Press Release: TOURMALINE ACHIEVES RECORD PRODUCTION, ADDS 829 MILLION BOE OF 2P RESERVES AND REDUCES 2026 EP CAPEX

Dow Jones03-05 06:00

CALGARY, AB, March 4, 2026 /CNW/ - Tourmaline Oil Corp. (TSX: TOU) ("Tourmaline" or the "Company") is pleased to release financial and operating results for the full year and fourth quarter of 2025.

HIGHLIGHTS

   -- Record Q4 2025 average production of 659,204 boepd and January 2026 
      average production of over 685,000 boepd. 
 
   -- 829 million boe proved plus probable ("2P") reserve addition in 2025, 
      including a corporate record single year organic 2P reserve addition of 
      457 million boe, both after accounting for 2025 production. 
 
   -- Continued corporate operating costs reduction in Q4 2025, down over 9% 
      from the first half of 2025 to $4.66/boe. 
 
   -- Peace River High ("PRH") asset sale completed in February 2026 for 
      proceeds of $765 million, prior to customary closing adjustments. 
 
   -- 2026 forecasted EP capital expenditures reduced by $350 million as the 
      Company remains focused on optimizing free cash flow(1)(2) ("FCF"). 
 
   -- Quarterly base dividend of $0.50/share to be paid on March 31, 2026 to 
      shareholders of record at the close of business on March 16, 2026. 
 
   -- Net debt(3) at year-end 2025 of $1.5 billion, inclusive of the impact of 
      the PRH asset sale, or 0.45x forecasted 2026 cash flow(4) ("CF"), down 
      from Q3 2025 net debt of $2.3 billion. 

PRODUCTION UPDATE

   -- Record Q4 2025 average production of 659,204 boepd, within the previous 
      Q4 guidance range of 655,000 - 665,000 boepd. 
 
   -- Q4 2025 average liquids production (oil, condensate, NGLs) was also a 
      record at 152,673 bbls/d. 
 
   -- January 2026 production averaged over 685,000 boepd prior to the impact 
      of the PRH asset sale, a new record and ahead of expectations. 
 
   -- First quarter 2026 average production of 660,000 - 670,000 boepd is 
      anticipated, after taking into account the sale of the PRH assets which 
      closed on February 2, 2026. 
 
   -- In order to improve operating netbacks(5), Tourmaline has elected to 
      terminate its discretionary deep cut gas plant deliveries in the Alberta 
      Deep Basin in 2026 as contracts expire. This will reduce corporate 
      average ethane production volumes by approximately 20,000 bpd on a full 
      year basis but is expected to increase forecasted 2026 operating netback 
      by approximately $65 million and forecasted 2027 operating netback by 
      approximately $110 million through the elimination of deep cut processing 
      fees as well as C2+ transportation and fractionation fees. 

FINANCIAL RESULTS

   -- Q4 2025 CF was $890 million ($2.29 per fully diluted share(6)). Full year 
      2025 CF was $3.4 billion ($8.84 per fully diluted share). 
 
   -- Tourmaline sold its PRH complex to a Canadian senior producer for cash 
      proceeds of $765 million, prior to customary closing adjustments. Through 
      this transaction, Tourmaline has sold its most mature, highest-cost 
      production and will replace it with new low-cost production streams 
      flowing through newly constructed Tourmaline facilities. Although 
      Tourmaline pioneered the Charlie Lake horizontal play in 2009-2010, this 
      disposition will allow the Company to enhance its focus on the Company's 
      two massive gas complexes. Tourmaline intends to utilize approximately 
      $500 million of the proceeds of this disposition for permanent long-term 
      debt reduction and approximately $265 million for the NEBC infrastructure 
      buildout over the next two years. 
 
   -- Net debt at year end 2025 was $1.5 billion, inclusive of the impact of 
      the PRH asset sale, and down from Q3 2025 net debt of $2.3 billion. The 
      Company is setting a long-term net debt target of $1.75 billion 
      (approximately 0.5x net debt to cash flow). 

CAPITAL BUDGET/EP PLAN

   -- The multi-year EP Plan has been updated for full year 2025 results, asset 
      sales, strong well performance, new commodity hedges, and cost reduction 
      initiatives realized to date. 
 
   -- The Company believes that during these unusually volatile times, the 
      optimal business approach is to steadily reduce debt and continuously 
      improve the overall cost structure. The Company is already executing on 
      this plan. 
 
   -- Q4 2025 EP capital spending was $812.7 million, within the original 
      quarterly guidance range. Full year 2025 EP capital spending was $2.93 
      billion. 
 
   -- The PRH asset sale and the redirection of discretionary Deep Basin deep 
      cut volumes will reduce total corporate production by a total of 
      approximately 50,000 boepd on a full year basis. Q1 2026 average 
      production of 660,000 - 670,000 boepd is now expected (which includes 
      Deep Basin deep cut production volumes for the entire quarter and PRH 
      production volumes until February 2, 2026). The full year 2026 
      anticipated average production range is now 620,000 - 640,000 boepd. 
 
   -- The 2026 full year EP capital program will be reduced by $350 million to 
      $2.55 billion along with a $50 million cut in non-EP capital for a total 
      capital expenditure reduction of $400 million. This reduction includes 
      $175 million of the originally planned 2026 EP capex in the PRH complex 
      and $175 million of expenditures in the gas complexes. The Company 
      believes it is prudent to defer certain gas-focused expenditures until a 
      sustained, stronger local price environment materializes. The gas complex 
      expenditure reduction will have a negligible impact on production 
      guidance (1.0%) given stronger than anticipated 2026 well performance to 
      date. The Company has identified an additional $200 million of drilling 
      and completion capital that could be deferred from the 2026 EP capital 
      program if commodity prices deteriorate further. 
 
   -- At strip pricing(7), Tourmaline's revised EP Plan anticipates 2026 CF of 
      $3.4 billion and FCF of $0.7 billion. All else equal for every US 
      $0.10/mcf that AECO pricing improves, Tourmaline's 2026 CF and FCF 
      increase by approximately $45 million. Similarly, for every US $1.00/mcf 
      that both JKM and TTF pricing improve, Tourmaline's 2026 CF and FCF 
      increase by approximately $50 million and Tourmaline's 2027 CF and FCF 
      increase by approximately $70 million. 

2025 RESERVES

   -- Year-end 2025 proved developed producing ("PDP") reserves(8) of 1.47 
      billion boe were up 27% after accounting for 2025 annual production of 
      233 million boe. Total proved ("TP") reserves of 3.26 billion boe were up 
      20% after accounting for 2025 production. 2P reserves of 6.09 billion boe 
      were up 15% after accounting for 2025 production. 
 
   -- The 2025 2P organic reserve addition of 457 million boe was the largest 
      single year organic 2P addition in corporate history. 
 
   -- After 17 years of operations, Tourmaline now has 27.7 TCF of economic 2P 
      natural gas reserves and 1.48 billion barrels of 2P oil, condensate and 
      NGL reserves, all of which are pipeline-connected to markets across North 
      America. At year-end 2025, 15.4% of the current internally estimated 
      drilling inventory of 26,512 gross locations was booked in the 2025 
      year-end reserve report. 
 
   -- Year-end 2025 oil, condensate and NGL 2P reserves of 1.48 billion barrels 
      represent the second largest conventional liquids reserve base in Canada, 
      based on public disclosure. 
 
   -- Tourmaline has only booked 4,073 gross locations of a total drilling 
      inventory of 26,512 gross locations (15.4% of the overall inventory) to 
      achieve year-end 2025 2P reserves of 6.1 billion boe. 
 
   -- Tourmaline replaced 356% of its 2025 annual production of 233 million boe 
      with 2P additions of 829 million boe, including 2025 production. 
 
   -- Tourmaline's 2025 PDP finding and development ("F&D") costs were $9.81 
      per boe including changes in future development capital ("FDC"), yielding 
      a PDP reserve recycle ratio of 1.5 times. TP finding, development and 
      acquisition ("FD&A") costs in 2025 were $10.95 per boe, including changes 
      in FDC. 2P FD&A costs in 2025 were $9.09 per boe, including changes in 
      FDC. 
 
   -- The Company elected to increase drill and complete costs across the 
      entire booked inventory (4,073 gross locations) to reflect the steady 
      migration to longer horizontals and an increasing percentage of plug and 
      perf style completions. Future facility capital was also increased to 
      reflect the Company's planned NEBC infrastructure buildout. These 2025 
      additions to the Company's total FDC amount incorporated in the year-end 
      2025 reserve report resulted in a $3.21/boe increase to the Company's 
      2025 2P FD&A including FDC and an increase of $4.61/boe to the Company's 
      2P F&D costs including FDC. These additions to the Company's total FDC 
      amounts are not expected to reoccur in future reserve reports. 2025 2P 
      FD&A costs including the increased FDC were $9.09/boe, compared to 5-year 
      2P FD&A costs of $7.74/boe, including changes in FDC. 
 
   -- Tourmaline's 2P reserve value (before taxes) equates to $98.86 per 
      diluted share (after tax reserve value of $75.66 per diluted share) using 
      the January 1, 2026 engineering price deck and a 10% discount rate. TP 
      reserve value (before tax) is $64.06 per diluted share and $50.43 per 
      diluted share (after tax). PDP reserve value is $38.94 per diluted share 
      (before tax) and $32.89 per diluted share (after tax). The decrease in 
      the 2P reserve value in the current reserve report (compared to the 
      December 31, 2024 reserve report) is a result of a significant increase 
      in reserve volumes being more than offset by significant backwardation in 
      the JKM gas price as well as weaker AECO prices in the engineering price 
      deck after 2027. 

MARKETING UPDATE

   -- Tourmaline's average realized natural gas price in Q4 2025 was CAD 
      $3.77/mcf, significantly (CAD $1.51/mcf) above the AECO 5A benchmark 
      price of CAD $2.26/mcf over the same period, as the Company continues to 
      benefit from its diversified marketing portfolio and strategic hedging 
      program. 
 
   -- Tourmaline has an average of 879 mmcfpd of natural gas hedged for 2026 at 
      a weighted average fixed price of CAD $4.54/mcf. This includes 55 mmcfpd 
      hedged at a weighted average price of CAD $14.69/mcf in international 
      markets and 130 mmcfpd at a weighted average price of CAD $6.70/mcf in 
      Western U.S. markets. 
 
   -- In Q1 2026, Tourmaline has over 370 mmcfpd of physical gas exposed to the 
      premium price Eastern markets (Dawn, Ventura, Chicago, Iroquois, Emerson 
      and ANR SE), providing a strong uplift to Q1 cash flow. These markets 
      traded at an average of CAD $24.00/mcf for the last ten days of January. 
 
   -- The Company entered into a long-term natural gas storage agreement with 
      AltaGas at its Dimsdale Storage Facility in Alberta in 2025, and AltaGas 
      has announced a positive final investment decision ("FID") for the Phase 
      2 expansion of the facility. Tourmaline will have access to 6 bcf of 
      storage capacity starting April 2026, increasing to 10 bcf in mid-2027 
      for a 10-year term. The Company views the acquisition of an additional 
      large storage position as a strategic opportunity to improve financial 
      performance and enhance operational flexibility in periods of natural gas 
      volatility. This is another aspect of the Company's ongoing efforts to 
      fully vertically integrate the overall gas business. 
 
   -- Tourmaline will have an average of 213,000 mmbtu/d exposed to 
      international pricing (TTF/JKM) in 2026. This will grow to 253,000 
      mmbtu/d by exit 2027 and 333,000 mmbtu/d by exit 2028. Both JKM and TTF 
      prices have improved since year end 2025. 

COST REDUCTION/MARGIN IMPROVEMENT UPDATE

   -- Tourmaline embarked upon a comprehensive cost reduction initiative in 
      mid-2025 with the focus on reducing all aspects of the cost equation. 
      These realized cost reductions are expected to be sustainable on a 
      long-term basis. 
 
   -- Q4 2025 operating costs were $4.66/boe, down 3% from third quarter 2025 
      operating costs of $4.80/boe and down 9% from first half of 2025 
      operating costs of $5.14/boe. 
 
   -- The sale of the PRH complex will reduce go-forward corporate operating 
      costs by a further 7%, resulting in a 2026 operating cost guidance of 
      $4.50/boe, a 9% year-over-year reduction. 
 
   -- With the success of cost reduction initiatives to date, Tourmaline is 
      revising its aggregate operating and transport cost reduction target by 
      2031 from $1.00/boe to $1.50/boe, with approximately $0.70/boe already 
      achieved since the first half of 2025 when the target was initiated. 
 
   -- Lower aggregate debt levels combined with the Company's recently 
      initiated commercial paper program are expected to yield approximately 
      $20-25 million in interest cost reductions in 2026 based on prevailing 
      interest rates. 
 
   -- Tourmaline has entered into agreements to control frac sand capacity in a 
      transload facility in the NEBC Montney complex. The facility is expected 
      to commence operations in Q2 2026. This vertical integration of the 
      Company's sand business is estimated to save over $40M per year in 
      capital costs. 
 
   -- The NEBC infrastructure buildout will systematically reduce costs as 
      various components of the buildout are completed. The first major 
      component to be completed is the liquids hub and associated pipelines 
      located in proximity to the Aitken gas processing complex. The project 
      was commissioned in February 2026 with an initial capacity of 20,000 
      bbl/d and will handle all condensate from North Montney Phase 1 and 
      future North Montney development phases with resulting expected overall 
      corporate savings of $0.05/boe over the EP Plan period. 
 
   -- By 2031, through expected total cost reductions of $1.50/boe, and 
      sand-related capital savings of over $40 million per year, Tourmaline 
      anticipates up to $500 million per year of aggregate structural cost 
      reductions, compared to the Company's first half of 2025 total cost 
      structure, which will flow through to lower corporate break evens and FCF 
      margin improvement. 

EP UPDATE

   -- Tourmaline drilled 331 gross wells in 2025 and led the Canadian 
      industry(9) with a total of 1.7 million metres drilled during the year. 
 
   -- In 2025, Tourmaline delivered its best overall well performance in the 
      past five years in the NEBC Montney gas condensate complex (21% higher 
      than the previous 5-year average based on the IP90 of 102 wells). This 
      outperformance has been across the full suite of the BC Montney assets, 
      from Aitken-Birch-Gundy in the north to Groundbirch-Doe-Monias in the 
      south. 
 
   -- The Company is currently planning to drill and complete a total of 
      approximately 280 net wells in 2026 including approximately 140 net wells 
      in both the Alberta Deep Basin and the NEBC gas condensate complexes. 
      Tourmaline continues to increase its lateral length with the 2025 Deep 
      Basin and NEBC program averaging 8,400 completed lateral feet, up over 
      1,100 feet from 2024. Drilling and completion costs per foot in the Deep 
      Basin and NEBC are now in decline, dropping from $805 per lateral foot in 
      2024 to $780 per lateral foot in 2025 despite steadily higher tonnage in 
      NEBC completions. 
 
   -- The 2026 EP capital budget reduction will not impact the original 
      start-up timing of the Aitken and Groundbirch/Monias gas plant projects 
      in NEBC. Aitken is on schedule for a Q4 2026 completion, with 
      Groundbirch/Monias completion expected in Q4 2027. 
 
   -- The Company's ongoing new zone/new pool exploration program has resulted 
      in 2.55 TCFe of 2P reserves (as at December 31, 2025) and 1,356 
      Tier1/Tier 2 drilling locations, with the vast majority of these 
      additions occurring in the last five years. There are several potential 
      high impact exploration and delineation wells planned in the 2026 
      program. 

ENVIRONMENTAL PERFORMANCE IMPROVEMENT

   -- Tourmaline has achieved Grade 'A' certification for methane performance 
      across its NEBC assets under MiQ's global methane certification standard. 
      Tourmaline is the first Canadian company to be certified under MiQ and 
      the first company in MiQ's history to have certified integrated gas 
      production and processing facilities. 
 
   -- Tourmaline's cleantech engineering team continues to develop and 
      implement new proprietary emission reduction technologies, execute 
      expanded water management initiatives, explore industry leading methane 
      mitigation technologies, and manage related third-party environmental 
      research. 
 
   -- Since embarking on the diesel displacement initiative for drilling rigs 
      and frac spreads in June 2017, the Company has displaced 240 million 
      litres of diesel, providing an emissions reduction of 160,000 tonnes of 
      carbon dioxide and saving approximately $235 million (including the cost 
      of the replacement natural gas). Drilling and completions operations 
      powered by natural gas result in lower emissions of carbon dioxide, 
      nitrogen oxides, sulphur dioxide and particulate matter compared to 
      traditional diesel-powered drilling and completions operations. 
 
   -- The compressed natural gas in long-haul trucking joint development with 
      Clean Energy Fuels Corp., announced in April 2023, continues to progress 
      with 5 stations operational across Alberta and British Columbia. An 
      additional four new stations are planned in 2026. This initiative is 
      expected to reduce costs and emissions in the long-haul trucking industry 
      and build Canadian natural gas demand. 
 
   -- Tourmaline completed construction of a new water recycling facility in 
      2025 and is planning to build three additional storage and recycling 
      facilities in 2026. These facilities reduce freshwater usage and reduce 
      well stimulation costs. 
 
   -- The Company is a leader in methane emission mitigation and operates the 
      West Wolf Emissions Testing Centre, the largest in the world, where new 
      technologies to accurately measure and ultimately reduce methane 
      emissions are developed. 

DIVIDEND

   -- Tourmaline's Board of Directors has declared a quarterly base dividend of 
      $0.50 per share, payable on March 31, 2026 to shareholders of record at 
      the close of business on March 16, 2026. The quarterly base dividend is 
      designated as an eligible dividend for Canadian income tax purposes. 
 
   -- Weak WCSB local gas pricing and unusually low pricing at the PG&E and 
      Malin sales hubs this winter will limit FCF and constrain the Company's 
      ability to fund a special dividend in Q1. Sustained stronger pricing and 
      the Company's ongoing margin improvement activities are expected to lead 
      to further base dividend increases in the future. Special dividends are 
      anticipated to be used in those periods of particularly strong pricing to 
      return the majority of the incremental FCF to shareholders. 
 
_______________________________________________________ 
(1)  This news release contains certain specified financial 
      measures consisting of non-GAAP financial measures, 
      non-GAAP financial ratios, capital management measures 
      and supplementary financial measures. See "Non-GAAP 
      and Other Financial Measures" in this news release 
      for information regarding the following specified 
      financial measures: "cash flow", "capital expenditures", 
      "EP expenditures", "free cash flow", "operating netback", 
      "operating netback per boe", "cash flow per diluted 
      share", "free cash flow per diluted share", "adjusted 
      working capital", "net debt", "reserve value per diluted 
      share", "operating expenses per boe", "cash general 
      and administrative expenses per boe" and "transportation 
      costs per boe". Since these specified financial measures 
      do not have standardized meanings under International 
      Financial Reporting Standards ("GAAP"), securities 
      regulations require that, among other things, they 
      be identified, defined, qualified and, where required, 
      reconciled with their nearest GAAP measure and compared 
      to the prior period. See "Non-GAAP and Other Financial 
      Measures" in this news release and in the Company's 
      Management's Discussion and Analysis as at and for 
      the year ended December 31, 2025 (the "Annual MD&A"), 
      which information is incorporated by reference into 
      this news release, for further information on the 
      composition of and, where required, reconciliation 
      of these measures. 
(2)  "Free cash flow" is a non-GAAP financial measure defined 
      as cash flow less capital expenditures, excluding 
      acquisitions and dispositions. Free cash flow is prior 
      to dividend payments. See "Non-GAAP and Other Financial 
      Measures" in this news release. 
(3)  "Net debt" is a capital management measure. See "Non-GAAP 
      and Other Financial Measures" in this news release 
      and in the Annual MD&A. 
(4)  "Cash flow" is a non-GAAP financial measure defined 
      as cash flow from operating activities adjusted for 
      the change in non-cash working capital (deficit) and 
      current taxes. See "Non-GAAP and Other Financial Measures" 
      in this news release and in the Annual MD&A. 
(5)  "Operating netback" is a non-GAAP financial measure. 
      See "Non-GAAP and Other Financial Measures" in this 
      news release and in the Annual MD&A. 
(6)  "Cash flow per diluted share" is a non-GAAP financial 
      ratio. Cash flow, a non-GAAP financial measure, is 
      used as a component of the non-GAAP financial ratio. 
      See "Non-GAAP and Other Financial Measures" in this 
      news release and in the Annual MD&A. 
(7)  Strip Pricing as of March 2, 2026. 
(8)  Reserves are "Company gross reserves", which are defined 
      as the working interest share of reserves prior to 
      the deduction of interest owned by others (burdens). 
      Royalty interest reserves are not included in Company 
      gross reserves. 
(9)  As reported by Daily Oil Bulletin Energy on February 
      25, 2026. 
 

CORPORATE SUMMARY -- DECEMBER 31, 2025

 
                           Three Months EndedDecember 31,  Twelve Months EndedDecember 31, 
                           2025       2024       Change    2025         2024         Change 
OPERATIONS 
Production 
Natural gas (mcf/d)        3,039,185  2,779,365       9 %    2,946,447    2,643,532    11 % 
Crude oil, condensate and 
 NGL (bbl/d)                 152,673    138,852      10 %      147,121      138,584     6 % 
Oil equivalent (boe/d)       659,204    605,413       9 %      638,196      579,173    10 % 
Product prices(1) 
Natural gas ($/mcf)           $ 3.77     $ 3.48       8 %       $ 3.62       $ 3.38     7 % 
Crude oil, condensate and 
 NGL ($/bbl)                 $ 47.08    $ 56.99    (17) %      $ 50.27      $ 54.78   (8) % 
Operating expenses 
 ($/boe)                      $ 4.66     $ 4.52       3 %       $ 4.93       $ 4.75     4 % 
Transportation costs 
 ($/boe)                      $ 5.06     $ 4.97       2 %       $ 5.14       $ 5.11     1 % 
Operating netback 
 ($/boe)(2)                  $ 16.32    $ 17.40     (6) %      $ 16.02      $ 16.26   (1) % 
Cash general and 
 administrative expenses 
 ($/boe)(3)                   $ 0.69     $ 0.82    (16) %       $ 0.78       $ 0.77     1 % 
FINANCIAL 
($000, except share and 
per share) 
Commodity sales from 
production 
Total revenue from 
 commodity sales and 
 realized gains            1,714,660  1,623,819       6 %    6,591,299    6,044,773     9 % 
Royalties                    135,121    125,699       7 %      513,879      509,252     1 % 
Cash flow                    890,117    850,330       5 %    3,395,570    3,218,491     6 % 
Cash flow per share 
 (diluted)                    $ 2.29     $ 2.27       1 %       $ 8.84       $ 8.93   (1) % 
Net earnings               (655,002)    407,445   (261) %      262,672    1,264,109  (79) % 
Net earnings per share 
 (diluted)                  $ (1.69)     $ 1.09   (255) %       $ 0.68       $ 3.51  (81) % 
Capital expenditures (net 
 of dispositions)(2)         827,986    460,193      80 %    2,932,280    1,901,461    54 % 
Weighted average shares 
 outstanding (diluted)                                     383,938,857  360,249,193     7 % 
Net debt                                                   (1,523,871)  (1,702,732)  (11) % 
PROVED + 
 PROBABLE RESERVES(4) 
Natural gas (bcf)                                             27,671.4     24,837.0    11 % 
Crude oil (mbbls)                                              124,518      119,331     4 % 
Natural gas liquids 
 (mbbls)                                                     1,355,332    1,236,385    10 % 
Mboe                                                         6,091,751    5,495,212    11 % 
 
 
Notes: 
(1)  Product prices include realized gains and losses on 
      risk management activities and financial instrument 
      contracts. 
(2)  See "Non-GAAP and Other Financial Measures" in this 
      news release and in the Annual MD&A. 
(3)  Excluding interest and financing charges. 
(4)  Reserves are "Company gross reserves", which are defined 
      as the working interest share of reserves prior to 
      the deduction of interest owned by others (burdens). 
      Royalty interest reserves are not included in Company 
      gross reserves. 
 

2025 RESERVE SUMMARY

The following tables summarize the Company's gross reserves defined as the working interest share of reserves prior to the deduction of interest owned by others (burdens). Royalty interest reserves are not included in Company gross reserves. Company net reserves are defined as the working net carried and royalty interest reserves after deduction of all applicable burdens.

Reserves and Future Net Revenue Data (Forecast Prices and Costs)

Summary of Crude Oil, Natural Gas and Natural Gas Liquids Reserves and

Net Present Values of Future Net Revenue

as of December 31, 2025

Forecast Prices and Costs(1)

 
                Light & Medium    Conventional Natural    Shale Natural Gas(2)    Natural Gas Liquids   Total Oil Equivalent 
                Crude Oil         Gas 
Reserves        Company  Company  Company    Company Net  Company     Company     Company    Company    CompanyGross(Mboe)  CompanyNet(Mboe) 
Category        Gross    Net      Gross       (MMcf)      Gross       Net         Gross      Net 
                (Mbbls)  (Mbbls)  (MMcf)                  (MMcf)      (MMcf)      (Mbbls)    (Mbbls) 
Proved 
 Developed 
 Producing       21,160   17,174  3,055,049    2,735,539   3,718,591   3,177,927    320,480    259,711           1,470,580         1,262,462 
Proved 
 Developed 
 Non-Producing      913      719     77,273       69,212     235,875     207,971     14,957     12,073              68,061            58,989 
Proved 
 Undeveloped     46,004   35,868  2,707,566    2,420,305   5,028,848   4,397,996    381,895    306,033           1,717,302         1,478,285 
Total Proved     68,077   53,760  5,839,887    5,225,056   8,983,313   7,783,894    717,332    577,817           3,255,943         2,799,735 
Total Probable   56,441   44,105  3,887,703    3,405,262   8,960,502   7,602,413    638,000    483,364           2,835,808         2,362,082 
Total Proved 
 Plus Probable  124,518   97,865  9,727,590    8,630,317  17,943,815  15,386,307  1,355,332  1,061,181           6,091,751         5,161,817 
 
 
Reserves        Net Present Values of Future Net Revenue ($000s) 
Category 
                Before Income Taxes Discounted at                                       After Income Taxes Discounted at(3)                                     Unit Value Before 
                 (%/year)                                                                (%/year)                                                                Income Tax 
                                                                                                                                                                 Discounted 
                                                                                                                                                                 at 10%/year 
                         0           5           8          10          15          20           0           5           8          10          15          20   ($/Boe)   ($/Mcfe) 
Proved 
 Developed 
 Producing      22,301,966  17,992,059  16,036,155  14,951,707  12,814,736  11,253,708  18,441,419  15,077,840  13,505,660  12,627,256  10,885,272   9,604,416     11.84       1.97 
Proved 
 Developed 
 Non-Producing   1,676,830   1,274,026   1,096,787     998,260     803,042     660,138   1,243,603     944,800     812,099     738,132     591,280     483,594     16.92       2.82 
Proved 
 Undeveloped    22,289,928  13,562,876  10,305,918   8,646,213   5,674,702   3,770,473  16,576,660   9,821,393   7,287,783   5,997,234   3,693,228   2,227,362      5.85       0.97 
Total Proved    46,268,724  32,828,961  27,438,860  24,596,180  19,292,480  15,684,319  36,261,681  25,844,033  21,605,541  19,362,623  15,169,781  12,315,371      8.79       1.46 
Total Probable  47,073,880  23,307,656  16,451,121  13,361,389   8,489,541   5,799,002  34,976,107  17,159,157  12,006,018   9,687,734   6,046,297   4,051,063      5.66       0.94 
Total Proved 
 Plus Probable  93,342,604  56,136,618  43,889,981  37,957,569  27,782,020  21,483,321  71,237,789  43,003,190  33,611,559  29,050,357  21,216,078  16,366,435      7.35       1.23 
 
 
Notes: 
(1)  Numbers may not add due to rounding. 
(2)  Shale Natural Gas is required to be presented separately 
      from Conventional Natural Gas as its own product type 
      pursuant to National Instrument 51-101 -- Standards 
      of Disclosure for Oil and Gas Activities ("NI 51-101"). 
      While the Tourmaline Montney reserves do not strictly 
      fit the definition of "shale gas" as defined in NI 
      51-101 because the natural gas is not "primarily adsorbed" 
      as stated within the definition, the Montney reserves 
      have been included as shale gas for purposes of this 
      disclosure. 
(3)  The after-tax net present value of the Company's oil 
      and gas reserves reflects Company-level tax pools. 
      The Company's financial statements and management's 
      discussion and analysis should be consulted for information 
      at the Company level. 
 

Total Future Net Revenue ($000s)

(Undiscounted)

as of December 31, 2025

Forecast Prices and Costs(1)

 
Reserves        Revenue      Royalties   Operating   Capital      Abandonment  Future Net  Income      Future Net 
Category                                  Costs      Development  and           Revenue     Tax         Revenue 
                                                                  Reclamation   Before                  After 
                                                     Costs                      Income                  Income 
                                                                  Costs(2)      Tax                     Tax(3) 
Proved 
 Developed 
 Producing       44,048,706   6,307,932  12,849,844       81,045    2,507,918  22,301,966   3,860,547  18,441,419 
Proved 
 Developed 
 Non-Producing    2,767,252     371,004     548,968      113,251       57,200   1,676,830     433,228   1,243,603 
Proved 
 Undeveloped     55,161,594   8,535,555  11,285,023   12,392,477      658,610  22,289,928   5,713,268  16,576,660 
Total Proved    101,977,552  15,214,491  24,683,836   12,586,772    3,223,728  46,268,724  10,007,043  36,261,681 
Total Probable   98,478,991  18,257,702  22,549,878    9,655,820      941,711  47,073,880  12,097,772  34,976,107 
Total Proved 
 Plus Probable  200,456,543  33,472,193  47,233,714   22,242,592    4,165,439  93,342,604  22,104,815  71,237,789 
 
 
Notes: 
(1)  Numbers may not add due to rounding. 
(2)  Abandonment and Reclamation Costs includes all active 
      and inactive assets, with or without associated reserves, 
      inclusive of all wells (existing and undrilled), facilities 
      and pipelines. 
(3)  The after-tax net present value of the Company's oil 
      and gas reserves reflects Company-level tax pools. 
      The Company's financial statements and management's 
      discussion and analysis should be consulted for information 
      at the Company level. 
 

Summary of Pricing and Inflation Rate Assumptions

Forecast Prices and Costs (1)

 
Year    Inflation%   Crude Oil and Natural Gas Liquids Pricing 
                    CAD/USD   NYMEXWTI Near         MSW,      Alberta Natural Gas Liquids 
                    Exchange  Month Futures         Light      (Then Current Dollars) 
                    Rate      Contract              Crude 
                    $US/$Cdn  Crude Oil atCushing,  Oil 
                              Oklahoma              (40 API, 
                                                    0.3%S) 
                                                    at 
                                                    Edmonton 
                                                    Then 
                                                    Current 
                                                    $Cdn/Bbl 
                              Constant  Then                  Spec       Edmonton   Edmonton   Edmonton 
                               2026      Current               Ethane     Propane    Butane     C5+ 
                               $US/Bbl   $US/                  $Cdn/Bbl   $Cdn/Bbl   $Cdn/Bbl   Stream 
                                         Bbl                                                    Quality 
                                                                                                $Cdn/Bbl 
2026           0.0     0.728     59.92       59.92     77.54       9.59      25.10      36.95      80.01 
2027           2.0     0.737     63.82       65.10     83.60      10.64      27.28      39.79      86.19 
2028           2.0     0.740     67.55       70.28     90.18      11.34      29.67      42.87      92.83 
2029           2.0     0.740     67.78       71.93     92.32      11.66      30.37      43.89      95.05 
2030           2.0     0.740     67.79       73.37     94.17      11.89      30.98      44.77      96.94 
2031           2.0     0.740     67.79       74.84     96.06      12.14      31.60      45.67      98.89 
2032           2.0     0.740     67.79       76.34     97.98      12.39      32.23      46.58     100.87 
2033           2.0     0.740     67.79       77.87     99.93      12.64      32.87      47.51     102.88 
2034           2.0     0.740     67.79       79.42    101.93      12.90      33.53      48.46     104.94 
2035           2.0     0.740     67.79       81.01    103.97      13.17      34.20      49.43     107.04 
2036           2.0     0.740     67.79       82.63    106.05      13.43      34.89      50.42     109.18 
2037           2.0     0.740     67.79       84.29    108.17      13.70      35.58      51.43     111.36 
2038           2.0     0.740     67.79       85.97    110.34      13.97      36.30      52.46     113.59 
2039           2.0     0.740     67.79       87.69    112.54      14.25      37.02      53.51     115.86 
2040           2.0     0.740     67.79       89.45    114.79      14.54      37.76      54.58     118.18 
2041+          2.0     0.740     67.79    +2.0%/yr  +2.0%/yr   +2.0%/yr   +2.0%/yr   +2.0%/yr   +2.0%/yr 
 
 
Year    Natural Gas and Sulphur Pricing 
        NYMEX Henry Hub         Midwest   AECO/NIT                           Alberta Plant Gate             Huntingdon/  British Columbia             Dutch     JKM 
         Near Month Contract     Price @  SpotThen                                                           Sumas                                    TTF        $US/ 
                                 Chicago                                                                     Spot                                     $US/       MMbtu 
                                 Then     Current                                                            $US/                                     Mmbtu 
                                 Current  $Cdn/                                                              MMbtu 
                                 $US/     MMbtu 
                                 MMbtu 
                                                                             Spot                ARP $Cdn/               Westcoast   Spot Plant Gate 
                                                                                                  MMbtu                   Station 2   $Cdn/ 
                                                                                                                          $Cdn/       MMbtu 
                                                                                                                          MMbtu 
        Constant  Then Current                      Dawn Price@ OntarioThen  Constant  Then 
         2026      $US/MMbtu                         Current                  2026      Current 
         $US/                                        $US/MMbtu                $Cdn/     $Cdn/ 
         MMbtu                                                                MMbtu     MMbtu 
2026        3.74          3.74      3.47      3.00                     3.51      2.78      2.78       2.78         2.41        2.66             2.25     10.19      9.20 
2027        3.70          3.78      3.55      3.30                     3.54      3.02      3.08       3.08         3.56        3.07             2.65      9.94      9.70 
2028        3.70          3.85      3.63      3.49                     3.61      3.13      3.26       3.26         3.64        3.25             2.83     10.19     10.40 
2029        3.71          3.93      3.70      3.58                     3.69      3.16      3.35       3.35         3.72        3.34             2.92     10.50     11.08 
2030        3.70          4.01      3.78      3.65                     3.77      3.16      3.42       3.42         3.80        3.41             2.98     10.71     11.30 
2031        3.70          4.09      3.85      3.72                     3.85      3.16      3.49       3.49         3.89        3.47             3.04     10.92     11.53 
2032        3.70          4.17      3.94      3.80                     3.93      3.17      3.57       3.57         3.97        3.54             3.11     11.14     11.76 
2033        3.70          4.26      4.01      3.88                     4.02      3.17      3.64       3.64         4.06        3.62             3.18     11.36     11.99 
2034        3.70          4.34      4.10      3.95                     4.10      3.17      3.72       3.72         4.14        3.69             3.25     11.59     12.23 
2035        3.70          4.43      4.17      4.03                     4.18      3.17      3.79       3.79         4.23        3.77             3.32     11.82     12.49 
2036        3.70          4.52      4.26      4.11                     4.27      3.17      3.87       3.87         4.32        3.84             3.39     12.06     12.74 
2037        3.70          4.61      4.34      4.20                     4.35      3.17      3.95       3.95         4.40        3.92             3.46     12.30     12.99 
2038        3.70          4.70      4.43      4.28                     4.44      3.17      4.02       4.02         4.49        4.00             3.52     12.55     13.25 
2039        3.70          4.79      4.52      4.36                     4.53      3.17      4.11       4.11         4.58        4.08             3.60     12.80     13.52 
2040        3.70          4.89      4.61      4.45                     4.62      3.17      4.19       4.19         4.67        4.16             3.67     13.05     13.79 
2041+       3.70      +2.0%/yr  +2.0%/yr  +2.0%/yr                 +2.0%/yr      3.17  +2.0%/yr   +2.0%/yr     +2.0%/yr    +2.0%/yr         +2.0%/yr  +2.0%/yr  +2.0%/yr 
 
 
 
 
Notes: 
(1)  Crude oil and natural gas benchmark reference pricing, 
      inflation and exchange rates utilized by GLJ in the 
      GLJ Reserve Report and Deloitte LLP in the Deloitte 
      Reserve Report, were an equal weighted average of 
      the December 31, 2025 price forecasts published by 
      GLJ and McDaniel & Associates Consultants Ltd. as 
      at January 1, 2026 and Sproule Associates Ltd. as 
      at December 31, 2025 (each of which is available on 
      their respective websites at www.gljpc.com, www.mcdan.com 
      and www.sproule.com). GLJ assigns a value to the Company's 
      existing physical diversification contracts for natural 
      gas at consuming market regions including U.S. Gulf 
      Coast, U.S. Midwest, U.S. West and Canadian East, 
      and international markets based on forecasted differentials 
      to NYMEX Henry Hub as per the aforementioned consultant 
      average price forecast, contracted volumes and transportation 
      costs. No incremental value is assigned to potential 
      future contracts which were not in place as of December 
      31, 2025. 
 

RESERVES PERFORMANCE RATIOS

The following tables highlight Tourmaline's reserves, F&D and FD&A costs as well as the associated recycle ratios.

Reserves, Capital Expenditures and Cash Flow(1)

 
As at, and for the Year ended December 31,    2025       2024       2023 
Reserves (Mboe) 
Proved Producing                              1,470,580  1,345,354  1,204,499 
Total Proved                                  3,255,943  2,912,173  2,614,619 
Proved Plus Probable                          6,091,751  5,495,212  5,008,374 
Capital Expenditures ($ millions) 
Exploration and Development(2)                    2,989      2,226      2,023 
Net Property Acquisitions (Dispositions)(3)         229      (325)         51 
Corporate Acquisitions(3)                           502      1,709      1,442 
Total(4)                                          3,720      3,610      3,516 
Cash Flow ($/boe) 
Cash Flow                                         14.58      15.18      19.52 
Cash Flow - Three Year Average                    16.26      20.20      21.58 
 
 
Notes: 
(1)  Cash flow is defined as cash provided by operations 
      adjusted for the change in non-cash operating working 
      capital (deficit) and current income taxes. See "Non-GAAP 
      and Other Financial Measures" below and in the Annual 
      MD&A for further discussion. 
(2)  Includes capitalized G&A of $51 million, $45 million 
      and $43 million for 2025, 2024 and 2023, respectively. 
(3)  Includes purchase price (cash and/or common shares) 
      plus net debt, if applicable. 
(4)  Represents the capital expenditures used for purposes 
      of F&D and FD&A calculations. 
 

Finding and Development Costs

 
Finding and Development Costs, Excluding  2025     2024     2023   3-Year Avg. 
FDC 
Total Proved 
Reserve Additions (MMboe)                   387.8    232.8  209.3 
F&D Costs ($/boe)                            7.71     9.56   9.66         8.72 
F&D Recycle Ratio(1)                          1.9      1.6    2.0          1.9 
Total Proved Plus Probable 
Reserve Additions (MMboe)                   457.5    167.1  230.7 
F&D Costs ($/boe)                            6.53    13.32   8.77         8.46 
F&D Recycle Ratio(1)                          2.2      1.1    2.2          1.9 
 
Finding and Development Costs, Including     2025     2024   2023  3-Year Avg. 
FDC 
Total Proved 
Change in FDC ($ millions)                1,669.4  (161.5)  231.8 
Reserve Additions (MMboe)                   387.8    232.8  209.3 
F&D Costs ($/boe)                           12.01     8.87  10.77        10.82 
F&D Recycle Ratio(1)                          1.2      1.7    1.8          1.5 
Total Proved Plus Probable 
Change in FDC ($ millions)                2,316.9  (422.0)  912.9 
Reserve Additions (MMboe)                   457.5    167.1  230.7 
F&D Costs ($/boe)                           11.60    10.79  12.72        11.74 
F&D Recycle Ratio(1)                          1.3      1.4    1.5          1.4 
 

Finding, Development and Acquisition Costs

 
Finding, Development and Acquisition    2025     2024     2023     3-Year Avg. 
Costs, Excluding 
FDC 
Total Proved 
Reserve Additions (MMboe)                 576.7    509.5    482.6 
FD&A Costs ($/boe)                         6.45     7.09     7.28         6.91 
FD&A Recycle Ratio(1)                       2.3      2.1      2.7          2.4 
Total Proved Plus Probable 
Reserve Additions (MMboe)                 829.5    698.8    698.0 
FD&A Costs ($/boe)                         4.48     5.17     5.04         4.87 
FD&A Recycle Ratio(1)                       3.3      2.9      3.9          3.3 
 
Finding, Development and Acquisition       2025     2024     2023  3-Year Avg. 
Costs, Including 
FDC 
Total Proved 
Change in FDC ($ millions)              2,597.7  1,201.6  1,654.1 
Reserve Additions (MMboe)                 576.7    509.5    482.6 
FD&A Costs ($/boe)                        10.95     9.44    10.71        10.39 
FD&A Recycle Ratio(1)                       1.3      1.6      1.8          1.6 
Total Proved Plus Probable 
Change in FDC ($ millions)              3,820.9  1,473.8  3,326.1 
Reserve Additions (MMboe)                 829.5    698.8    698.0 
FD&A Costs ($/boe)                         9.09     7.28     9.80         8.74 
FD&A Recycle Ratio(1)                       1.6      2.1      2.0          1.9 
 
 
Note: 
(1)  The recycle ratio is calculated by dividing the cash 
      flow per boe by the appropriate F&D or FD&A costs 
      related to the reserve additions for that year. 
 

Conference Call Tomorrow at 9:00 a.m. MT (11:00 a.m. ET)

Tourmaline will host a conference call tomorrow, March 5, 2026 starting at 9:00 a.m. MT (11:00 a.m. ET).

To participate without operator assistance, you may register and enter your phone number at https://emportal.ink/4c60ro6 to receive an instant automated call back.

To participate using an operator, please dial 1-888-510-2154 (toll-free in North America), or 1-437-900-0527 (international dial-in), a few minutes prior to the conference call.

REPLAY DETAILS

If you are unable to dial into the live conference call on March 5, 2026, a replay will be available by dialing 1-888-660-6345 (international 1-289-819-1450), referencing Replay Code 13689. The recording will expire on March 19, 2026.

Reader Advisories

CURRENCY

All amounts in this news release are stated in Canadian dollars unless otherwise specified.

FORWARD-LOOKING INFORMATION

This news release contains forward-looking information and statements (collectively, "forward-looking information") within the meaning of applicable securities laws. The use of any of the words "forecast", "expect", "anticipate", "continue", "estimate", "objective", "ongoing", "on track", "may", "will", "project", "should", "believe", "plans", "intends" and similar expressions are intended to identify forward-looking information. More particularly and without limitation, this news release contains forward-looking information concerning Tourmaline's plans and other aspects of its anticipated future operations, management focus, objectives, strategies, financial, operating and production results and business opportunities, including the following: anticipated petroleum and natural gas production and production growth for various periods including estimated average production levels for Q1 2026 and full-year 2026; the reduction in estimated average ethane production levels and estimated increased 2026 and 2027 operating netbacks following the termination of the Company's use of discretionary deep cut gas processing; the use of proceeds from the sale of the Company's PRH Complex and the reduction in operating costs resulting from such sale; the Company's long-term net debt target; the anticipated 2026 full year EP capital program and the reduction thereto, including the impact on production guidance resulting from such reduction; anticipated commodity price improvement; the 2026 EP capital program; 2026 CF and FCF; the expected CF and FCF increases resulting from a U.S. $0.10/mcf tightening of the AECO basis; the expected CF and FCF increases resulting from a U.S. $1.00/mcf increase in both TTF and JKM pricing; production levels, CF, FCF and other information included in the Company's EP Plan; average production volumes exposed to international pricing in 2026 (JKM/TTF); expected interest cost reductions resulting from lower debt levels and the Company's commercial paper program; anticipated capital cost reductions resulting from the vertical integration of the Company's sand business; the anticipated growth, margin expansion and improvement in all operating metrics associated with the NEBC Montney infrastructure and development project; expected total cost reductions that the Company expects to realize by 2031 as a result of operating cost reductions and sand-related capital savings, and the flow through to lower corporate break evens and FCF margin improvement; the number of wells that the Company plans to drill and complete in 2026; the expectation that the EP capital budget reduction will not impact the original start up timing of the Aitken and Groundbirch/Monias gas plant projects in NEBC; the future declaration and payment of base and special dividends and the timing, cadence and

amount thereof; the expansion of Tourmaline's market diversification portfolio; the timing and scale of future growth and developments projects, including the NEBC infrastructure build out; projected operating and drilling costs and drilling times; anticipated future commodity prices; the number of new compressed natural gas fueling stations that are planned for 2026; the expectation that sustained stronger pricing and the Company's ongoing margin improvement activities will lead to further base dividend increases in the future and that special dividends will be used in those periods of extremely strong pricing to return the majority of the incremental FCF to shareholders; as well as Tourmaline's future drilling locations, prospects and plans, business strategy, future development and growth opportunities, prospects and asset base. The forward-looking information is based on certain key expectations and assumptions made by Tourmaline, including expectations and assumptions concerning the following: prevailing and future commodity prices and currency exchange and interest rates; applicable royalty rates and tax laws; future well production rates and reserve volumes; operating costs, the timing of receipt of regulatory approvals; the performance of existing and future wells; the success obtained in drilling new wells; anticipated timing and results of capital expenditures; the sufficiency of budgeted capital expenditures in carrying out planned activities; the timing, location and extent of future drilling operations; the successful completion of acquisitions and dispositions and the benefits to be derived therefrom; the state of the economy and the exploration and production business; the availability and cost of financing, labour and services; ability to maintain its investment grade credit rating; and ability to market crude oil, natural gas and NGL successfully. Without limitation of the foregoing, future dividend payments, if any, and the level thereof is uncertain, as the Company's dividend policy and the funds available for the payment of dividends from time to time is dependent upon, among other things, FCF, financial requirements for the Company's operations and the execution of its growth strategy, fluctuations in working capital and the timing and amount of capital expenditures, debt service requirements and other factors beyond the Company's control. Further, the ability of Tourmaline to pay dividends is subject to applicable laws (including the satisfaction of the solvency test contained in applicable corporate legislation) and contractual restrictions contained in the instruments governing its indebtedness, including its credit facility.

Statements relating to "reserves" are also deemed to be forward looking information, as they involve the implied assessment, based on certain estimates and assumptions, that the reserves described exist in the quantities predicted or estimated and that the reserves can be profitably produced in the future.

Although Tourmaline believes that the expectations and assumptions on which such forward-looking information is based are reasonable, undue reliance should not be placed on the forward-looking information because Tourmaline can give no assurances that it will prove to be correct. Since forward-looking information addresses future events and conditions, by its very nature it involves inherent risks and uncertainties. Actual results could differ materially from those currently anticipated due to a number of factors and risks. These include, but are not limited to: the risks associated with the oil and gas industry in general such as operational risks in development, exploration and production; delays or changes in plans with respect to exploration or development projects or capital expenditures; supply chain disruptions; the uncertainty of estimates and projections relating to reserves, production, revenues, costs and expenses; health, safety and environmental risks; commodity price and exchange rate fluctuations; interest rate fluctuations; changes in rates of inflation; marketing and transportation; loss of markets; environmental risks; competition; incorrect assessment of the value of acquisitions; failure to complete or realize the anticipated benefits of acquisitions or dispositions; hazards such as fire, explosion, blowouts, cratering, and spills, any of which could result in substantial damage to wells, production facilities, other property and the environment or in personal injury; stock market volatility; ability to access sufficient capital from internal and external sources; uncertainties associated with counterparty credit risk; failure to obtain required regulatory and other approvals including drilling permits and the impact of not receiving such approvals on the Company's long-term planning; climate change risks; severe weather (including wildfires, floods and drought); risks of wars or other hostilities or geopolitical events, civil insurrection and pandemics; risks relating to Indigenous land claims and duty to consult; data breaches and cyber attacks; risks relating to the use of artificial intelligence; changes in legislation, including but not limited to tax laws, royalties and environmental regulations (including greenhouse gas emission reduction requirements and other decarbonization or social policies and including uncertainty with respect to the interpretation and impact of omnibus Bill C-59 and the related amendments to the Competition Act (Canada)); trade policy, barriers, disputes or wars (including new tariffs or changes to existing international trade arrangements); and general economic and business conditions and markets. Readers are cautioned that the foregoing list of factors is not exhaustive.

Additional information on these and other factors that could affect Tourmaline, or its operations or financial results, are included in the Company's most recently filed Management's Discussion and Analysis (See "Forward-Looking Statements" therein), Annual Information Form (See "Risk Factors" and "Forward-Looking Statements" therein) and other reports on file with applicable securities regulatory authorities and may be accessed through the SEDAR+ website (www.sedarplus.ca) or Tourmaline's website (www.tourmalineoil.com).

The forward-looking information contained in this news release is made as of the date hereof and Tourmaline undertakes no obligation to update publicly or revise any forward-looking information, whether as a result of new information, future events or otherwise, unless expressly required by applicable securities laws.

RESERVES DATA

The reserves data set forth above is based upon the reports of GLJ Ltd. ("GLJ") and Deloitte LLP, each dated effective December 31, 2025, which have been consolidated into one report by GLJ and adjusted to apply certain of GLJ's assumptions and methodologies and pricing and cost assumptions. The price forecast used in the reserve evaluations is an average of forecast prices published by Sproule Associates Ltd. as at December 31, 2025 and GLJ and McDaniel & Associates Consultants Ltd. as at January 1, 2026 (each of which is available on their respective websites at www.sproule.com, www.gljpc.com, and www.mcdan.com), and will be contained in the Company's Annual Information Form for the year ended December 31, 2025, which will be filed on SEDAR+ (accessible at www.sedarplus.ca) on or before March 31, 2026.

There are numerous uncertainties inherent in estimating quantities of crude oil, natural gas and NGL reserves and the future cash flows attributed to such reserves. The reserve and associated cash flow information set forth above are estimates only. In general, estimates of economically recoverable crude oil, natural gas and NGL reserves and the future net cash flows therefrom are based upon a number of variable factors and assumptions, such as historical production from the properties, production rates, ultimate reserve recovery, timing and amount of capital expenditures, marketability of oil and natural gas, royalty rates, the assumed effects of regulation by governmental agencies and future operating costs, all of which may vary materially. For those reasons, estimates of the economically recoverable crude oil, NGL and natural gas reserves attributable to any particular group of properties, classification of such reserves based on risk of recovery and estimates of future net revenues associated with reserves prepared by different engineers, or by the same engineers at different times, may vary. The Company's actual production, revenues, taxes and development and operating expenditures with respect to its reserves will vary from estimates thereof and such variations could be material.

All evaluations and reviews of future net revenue are stated prior to any provisions for interest costs or general and administrative costs and after the deduction of estimated future capital expenditures for wells to which reserves have been assigned. The after-tax net present value of the Company's oil and gas properties reflects the tax burden on the properties on a stand-alone basis and utilizes the Company's tax pools. It does not consider the corporate tax situation, or tax planning. It does not provide an estimate of the after-tax value of the Company, which may be significantly different. The Company's financial statements and the management's discussion and analysis should be consulted for information at the level of the Company.

The estimates of reserves and future net revenue for individual properties may not reflect the same confidence level as estimates of reserves and future net revenue for all properties, due to effects of aggregations. The estimated values of future net revenue disclosed in this news release do not represent fair market value. There is no assurance that the forecast prices and cost assumptions used in the reserve evaluations will be attained and variances could be material.

The reserve data provided in this news release presents only a portion of the disclosure required under National Instrument 51-101. All of the required information will be contained in the Company's Annual Information Form for the year ended December 31, 2025, which will be filed on (SEDAR+ accessible at www.sedarplus.ca) on or before March 31, 2026.

BOE Equivalency

In this news release, production and reserves information may be presented on a "barrel of oil equivalent" or "BOE" basis. BOEs may be misleading, particularly if used in isolation. A BOE conversion ratio of 6 Mcf:1 bbl is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead. In addition, as the value ratio between natural gas and crude oil based on the current prices of natural gas and crude oil is significantly different from the energy equivalency of 6:1, utilizing a conversion on a 6:1 basis may be misleading as an indication of value.

INDUSTRY METRICS

This news release contains metrics commonly used in the oil and natural gas industry. Each of these metrics is determined by the Company as set out below or elsewhere in this news release. These metrics are "F&D" costs, "FD&A" costs, "recycle ratio", "F&D recycle ratio", and "FD&A recycle ratio". These metrics are considered "non-GAAP ratios" and do not have standardized meanings and may not be comparable to similar measures presented by other companies. As such, they should not be used to make comparisons. See "Non-GAAP and Other Financial Measures" in this news release and in the Annual MD&A. The non-GAAP financial measures used as a component of these non-GAAP ratios are capital expenditures and cash flow.

Management uses these oil and gas metrics for its own performance measurements and to provide shareholders with measures to compare the Company's performance over time, however, such measures are not reliable indicators of the Company's future performance and future performance may not compare to the performance in previous periods.

"F&D" costs are calculated by dividing the sum of the total capital expenditures for the year (in dollars) by the change in reserves within the applicable reserves category (in boe). F&D costs, including FDC, includes all capital expenditures in the year as well as the change in FDC required to bring the reserves within the specified reserves category on production.

"FD&A" costs are calculated by dividing the sum of the total capital expenditures for the year inclusive of the net acquisition costs and disposition proceeds (in dollars) by the change in reserves within the applicable reserves category inclusive of changes due to acquisitions and dispositions (in boe). FD&A costs, including FDC, includes all capital expenditures in the year inclusive of the net acquisition costs and disposition proceeds as well as the change in FDC required to bring the reserves within the specified reserves category on production.

The "recycle ratio" is calculated by dividing the cash flow per boe by the appropriate F&D or FD&A costs related to the reserve additions for that year.

The Company uses F&D and FD&A as a measure of the efficiency of its overall capital program including the effect of acquisitions and dispositions. The aggregate of the exploration and development costs incurred in the most recent financial year and the change during that year in estimated future development costs generally will not reflect total finding and development costs related to reserves additions for that year.

FINANCIAL OUTLOOKS

Also included in this news release are estimates of Tourmaline's 2026 CF and FCF and long-term net debt, which are based on, among other things, the various assumptions as to production levels, receipt of drilling permits, capital expenditures and other assumptions disclosed in this news release and, with respect to 2026 CF and FCF and long-term net debt, Tourmaline's estimated average production of 620,000 -- 640,000 boepd, commodity price assumptions for natural gas ($3.85/mmbtu US, $1.88/mcf AECO, $2.49/mmbtu PG&E Citygate U.S., $13.00/mcf JKM U.S.), crude oil ($66.77/bbl WTI U.S.) and an exchange rate assumption (USD/CAD) of $0.74. In addition, such estimates are provided for illustration only and are based on budgets and forecasts as of the date hereof that are subject to change and a variety of contingencies including prior years' results. To the extent such estimates constitute a financial outlook, they are included to provide readers with an understanding of Tourmaline's anticipated CF and FCF and long-term net levels based on the capital expenditure, production, pricing, exchange rate and other assumptions described herein and readers are cautioned that the information may not be appropriate for other purposes.

NON-GAAP AND OTHER FINANCIAL MEASURES

This news release contains the terms "cash flow", "capital expenditures", "EP expenditures", "free cash flow", and "operating netback", which are considered "non-GAAP financial measures" and the terms "cash flow per diluted share", "free cash flow per diluted share", "operating netback per boe", and "cash flow per-boe", which are considered "non-GAAP financial ratios". These terms do not have a standardized meaning prescribed by GAAP. In addition, this news release contains the terms "adjusted working capital" and "net debt", which are considered "capital management measures" and do not have standardized meanings prescribed by GAAP. Accordingly, the Company's use of these terms may not be comparable to similarly defined measures presented by other companies. Investors are cautioned that these measures should not be construed as an alternative to or more meaningful than the most directly comparable GAAP measures in evaluating the Company's performance. See "Non-GAAP and Other Financial Measures" in the most recent Management's Discussion and Analysis for more information on the definition and description of these terms.

Non-GAAP Financial Measures

Cash Flow

Management uses the term "cash flow" for its own performance measure and to provide shareholders and potential investors with a measurement of the Company's efficiency and its ability to generate the cash (net of current income taxes) necessary to fund its future growth expenditures, to repay debt or to pay dividends. The most directly comparable GAAP measure for cash flow is cash flow from operating activities. A summary of the reconciliation of cash flow from operating activities to cash flow is set forth below:

 
                            Three Months Ended    Years Ended 
                             December 31,          December 31, 
(000s)                      2025        2024      2025         2024 
Cash flow from operating 
 activities (per GAAP)        $700,112  $666,110   $3,387,019   $2,729,780 
Current income taxes(1)       (11,039)  (36,665)     (33,228)     (65,173) 
Current income taxes paid 
 (recovered)                     3,246      (34)       31,382      526,768 
Change in non-cash working 
 capital (deficit)             197,798   220,919       10,397       27,116 
Cash flow                    $ 890,117  $850,330  $ 3,395,570  $ 3,218,491 
 
 
 
(1)  For the purposes of this reconciliation, current income 
      taxes exclude $11.3 million of income taxes related 
      to the capital gain on the sale of Topaz shares during 
      the three and twelve months ended December 31, 2025 
      (three and twelve months ended December 31, 2024 - 
      $19.0M). Refer to Notes 11 and 14 of the Company's 
      consolidated financial statements as at and for the 
      year ended December 31, 2025 for further details. 
 

Capital Expenditures

Management uses the term "capital expenditures" as a measure of capital investment in exploration and production activity, as well as property acquisitions and divestitures. The most directly comparable GAAP measure for capital expenditures is cash flow used in investing activities. A summary of the reconciliation of cash flow used in investing activities to capital expenditures is set forth below:

 
                                 Three Months Ended    Years Ended 
                                  December 31,          December 31, 
(000s)                           2025       2024       2025        2024 
Cash flow used in investing 
 activities (per GAAP)           $ 523,856  $ 123,552  $2,733,529  $ 1,638,627 
Corporate acquisitions                  --  (169,040)          --    (169,040) 
Change in non-cash working 
 capital                            82,904    174,216    (10,675)      100,409 
Investment in long-term asset           --         --    (11,800)           -- 
Proceeds from sale of 
 investments                       221,226    331,465     221,226      331,465 
Capital expenditures             $ 827,986  $ 460,193  $2,932,280  $ 1,901,461 
 

EP Expenditures

Management uses the term "EP expenditures" or exploration and production expenditures as a measure of capital investment in exploration and production activity, and such spending is compared to the Company's annual budgeted exploration and production expenditures. The most directly comparable GAAP measure for exploration and production spending is cash flow used in investing activities. A summary of the reconciliation of cash flow used in investing activities to exploration and production expenditures is set forth below:

 
                                 Three Months Ended    Years Ended 
                                  December 31,          December 31, 
(000s)                           2025       2024       2025        2024 
Cash flow used in investing 
 activities (per GAAP)           $ 523,856   $123,552  $2,733,529  $ 1,638,627 
Change in non-cash working 
 capital                            82,904    174,216    (10,675)      100,409 
Proceeds from sale of 
 investments                       221,226    331,465     221,226      331,465 
Corporate acquisitions                  --  (169,040)          --    (169,040) 
Investment in long-term asset           --         --    (11,800)           -- 
Property acquisitions              (2,024)    (7,379)    (19,307)     (33,083) 
Proceeds from divestitures             801    300,858      75,622      357,692 
Other                             (14,028)   (10,256)    (62,883)     (52,607) 
Exploration and production 
 expenditures                    $ 812,735  $ 743,416  $2,925,712  $ 2,173,463 
 

Free Cash Flow

Management uses the term "free cash flow" for its own performance measure and to provide shareholders and potential investors with a measurement of the Company's efficiency and its ability to generate the cash necessary to fund its future growth expenditures, to repay debt and provide shareholder returns. Free cash flow is defined as cash flow less capital expenditures, excluding acquisitions and dispositions. Free cash flow is prior to dividend payment. The most directly comparable GAAP measure for cash flow is cash flow from operating activities. See "Non-GAAP Financial Measures -- Cash Flow" and " Non-GAAP Financial Measures -- Capital Expenditures" above.

 
                             Three Months Ended    Years Ended 
                              December 31,          December 31, 
(000s)                       2025       2024       2025         2024 
Cash flow                    $ 890,117   $850,330   $3,395,570  $ 3,218,491 
Capital expenditures         (827,986)  (460,193)  (2,932,280)  (1,901,461) 
Property acquisitions            2,024      7,379       19,307       33,083 
Proceeds from divestitures       (801)  (300,858)     (75,622)    (357,692) 
Free Cash Flow                 $63,354   $ 96,658    $ 406,975     $992,421 
 

Operating Netback

Management uses the term "operating netback" as a key performance indicator and one that is commonly presented by other oil and natural gas producers. Operating netback is defined as the sum of commodity sales from production, premium on risk management activities and realized gain on financial instruments less the sum of royalties, transportation costs and operating expenses. A summary of the reconciliation of operating netback from commodity sales from production, which is a GAAP measure, is set forth below:

 
                             Three Months Ended       Years Ended 
                              December 31,             December 31, 
(000s)                       2025         2024        2025         2024 
Commodity sales from 
 production                  $ 1,423,017  $1,215,050   $4,940,024   $4,729,771 
Premium on risk management 
 activities                      202,830     280,791    1,230,294      828,468 
Realized gain on financial 
 instruments                      88,813     127,978      420,981      486,534 
Royalties                      (135,121)   (125,699)    (513,879)    (509,252) 
Transportation costs           (306,801)   (276,602)  (1,198,061)  (1,082,592) 
Operating expenses             (282,530)   (251,594)  (1,148,182)  (1,006,541) 
Operating netback              $ 990,208    $969,924   $3,731,177   $3,446,388 
 

Non-GAAP Financial Ratios

Operating Netback per-boe

Management calculates "operating netback per-boe" as operating netback divided by total production for the period. Operating netback per-boe is a key performance indicator and measure of operational efficiency and one that is commonly presented by other oil and natural gas producers. A summary of the calculation of operating netback per boe is set forth below:

 
                                       Three Months Ended    Years Ended 
                                        December 31,          December 31, 
($/boe)                                2025       2024       2025     2024 
Revenue, excluding processing income     $ 28.27    $ 29.15  $ 28.30  $ 28.52 
Royalties                                 (2.23)     (2.26)   (2.21)   (2.40) 
Transportation costs                      (5.06)     (4.97)   (5.14)   (5.11) 
Operating expenses                        (4.66)     (4.52)   (4.93)   (4.75) 
Operating netback                        $ 16.32    $ 17.40  $ 16.02  $ 16.26 
 

Cash Flow per-boe

Management uses cash flow per boe to highlight how much cash flow is generated by each boe produced. The ratio is calculated by dividing cash flow by total production for the period. See "Non-GAAP Financial Measures -- Cash Flow". See "Reserves Performance Ratios" section for information on annual cash flow per boe and comparative period data used.

Finding and Development Costs, Finding, Development and Acquisition Costs and Recycle Ratio

See "Reserves Performance Ratios" and "Industry Metrics" for information on the composition of the non-GAAP financial measures used as a component of and comparative period data for finding and development costs, finding, development and acquisition costs and recycle ratio.

Capital Management Measures

Adjusted Working Capital

Management uses the term "adjusted working capital" for its own performance measures and to provide shareholders and potential investors with a measurement of the Company's liquidity. A summary of the reconciliation of working capital (deficit) to adjusted working capital (deficit), is set forth below:

 
                                                    As at December 31, 
(000s)                                              2025         2024 
Working capital (deficit)                           $ (419,306)  $ (167,623) 
Fair value of financial instruments -- short-term 
 (asset)                                              (135,676)    (315,365) 
Lease liabilities -- short-term                           8,034        8,385 
Decommissioning obligations -- short-term                75,000       60,000 
Unrealized foreign exchange in working capital -- 
 (asset) liability                                          991     (15,354) 
Adjusted working capital (deficit)                  $ (470,957)   $(429,957) 
 

Net Debt

Management uses the term "net debt", as a key measure for evaluating its capital structure and to provide shareholders and potential investors with a measurement of the Company's total indebtedness. A summary of the composition of net debt, is set forth below:

 
                                     As at December 31, 
(000s)                               2025           2024 
Long-term debt                       $ (1,052,914)  $ (1,272,775) 
Adjusted working capital (deficit)       (470,957)      (429,957) 
Net debt                             $ (1,523,871)  $ (1,702,732) 
 

Supplementary Financial Measures

The following measures are supplementary financial measures: cash flow per diluted share, reserve value per diluted share, operating expenses ($/boe), cash general and administrative expenses ($/boe) and transportation costs ($/boe). These measures are calculated by dividing the numerator by a diluted share count or by total production for the period, depending on the financial measure discussed.

ESTIMATED DRILLING INVENTORY

This news release discloses drilling locations. Drilling locations are categorized as follows: (i) proved undeveloped locations; (ii) probable undeveloped locations; (iii) unbooked locations; and (iv) an aggregate total of (i), (ii) and (iii). Of the 26,512 (gross) locations disclosed in this news release, 2,316 are proved undeveloped locations (including drilled-uncompleted locations ("DUCs")), 1,757 are probable undeveloped locations, and 22,439 are unbooked. Proved producing wells, proved undeveloped locations, including DUCs, and probable undeveloped locations are booked and derived from the Company's most recent independent reserves evaluation as prepared by GLJ and Deloitte LLP as of December 31, 2025, and account for drilling locations that have associated proved and/or probable reserves, as applicable. Unbooked locations are internal estimates based on the Company's prospective acreage and an assumption as to the number of wells that can be drilled per section based on industry practice and internal review. Unbooked locations do not have attributed reserves or resources (including contingent and prospective). Unbooked locations have been identified by management as an estimation of the Company's multi-year drilling activities based on evaluation of applicable geologic, seismic, engineering, production and reserves information. There is no certainty that the Company will drill all unbooked drilling locations and if drilled there is no certainty that such locations will result in additional oil and gas reserves, resources or production. The drilling locations on which the Company will actually drill wells, including the number and timing thereof is ultimately dependent upon the availability of funding, regulatory approvals, seasonal restrictions, oil and natural gas prices, costs, actual drilling results, additional reservoir information that is obtained and other factors. While a certain number of the unbooked drilling locations have been derisked by drilling existing wells in relative close proximity to such unbooked drilling locations, the majority of other unbooked drilling locations are farther away from existing wells where management has less information about the characteristics of the reservoir and therefore there is more uncertainty whether wells will be drilled in such locations and if drilled there is more uncertainty that such wells will result in additional oil and gas reserves, resources or production.

SUPPLEMENTAL INFORMATION REGARDING PRODUCT TYPES

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