Decimus Oil Corp. · TSXV:WCSB

Decimus Oil — Investor Presentation (December 2025)

25 slides from Decimus Oil's investor presentation, Dec 1, 2025

  1. Slide 1: Corporate Presentation Q3 & $3.4mm Financing

    Corporate Presentation Q3 & $3.4mm Financing Unlocking a vast resource opportunity in Southern Alberta 2025 TSXV:WCSB

  2. Slide 2: Company Overview & Snapshot

    2 Company Overview & Snapshot Decimus Oil Corp. (TSXV:WCSB) is a Canadian oil and gas exploration company, focused on unlocking the hydrocarbon potential in the Mannville formation located in Southern Alberta. Targeting this geologically complex and economically significant Lower Cretaceous formatio

  3. Slide 3: Unlocking the next 10x resource opportunity in Southern Alberta

    3 10x “Decimus” is a Latin word meaning of “tenth” Unlocking the next 10x resource opportunity in Southern Alberta TSXV:WCSB

  4. Slide 4: Decimus Advantage

    4 Decimus Advantage Concentrated Strategically positioned in Southeast Alberta with over 16,000 net acres (post -Acquisition) in one of Canada’s newest Land Position emerging oil plays Track record: achieved production growth of 264% Compounded Annual Growth Rate (CAGR) – since recapitalizing in Q4/

  5. Slide 5: $3.4mm Private Placement

    5 $3.4mm Private Placement Production Forecast Use of Proceeds 500 ($m) Production Additions 450 Bantry Acquisition cost $0.10 400 Capital program to reactivate Bantry fields $0.55 +127 boe/d 350 300 254 Q4 2025 Capital program $2.01 +139 boe/d Boe/d 250 Working capital $0.49 200 223 Financing Fee’s

  6. Slide 6: Bantry Acquisition

    6 Bantry Acquisition Strategically located in the heart of the play, Bantry Acquisition provides high-grade development and exploration opportunities Overview Area Map • Owned and operated facilities • Production: ~127 boe/d (100% gas) (shut-in since Sept/24 due to low AECO prices) – reactivating fi

  7. Slide 7: History of the Company

    7 History of the Company Continue to pursue growth and create sustainable long-term shareholder value through strategic acquisitions while unlocking stranded low risk development opportunities Achieved production growth of 264% (CAGR) since recapitalizing the Company in 2021. 2025 2024 2023 2022 o C

  8. Slide 8: Corporate Strategy

    8 Corporate Strategy Decimus is well-positioned to capitalize on a market recovery through its high-quality production base and ample low-cost drilling opportunities Accretive per share growth o Well positio ned to scale thr ough acquisitio ns o Target acquisition s with the highest a ccretion per s

  9. Slide 9: Our Performance Dashboard

    9 Our Performance Dashboard Minimal ARO Liabilities supported by low-decline production base with a TPP Reserve Life Index (RLI) of 27 years. 264% PRODUCTION 176 Boe/d $8.6mm GROWTH (CAGR) Q2 25 Production TP $5.0mm & TPP $8.6mm 200 NPV10% 180 160 140 $24.1M 120 305 TAX POOLS 100 605 80 60 360 40 32

  10. Slide 10: Balanced, diverse asset portfolio

    10 Balanced, diverse asset portfolio Decimus production is balanced across several areas minimizing concentration risk and require minimal maintenance capital in lower price environments. Production Mix Q2 2025 Light & Heavy Oil (bbls/d) 78 NGLs (bbls/d) 2 Natural Gas (mcf/d) 571 Total Production (B

  11. Slide 11: Land Position & Recent Mannville Transactions

    11 Land Position & Recent Mannville Transactions Decimus owns 16,292 net acres of developed & undeveloped lands in Southern Alberta with multi-zone opportunities within its portfolio (excluding Bantry Acq.) Area & Targeted Formation Land Opportunities Unbooked Development Plan (4) Developed (1,2) Un

  12. Slide 12: Recent Drilling Activity & Land Update

    12 Recent Drilling Activity & Land Update Strategically located land position with multi-stack horizon, including the Mannville Basal Quartz (BQ) which provides high-grade development and exploration opportunities Recent Drilling Activity Proven Oil Potential and Evolving D&C Practices • Attractive

  13. Slide 13: Technological Drilling Advancements

    13 Technological Drilling Advancements Higher intensity completions are helping to unlock a vast resource contained within the lower permeability formation Recovery Factor vs Fracture Spacing Case Study – Frac Spacing Map 9% 8% 7% Recovery Factor (%) 6% 5% 4% 14-04-025-17W4 01-09-025-17W4 1 JT Frac

  14. Slide 14: Mannville BQ Case Study

    14 Mannville BQ Case Study Best producing pools in the Mannville Basal Quartz (BQ) combined have drilled 96 wells producing in excess of 3.7MMbbl oil + 11.98Bcf gas (~5.69MMboe) Suede – Wintering Hills – Net Pay Suede – Gem – Net Pay Wintering Hills 59 wells have produced >2.25MMbbl oil + 7.2Bcf gas

  15. Slide 15: Well Economics

    15 Well Economics Improved completion techniques = enhanced recoveries and higher economics Type Curve Hztl Well Performance Single BQ Well Economics 250 Single Well Economics – US $WTI $70/AECO $2.25 Flat PUD P+PUD Capex/well ($m) $3.155 200 IP30 – boe/d 362 150 Reserves EUR/well (Mboe) 285.4 Oil R

  16. Slide 16: Maintained Cash Flows

    16 Maintained Cash Flows Maintained cash flow profile through the commodity price downturn with torque to future recovery in both WTI & AECO pricing. $500,000 $140.00 $400,000 $117.11 $120.00 $300,000 $96.22 $96.80 $100.00 $91.61 $91.10 $86.35 $87.33 $85.11 $83.83 $200,000 Realized Price ($/bbl) $77

  17. Slide 17: Energy Infrastructure

    17 Energy Infrastructure Our energy infrastructure and waste management facilities are strategically located in Southern Alberta, which enables us to handle third-party produced water, emulsion, treating and water disposal at our 100% owned facilities. Vulcan Murray Lake • 100% owned and operates a

  18. Slide 18: Reserves Volumes & Values – December 31, 2024

    18 Reserves Volumes & Values – December 31, 2024 Company’s assets include long-life reserves, of over 965Mboe (2P), which equates to a Reserve Life Index (RLI) of 27 years (4) Reserve Category (1) Oil Gas NGL Total NPV10% Liq % 305 mbbl mmcf mbbl Mboe $mm PDP 144 953 2 305 48% $2.29 605 965 1P 144 3

  19. Slide 19: Leadership Team

    19 Leadership Team Cameron Sonja Neil Scott Diane MacDonald Kuehnle Wilson Kober Scott President & VP Finance & Engineering & Business Land CEO CFO Operations Development Mr. MacDonald brings Mrs. Kuehnle is a Mr. Wilson brings over 26 Mr. Kober brings over 20 Ms. Scott brings over 30 over 20 years

  20. Slide 20: Board of Directors

    20 Board of Directors Cameron Ron Brian Scott Martin MacDonald Hozjan Prokop Reeves Malek Chairman & Independent Independent Director & Strategic CEO Director Director Corporate Sec. Advisor Mr. MacDonald brings Mr. Hozjan bringing over Mr. Prokop brings over 40 Mr. Reeves is a partner Mr. Martin br

  21. Slide 21: Investment thesis

    21 Investment thesis Concentrated Land o Strategically positioned in Southeast Alberta with over 16,000 net acres in one of Canada’s Position newest emerging oil plays o Track record: achieved production growth of 264% Compounded Annual Growth Rate (CAGR) Historic Growth – since recapitalizing in Q4

  22. Slide 22: Decimus Oil Corp.

    22 Decimus Oil Corp. TSXV: WCSB Address #1250, 639 5th Avenue S.W. Calgary, Alberta, T2R 1S4 Canada Contact Number Investor Relations Dean Stuart (403) 617-7609 Transfer Agent Odyssey Trust Company Email Address [email protected] Auditors Crowe & MacKay LLP TSXV:WCSB

  23. Slide 23: Hays

    23 Hays Exploration opportunity with +12 unbooked future horizonal BQ drilling locations Overview Single BQ Well Economics • Land: 4.5 sections (99%) working interest (“B”) Single Well Economics – US $WTI $70/AECO $2.25 Flat • Currently producing 25 boe/d from 2x existing Lwr Mannville wells • 14x n

  24. Slide 24: Murray Lake

    24 Murray Lake Potential exists to increase Recovery Factors (RF) paired with new development techniques to improve play economics Overview Single BQ Well Economics • Since implementing waterflood program in 2008, pool has demonstrated a ~3% annual Single Well Economics – US $WTI $70/AECO $2.25 Flat

  25. Slide 25: Dinosaur & Patricia

    25 Dinosaur & Patricia Low risk production profile with future low risk workover program Overview Workover Program Economics • 49% Working Interest in Two Units Operated by Taqa North (Patricia & Dinosaur) Future Gas Development – 107 recompletion wells • 25% Working Interest (WI) in 8 Non-Unit well

Decimus Oil — Investor Presentation (December 2025) on 6ix