept Highlights (see Figure 1):

• Hole J-26-359 intersected 1.15 g/t gold equivalent (0.91 g/t Au, 3.23 g/t Ag, 0.13 % Cu) over 37 m, including 3.84 g/t AuEQ (3.21 g/t Au, 9.76 g/t Ag, 0.34 % Cu) over 5 m starting at 66 m downhole.
• Hole J-26-360 intersected 0.78 g/t gold equivalent (0.67 g/t Au, 1.21 g/t Ag, 0.06 % Cu) over 54 m, including 3.03 g/t AuEQ (2.60 g/t Au, 5.5 g/t Ag, 0.24 % Cu) over 3.9 m and also including 2.02 g/t AuEQ (1.85 g/t Au, 2.28 g/t Ag, 0.10 % Cu) over 6 m starting at 72 m downhole.
• Hole J-26-351 intersected 1.23 g/t gold equivalent (1.08 g/t Au, 1.59 g/t Ag, 0.09 % Cu) over 28.7 m, including 25.53 g/t AuEQ (25.30 g/t Au, 10.10 g/t Ag, 0.08 % Cu) over 1 m and also including 4.78 g/t AuEQ (2.68 g/t Au, 16.80 g/t Ag, 1.26 % Cu) over 1 m starting at 26.3 m downhole.

Justin Reid, CEO of Troilus, commented, “The Connector Zone continues to demonstrate the value of targeted drilling within and around the current reserve pit designs. This program was designed with a very specific mine-plan optimization objective: to test high-grade extensions toward surface and support the conversion of inferred material within the pit areas to the indicated category. For a large-scale 50,000 tonne-per-day operation, upgrading material that is currently classified as inferred and therefore treated as waste for reserve mine-planning purposes could be important for future sequencing, reduced strip ratio and early-year mill feed. The latest results are encouraging not only because they continue to demonstrate high grades and continuity in the Connector area, but because they are located in a part of the deposit that is planned for early-stage mining activities.”

The Connector Zone has been a priority near-mine target since high-grade mineralization was first identified between the Z87 and J pits in 2022, with subsequent drilling in 2023 further demonstrating continuity along shallow high-grade structural trends. The 2026 program was designed to build on this work by targeting mineralization in areas already incorporated into the current mine plan, where successful upgrading of inferred material could positively impact future project economics.

All grades are uncut, and true thicknesses are approximately 75% to 90% of drilled length.

*The completed NI 43-101 technical report associated with the Troilus Project FS can be found on SEDAR+ at www.sedarplus.ca under the Company’s issuer profile or on the Company’s website at www.troilusgold.com

Figure 1. Plan map with the reported drill hole locations from Connector Zone

Connector Drilling

Drillholes J-26-359 and J-26-360 targeted a high-grade surface extension that had not been fully tested in previous drill campaigns. Hole J-26-359 returned 1.15 g/t AuEq over 37 metres, including 3.84 g/t AuEq over 5 metres, while hole J-26-360 returned 0.78 g/t AuEq over 54 metres, including 3.03 g/t AuEq over 3.9 metres and 2.02 g/t AuEq over 6 metres. These results are expected to support grade continuity within an area already largely classified as indicated in the current block model.

Mineralization is hosted within a strongly deformed intermediate volcanic breccia, exhibiting strong albite, sericite and silica alteration with disseminated pyrite and chalcopyrite. Higher-grade intervals are commonly associated with discordant pyrite veins typical of the Connector area.

Drillhole J-26-351 returned 1.23 g/t AuEq over 28.7 metres, including 25.53 g/t AuEq over 1 metre and 4.78 g/t AuEq over 1 metre, beginning at 26.3 metres downhole. This hole targeted an area currently comprised entirely of inferred material in the block model. Drillhole J-26-349 also returned 0.75 g/t AuEq over 35 metres, including 1.93 g/t AuEq over 7 metres, from the same inferred zone.

Because only measured and indicated mineral resources can be considered for conversion into mineral reserves, inferred material within the current reserve pit design is treated as waste in the mine plan. Targeted drilling that supports the conversion of inferred material to the indicated category has the potential to improve the strip ratio and help achieve mill throughput rates during the critical early years of production.

Table 1. Connector Drill Results

* AuEq = Au grade + 1.5107 * Cu grade + 0.0119 * Ag grade

Quality Assurance and Control

During the drill program, one meter assay samples were taken from NQ core and sawed in half. One-half was sent for assaying at ALS Laboratory in Sudbury, Ontario, a certified commercial laboratory, and the other half was retained for results, cross checks, and future reference. A strict QA/QC program was applied to all samples; which included insertion of one certified mineralized standard and one blank sample in each batch of 25 samples. Every sample was processed with standard crushing to 85% passing 75 microns on 500 g splits. Samples were assayed by one-AT (30 g) fire assay with an AA finish and if results were higher than 3.5 g/t Au, assays were redone with a gravimetric finish. For QA/QC samples, a 50 g fire assay was done. In addition to gold, ALS laboratory carried out multi-element analysis for ME-ICP61 analysis of 33 elements four acid ICP-AES.

Qualified Person

The technical and scientific information in this press release has been reviewed and approved by Nicolas Guest, P.Geo., Exploration Manager, who is a Qualified Person as defined by NI 43-101. Mr. Guest is an employee of Troilus and is not independent of the Company under NI 43-101.

AuEq Disclosure

The formulas used to calculate equivalent values for resources are as follows, for 87 Pit AuEq = Au + 1.5628*Cu +0.0128 *Ag, for J Pit AuEq = Au + 1.5107*Cu +0.0119 *Ag, for SW Pit AuEq = Au + 1.6823*Cu +0.0124 *Ag, for X22 Pit AuEq = Au + 1.5628*Cu +0.0128 *Ag. AuEq was calculated using metal prices of $1,850/oz Au; $4.25/lb Cu and $23.00/oz Ag and recoveries of 93.1% for Au, 88.9% for Ag and 89.3% for Cu in the J pit, 95.5% for Au, 98.2% for Ag and 94.7% for Cu in the 87 pit, 85.7% for Au, 85.6% for Ag and 91.5% for Cu in the SW pit and 95.5 % for Au, 98.2% for Ag and 94.7% for Cu in the X22 pit.

About Troilus Mining Corp.

Troilus Mining Corp. is a Canadian development-stage mining company focused on the systematic advancement of the former gold and copper Troilus Mine towards production. Troilus is located in the tier-one mining jurisdiction of Quebec, Canada, where it holds a large land position of 435 km² in the Frôtet-Evans Greenstone Belt. A Feasibility Study completed in May 2024 supports a large-scale 22-year, 50ktpd open-pit mining operation, positioning it as a cornerstone project in North America.