HM Exploration Provides Program Update for the Lewis Pilley’s Project

Vancouver, September 25, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to provide an update on the recent exploration programs conducted at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. The DGI televiewer survey was completed in late July. HM Exploration has received the final structural data and is incorporating it into its geological model. The Crone electromagnetic (“EM”) survey was completed in mid-September. Crone also conducted a pilot surface EM survey across known mineralization exposed in a trench at the Clifford Jones (Bull Road) Zone to assess the technique’s potential for identifying additional mineralization elsewhere on the Project. The Company is awaiting the final report. For both surveys eleven of the twelve drill holes were surveyed; one hole could not be surveyed due to collapse. HM Exploration is approved to conduct Phase 2 drilling at the Project, with drilling anticipated to begin in early to mid-November. The Company will use its interpretation of the televiewer and EM data to plan the next phase of drilling. “The televiewer data is helping us refine our understanding of the structures that control mineralization at Lewis Pilley’s,” said Nick Rodway, CEO of HM Exploration. “Once we receive the final EM report, we will bring both datasets together to prioritize targets for our planned November drill program. The pilot surface survey will also help us assess whether EM can guide exploration beyond the areas we have already drilled.” Figure 1: Plan map showing the drill holes surveyed with Borehole EM + Televiewer. Yellow line indicated the ‘Test’ line for surface EM. Televiewer Program (OTV / ATV) Televiewers produce accurate and consistent oriented images of drill holes, allowing in situ structural measurements of both planar and linear geological features. Data can be visualized as 3D “virtual core” or as 2D “unwrapped core,” and structures can be measured very rapidly. Data is catalogued automatically and ready to import into 3D modelling programs. Common features analyzed include veins, contacts, bedding/foliation, fractures/joints, faults, fold limbs and hinges (https://www.dgigeoscience.com/imaging/). About the TDEM Surveys Time-Domain Electromagnetics (“TDEM”) is a proven geophysical technique widely used in mineral exploration to identify and characterize electrically conductive zones in the subsurface. In VMS exploration, TDEM is particularly effective because many volcanogenic massive sulphide deposits contain significant concentrations of conductive sulphide minerals, which can produce a measurable electromagnetic response. By transmitting an electromagnetic signal into the ground and measuring the resulting decay response, TDEM surveys, such as Crone’s Pulse-EM system can help identify conductive anomalies that may represent massive sulphide mineralization and can provide information on their size, geometry, depth and continuity. When integrated with geological mapping, geochemistry, drilling and other geophysical data, TDEM can be an effective tool for prioritizing exploration targets and refining drill programs, potentially improving the efficiency and success of mineral exploration. About Lewis Pilley’s Project The Project is road accessible and situated approximately twenty-five (25) km east of the town of Springdale, approximately fifty-five (55) km southeast of Firefly Metals’ Green Bay Project and approximately one hundred fifty (150) km from the Pine Cove Mill and Port by way of major roads. The Project has a long history of mining and exploration dating back to the late 1800s when the Pilley’s Island Pyrite Company Ltd. produced approximately 450,000 tonnes of massive pyritic ore from the Pilley’s Island Mine-Old Mines (after Kerr, 1996). The Project hosts a cluster of VMS systems and prospects with demonstrated high-grade Zn-Pb-Cu-Ag+/-Au intersections. Mineralization is typical bimodal-felsic VMS, with both massive sulphide and sulphide-clast breccias (Thurlow, 1996). The geological setting is directly analogous to the Buchans camp (Thurlow, 1996), and the presence of sulphide-clast breccias is a strong vector toward proximal massive sulphide lenses. Most of the historic showings that fall within the extents of the Project have not seen systematic exploration. Many of the historic drill holes were shallow and drilled in a vertical orientation limiting the geological knowledge of the extents of the underlying lithology and mineralization. Work is being planned to validate historic assay results as well as collect new data from the 3B-Zone, Clifford Jones (Bull Road) Extension, Bouzanne Shaft, Henderson, Mansfield and Pilley’s Cove Showings. Board and Audit Committee Update The Company announces that Alan Yi Hsiu Lu has resigned from the board of directors (the “Board”) and as a member of the Audit Committee, effective September 24, 2026. The Board thanks Mr. Lu for his service and contributions to the Company and wishes him well in his future endeavors. The Board has appointed Nicholas Rodway, a director and the Company’s Chief Executive Officer, to serve on the Audit Committee on an interim basis. The Company intends to appoint an independent director to the Audit Committee within the period prescribed by applicable securities laws (the “Appointment”). National Instrument 43-101 Disclosure Nicholas Rodway, P.Geo, (Licence No. 46541) (Permit to Practice No. 1000359) is CEO and Director of the Company, and a qualified person as defined by National Instrument 43-101- Standards of Disclosure for Mineral Projects. Mr. Rodway has supervised the preparation of, and verified and approved the technical content in this news release. References Dunning, G.R., Kean, B.F., Thurlow, J.G and Swinden, H.S. (1987): Geochronology of the Buchans, Roberts Arm and Victoria Lake Groups and Mansfield Cove Complex, Newfoundland. Canadian Journal of Earth Sciences, Volume 24, pages 1175-1184.Kerr, A. (1996) New perspectives on the stratigraphy, volcanology, and structure of the island-arc volcanic rocks in the Ordovician Roberts Arm Group, Notre Dame Bay. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 283-310.Thurlow, J.G (1996): Geology of a newly discovered cluster of blind massive sulphide deposits, Pilley’s Island, central Newfoundland. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 181- 189. Thurlow, J.G (2010): Great Mining Camps of Canada 3., The History and Geology of the Buchans Mine, Newfoundland and Labrador About HM Exploration Corp. The Company is currently advancing its Lewis Pilley’s Project located in Newfoundland. The Project encompasses a land area of ~60.25 km²

HM Exploration Announces DTC Eligibility of Its Common Shares in the United States

Vancouver, August 20, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM) (FSE:X5H) (OTCQB:HMEXF) is pleased to announce that its common shares are now eligible for electronic clearing and settlement in the United States through The Depository Trust Company (“DTC”). The Company’s common shares trade on the OTCQB Venture Market under the symbol “HMEXF”. “DTC eligibility removes a key point of friction for U.S. investors seeking exposure to HM Exploration and our Lewis Pilley’s Project,” said Nick Rodway, President and CEO of HM Exploration. “With all twelve Phase One drill holes now reported, two stacked massive sulphide lenses confirmed through drilling and assay results, and a Phase Two program planned for this fall, this milestone comes at the right time. Our common shares now trade in Canada on the CSE, in the United States on the OTCQB and in Germany on the Frankfurt Stock Exchange, providing investors in North America and Europe with more efficient access as we advance the Lewis Pilley’s Project.” DTC is a subsidiary of The Depository Trust & Clearing Corporation and manages the electronic clearing and settlement of publicly traded securities in the United States. Securities that can be cleared and settled electronically through DTC are considered “DTC eligible”. DTC eligibility facilitates the electronic clearing and settlement of the Company’s common shares in the United States and may reduce costs and administrative delays associated with trading the shares. The Company expects DTC eligibility to improve the accessibility of its common shares for U.S. investors and support increased liquidity over time. Together with the Company’s OTCQB quotation and Frankfurt Stock Exchange listing, DTC eligibility supports HM’s objective of broadening its shareholder base and increasing its visibility in the world’s largest capital market. National Instrument 43-101 Disclosure Nicholas Rodway, P.Geo. (Licence No. 46541; Permit to Practice No. 1000359), is CEO and a Director of the Company and a qualified person as defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Rodway has reviewed, verified and approved the technical content of this news release. About HM Exploration Corp. The Company is currently advancing its Lewis Pilley’s Project located in Newfoundland. The Project encompasses a land area of ~60.25 km². In addition, the Company holds a 100% interest in the Devil’s Den Project, an exploration-stage project consisting of two contiguous mineral licences encompassing ~3,200 hectares located west of Port Alberni, Vancouver Island, British Columbia. HM Exploration is committed to applying modern exploration techniques across its projects to unlock value in historically underexplored Canadian mining districts. On Behalf of the Board of Directors HM EXPLORATION CORP. “Nicholas Rodway” President & CEO Tel: 604.681.1568info@hmexploration.com Forward-Looking Statements This news release contains “forward-looking information” within the meaning of applicable Canadian securities laws, including statements regarding the anticipated benefits of DTC eligibility; the potential for improved trading accessibility and liquidity in the Company’s common shares; the Company’s objective of broadening its shareholder base and increasing its capital markets visibility; and the timing and completion of the Company’s planned Phase Two exploration program. Forward-looking information is based on management’s reasonable assumptions and expectations as of the date of this news release, including assumptions regarding continued DTC eligibility, investor and brokerage access to the Company’s common shares, market conditions, the availability of financing and the Company’s ability to carry out its planned exploration activities. Forward-looking information is subject to known and unknown risks and uncertainties that may cause actual results to differ materially, including the possibility that DTC eligibility will not increase liquidity or trading activity; changes in capital and commodity markets; the availability of financing; delays in exploration activities; and the inherent risks associated with mineral exploration. Readers are cautioned not to place undue reliance on forward-looking information. The Company undertakes no obligation to update such information except as required by applicable law. The Canadian Securities Exchange (CSE) does not accept responsibility for the adequacy or accuracy of this release. adequacy or accuracy of this release.

HM Exploration Commences Borehole & Surface EM Surveys at Lewis Pilley’s

Vancouver, August 17, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce it has contracted Crone Geophysics (”Crone”) and commenced borehole and surface Time-Domain Electromagnetic (TDEM) surveys (collectively the “Surveys”) at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. “The ongoing EM surveys will be instrumental in refining targets for our Phase Two drill program,” said Nick Rodway, President and CEO of HM Exploration. “Phase One drilling confirmed continuity within both the Upper and Lower lenses. The borehole and surface EM data will help us evaluate their potential extensions and identify additional conductive targets that may represent massive sulphide mineralization. We look forward to reporting the results once the surveys and interpretation are complete.” Highlights: About the TDEM Surveys Crone Geophysics is actively conducting borehole TDEM surveys in drill holes from the Phase One drill program completed in May 2026 at the Clifford Jones (Bull Road) Zone. Upon completion of the borehole surveys, Crone will then execute a surface survey consisting of approximately 13-line kilometres covering approximately one square kilometre encompassing and expanding on ground surrounding the Phase One drill holes (Figure 1). Time-Domain Electromagnetics (TDEM) is a proven geophysical technique widely used in mineral exploration to identify and characterize electrically conductive zones in the subsurface. In VMS exploration, TDEM is particularly effective because many volcanogenic massive sulphide deposits contain significant concentrations of conductive sulphide minerals, which can produce a measurable electromagnetic response. By transmitting an electromagnetic signal into the ground and measuring the resulting decay response, TDEM surveys, such as Crone’s Pulse-EM system (Figure 2), can help identify conductive anomalies that may represent massive sulphide mineralization and can provide information on their size, geometry, depth and continuity. When integrated with geological mapping, geochemistry, drilling and other geophysical data, TDEM can be an effective tool for prioritizing exploration targets and refining drill programs, potentially improving the efficiency and success of mineral exploration. Figure 1: Overview map of the Time-Domain Electromagnetics (TDEM) survey area at the Lewis Pilley’s Project. Figure 2: Crone Geophysics personnel conducting borehole TDEM survey on drill hole PI-26-001 at the Clifford Jones (Bull Road) Zone. Geology & Mineralization The Project is located within the Notre Dame Subzone of the Dunnage Tectonostratigraphic Zone. Of note, most of the Project is underlain by Ordovician submarine volcanic rocks of the Roberts Arm Group which is regionally identified as part of a mature arc sequence referred to as the Buchans-Roberts Arm Belt that also hosts the historic Buchans mine (after Dunning et al., 1987). Mineralization occurs as lower grade (Spencer’s Dock); medium grade (Old Mines); and high grade (3B-Zone/Clifford Jones) deposits that are of both sub-seafloor replacement and exhalative varieties. The deposits are often flanked by extensive chlorite, sericite, silica, K-feldspar and epidote alteration often observed in bimodal-felsic VMS systems. The Spencer’s Dock area displays sericite/silica alteration that generally increases in intensity near mineralized zones, while the 3B/Old Mine areas display sericite/silica alteration that is abundant but less widespread and is more intense when proximal to mineralized zones (after Kerr, 1996). VMS deposits are a globally significant source of copper, zinc, lead, silver, and gold. The Project’s geology shares key characteristics with known VMS districts in Newfoundland, including the past producing Buchans, Ming and Rambler Mines, supporting the exploration potential of the Project. About Lewis Pilley’s Project The Project is road accessible and situated approximately twenty-five (25) km east of the town of Springdale, approximately fifty-five (55) km southeast of Firefly Metals’ Green Bay Project and approximately one hundred fifty (150) km from the Pine Cove Mill and Port by way of major roads. The Project has a long history of mining and exploration dating back to the late 1800s when the Pilley’s Island Pyrite Company Ltd. produced approximately 450,000 tonnes of massive pyritic ore from the Pilley’s Island Mine-Old Mines (after Kerr, 1996). The Project hosts a cluster of VMS systems and prospects with demonstrated high-grade Zn-Pb-Cu-Ag+/-Au intersections. Mineralization is typical bimodal-felsic VMS, with both massive sulphide and sulphide-clast breccias (Thurlow, 1996). The geological setting is directly analogous to the Buchans camp (Thurlow, 1996), and the presence of sulphide-clast breccias is a strong vector toward proximal massive sulphide lenses. Most of the historic showings that fall within the extents of the Project have not seen systematic exploration. Many of the historic drill holes were shallow and drilled in a vertical orientation limiting the geological knowledge of the extents of the underlying lithology and mineralization. Work is being planned to validate historic assay results as well as collect new data from the 3B-Zone, Clifford Jones (Bull Road) Extension, Bouzanne Shaft, Henderson, Mansfield and Pilley’s Cove Showings. National Instrument 43-101 Disclosure Nicholas Rodway, P.Geo, (Licence No. 46541) (Permit to Practice No. 1000359) is CEO and Director of the Company, and a qualified person as defined by National Instrument 43-101- Standards of Disclosure for Mineral Projects. Mr. Rodway has supervised the preparation of and verified and approved the technical content in this news release. Verification included a review of the survey methodology, contractor information, drill hole locations and relevant geological and drilling data. References Dunning, G.R., Kean, B.F., Thurlow, J.G and Swinden, H.S. (1987): Geochronology of the Buchans, Roberts Arm and Victoria Lake Groups and Mansfield Cove Complex, Newfoundland. Canadian Journal of Earth Sciences, Volume 24, pages 1175-1184.Kerr, A. (1996) New perspectives on the stratigraphy, volcanology, and structure of the island-arc volcanic rocks in the Ordovician Roberts Arm Group, Notre Dame Bay. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 283-310.Thurlow, J.G (1996): Geology of a newly discovered cluster of blind massive sulphide deposits, Pilley’s Island, central Newfoundland. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 181- 189. About HM Exploration Corp. The Company is currently advancing its Lewis Pilley’s Project located in Newfoundland. The Project encompasses a land area of ~60.25 km² and hosts a cluster of volcanogenic massive sulphide (VMS) systems and the historic Pilley’s Island Mine (~450,000 tonnes of ore

HM Exploration Drills 18.45 Metres of 1.14% Cu, 2.42% Zn, 16.74 g/t Ag and 0.32 g/t Au in Upper Lens; 5.42m of 1.99% Cu, 1.66% Zn, 15.49 g/t Ag and 0.8 g/t Au in Lower Lens at Lewis Pilley’s

Vancouver, August 4, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce the remaining assay results from the Company’s Phase One drilling program (the “Program”) at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. Assay results in this release cover drill holes eight (8) to twelve (12). “The remaining Phase One assay results demonstrate consistent polymetallic grades across meaningful widths,” said Nick Rodway, CEO of HM Exploration. “Both the upper and lower lenses continue to demonstrate continuity and remain open for expansion. Individual sample intervals in the upper lens returned grades of up to 8.14% copper and 27.3% zinc, while the lower lens returned up to 149 g/t silver and 10.23 g/t gold. The fact that we’re getting these grades means there’s a bigger system capable of producing exceptional grade somewhere nearby. Our goal is to follow these clues back to where all that metal originated, which could be the high-grade core of the system. These results are not just about what we have now, but about where we’re heading next. We look forward to completing the planned EM surveys, which will help refine targets for Phase Two drilling.” Highlights: PI-26-008* Upper Lens Lower Lens PI-26-009* Upper Lens Lower Lens PI-26-010* Lower Lens * All reported intervals represent drilled lengths. True widths of the mineralized intersections are currently unknown. The 2026 Phase One drilling Program was focused on evaluating the continuity of the mineralized system below known surface showings and along strike of the Clifford Jones (Bull Road) Zone (the “Zone”) to improve the Company’s understanding of the geological controls on mineralization (Figure 1). Assay results from drill holes eight (8), nine (9), and ten (10) continue to show significant polymetallic mineralization in both the upper and lower sulphide lenses (Figure 2). The upper targeted copper-bearing debris flow is currently continuous over an approximate strike length of 145 metres, and the lower mineralized sulphide lens is currently continuous over an approximate strike length of 40 metres. Both mineralized horizons remain open along strike and down dip. While holes eleven (11) and twelve (12) did not intersect as notable mineralization, they have intersected disseminated mineralization straddling the continuation of the trend. These two drill holes, coupled with the upcoming EM surveys, will help provide the geological information required to determine where to drill next in Phase Two. The mineralization from the upper zone is characterized by semi-massive to massive fragments of sulphide that have been fractured, transported, and chaotically mixed with varying types of volcanic rock. The fragments range from rounded to angular, possibly indicating multiple phases of transportation and reworking of these fragments through moderate to distal transport from the original deposition site. The mineralization from the lower zone is characterized by more massive and coherent fragments of sulphide with less rounding and fracturing than observed in the upper zone. The relatively intact nature of these fragments provides evidence that the new lower mineralized sulphide lens may represent debris deposited closer to the original hydrothermal vent system. Oblique views of drill holes seven (7), eight (8), nine (9), and ten (10) are presented in Figures 3 – 5 illustrating select corresponding drill core photos of the upper and lower mineralized lenses. With all assay results now received from the Phase One drill program it appears that multiple stacked sulphide lenses are present within the Project’s Volcanogenic Massive Sulphide (“VMS”) system (Figure 6). Geological interpretation is ongoing and will incorporate results from the recently completed televiewer survey once the processed data are received. Significant assay results from holes eight (8) to twelve (12) are summarized in Table 1 and drill collar data can be found in Table 2. Table 1: Significant assays from Phase One drilling Program at the Clifford Jones (Bull Road) Zone. Clifford Jones (Bull Road) Zone – Significant Assays Hole ID From (m) To (m) Length (m) Cu % Pb % Zn % Ag g/t Au g/t PI-26-008 7.55 26.00 18.45 1.14 0.34 2.42 16.74 0.32 Incl. 7.55 11.21 3.66 1.54 0.52 2.87 20.49 0.41 Incl. 16.26 17.19 0.93 2.57 1.50 5.84 63.40 0.84 Incl. 18.92 19.63 0.71 2.25 2.27 27.30 102.00 2.42 Incl. 23.40 25.35 1.95 4.74 0.27 2.54 36.94 0.53 Incl. 23.40 23.90 0.50 7.87 0.20 2.99 83.00 0.95 Incl. 24.30 24.87 0.57 8.14 0.40 3.82 38.80 0.70 And 149.96 152.05 2.09 0.37 0.16 0.42 3.72 0.15 And 163.45 169.77 6.32 0.91 0.79 2.37 29.30 1.63 Incl. 163.45 165.66 2.21 1.06 2.06 4.72 71.27 4.23 Incl. 163.45 164.27 0.82 0.72 4.29 10.90 149.00 10.23 Incl. 168.55 169.77 1.22 2.44 0.27 2.85 17.49 0.60 PI-26-009 15.75 23.32 7.57 1.95 0.38 2.89 17.10 0.31 Incl. 17.12 22.00 4.88 2.85 0.51 4.03 24.65 0.43 And 155.62 159.00 3.38 1.03 0.07 0.43 7.71 0.37 Incl. 156.64 157.66 1.02 2.91 0.11 0.42 16.30 0.80 PI-26-010 10.00 12.55 2.55 0.22 0.11 0.36 3.31 0.08 PI-26-010 135.30 137.78 2.48 0.57 0.44 1.01 9.27 0.35 Incl. 136.80 137.78 0.98 1.17 0.12 1.72 15.40 0.51 And 141.81 147.23 5.42 1.99 0.21 1.66 15.49 0.80 Incl. 141.81 145.90 4.09 2.49 0.25 2.04 18.96 0.99 Incl. 145.00 145.90 0.90 4.90 0.09 1.11 18.60 0.86 PI-26-011 143.00 144.94 1.94 0.11 0.05 0.18 1.86 0.08 PI-26-012 22.32 22.63 0.31 0.28 0.19 0.86 5.60 0.05 * All reported intervals represent drilled lengths. True widths of the mineralized intersections are currently unknown. Figure 1: Plan map of 2026 diamond drilling at the Clifford Jones (Bull Road) Zone. The upper lens (UL) and lower lens (LL) mineralization remains open along strike and at depth. The upper lens mineralization has been confirmed over a strike length of approximately 145 m and the lower lens over an approximate strike length of 40 m. “Including” assay values not represented by colour-scale on figure. Figure 2: North-looking perspective of the 2026 Phase One drilling completed at the Clifford Jones (Bull Road) Zone. “Including” assay values not represented by colour-scale on figure. Figure 3: Oblique view of drill holes PI-26-007, 008, 009, and 010 (looking 035 azimuth)

HM Exploration Commences Optical & Acoustic Televiewer Program at the Lewis Pilley’s Project

Vancouver, July 24, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce it has contracted DGI Geoscience Inc. (“DGI”) to conduct an Optical and Acoustic Televiewer (OTV/ATV) program (the “Program”) on the Phase One drill holes at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. Highlights: About the Televiewer Program (OTV / ATV) Televiewers produce accurate and consistent oriented images of drill holes, allowing in situ structural measurements of both planar and linear geological features. Data can be visualized as 3D “virtual core” or as 2D “unwrapped core,” and structures can be measured very rapidly. Data is catalogued automatically and ready to import into 3D modelling programs. Common features analyzed include veins, contacts, bedding/foliation, fractures/joints, faults, fold limbs and hinges (https://www.dgigeoscience.com/imaging/). About the Lewis Pilley’s Project The Project is road accessible and situated approximately twenty-five (25) km east of the town of Springdale, approximately fifty-five (55) km southeast of Firefly Metals’ Green Bay Project and approximately one hundred fifty (150) km from the Pine Cove Mill and Port by way of major roads. The Project has a long history of mining and exploration dating back to the late 1800s when the Pilley’s Island Pyrite Company Ltd. produced approximately 450,000 tonnes of massive pyritic ore from the Pilley’s Island Mine-Old Mines (after Kerr, 1996). The Project hosts a cluster of VMS systems and prospects with demonstrated high-grade Zn-Pb-Cu-Ag+/-Au intersections. Mineralization is typical bimodal-felsic VMS, with both massive sulphide and sulphide-clast breccias (Thurlow, 1996). The geological setting is directly analogous to the Buchans camp (Thurlow, 1996), and the presence of sulphide-clast breccias is a strong vector toward proximal massive sulphide lenses. Most of the historic showings that fall within the extents of the Project have not seen systematic exploration. Many of the historic drill holes were shallow and drilled in a vertical orientation limiting the geological knowledge of the extents of the underlying lithology and mineralization. Work is being planned to validate historic assay results as well as collect new data from the 3B-Zone, Clifford Jones (Bull Road) Extension, Bouzanne Shaft, Henderson, Mansfield and Pilley’s Cove Showings. National Instrument 43-101 Disclosure Nicholas Rodway, P.Geo, (Licence# 46541) (Permit to Practice# 1000359) is CEO and Director of the Company, and a qualified person as defined by National Instrument 43-101- Standards of Disclosure for Mineral Projects. Mr. Rodway has supervised the preparation of and verified and approved the technical content in this news release. No limitations were noted during the verification process. References Dunning, G.R., Kean, B.F., Thurlow, J.G and Swinden, H.S. (1987): Geochronology of the Buchans, Roberts Arm and Victoria Lake Groups and Mansfield Cove Complex, Newfoundland. Canadian Journal of Earth Sciences, Volume 24, pages 1175-1184.Kerr, A. (1996) New perspectives on the stratigraphy, volcanology, and structure of the island-arc volcanic rocks in the Ordovician Roberts Arm Group, Notre Dame Bay. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 283-310.Thurlow, J.G (1996): Geology of a newly discovered cluster of blind massive sulphide deposits, Pilley’s Island, central Newfoundland. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 181- 189. About HM Exploration Corp. The Company is currently advancing its Lewis Pilley’s Project located in Newfoundland. The Project encompasses a land area of ~60.25 km² and hosts a cluster of volcanogenic massive sulphide (VMS) systems and the historic Pilley’s Island Mine (~450,000 tonnes of ore produced in the late 1800s). Historic drilling at the 3B-Zone returned significant intersections, including 16.77m of 1.84% Cu and 3.05m of 5.03% Zn with 1.02 g/t Au (Au Pell, 1989). The geological setting is directly analogous to the prolific Buchans camp, with multiple underexplored showings and strong potential for new discoveries. In addition, the Company holds 100% interest in the Devil’s Den Project, an exploration-stage project consisting of two contiguous mineral licences encompassing ~3,200 hectares located west of Port Alberni, Vancouver Island, British Columbia. Exploration work completed in 2022 established four geochemical grids to identify possible buried mineralization, uncovering multiple high-grade occurrences including copper values up to 4.68% at surface (Devil’s Den NI 43-101, Nov 2022). Phase One exploration completed in 2025 included high-resolution UAV magnetic surveying and a lithogeochemical program, which identified new structural targets and zones of elevated copper, zinc, and nickel geochemistry. The project hosts multiple historical adits with high-grade surface occurrences that remain undrilled. HM believes a lack of adequate modern exploration has left significant discovery potential. HM Exploration is committed to applying modern exploration techniques across its projects to unlock value in historically underexplored Canadian mining districts. On Behalf of the Board of Directors HM EXPLORATION CORP. “Nicholas Rodway” President & CEO Tel: 604.681.1568info@hmexploration.com Forward Looking Statements This news release includes certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and “forward-looking information” under applicable Canadian securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, “expect”, “target”, “plan”, “forecast”, “may”, “would”, “could”, “schedule” and similar words or expressions, identify forward-looking statements or information. Forward-looking statements and forward-looking information relating to any future mineral production, liquidity, enhanced value and capital markets profile of HM, future growth potential for HM and its business, and future exploration plans are based on management’s reasonable assumptions, estimates, expectations, analyses and opinions, which are based on management’s experience and perception of trends, current conditions and expected developments, and other factors that management believes are relevant and reasonable in the circumstances, but which may prove to be incorrect. Assumptions have been made regarding, among other things, the price of copper, gold and other metals; costs of exploration and development; the estimated costs of development of exploration projects; HM’s ability to operate in a safe and effective manner and its ability to obtain financing on reasonable terms. This news release contains “forward-looking information” within the meaning of the Canadian securities laws. Statements, other than statements of historical fact, may constitute forward looking information and include, without limitation, statements with respect to the Project and

HM Exploration Confirms Significant Mineralization at Lewis Pilley’s Project; Intersects 23 Metres of 1.2% Cu, 1.7% Zn, 10.7 g/t Ag and 0.25 g/t Au

Vancouver, July 21, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce assay results from the first seven (7) of twelve (12) drill holes from the Company’s Phase One drilling program (the “Program”) at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. Highlights: PI-26-007* PI-26-001* * All reported intervals represent drilled lengths. True widths of the mineralized intersections are currently unknown. “The intense mineralization we have visually observed in the first seven holes has now been confirmed by laboratory analysis, including high-grade intervals grading up to 2.45% Cu, 5.89 g/t Au and 92.2 g/t Ag in the lower lens and very extensive intervals in the upper lens,” said Nick Rodway, CEO of HM Exploration. “These assay results confirm that the Lewis Pilley’s Project hosts a polymetallic VMS system with excellent potential for expansion. With assays pending from holes eight to twelve, we are planning our EM survey in order to systematically design our Phase Two drilling program set to commence this fall.” The 2026 Phase One drilling Program was focused on evaluating the continuity of the mineralized system below known surface showings and along strike of the Clifford Jones (Bull Road) Zone (the “Zone”) to improve the Company’s understanding of the geological controls on mineralization. Assays have confirmed that the upper targeted copper-bearing debris flow contains significant mineralization over an interpreted strike length of approximately 60 m, from a total drill-tested length of approximately 135 m, within zones of massive to semi-massive sulphide through holes 1 and 2 as well as holes 5, 6, and 7 (Figure 1). Assay values from hole 7 also confirm that the lower mineralized sulphide lens contains significant mineralization within predominantly massive to semi-massive, and minor disseminated, sulphide mineralization (Figures 2 & 3). The assay results validate the Company’s geological interpretation that multiple stacked sulphide lenses are present within the Project’s Volcanogenic Massive Sulphide (“VMS”) system. Both the upper and lower mineralized zones are open along strike and down-dip. The mineralization from the upper zone is characterized by semi-massive to massive fragments of sulphide that have been fractured, transported, and chaotically mixed with varying types of volcanic rock. The fragments range from sun-rounded to angular, possibly indicating multiple transport events and reworking of these fragments through moderate to distal transport from the original deposition site. The source of the material is interpreted to be very nearby and may be supported by a stockwork vein system representing the feeder zone of the mineralization. The mineralization from the lower zone is characterized by more massive and coherent fragments of sulphide with less rounding and fracturing than observed in the upper zone. The more ‘intact’ nature of these fragments provides evidence that the new lower mineralized sulphide lens may represent debris deposited closer to the original hydrothermal vent system (Figure 4). Significant assay results from the first seven (7) drill holes of the Phase One drilling Program can be found below in Table 1. Table 1: Significant assays from Phase One drilling Program at the Clifford Jones (Bull Road) Zone. (NSV=No Significant Values) Clifford Jones (Bull Road) Zone – Significant Assays* Hole ID From (m) To (m) Length (m) Cu % Pb % Zn % Ag g/t Au g/t PI-26-001 12.09 16.56 4.47 1.49 1.04 5.05 19.54 0.28 Incl. 12.70 13.30 0.60 4.58 0.19 1.60 28.10 0.56 Incl. 14.20 14.92 0.72 1.96 3.14 18.40 44.60 0.30 And 50.30 56.75 6.45 0.50 0.29 1.20 5.77 0.15 Incl. 54.07 54.94 0.87 1.38 0.44 2.38 13.90 0.35 PI-26-002 11.10 16.20 5.10 0.42 0.08 0.59 4.61 0.19 Incl. 14.00 15.00 1.00 0.89 0.09 0.91 6.70 0.26 PI-26-003       NSV PI-26-004 16.48 16.78 0.30 0.22 0.04 0.03 2.20 0.12 PI-26-005 14.00 18.00 4.00 0.59 0.20 0.66 11.34 0.18 Incl. 16.33 17.26 0.93 1.85 0.37 1.21 36.70 0.47 And 28.00 45.97 17.97 0.34 0.13 0.69 4.59 0.12 Incl. 35.30 43.49 8.19 0.49 0.20 1.05 6.84 0.18 And 257.44 257.74 0.30 0.04 0.04 0.14 3.90 0.52 PI-26-006 11.43 13.14 1.71 0.57 0.37 1.21 8.56 0.19 And 24.98 27.16 2.18 0.18 0.06 0.22 2.66 0.08 PI-26-007 7.00 30.00 23.00 1.21 0.38 1.67 10.67 0.25 Incl. 16.00 24.18 8.18 2.03 0.62 2.36 16.35 0.38 And 155.31 155.97 0.66 2.45 0.01 1.70 92.20 5.89 And 175.85 179.30 3.45 0.80 0.05 0.52 3.67 0.21 Incl. 178.00 179.00 1.00 1.08 0.09 0.97 4.70 0.29 * All reported intervals represent drilled lengths. True widths of the mineralized intersections are currently unknown. Figure 1: Plan map of 2026 diamond drilling at the Clifford Jones (Bull Road) Zone. Currently the upper lens (UL) and lower lens (LL) mineralization remains open along strike and at depth. The upper lens mineralization has been confirmed over a strike length of approximately 60 m, from a total drill-tested length of approximately 135 m, within zones of massive to semi-massive sulphide through holes 1 and 2 as well as holes 5, 6, and 7. Small red discs represent visually logged mineralized zones (assays pending).  “Including” assay values not represented by colour-scale on figure. Figure 2: Oblique view of the 2026 Phase One drilling completed at the Clifford Jones (Bull Road) Zone. Small red discs represent visually logged mineralized zones (assays pending). “Including” assay values not represented by colour-scale on figure. Figure 3: Cross-section of drill hole PI-26-007 (looking north) showing select significant mineralized intercepts with corresponding drill-core photos. In drill section, small red discs represent visually logged mineralized zones (assays pending). Figure 4: Conceptual model of VMS mineralization and the locations of where various types of mineralization may be located within the system. Mineralization intersected at the Clifford Jones (Bull Road) Zone appears to be transported from source; however, the angularity of the massive-sulphide clasts may indicate limited transport distance from the source vent (Modified after Kirkham and Thurlow, 1987). Table 2: 2026 drill collar data; Coordinates reported in NAD83 – Zone 21N. Hole ID East North Azi Dip Depth (m) Assay Status PI-26-001 593296 5485437 255 -45 187.00 This Release PI-26-002 593269 5485422 75 -45

HM Exploration Expands Newly Discovered Blind Massive Sulphide Lens at Lewis Pilley’s Project

Vancouver, July 7, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce a visual drilling update from an additional four diamond drill holes completed as part of the Company’s Phase One drilling program (the “Program”) at its Lewis Pilley’s Project (the “Project”) in Newfoundland, Canada. The four holes in this press release represent an additional 1,115.60 metres for a total drilled meterage of 2,747.87m. Planning is already underway for a Phase Two drilling program in fall 2026 based on the encouraging visual observations. Figure 1: Drill core (lower zone) in hole PI-26-010 from 140.51 – 148.80m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive chalcopyrite + pyrite sulphide mineralization. See Table 2 for detailed visual descriptions. Highlights: “Holes 9 and 10 have successfully intersected the newly discovered lower massive sulphide lens extending the zone approximately 40 metres to the northwest at a vertical depth of only ~135 metres,” said Nick Rodway, CEO of HM Exploration. “These visual results continue to strengthen our geological model and reinforce the potential that we are vectoring toward the source of the mineralized system. With assays pending from all twelve Phase One drill holes, we are already planning a downhole EM survey followed by a Phase Two drilling program for fall 2026.” The 2026 Phase One Drilling program was focused on evaluating the continuity of the mineralized system below known surface showings and along strike of the Clifford Jones Zone (the “Zone”) to improve the Company’s understanding of the geological controls on mineralization (Figure 4). Visual observations from drilled holes indicate that the upper targeted copper-bearing debris flow was successfully intersected, with zones of alteration and massive to semi-massive sulphide mineralization observed in the drill core. Drill holes 9 and 10 have successfully intersected a lower mineralized sulphide lens that was previously undiscovered. Core samples have been submitted to the laboratory for analysis. Assay results will be released once they have been returned to the Company. Holes 9 and 10 intersected a wide range of massive, semi-massive and disseminated sulphide mineralization over the following drill core lengths*: Observations from drill core continue to support the interpretation that the new lower mineralized sulphide lens may represent debris deposited closer to the original hydrothermal vent system (Figure 5). Mineralization can be described as clast-dominated debris zones predominantly consisting of sub-angular to angular fragments of massive sulphide composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. More detailed classifications for individual intercepts are referenced in Table 2 below*. * The Company cautions that the presence of visible sulphides and visual estimates of mineral abundance are not indicative of grade and should not be considered a substitute for laboratory analysis. Assay results are pending. True widths of mineralized intersections are currently unknown. Figure 2: Drill core (upper zone) in hole PI-26-009 from 16.53 – 23.72m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive chalcopyrite + pyrite sulphide mineralization. See Table 2 for detailed visual descriptions. Figure 3: Drill core (lower zone) in hole PI-26-009 from 154.90 – 159.19m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive chalcopyrite + pyrite sulphide mineralization. See Table 2 for detailed visual descriptions. Figure 4: Plan map of 2026 diamond drilling at the Clifford Jones (Bull Road) Zone. ‘This Release’ drill collars shown as red circles; ‘Past Release’ drill collars shown as white circles; Historic drill collars shown as black circles. Currently the upper lens (UL) and lower lens (LL) mineralization remains open along strike and at depth. Figure 5: Conceptual model of VMS mineralization and the locations of where various types of mineralization may be located within the system. Mineralization intersected at the Clifford Jones Zone appears to be transported from source; however, the angularity of the massive-sulphide clasts may indicate limited transport distance from the source vent (Modified after Kirkham and Thurlow, 1987). Table 1: 2026 drill collar data; Coordinates reported in NAD83 – Zone 21N. Hole_ID East North Azi Dip Depth (m) Assay Status PI-26-001 593296 5485437 255 -45 187.00 Pending PI-26-002 593269 5485422 75 -45 199.00 Pending PI-26-003 593269 5485422 75 -65 199.00 Pending PI-26-004 593269 5485422 90 -45 151.00 Pending PI-26-005 593281 5485460 255 -45 352.00 Pending PI-26-006 593281 5485460 255 -65 133.00 Pending PI-26-007 593264 5485472 255 -45 191.27 Pending PI-26-008 593264 5485472 255 -60 220.00 Pending PI-26-009 593243 5485492 260 -45 341.60 Pending PI-26-010 593243 5485492 260 -60 259.00 Pending PI-26-011 593213 5485522 260 -50 253.00 Pending PI-26-012 593213 5485522 235 -45 262.00 Pending Table 2: Mineralized interval descriptions. Hole_ID From_m To_m Length_m Comments PI-26-009 17.00 18.00 1.00 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock 18.00 19.45 1.45 Clast-dominated debris zone predominantly consisting of sub-rounded to angular fragments of massive sulphide composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock 19.45 20.00 0.55 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock 20.00 22.00 2.00 Clast-dominated debris zone predominantly consisting of sub-rounded to angular fragments of massive sulphide composed of

HM Exploration Discovers New Blind Massive Sulphide Lens at Lewis Pilley’s Project

Vancouver, June 29, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) (OTCQB:HMEXF) is pleased to announce that it has completed an additional three holes as part of the phase one drilling program (the “Program”) at the Company’s Lewis Pilley’s Project (the “Project”), located in Newfoundland, Canada. Figure 1: Drill core (upper zone) in hole PI-26-008 from 16.12 – 24.78m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive chalcopyrite + pyrite sulphide mineralization (A & B). See Table 2 for visual descriptions. The three holes in this press release represent an additional 544.27 metres for a total drilled meterage of 1,632.27m of a planned minimum 2,500 metres of diamond drilling. Highlights: “While we were expecting to see significant mineralization below the exposed massive sulphide horizon at the Clifford Jones trench, the intersection of the lower-lens came as a welcomed new exciting discovery” said Nick Ryan, Chief Geologist with HM Exploration Corp. “The discovery of a second mineralized lens demonstrates that the system is more extensive than previously recognized and supports the potential for multiple stacked sulphide horizons. We look forward to receiving laboratory assays back and delineating the extents of this new discovery with subsequent drilling.” Drilling was focused on evaluating the continuity of the mineralized system below known surface showings and along strike of Clifford Jones Zone (the “Zone”) to improve the Company’s understanding of the geological controls on mineralization (Figure 2). Visual observations from drilled holes indicate that the upper targeted copper-bearing debris flow was successfully intersected, with zones of alteration and massive to semi-massive sulphide mineralization observed in the drill core. Drill holes 7 and 8 have successfully intersected a new lower mineralized sulphide lens that was previously undiscovered. The lower-lens appears more massive indicating that the geometry of this lens may assist with vectoring towards the source vent(s) as depicted in Figure 3. Core samples have been submitted to the laboratory for analysis. Assay results will be released once they have been returned to the Company. All three holes from this release intersected a wide range of massive, semi-massive and disseminated sulphide mineralization over the following drill core lengths*: Mineralization can be described as clast-dominated debris zones consisting of sub-angular to angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. More detailed classifications for individual intercepts are referenced in Table 2 below*. * The Company cautions that the presence of visible sulphides and visual estimates of mineral abundance are not indicative of grade and should not be considered a substitute for laboratory analysis. Assay results are pending. Figure 2: Plan map of 2026 diamond drilling at the Clifford Jones (Bull Road) Zone. ‘This Release’ drill collars shown as red circles; ‘Past Release’ drill collars shown as white circles; Historic drill collars shown as black circles. Currently the upper lens (UL) and lower lens (LL) mineralization remains open along strike and at depth. Figure 3: Conceptual VMS model illustrating the interpreted position of the newly identified lower lens relative to the upper debris flow mineralization. Mineralization intersected at the Clifford Jones Zone appears to be transported from source; however, the angularity of the massive-sulphide clasts may indicate limited transport distance from the source vent(s) (Modified after Kirkham and Thurlow, 1987). Figure 4: Drill core (upper zone) in hole PI-26-007 from 13.00 – 21.33m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive sulphide mineralization. See Table 2 for visual descriptions. Figure 5: Drill core (lower zone) in hole PI-26-007 from 154.23 – 158.47m and 175.51 – 179.53m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive sulphide mineralization. See Table 2 for visual descriptions. Figure 6: Drill core (lower zone) in hole PI-26-008 from 160.17 – 168.73m downhole. Detailed photo from core box, outlined in blue, highlighting sections of massive sulphide mineralization. See Table 2 for visual descriptions. Table 1: 2026 drill collar data; Coordinates reported in NAD83 – Zone 21N. Hole_ID East North Azi Dip Depth (m) Assay Status PI-26-001 593296 5485437 255 -45 187.00 Pending PI-26-002 593269 5485422 75 -45 199.00 Pending PI-26-003 593269 5485422 75 -65 199.00 Pending PI-26-004 593269 5485422 90 -45 151.00 Pending PI-26-005 593281 5485460 255 -45 352.00 Pending PI-26-006 593281 5485460 255 -65 133.00 Pending PI-26-007 593264 5485472 255 -45 191.27 Pending PI-26-008 593264 5485472 255 -60 220.00 Pending Table 2: Mineralized interval descriptions. Hole_ID From_m To_m Length_m Comments PI-26-006 11.43 13.62 2.19 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock           PI-26-007 7.00 10.00 3.00 Predominantly fine-grained disseminated mineralization  (Py + Cpy ± Sph ± Gn) observed in matrix 10.00 17.00 7.00 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock 17.00 19.00 2.00 Clast-dominated debris zones consisting of sub-rounded to angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock 19.00 22.00 3.00 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy

HM Exploration Announces Listing on OTCQB Venture Market

Vancouver, June 10, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM) (FSE:X5H) (OTCQB:HMEXF) is pleased to announce that the Company’s common shares have been approved for trading on the OTCQB Venture Market (the “OTCQB”) under the trading symbol “HMEXF”. The commencement of trading on the OTCQB was effective June 8, 2026. There will be no change to the Company’s trading on the Canadian Securities Exchange (“CSE”) under the symbol “HM” or on the Frankfurt Stock Exchange (“FSE”) under the symbol “X5H”. Highlights: “Listing on the OTCQB is an important milestone for HM Exploration as we enter the most active period in our Company’s history,” said Nick Rodway, CEO of HM Exploration Corp. “We are currently executing our maiden drill program at the Lewis Pilley’s Project, where three of our first five holes have successfully intersected sulphide mineralization. The OTCQB listing means U.S. investors now have direct and accessible participation in HM’s story at what we believe is a pivotal time for the project. We look forward to reporting assay results and continuing to advance our programs.” The OTCQB Venture Market is operated by OTC Markets Group Inc. in New York and is a recognized marketplace for entrepreneurial and development-stage U.S. and international companies. The OTCQB provides U.S. investors with improved access to company information and electronic trading. The commencement of trading on the OTCQB is intended to expand the Company’s access to U.S. capital markets and provide an additional quotation venue for the Company’s common shares for U.S. broker-dealers and investors, subject to prevailing market conditions. The Company has applied for DTC eligibility, which will further facilitate electronic clearing and settlement of the Company’s common shares for U.S. investors. A further news release will be issued upon the granting of DTC eligibility. About the Lewis Pilley’s Project The Project is road accessible and situated approximately twenty-five (25) km east of the town of Springdale, approximately fifty-five (55) km southeast of Firefly Metals’ Green Bay Project and approximately one hundred fifty (150) km from the Pine Cove Mill and Port by way of major roads.It has a long history of mining and exploration dating back to the late 1800s when the Pilley’s Island Pyrite Company Ltd. produced approximately 450,000 tonnes of massive pyritic ore from the Pilley’s Island Mine-Old Mines (after Kerr, 1996). The Project hosts a cluster of VMS systems and prospects with demonstrated high-grade Zn-Pb-Cu-Ag+/-Au intersections. Mineralization is typical bimodal-felsic VMS, with both massive sulphide and sulphide-clast breccias (Thurlow, 1996). The geological setting is directly analogous to the Buchans camp (Thurlow, 1996), and the presence of sulphide-clast breccias is a strong vector toward proximal massive sulphide lenses. Most of the historic showings that fall within the extents of the Project have not seen systematic exploration. Many of the historic drill holes were shallow and drilled in a vertical orientation limiting the geological knowledge of the extents of the underlying lithology and mineralization. Work is being planned to validate historic assay results as well as collect new data from the 3B-Zone, Clifford Jones (Bull Road) Extension, Bouzanne Shaft, Henderson, Mansfield and Pilley’s Cove Showings. References Kerr, A. (1996) New perspectives on the stratigraphy, volcanology, and structure of the island-arc volcanic rocks in the Ordovician Roberts Arm     Group, Notre Dame Bay. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 283-310. Thurlow, J.G (1996) Geology of a newly discovered cluster of blind massive sulphide deposits, Pilley’s Island, central Newfoundland. In Current Research, Newfoundland Department of Natural Resources, Geological Survey, Report 96-1, pages 181- 189. National Instrument 43-101 Disclosure Nicholas Rodway, P.Geo, (Licence# 46541) (Permit to Practice# 1000359) is CEO and Director of the Company, and a qualified person as defined by National Instrument 43-101- Standards of Disclosure for Mineral Projects. Mr. Rodway has supervised the preparation, verified and approved the technical content in this news release. Verification included review of historical reports. No limitations were noted during the verification process. About HM Exploration Corp. The Company is currently advancing its Lewis Pilley’s Project located in Newfoundland. The Project encompasses a land area of ~60.25 km² and hosts a cluster of volcanogenic massive sulphide (VMS) systems and the historic Pilley’s Island Mine (~450,000 tonnes of ore produced in the late 1800s). Historic drilling at the 3B-Zone returned significant intersections, including 16.77m of 1.84% Cu and 3.05m of 5.03% Zn with 1.02 g/t Au (Au Pell, 1989). The geological setting is directly analogous to the prolific Buchans camp, with multiple underexplored showings and strong potential for new discoveries. In addition, the Company holds 100% interest in the Devil’s Den Project, an exploration-stage Project consisting of two contiguous mineral licences encompassing ~3,200 hectares located west of Port Alberni, Vancouver Island, British Columbia. Exploration work completed in 2022 established four geochemical grids to identify possible buried mineralization, uncovering multiple high-grade occurrences including copper values up to 4.68% at surface (Devil’s Den NI 43-101, Nov 2022). Phase One exploration completed in 2025 included high-resolution UAV magnetic surveying and a lithogeochemical program, which identified new structural targets and zones of elevated copper, zinc, and nickel geochemistry. The project hosts multiple historical adits with high-grade surface occurrences that remain undrilled. HM believes a lack of adequate modern exploration has left significant discovery potential. HM Exploration is committed to applying modern exploration techniques across its projects to unlock value in historically underexplored Canadian mining districts. On Behalf of the Board of Directors HM EXPLORATION CORP. “Nicholas Rodway” President & CEO Tel: 604.681.1568info@hmexploration.com Forward Looking Statements This news release includes certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and “forward-looking information” under applicable Canadian securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”, expect”, “target”, “plan”, “forecast”, “may”, “would”, “could”, “schedule” and similar words or expressions, identify forward-looking statements or information. Forward-looking statements and forward-looking information relating to any future mineral production, liquidity, enhanced value and capital markets profile of HM, future growth potential for HM and its

HM Exploration Drills Massive Sulphide at Lewis Pilley’s Project

Vancouver, June 4, 2026 – HM Exploration Corp. (“HM Exploration”, “HM” or the “Company”) (CSE:HM)(FSE:X5H) is pleased to provide an update on the first five holes of the phase one drilling program (the “Program”) at the Company’s Lewis Pilley’s Project (the “Lewis Project”, the “Property”), located in Newfoundland, Canada. The first five holes of the maiden drilling program represent 1,088 metres of a planned minimum 2,500 metres of diamond drilling. Highlights: “The goal of our first drill program is to test the VMS-style debris flow mineralization visible at surface,” said Nick Rodway, CEO of HM Exploration Corp. “Three of the first five holes successfully intersected zones of massive, semi-massive and fine-grained disseminated sulphide mineralization, including sizeable angular chalcopyrite-bearing clasts. Surface grab samples from this area have returned values of over 16% copper, and we are encouraged to see similar mineralization now intersected in drilling. The angular nature of the mineralized clasts may indicate relatively limited transport from their source and is consistent with proximity to a hydrothermal vent environment.” Drilling was focused on evaluating the continuity of the mineralized system below known surface showings and along strike of Clifford Jones Zone (the “Zone”) to improve the Company’s understanding of the geological controls on mineralization. Visual observations from the initial five holes indicate that the targeted copper-bearing debris flow was successfully intersected, with zones of alteration and massive to semi-massive sulphide mineralization observed in the drill core. Core samples for the first five holes have been submitted to the laboratory for analysis. Assay results will be released once they have been returned to the company. Three of five holes intersected a wide range of massive, semi-massive and disseminated sulphide mineralization over the following drill core lengths*: Mineralization can be described as clast-dominated debris zones consisting of sub-angular to angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. More detailed classifications for individual intercepts are referenced in Table 2 below*. * The Company cautions that the presence of visible sulphides and visual estimates of mineral abundance are not indicative of grade and should not be considered a substitute for laboratory analysis. Assay results are pending.    Figure 1: Plan map of 2026 diamond drilling at the Clifford Jones (Bull Road) Zone. Recent drill collars shown as white circles; Historic drill collars shown as black circles. Table 1: 2026 drill collar data; Coordinates reported in NAD83 – Zone 21N. Hole_ID Easting Northing Azimuth Dip Depth (m) PI-26-001 593296 5485437 255 -45 187.00 PI-26-002 593269 5485422 75 -45 199.00 PI-26-003 593269 5485422 75 -65 199.00 PI-26-004 593269 5485422 90 -45 151.00 PI-26-005 593281 5485460 255 -45 352.00 Table 2: Mineralized interval descriptions. Hole_ID From_m To_m Length_m Comments PI-26-001 10.74 12.70 1.96 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-001 12.70 13.30 0.60 Clast-dominated debris zones consisting of sub-rounded to angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-001 13.30 16.56 3.26 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-001 51.48 52.50 1.02 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock PI-26-001 52.50 53.31 0.81 Clast-dominated debris zones consisting of sub-rounded to sub angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-001 53.31 57.75 4.44 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock.           PI-26-002 10.00 12.51 2.51 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-002 12.51 13.00 0.49 Clast-dominated debris zones consisting of sub-rounded to sub angular fragments of massive sulphide (~85% of intercept) composed of Cpy + Py ± Sph ± Gn suspended in interstitial fine-grained disseminated sulphides (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock. PI-26-002 13.00 18.00 5.00 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ± Gn) and felsic ± mafic lithic fragments suspended in a matrix of fine-grained sulphide (Py + Cpy ± Sph ± Gn) and milled felsic ± mafic rock.           PI-26-005 14.00 16.33 2.33 Matrix-dominated debris flow composed of fragments of sub-rounded to angular clasts of massive sulphide (Py + Cpy ± Sph ±