Corporate Presentation

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 NYSE & TSXV: MTA METALLAROYALTY.COM March 2025

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 Forward Looking Statements This presentation contains certain "forward looking statements" and certain "forward-looking information" as defined under applicable Canadian and U.S. securities laws. Forward-looking statements and information can generally be identified by the use of forward-looking terminology such as "may", "will", "should", "expect", "intend", "estimate", "anticipate", "believe", "continue", "plans" or similar terminology. The forward-looking information contained herein is provided for the purpose of assisting readers in understanding management's current expectations and plans relating to the future. Readers are cautioned that such information may not be appropriate for other purposes. Forward looking statements in this presentation include, but are not limited to: the ability to enhance shareholder value and providing investors leverage to gold, silver and copper; the projected GEO growth in four years; the potential for significant NAV growth; the expected asset average mine life; the estimated compound annual growth rate; the estimated annual production at Cote and Gosselin, Tocantinzinho, Endeavor, Copper World, Taca Taca, Wasamac and Vizcachitas; the expansion potential at Cote & Gosselin; the publication of a revised mine plan for Cote & Gosselin and the timing thereof; the estimate date of first royalty payment; the estimated average annual GEO production at Cote, Tocantinzinho, Endeavor, Copper World, Taca Taca, Wharf, Aranzazu, Wasamac, Vizcachitas and Castle Mountain, and timing of the forecast for Gosselin; the 2025 guidance GEO forecast at Tocantinzinho, Endeavor and Aranzazu; the expected mine life at Endeavor, Taca Taca, Wharf; the restart of production at Endeavor and the timing thereof; the advancement of feasibility studies at Copper World throughout 2025; Hudbay’s decision on Copper World and the timing thereof; the receipt of final approval for the Environmental and Social Impact Assessment at Taca Taca; the potential to extend Wharf’s mine life; the processing of ore from Wasamac at the Canadian Malartic Mill; the publication of a Feasibility Study for Vizcachitas and the timing thereof; the commencement of production at Vizcachitas and the timing thereof; the expansion of Castle Mountain in phase 2; the potential for Castle Mountain to come one of the top ten gold mines in the USA; the expectations of Metalla regarding the mineralization of Harrier and Phoenix; the expectations of owners/operators and the authors of relevant technical reports and studies with respect to the mineral projects in which Metalla has an interest, including without limitation, estimates of mineral resources and mineral reserves and updates thereto, production, mine life, net present value, internal rate of return, costs, drilling, development, permitting, water sourcing, commodity mix and prices, and the timing thereof; future opportunities and acquisitions; future exploration, financing, development, production and other anticipated developments on the properties in which the Company has or has agreed to acquire an interest; future growth, cash generation and returns; and the establishment of Metalla as an emerging and leading mid-tier royalty and streaming company. Forward-looking statements and information are based on forecasts of future results, estimates of amounts not yet determinable and assumptions that, while believed by management to be reasonable, are inherently subject to significant business, economic and competitive uncertainties, and contingencies. Forward-looking statements and information are subject to various known and unknown risks and uncertainties, many of which are beyond the ability of Metalla to control or predict, that may cause Metalla's actual results, performance or achievements to be materially different from those expressed or implied thereby, and are developed based on assumptions about such risks, uncertainties and other factors set out herein, including but not limited to: the absence of control over mining operations from which Metalla will purchase precious metals or from which it will receive stream or royalty payments and risks related to those mining operations, including risks related to international operations, government and environmental regulation, delays in mine construction and operations, actual results of mining and current exploration activities, conclusions of economic evaluations and changes in project parameters as plans are refined; problems related to the ability to market precious metals or other metals; industry conditions, including commodity price fluctuations, interest and exchange rate fluctuations; interpretation by government entities of tax laws or the implementation of new tax laws; regulatory, political or economic developments in any of the countries where properties in which Metalla holds a royalty, stream or other interest are located or through which they are held; risks related to the operators of the properties in which Metalla holds a royalty or stream or other interest, including changes in the ownership and control of such operators; risks related to global pandemics, including the current novel coronavirus (COVID-19) global health pandemic, and the spread of other viruses or pathogens; influence of macroeconomic developments; business opportunities that become available to, or are pursued by Metalla; reduced access to debt and equity capital; litigation; title, permit or license disputes related to interests on any of the properties in which Metalla holds a royalty, stream or other interest; the volatility of the stock market; competition; future sales or issuances of debt or equity securities; use of proceeds; dividend policy and future payment of dividends; liquidity; market for securities; enforcement of civil judgments; and risks relating to Metalla potentially being a passive foreign investment company within the meaning of U.S. federal tax laws; and the other risks and uncertainties disclosed under the heading “Risk Factors” in the Company’s most recent annual information form, annual report on Form 40-F and other documents filed with or submitted to the Canadian securities regulatory authorities on the SEDAR+ website at www.sedarplus.ca and the U.S. Securities and Exchange Commission on the EDGAR website at www.sec.gov. Metalla undertakes no obligation to update forward-looking information except as required by applicable law. Such forward- looking information represents management's best judgment based on information currently available. No forward-looking statement can be guaranteed and actual future results may vary materially. Accordingly, readers are advised not to place undue reliance on forward-looking statements or information.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 3 About Metalla is an emerging mid-tier royalty and streaming company with over 100 mining royalties and sector leading production growth. Our aim is to provide investors leverage to gold, silver, and copper; and enhance shareholder value by prudently investing in a diverse portfolio with assets in proven geological belts, managed by top operators in safe jurisdictions.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 4 The Case for Investment The Case for Valuation. Successful Track Record & Disciplined Capital Allocation Peer-Leading Growth Focused on Inflationary Metals Best In Class Jurisdictional Risk Profile Emerging Mid-Tier with Cornerstone Assets Best In Class Operator Risk Profile R O Y A L T Y C O M P A N Y D E L I V E R I N G I N D U S T R Y L E A D I N G G R O W T H Projected four-year > 35% CAGR on gold equivalent production from 2,500 to over 8,500 ounces annually. Asset base focused solely on North America, South America, and Australia. 8 of top 10 assets held by > $2B operators and have an average 20-year life of mine. Over 100 royalties and streams with cornerstone assets, including Côté-Gosselin, Tocantinzinho, Taca Taca, and Copper World. Experienced management team has acquired over 100 royalties in 34 value accretive transactions over 12 years. Trading at material NAV discount to peers with significant growth not reflected at current levels.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 5 A N A L Y S T C O V E R A G E The Capital Structure Basic Shares Outstanding (M) 92.2 Options & Other Dilutive Securities (M) 1.1 Fully Diluted Shares Outstanding (M) 93.4 Market Cap (US $2.7*) $252.18 Cash $9.7 Convertible Debt $12.7 Available Debt Facility $21.5 L3M Average Daily Volume (NYSE/TSX-V) 408,947 US$M, unless otherwise stated *February 10, 2025 C O N S E N S U S T A R G E T P R I C E $5.28 Average Analyst Target 52 week high/low $3.93/$2.39 MTA - Share Price (Daily): $2.7 MTA - Volume (Daily): 0.18M Beedie Capital Retail and Other Unidentified Euro Pacific Van Eck First Majestic Silver Management & Insiders Adrian Day Asset Management Merk Investments LLC US Global Investors Other Identified Institutions 10% 7% 5% 5% 5% 4% 3% 59% -- 0.50 M 1.00 M 1.50 M 2.00 M $2.00 $2.50 $3.00 $3.50 $4.00 Feb-24 Mar-24 Apr-24 May-24 Jun-24 Jul-24 Aug-24 Sep-24 Oct-24 Nov-24 Dec -24 Jan-25 Feb-25 $2.7 0.18M

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 6 6 Producing Assets 30 Development Assets 53 Exploration Assets 11 Advanced Exploration Assets Portfolio of assets focused solely on favorable mining jurisdictions in the Americas & Australia Producing Development Exploration Wharf Saddle North La Encantada Aranzazu La Guitarra La Parrilla San Luis Nueva Union Vizcachitas Castle Mountain Copper World Cote & Gosselin Garrison Detour DNA FMS Wasamac Lama CentroGold Taca Taca Endeavor Fosterville Amalgamated Kirkland Tocantinzinho

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 7 Gold 54.0% Copper 32.8% Silver 6.3% Other 6.9% NPV by Metal North America 50.9% South America 43.0% Australia 6.1% NPV by Continent Asset Portfolio Highlights H I G H G R O W T H P O R T F O L I O F O C U S E D O N G O L D , C O P P E R A N D S I L V E R I N S A F E J U R I S D I C T I O N S Source: Metalla internal model Exploration 0.5% Current Production 9.3% Development (Est. In Production by 2030) 40.7% Development (Long Term) 39.5% Advanced Exploration 10.0% NPV By Stage

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 8 Source: Company disclosure, FactSet, S&P Global Market Intelligence, street research Note: Top 10 assets based on Street consensus NPV. T O P 1 0 A S S E T S A V E R A G E M I N E L I F E ( Y E A R S ) N U M B E R O F T O P 1 0 A S S E T S W I T H $ 2 B O P E R A T O R 20 17 16 16 13 11 Metalla Sandstorm Triple Flag Osisko Gold Royalties Gold Royalty Elemen tal 8 8 5 3 4 2 Metalla Sandstorm Triple Flag Osisko Gold Royalties Gold Royalty Elemen tal A Focus on Asset Quality & Operator

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 9 Industry Leading Growth Profile E s t i m a t e d C o m p o u n d A n n u a l G r o w t h R a t e o f > 3 5 % o v e r 4 Y e a r s ** Based on management forecast and operator guidance. 2024E 2025E 2026E 2027E 2028-20 30 Production Growth (GEOs) Base Production (GEOs) + Endeavor + Amalgamated Kirkland + TZ – Full Year + La Parrilla + Endeavor – Full Year + Côté + 15 Mile Stream + Copper World + Fosterville + Castle Mountain + Taca Taca + Wasamac + Gosselin } Base Production Aranzazu Wharf El Realito La Encantada Tocantinzinho (TZ) La Guitarra ~2,500 4,000 6,500 ~ 15,000 – 30,000 8,000

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 0 Key Assets Ontario, Canada Metal Exposure: Gold 1.35% NSR – Development Estimated 496Koz Au per year for the first six years, expansion potential with inclusion of 7.4 Moz Gosselin deposit Revised mine plan to incorporate Gosselin expected in 2026 CÔTÉ & GOSSELIN Production Profile Estimate date of first royalty payment 2027 Côté estimated average annual GEO production ~ 400 Gosselin estimated average annual GEO production forecast available in year 2026 Please see section 1 in Notes.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 1 Key Assets TOCANTINZINHO Production Profile Q3-2024 attributable GEOs: 67 2025 Guidance GEO Forecast ~1,400 Average Annual GEO production ~1,300 Para State, Brazil Metal Exposure: Gold 0.75% GVR - Production Commercial production achieved September 2024 with estimated production of 175Koz per annum over ten and half years at a $681/oz AISC. Nameplate throughput target of 12,890 tpd by Q1- 2025 Over 2 Moz of gold in measured & indicated categories. Royalty covers over 28,000Ha on an underexplored land package in a known gold district. -- 200 400 600 800 1,000 1,200 1,400 1,600 1,800 2,000 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 Feasibility Study GEO Delivery Please see section 2 in Notes. GEO forecast based on royalty rate applied to Tocantinzinho Feasibility Study yearly production schedule.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 2 Cobar, Australia Metal Exposure: Zinc, Silver, Lead 4% NSR - Development Underground mine restart with excellent infrastructure. Recent restart plan projects a ten-year mine life producing 10.6Moz Ag, 260Kt Zn and 90Kt Pb. Financing & offtake has been secured to fund restart for H1-2025 production ENDEAVOR Production Profile Estimated mine restart H1-2025 2025 GEO Forecast ~1,100 Average Annual GEO production ~1,700 Key Assets -- 500 1,000 1,500 2,000 2,500 3,000 3,500 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 Yearly GEO Forecast Please see section 3 in Notes. GEO forecast based on royalty rate applied to Endeavor yearly production schedule net of 15% estimated NSR deductions

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 3 Castle Mountain 5.0% NSR ~2028 Amalgamated Kirkland 0.45% NSR H2 / 2025 Endeavor 4.0% NSR H1 / 2025 Côté/Gosselin 1.35% NSR ~2027/2030 Fosterville 2.5% GVR ~2027 Taca Taca 0.42% NSR ~2029 Copper World 0.315% NSR ~2028 New Luika 15% Ag Stream ~100 GEO/YR La Guitarra 2.0% NSR ~250 GEO/YR Aranzazu 1.0% NSR ~800 GEO/YR La Encantada 100% Au GVR ~250 GEO/YR Wharf 1.0% GVR ~800 GEO/YR Tocantinzinho 0.75% GVR ~1,300 GEO/YR Asset Portfolio Highlights H I G H G R O W T H P O R T F O L I O F O C U S E D O N G O L D , C O P P E R A N D S I L V E R O P E R A T E D B Y T I E R O N E C O U N T E R P A R T I E S *Est. GEOs/year are based on average of past performance and future estimates of guidance. Est. mine start based on management forecasts and operator guidance. Please refer to “Notes” for more information . Key Development Royalties Producing Royalties

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 4 $4 $5 $5 $6 $6 $7 $7 $8 $8 $9 $9 Jul 19 Jan 20 Jul 20 Jan 21 Jul 21 Jan 22 Jul 22 Jan 23 Jul 23 Jan 24 Jul 24 Jan 25 The Track Record SOURCE: Consensus broker research. Cortez Trend Wharf Mine Fosterville Higginsville Portfolio from Genesis GDXJ CentroGold Tocantinzinho Côté / Gosselin Castle Mountain Acquires royalty portfolio from Lama Acquires second royalty portfolio from Merges with Aranzanzu, Vizcachitas Copper World Nueva Union Taca Taca and 24 others 32 Transactions 100 Royalties / Streams Acquired $309M Capital Deployed $564M Consensus NAV NAV/Sh

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 5 $15.0 $41.2 Castle Mountain $41.2 The Track Record C O M B I N A T I O N O F C A S H F L O W A N D A C C R E T I O N A T T H E A S S E T - L E V E L D R I V E S S T R O N G N A V P S G R O W T H Investment Cash Flow Consensus NAV All amounts in United States Dollars $4.1 $5.9 $17.2 Genesis / Cortez $23.1 $9.0 $0.3 $23.4 Tocantinzinho $23.7 $8.6 $3.1 $44.3 Alamos Portfolio $47.4 $6.1 $52.3 Cote & Gosselin $52.3 $5.8 $6.3 $10.8 $17.1 Wharf $13.0 $16.7 $23.8 Coeur Portfolio $40.4 $125.8 $1.5 $268.4 Nova Portfolio $269.9

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 6 2.2x 2.1x 1.8x 1.3x 1.3x 1.0x 1.4x 1.0x 0.8x 0.8x 0.7x 0.5x 0.4x 0.4x WPM FNV RGLD TFPM OR SSL OGN ALS VO XR DRR ELE MTA GRO Y ECOR The Value Proposition Source: Consensus Broker Research

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 7 The Investment Thesis The Case for Valuation. Successful Track Record & Disciplined Capital Allocation Peer-Leading Growth Focused on Inflationary Metals Best In Class Jurisdictional Risk Profile Emerging Mid-Tier with Cornerstone Assets Best In Class Operator Risk Profile R O Y A L T Y C O M P A N Y D E L I V E R I N G I N D U S T R Y L E A D I N G G R O W T H Projected four-year > 35% CAGR on gold equivalent production from 2,500 to over ~8,500 ounces annually. Asset base focused solely on North America, South America, and Australia. 8 of top 10 assets held by > $2B operators and have an average 20-year life of mine. Over 100 royalties and streams with cornerstone assets, including Côté-Gosselin, Tocantinzinho, Taca Taca and Copper World. Experienced management team has acquired over 100 royalties in 34 value accretive transactions over 12 years. Trading at material NAV discount to peers with significant growth not reflected at current levels.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 8 M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | J a n u a r y 2 0 2 5 | 1 8 6 0 4 . 6 9 6 . 0 7 4 1 [email protected] CONTACT US Suite 501 – 543 Granville Street Vancouver, BC Canada V6C 1X8

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 1 9 The Leadership Team M a n d y J o h n s t o n N o n - E x e c u t i v e D i r e c t o r B r e t t H e a t h C E O & D i r e c t o r L a w r e n c e R o u l s t o n N o n - E x e c u t i v e C h a i r m a n J a m e s B e e b y N o n - E x e c u t i v e D i r e c t o r A l e x M o l y n e u x N o n - E x e c u t i v e D i r e c t o r E X P E R I E N C E D B O A R D W I T H A T R A C K R E C O R D O F S U C C E S S J a s o n C h o P r e s i d e n t S a u r a b h H a n d a C F O S u n n y S a r a V P A c q u i s i t i o n s Founder of Metalla – a metals and mining industry professional with 10 years of dedicated royalty and streaming experience. Accomplished mining executive with 25+ years experience in engineering, finance, portfolio management and corporate development focused in mining.. Chartered Professional Accountant with 15+ years experience in finance, accounting, M&A, and multi- jurisdictional reporting in the mining industry. Metals and mining industry professional with more than 5 years experience as an Economic Geology Research Analyst & gold prospector. Mining professional and geologist with over 35 years of diverse hands-on experience. Corporate lawyer with 20 years’ experience advising clients on corporate finance and M&A. CPA with 15+ years experience, formerly served as the VP Finance for Osisko Mining. Mining professional with 20+ years executive experience. Holds several executive and board positions. C h r i s B e e r N o n - E x e c u t i v e D i r e c t o r J o n a h T o w n s e n d D i r e c t o r o f F i n a n c e CPA with significant experience in metals and mining having previously worked at KPMG Canada’s mining practice with both Canadian and US listed public companies. 35+ years experience in mining finance and exploration, including 24 years as MD & Senior PM at RBC Global Asset Management.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 0 Arizona, USA Metal Exposure: Copper, Gold, Silver, Molybdenum 0.315% NSR - Development Estimated average annual GEO production ~ 1,100 Long-life cathode production of up to ~92Kt per annum in the first ten years Recent PFS outlined a two-phased mine plan with positive economics. Hudbay received the last outstanding permit in 2024. Hudbay intends to advance feasibility studies throughout 2025. towards a sanctioning decision in 2026. Key Assets COPPER WORLD Please see section 4 in Notes. GEO forecast based on royalty rate applied to Copper World Phase 1 yearly production schedule net of 15% estimated NSR deductions -- 200 400 600 800 1,000 1,200 1,400 1,600 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Copper World Phase 1 GEO Forecast

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 1 Salta, Argentina Metal Exposure: Copper, Gold, Molybdenum 0.42% NSR – Development – 32 year LOM Estimated average annual GEO production ~ 4,600 One of the largest undeveloped copper deposits in the Americas, with potential to reach annual recovered copper production of 227Kt per year for the first six years initial Environmental and Social Impact Assessment for the project was submitted in 2019 with final approval expected in 2025 Key Assets TACA TACA Please see section 5 in Notes. GEO forecast based on royalty rate applied to Taca Taca yearly production schedule net of 15% estimated NSR deductions -- 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Taca Taca Yearly GEO Forecast

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 2 South Dakota, USA Metal Exposure: Copper, Gold, Molybdenum 1.0% GVR – Production – 7-year LOM Estimated average annual GEO production ~ 800 2025 guidance of 90-100 Koz gold production. Open pit, heap leach operation located in the Northern Black Hills of South Dakota acquired by Coeur in February 2015 from Goldcorp Inc. for cash consideration of approximately $99.5 million. Wharf has been in production since 1983. Coeur acquired the asset in 2015 from Goldcorp Inc. (now Newmont Corporation) and subsequently increased plant efficiency and replaced reserves through exploration. Two new opportunities, North Foley and Juno, were recently identified with the potential to meaningfully extend Wharf’s mine life Key Assets WHARF 200 300 400 500 600 700 800 900 1000 2021 2022 2023 2024 (est) Reliable GEO Delivery Please see section 6 in Notes.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 3 Zacatecas, Mexico Metal Exposure: Copper, Gold, Silver 1% NSR - Producing Estimated average annual GEO production ~ 800 Steady producer with history of strong cash margins with 88 – 97 GEOs guided for 2025 Increased 2P by 53% net of depletion since restarting in 2018. ~29,400m drill program was completed in 2024. ARANZAZU Key Assets Production Profile 2025 GEO Guidance ~800 Average Annual GEO production ~800 200 300 400 500 600 700 800 900 1000 2021 2022 2023 2024 (est) Reliable GEO Delivery Please see section 7 in Notes.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 4 Rouyn-Noranda, Quebec Metal Exposure: Gold 1.5% NSR - Development Estimated average annual GEO production ~ 3,000 2P mineral reserves – 1.3 Moz Au at 2.9 g/t Indicated mineral resources - 667 Koz Au at 2.19 g/t Inferred mineral resources - 312 Koz Au at 2.48 g/t Underground bulk mining operation. Studies are ongoing for ore to be processed at Agnico Eagle’s Canadian Malartic Mill. WASAMAC MINE Key Assets Central Chile Metal Exposure: Copper, Silver, Molybdenum 0.98% NSR - Development Estimated average annual GEO production ~ 4,600 Recent PFS outlined robust economics with an annual copper production of 183Kt for the first eight years Located in the Chilean copper belt, surrounded by multiple world-class operations. Feasibility Study expected in 2025 and potential commencement of production in 2030. VIZCACHITAS Please see section 8 and 9 in Notes.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 5 San Bernardino, California Metal Exposure: Gold 5.0% NSR – Development (Phase 2) Estimated average annual GEO production ~ 5,000 Covers South Dome pit that currently hosts a 1.1Moz 2P Reserve which is the higher-grade section of the mining complex Currently operating in phase 1, Castle is anticipated to enter in phase 2 expansion with potential to make it one of the top ten gold mine in the USA which includes South Domes. CASTLE MOUNTAIN MINE Key Assets Bendigo, Australia Metal Exposure: Gold 2.5% GVR – Development Covers the southeastern and northeastern sections of Fosterville mining lease and large area east and south of the mining lease. Mineralization at the Harrier and Phoenix/Swan Zone are on strike with the royalty grounds in the south. Metalla expects Harrier and Phoenix mineralization to continue onto the royalty area as exploration drilling continues to extend mineralization. FOSTERVILLE Please see section 10 and 11 in Notes.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 6 The Track Record C O M B I N A T I O N O F C A S H F L O W A N D A C C R E T I O N A T T H E A S S E T - L E V E L D R I V E S S T R O N G N A V P S G R O W T H All amounts in US$MM as at January 21, 2025 $29 $309 $564 $272 0 100 200 300 400 500 600 Portfolio Investment Consensus NAV Enterprise Value + Portfolio Return Portfolio Investment Cash Flow / Revenue Since Inception Portfolio Consensus NAV Enterprise Value

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 7 Our Assets E X P L O R A T I O N P R O P E R T Y O P E R A T O R L O C A T I O N M E T A L T E R M S Bancroft Transition Metals Ontario, Canada Au 1.0% NSR Beaudoin Explor Resources Timmins, Ontario Au, Ag 0.4% NSR Big Island Voyageur Flin Flon, Manitoba Au 2.0% NSR Bint Property Glencore Timmins, Ontario Au 2.0% NSR Biricu Minaurum Gold Guerrero, Mexico Au, Ag 2.0% NSR + $10/oz Ag Boulevard Independence Gold Yukon Au 1.0% NSR Caldera Metalla Nye County, NV Au 1.0% NSR Camflo Agnico Eagle Val d'Or, Quebec Au 1.0% NSR Capricho Pucara Peru Au, Ag 1.0% NSR Colbert/Anglo Newmont Timmins, Ontario Au 2.0% NSR Copper King Pacific Empire BC, Canada Cu 1.0% NSR COSE Mine Pan American Silver Santa Cruz, Argentina Ag, Au 1.5% NSR Royalty DeSantis Mine Canadian Gold Miner Timmins, Ontario Au 1.5% NSR Detour DNA Agnico Eagle Cochrane, Canada Au 2.0% NSR Dundonald Transition Metals Canada Cu, Ni 1.25% NSR Edwards Mine Alamos Gold Wawa, Ontario Au 1.25% NSR Elephant Head Transition Metals Canada Au 1.0% NSR Fenn-Gibb South Mayfair Gold Timmins, Ontario Au 1.4% NSR Fortuity 89 Metalla Nevada, USA Au 1.5% NSR Golden Brew Highway 50 Gold Nevada, USA Au 0.5% NSR Royalty Golden Dome Warriedar Resources Nevada, USA Au 2.0% NSR Royalty Goodfish Kirana Kirkland Lake Discoveries Kirkland Lake, Ontario Au 1.0% NSR Green Springs Orla Mining White Pine, NV Au 1.0-2.0% NSR Homathko Transition Metals Canada Au 1.0% NSR Island Mountain Tuvera Elko, NV Au 1.0% - 2.0% NSR Janice Lake Forum Energy Canada Cu, Ag 1.0% NSR Jersey Valley Abacus Mining Pershing, NV Au 1.0% NSR Kings Canyon Pine Cliff Millard, UT Au 1.0% - 2.0% NSR Kirkland-Hudson Agnico Eagle Kirkland Lake, Ontario Au 2.0% NSR La Luz First Majestic San Luis Potosi, Mexico Ag 2.0% NSR Los Patos Private Venezuela Au 1.5% NSR Maude Lake Transition Metals Canada Ni, Cu 1.0% NSR Mirado Mine Orefinders Kirkland Lake, Ontario Au 1.0% NSR + Option Montclerg IEP Timmins, Ontario Au 1.0% NSR North AK Agnico Eagle Kirkland Lake, Ontario Au 0.45% NSR Northshore West Newpath Resources Ontario Au 2.0% NSR Nub East Pacific Empire Canada Cu, Au 1.0% NSR NWT Pacific Empire Canada Cu 1.0% NSR Orion Minera Frisco Nayarit, Mexico Au, Ag 2.75% NSR Pelangio Poirier Pelangio Exp. Timmins, Ontario Au 1.0% NSR Pinnacle Pacific Empire Canada Cu, Au 1.0% NSR Pucarana Buenaventura Peru Au, Ag 1.8% NSR Option Puchildiza Metalla Chile Au 1.5% NSR Ronda Platinex Timmins, Ontario Au 2.0% NSR Santo Tomas Pucara Peru Au 1.0% NSR Saturday Night Transition Metals Canada Ni, Cu 1.0% NSR Sirola Grenfell Pelangio Exp. Kirkland Lake, Ontario Au 0.25% NSR Solomon's Pillar Sage Gold Greenstone, Ontario Au 1.0% NSR Tower Mountain Thunder Gold Thunder Bay, Ontario Au 2% NSR West Matachewan Transition Metals Canada Au 1.0% NSR Wollaston Copper Transition Metals Canada Cu 1.0% NSR P R O D U C T I O N P R O P E R T Y O P E R A T O R L O C A T I O N M E T A L T E R M S Aranzazu Aura Minerals Zacatecas, Mexico Cu, Au, Ag 1% NSR El Realito Agnico Eagle Sonora, Mexico Ag, Au 2.0% NSR (subject to a 1% buyback) La Encantada First Majestic Silver Coahuila, Mexico Ag, Au 100% Gold GVR New Luika Shanta Gold Tanzania Au Stream on 15% of Ag Tocantinzinho G Mining Para, Brazil Au 0.75% NSR Royalty Wharf Mine Coeur Mining South Dakota, USA Au 1.0% NSR Royalty D E V E L O P M E N T Akasaba West Agnico Eagle Val d'Or, Quebec Au, Cu 2.0% NSR, payable after 210 Koz Au Amalgamated Kirkland Agnico Eagle Kirkland Lake, Ontario Au 0.45% NSR Anglo / Zeke Nevada Gold Mines Nevada, USA Au 0.5% GOR Carlin East Ridgeline Minerals Elko, NV Au 1.0-2.0% NSR Castle Mountain Equinox Gold California, USA Au 5% NSR (South Dome) CentroGold BHP Maranhão, Brazil Au 1-2% NSR Royalty Copper World Hudbay Arizona, USA Cu, Mo, Ag 0.32% NSR Côté / Gosselin IAMGOLD Gogama, Ontario Au 1.35% NSR Dumont Nion Nickel Quebec, Canada Ni 2.0% NSR (subject to 1.0% buyback) Endeavor Mine Polymetals NSW Australia Zn, Pb, Ag 4.0% NSR Esperanza Zacatecas Silver Morelos, Mexico Ag 20% Ag Stream, capped at 500 Koz of Ag Fifteen Mile Stream St Barbara Halifax, Nova Scotia Au 1.0% NSR Royalty FMS Plenty St. Barbara Halfiax, Nova Scotia Au 3.0% NSR Royalty Fosterville Agnico Eagle Victoria, Australia Au 2.5% GVR Garrison Mine STLLR Gold Kirkland Lake, Ontario Au 2.0% NSR Royalty Hoyle Pond Ext. Newmont Timmins, Ontario Au 2.0% NSR, subject to 500 Koz exemption Josemaria Lundin Mining Argentina Cu, Au, Ag 0.08325% NPI La Fortuna Minera Alamos Durango, Mexico Au, Ag, Cu 3.5% NSR (2.5% capped at US$4.5M) Joaquin Mine Pan American Silver Santa Cruz, Argentina Ag, Au 2.0% NSR Royalty La Guitarra Sierra Madre Mexico State, Mexico Ag, Au 2% NSR La Parilla Silver Storm Durango, Mexico Ag, Pb 2% NSR Lama Barrick Gold San Juan, Argentina Au, Ag, Cu 2.5-3.75% GVR Au, Ag, 0.25-3.0% NSR Cu NuevaUnion Teck Resources / Newmont Atacama, Chile Au 2.0% NSR Pine Valley Nevada Gold Mines Nevada, USA Au 3.0% NSR Royalty (subject to a 1.5% buyback) Red Hill NuLegacy Gold Nevada, USA Au 1.5% GOR Santa Gertrudis Agnico Eagle Sonora, Mexico Au, Ag 2.0% NSR Royalty (subject to a 1.0% buyback) Taca Taca First Quantum Argentina Cu, Mo, Ag 0.42% NSR Timmins West Ext. Pan American Silver Timmins, Ontario Au 1.5% NSR (subject to a 0.75% buyback) TVZ Zone Newmont Timmins, Ontario Au 2.0% NSR Vizcachitas Los Andes Chile Cu, Mo, Ag 0.98% NSR Wasamac Agnico Eagle Val d'Or, Quebec Au 1.5% NSR (subject to a 0.5% buyback) A D V A N C E D E X P L O R A T I O N Aureus East Aurelius Minerals Halifax, Nova Scotia Au 1.0% NSR Big Springs / Golden Dome Anova Metals Elko, NV Au 2% NSR Del Toro First Majestic Silver Zacatecas Ag, Au 2% NSR La Joya Silver Dollar Durango, Mexico Ag, Au 2% NSR Lac Pelletier Maritime Resources Quebec, Canada Au 1% NSR Plomosas GR Silver Sinaloa, Mexico Ag, Au 2.0% NSR (subject to a 1% buyback) San Luis Highlander Silver Peru Ag, Au 1.0% NSR San Martin First Majestic Silver Jalisco, Mexico Ag, Au 2% NSR Saddle North Newmont British Columbia Au, Cu 0.25% NSR West Wall Anglo American / Glencore Chile Cu, Mo, Ag 1.0% Net Proceeds Production Royalty Zaruma Pelorus Capital Ecuador Au 1.5% NSR

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 8 Notes (1) For details, please refer to IAMGOLD’s October 15, 2024 Press Release, 2023 Annual Information Form and IAMGOLD’s Press Release dated October 23, 2023 available at sedarplus.ca. Annual GEOs calculated by applying the royalty rate and 6% Cote royalty coverage to life of mine average production. Royalty coverage is based on management estimates. (2) For details, please refer to the Feasibility Study – NI 43-101 Technical Report for the Tocantinzinho Gold Project with an effective date of December 10, 2021 and the G Mining Ventures’ Press Release dated September 12, 2023 and Press Release dated January 21, 2025. Annual GEOs calculated by applying royalty rate to life of mine average production. (3) For details, please refer to the Polymetals Resources’ Mine Restart Study for the Endeavor Mine dated October 16 2023 and Polymetals Resources’ Improved Endeavor Silver Lead Zinc Mine Plan dated August 5 2024 and filed on ASX.com.au. Annual GEOs derived from Polymetals Resources’ Mine Restart Study page 9 Financial Model Summary royalty revenue estimate and management forecasts. (4) For details, please refer to the NI 43-101 Technical Report, Copper World Complex, Pima County, Arizona USA, with an effective date of May 1, 2022, Hudbay Minerals’ 2022 Annual Information Form and the Information outlined on www.copperworldaz.com and the Copper World Pre-Feasibility Study dated September 8, 2023. Annual GEOs calculated by applying royalty rate to average annual copper production revenues over phase 1 divided by gold price (5) For details, please refer to the Taca Taca Project, Salta Province Argentina, Amended and Restated NI 43-101 Technical Report issued March 30, 2021 and First Quantum Minerals’ Q3 2023 MD&A. Annual GEOs calculated by applying royalty rate to annual peak production revenues divided by gold price. (6) For details, please refer to Coeur Mining’s 2023 Annual Information Form and Coeur Mining’s Q4 2024 Management Discussion and Analysis 10-Q SEC Filing report. Annual GEOs calculated by applying royalty rate to 2025 production guidance (7) For details, please refer to the Feasibility Study of the Re-Opening of the Aranzazu Mine, Zacatecas, Mexico with an effective date of January 31, 2018 and Aura Minerals’ 2023 Annual Information Form. Aura Minerals press released dated February 28 2025 and August 7 2023. Annual GEOs calculated by applying royalty rate to 2025 production guidance (8) For details, please refer to Agnico Eagle Mines’ February 13, 2025 press release, Q2 2023 and Q3 2023 Financial Statements and Yamana Gold’s 2023 Annual Information Form. Annual GEOs calculated by applying royalty rate to annual gold production guidance. (9) For details, please refer to the Vizcachitas Project Pre-Feasibility Study, Valparaiso Region, Chile, NI 43-101 Technical Report, with an effective date of February 20, 2023 and the Los Andes Copper’s 2022 Annual Information Form. Annual GEOs calculated by applying royalty rate and 50% coverage rate to annual copper production revenues divided by gold price. (10) For details, please refer to the Technical Report for the Castle Mountain Project Feasibility Study with an effective date of February 26, 2021, NI 43-101 Technical Report on the Preliminary Feasibility Study for the Castle Mountain Project dated August 28, 2018 and Equinox Gold’s Q3 2023 Management and Discussion available on sedarplus.ca. Annual GEOs calculated using 2021 Feasibility Study financial model Huntington Tile Royalty revenue over life of paying royalty mine. Numbers may not add due to rounding All GEOs calculated using consensus long term broker estimates of $2,125/oz gold price, $4.25 copper price. Metalla has limited, if any, access to the properties on which Metalla holds a royalty, stream or other interest. Metalla is dependent on (i) the operators of the mines or properties and their qualified persons to provide technical or other information to Metalla, or (ii) publicly available information to prepare disclosure pertaining to properties and operations on the mines or properties on which Metalla holds a royalty, stream or other interest, and generally has limited or no ability to independently verify such information. Although Metalla does not have any knowledge that such information may not be accurate, the Company has not independently verified this information and there can be no assurance that such third-party information is complete or accurate. Some information publicly reported by operators may relate to a larger property than the area covered by Metalla's royalty, stream or other interests. Metalla's royalty, stream or other interests can cover less than 100% and sometimes only a portion of the publicly reported mineral reserves, resources and production of a property. Unless otherwise indicated, the technical and scientific disclosure contained or referenced in this prsentation, including any references to mineral resources or mineral reserves, was prepared in accordance with Canadian NI 43-101, which differs significantly from the requirements of the U.S. Securities and Exchange Commission (the “SEC”) applicable to U.S. domestic issuers. Accordingly, the scientific and technical information contained or referenced in this presentation may not be comparable to similar information made public by U.S. companies subject to the reporting and disclosure requirements of the SEC. “Inferred mineral resources” have a great amount of uncertainty as to their existence and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Historical results or feasibility models presented herein are not guarantees or expectations of future performance. Metalla has included certain performance measures in this press release that do not have any standardized meaning prescribed by International Financial Reporting Standards (IFRS) including attributable gold equivalent ounces (GEOs). The Company believes that, in addition to conventional measures prepared in accordance with IFRS, certain investors use this information to evaluate the Company's performance and ability to generate cash flow. Attributable GEOs are a non-IFRS financial measure that is composed of gold ounces attributable to the Company, plus an amount calculated by taking the expected revenue by the Company from payable silver ounces, copper pounds, lead pounds and zinc pounds attributable to the Company, less material costs, divided by the price of gold. The Company presents attributable GEOs as it believes that certain investors use this information to evaluate the Company’s performance in comparison to other streaming and royalty companies in the precious metals mining industry who present attributable ounces on a similar basis The presentation of these non-IFRS financial measures is intended to provide additional information and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. Other companies may calculate these non-IFRS financial measures differently. Future-Oriented Financial Information This presentation contains future-oriented financial information and financial outlook information (collectively, "FOFI") about Metalla and anticipated GEOs from its portfolio and which is subject to the assumptions, risk factors, limitations and qualifications as set forth in this presentation. FOFI contained in this presentation was made as of the date of this presentation and was provided for the purpose of providing further information about Metalla's anticipated future business operations. Metalla disclaims any intention or obligation to update or revise any FOFI contained in this presentation, whether as a result of new information, future events or otherwise, unless required pursuant to applicable law. FOFI contained in this news release should not be used for purposes other than for which it is disclosed herein. Q U A L I F I E D P E R S O N The technical information contained in this presentation has been reviewed and approved by Charles Beaudry, geologist M.Sc., member of the Association of Professional Geoscientists of Ontario and of the Ordre des Géologues du Québec and a consultant to Metalla. Mr. Beaudry is a QP as defined in National Instrument 43-101 Standards of Disclosure for Mineral Projects.

M E T A L L A R O Y A L T Y & S T R E A M I N G ( M T A - N Y S E ) | M a r c h 2 0 2 5 | 2 9 NYSE & TSXV: MTA METALLAROYALTY.COM