Q4 & FY 2024 RESULTS AND YEAR-END 2024 RESERVES

Exhibit 99.1

VAALCO ENERGY, INC. ANNOUNCES FOURTH QUARTER AND RECORD FULL YEAR 2024 FINANCIAL AND OPERATING RESULTS AND YEAR-END 2024 RESERVES

HOUSTON - March 14, 2025  - VAALCO Energy, Inc. (NYSE: EGY, LSE: EGY) ("Vaalco" or the "Company") today reported operational and financial results for the fourth quarter and full year of 2024 and year-end 2024 reserves. The Company also provided 2025 operational and financial guidance for the first quarter and full year of 2025.

Fourth Quarter 2024 Highlights:

• Reported net income of $11.7 million ($0.11 per diluted share) and Adjusted EBITDAX(1) of $76.2 million; 

• Produced 20,775 net revenue interest ("NRI")(2) barrels of oil equivalent per day ("BOEPD") or 25,300 Working interest ("WI")(3) BOEPD, both at the midpoint of guidance; and

• Sold 20,352 NRI BOEPD in Q4 2024, toward the high end of guidance.

2024 Full Year Highlights:

• Reported full year ("FY") 2024 net income of $58.5 million ($0.56 per diluted share) and net cash from operating activities of $113.7 million;

• Generated record Adjusted EBITDAX(1) of $303.0 million in FY 2024;

• Grew production in 2024 by 7% year-over-year to 19,936 NRI(2) BOEPD, at the midpoint of the Company's increased guidance;

◦ WI(3) production of 24,738 BOEPD, was also at the midpoint of Vaalco's increased guidance;

• Sold 19,843 NRI BOEPD, above the midpoint of the Company's increased guidance;

• Increased year-end 2024 SEC proved reserves by 57% to 45.0 million barrels of oil equivalent ("MMBOE");

• Closed the accretive all cash acquisition of Svenska Petroleum Exploration AB ("Svenska") for a net purchase price of $40.2 million;

◦ Strategically expanded West African focus area with a sizeable producing asset that has significant upside potential and future development opportunities in Cote d'Ivoire, a well-established and investment-friendly country;

◦ Paid back 1.8x(4) Vaalco's initial net investment in Côte d'Ivoire in the eight months since closing and the performance of the asset has tracked well ahead of the Company's expectations at the time of the acquisition;

• Completed Production Sharing Contracts ("PSCs") with the Government of Gabon for the offshore Niosi Marin and Guduma Marin exploration blocks; and

• Returned $33 million to shareholders in 2024, as well as $83.4 million over the past two years through dividends and buybacks.

2025 Key Items and Outlook:

• Entered into new revolving credit facility with an initial commitment of $190 million with the ability to grow to $300 million, secured by Vaalco's Gabon, Egypt and Côte d'Ivoire assets;

• Acquired 70% WI(3) in and will operate the CI-705 block in offshore Côte D'Ivoire;

• Planning a 2025 capital budget of $270 to $330 million, including a drilling campaign at Etame, Côte d'Ivoire Floating Production Storage and Offloading vessel ("FPSO") Dry Dock Refurbishment Project and continued drilling in Egypt and Canada; and

• Target to return over $25 million to shareholders through Vaalco's dividend program.

(1) Adjusted EBITDAX, Adjusted Net Income, Adjusted Working Capital and Free Cash Flow are Non-GAAP financial measures and are described and reconciled to the closest GAAP measure in the attached table under "Non-GAAP Financial Measures."

(2) All NRI sales and production rates are Vaalco's working interest volumes less royalty volumes, where applicable.

(3) All WI production rates and volumes are Vaalco's working interest volumes, where applicable.

(4) Payback of 1.8x is based on unaudited operational cash flow for the Côte d'Ivoire assets compared to the acquisition price of $40.2 million as of December 31, 2024.

George Maxwell, Vaalco's Chief Executive Officer commented, "We have delivered another successful and record setting performance in 2024, where we continued to execute our strategic vision of maintaining operational excellence and profitably growing production and reserves. Since 2021, we have transformed Vaalco through acquisitions and organic growth, expanding our asset base, nearly tripling production and quadrupling proved reserves. We have consistently delivered operationally and financially, meeting or exceeding our guidance and generating record production, sales and Adjusted EBITDAX. We have accomplished all of this without losing sight of our commitment to sustainably return value to our shareholders and over the past two years have returned over $83 million through dividends and buybacks."

"As we look forward to 2025, we are excited about the major projects that we have planned which are expected to deliver a step-change in organic growth across our portfolio in the coming years. We have another drilling campaign at Etame that we believe will expand our production and reserves considerably. In Côte D'Ivoire, we have commenced the FPSO refurbishment project and are preparing for a drilling campaign in 2026 to augment the production and economic life of the Baobab field. In Egypt and Canada, we continue to drill, recomplete and workover wells adding to our production base and cash flows. We also have exciting opportunities in offshore Gabon with the Niosi Marin and Guduma Marin exploration blocks that are located in close proximity to the prolific producing fields of Etame and Dussafu. We have farmed into and are operator of the CI-705 block, in offshore Côte D'Ivoire, which is favorably located in a proven petroleum system, near existing infrastructure with access to a strong growing domestic market and attractive upside potential. We are also excited to proceed with our plans to develop, operate, and begin producing from the discovery in Block P offshore Equatorial Guinea over the next few years. Financially, we are well-positioned to fund the meaningful growth and opportunities that we plan to pursue. Last week we announced a new credit facility that will supplement our internally generated cash flow and cash balance to assist in funding our robust organic growth projects."

Mr. Maxwell concluded, "I am proud of all that we have accomplished and would like to thank our hard-working employees for helping us to achieve these milestones. We believe that we are well positioned to continue to execute operationally and financially to achieve even greater growth and value for the rest of the decade. Our focus remains fixed on maximizing value and generating strong operational cash flow to fund our numerous organic opportunities moving forward, all while continuing to return capital to our shareholders through our quarterly dividend policy."

Operational Update

Egypt

Vaalco focused on enhancing production in 2024 through a series of planned workovers, as well as through interventions using the OGS-10 rig. Two additional workover recompletions were completed in the fourth quarter of 2024. With the low cost of workovers, the well economics are strongly positive.

A summary of the Egyptian workover campaign's impact in fourth quarter of 2024 is presented below:

a) Initial Production; 30 day duration

The fourth quarter 2024 drilling campaign started with Arta-92 and Arta-93, in December 2024. The Arta-92 well successfully increased production levels, achieving an initial 30-day average rate of 428 barrels of oil per day ("BOPD") and the Arta-93 has recently come online with an initial 30-day average rate of 95 BOPD.

a) Initial Production; 30 day duration

Canada

The 2024 drilling campaign commenced in January 2024 with all four wells drilled, completed and brought onto production by Q2 2024. In the fourth quarter of 2024, the Company drilled a step-out well in its southern acreage. Vaalco has minimal horizontal subsurface information in this area and the well, if successful, could prove up additional long lateral wells in the future with the potential to add proved undeveloped locations. The Company is continuing to monitor the well's flowback as it has only recently come online in the first quarter of 2025.

Gabon

In October 2022, Vaalco successfully completed its transition to a Floating Storage and Offloading vessel ("FSO") and related field reconfiguration processes. This project provides a low cost FSO solution that increases the storage capacity for the Etame block and improved operational performance. The Company continues to demonstrate operational excellence, production uptime and enhancement in 2024 to optimize production until the next drilling campaign.

In December 2024, Vaalco secured a rig for the 2025/26 drilling campaign at Etame. Vaalco is currently finalizing locations and planning for the next drilling campaign, which is expected to commence in Q3 2025. 

The Company recently completed the documentation with the Government of Gabon for the offshore Niosi Marin and Guduma Marin exploration blocks. This follows the technical provisional award announced in October 2021 granting Vaalco a 37.5% non-operating working interest in the Niosi Marin Block (previously G12-13) and the Guduma Marin Block (previously H12-13) located in shallow waters offshore Gabon, with BW Energy as operator (also holding a 37.5% working interest) and Panoro Energy as a non-operating joint owner with a 25% working interest. The Niosi and Guduma blocks cover areas of 2,974 square kilometers ("km²) and 1,927 km², respectively. The Niosi Block is located adjacent to the Etame Marin Permit, where Vaalco operates a successful ongoing exploration and production campaign. To date, the Etame Marin partners have produced and discovered over 150 million barrels of oil, with multiple fields brought online. The area benefits from significant infrastructure investments, including processing facilities and a new FSO vessel installed by Vaalco in 2022 which is located adjacent to the Niosi Marin blocks. The blocks are also adjacent to BW Energy and Panoro Energy's Dussafu PSC offshore Southern Gabon, which is another area of significant successful exploration and development.

Côte d'Ivoire

During the fourth quarter, three liftings took place. In October 2024, 671,166 gross barrels were lifted or 142,674 net barrels to Vaalco. In November 2024, 514,559 gross barrels were lifted or 154,249 net barrels to Vaalco. In December 2024, 286,904 gross barrels were lifted or 81,569 net barrels to Vaalco.

Work with Modec, the operator of the Baobab FPSO, on the dry docking project for the FPSO, continued in the fourth quarter of 2024. In alignment with the project timeline, the FPSO Baobab Ivoirien MV10, ceased hydrocarbon operations as scheduled on January 31, 2025. The final lifting of crude oil from the vessel took place in early February 2025. The project team has commenced mobilization efforts, deploying the necessary workforce support vessels and equipment to facilitate the safe disconnection of the FPSO. The vessel is planned to be towed to the shipyard in Dubai for refurbishment upon departure from the field in March 2025. Significant development drilling is expected to begin in 2026 after the FPSO returns to service with meaningful additions to production from the main Baobab field in CI-40.

In March 2025, Vaalco announced that it has farmed into the CI-705 block offshore Côte d'Ivoire. Vaalco is the operator of the block with a 70% working interest and a 100% paying interest though a commercial carry arrangement and is partnering with Ivory Coast Exploration Oil & Gas SAS and PETROCI. The CI-705 block is located in the prolific Tano basin and is approximately 70 kilometers ("km") to the west of Vaalco's CI-40 Block, where the Baobab and Kossipo oil fields are located, and 60 km west of ENI's recent Calao discovery. Block CI-705 covers approximately 2,300 km2 and is lightly explored with three wells drilled to date on the block. The water depth across the block ranges from zero to 2,500 meters. Vaalco has invested $3 million to acquire its interest in the new block which it believes has significant prospectivity.

Year-End 2024 Reserves

Vaalco's SEC proved reserves at December 31, 2024 increased by 57% to 45.0 MMBOE from 28.6 MMBOE at year-end 2023. Year-end 2024 reserves included 20.9 MMBOE in proved developed reserves and 24.1 MMBOE in proved undeveloped reserves. The Company's SEC reserves were prepared by its third-party independent reserve engineers, Netherland, Sewell & Associates, Inc., ("NSAI") that has provided annual independent estimates of Vaalco's year-end SEC reserves for over 15 years and evaluates Vaalco's Gabonese, Ivorian and Egyptian reserves while GLJ Ltd. ("GLJ") evaluates Vaalco's Canadian reserves. In 2024, the Company added 16.5 MMBOE of SEC proved reserves through the Svenska Acquisition and 7.2 MMBOE due to positive revisions. These additions were partially offset by 7.3 MMBOE of full year 2024 production. VAALCO had a reserve replacement ratio of 324% compared to the 7.3 MMBOE of production in 2024.

The standardized measure of Vaalco's SEC proved reserves, utilizing SEC pricing increased to $379.4 million at December 31, 2024 from $341.9 million at December 31, 2023. This was primarily driven by the additions of reserves from the Svenska acquisition, offset by a decrease in year over year SEC prices which were utilized for the calculation and can be found in the Company's Annual Report on Form 10-K disclosure, which is expected to be filed with the SEC on March 17, 2025.

At year-end 2024, NSAI and GLJ provided the 2P WI CPR estimates of proven and probable reserves which were prepared in accordance with the definitions and guidelines set forth in the 2018 Petroleum Resources Management Systems approved by the Society of Petroleum Engineers as of December 31, 2024 using VAALCO's management assumptions for future commodity pricing and costs shown below under "WI CPR Reserves". The 2P WI CPR reserves attributable to VAALCO's ownership are reported on a WI basis prior to deductions for government royalties. Management's year-end 2024 2P WI CPR estimate of reserves is 96.1 MMBOE to VAALCO's WI, an increase of 24% from 77.3 MMBOE at December 31, 2023. The present value discounted at 10% ("PV-10") of VAALCO's 2P WI CPR reserves at year-end 2024, utilizing management timing assumptions and escalated pricing and cost assumptions, is $686.6 million, up 9% from $630.9 million at December 31, 2023. The PV-10 increase is due to additional reserves from the Svenska acquisition, offset by a decrease due to pricing, natural decline in reserves and cost inflation.

See "PV-10 Value and Probable Reserves" and "WI CPR Reserves" for additional information related to 2P WI CPR reserves and 2P PV-10.

Financial Update - Fourth Quarter of 2024

Vaalco reported net income of $11.7 million ($0.11 per diluted share) for the fourth quarter of 2024, which was up 6% compared with net income of $11.0 million ($0.10 per diluted share) in the third quarter of 2024 and down compared to $44.0 million ($0.41 per diluted share) in the fourth quarter of 2023. The increase in earnings compared with the third quarter of 2024 was driven by lower production expenses, lower depreciation, depletion and amortization and significantly lower income tax expense, partly offset by lower sales volume in Q4 2024 of 1,872,000 BOE compared to a sales volume of 2,134,000 BOE in Q3 2024.

Adjusted EBITDAX totaled $76.2 million in the fourth quarter of 2024, an 18% decrease from $92.8 million in the third quarter of 2024 and down 20% from $95.9 million generated in the same period in 2023. The decrease was primarily due to lower sales and realized pricing. 

In Q4 2024, Vaalco had a net revenue decrease of $18.6 million or 13% compared to Q3 2024 as total NRI sales volumes of 1,872,000 BOE was 12% lower than the Q3 2024 volumes of 2,134,000 BOE and 6% lower compared to 1,994,000 BOE for Q4 2023, primarily due to timing of offshore cargoes. Q4 2024 NRI sales were toward the higher end of Vaalco's guidance.

Q4 2024 realized pricing (net of royalties) was slightly lower compared to Q3 2024 and also 12% lower compared to Q4 2023.

Total production expense (excluding offshore workovers and stock compensation) of $36.5 million in Q4 2024 was a 14% decrease compared to Q3 2024 and a 21% decrease compared to the same period in 2023. The decrease in Q4 2024 was primarily driven by lower production expense in Egypt and Côte d'Ivoire in the quarter.

Q4 2024 and Q3 2024 had minimal offshore workover expense, while Q4 2023 had no workover expense.

Q4 2024 production expense per BOE, excluding offshore workover expense, was $19.52 per BOE which was lower than Q4 2023, primarily due to the increased sales associated with the purchase of the Côte d'Ivoire asset, and slightly lower than Q3 2024.

Depreciation, depletion and amortization ("DD&A") expense for Q4 2024 was $37.0 million which was lower than $47.0 million in Q3 2024 and higher than $20.3 million in Q4 2023. The decrease in Q4 2024 DD&A expense compared to Q3 2024 is due primarily to the impact of the year end depletion adjustments based on the year end reserve reports. The increase in Q4 2024 DD&A expense compared to Q4 2023 is due to higher depletable costs in Côte d'Ivoire partially offset by lower depletable costs in Gabon, Egypt, and Canada.

General and administrative ("G&A") expense, excluding stock-based compensation, increased to $7.1 million in Q4 2024 from $6.0 million in Q3 2024 and from $6.1 million in Q4 2023. The increase in G&A expenses compared to both Q3 2024 and Q4 2023 was primarily due to higher professional service fees, salaries and wages, and accounting and legal fees. Q4 2024 cash G&A was within the Company's guidance.

Non-cash stock-based compensation expense was $1.4 million for Q4 2024 compared to $0.9 million for Q4 2023. Non-cash stock-based compensation expense for Q3 2024 was $0.9 million.

Other income (expense), net, was an expense of $9.7 million for Q4 2024, compared to other income of $0.6 million during Q4 2023 and an expense of $0.5 million for Q3 2024. Other income (expense), net, normally consists of foreign currency losses. Also in Q4 2024, Vaalco recorded a reduction in the bargain purchase gain of $6.4 million as a result of the change in fair value estimates of the net assets acquired in the Svenska acquisition.

Foreign income taxes for Gabon are settled by the government taking oil in-kind. Q4 2024 income tax expense was an expense of $17.2 million and is comprised of current tax expense of $26.2 million and deferred tax benefit of $9.0 million. Current quarter tax was impacted by non-deductible items (such as the Svenska transaction costs) and the change in market value of tax barrels due to Gabon State mark-to-market at quarter end. Q3 2024 income tax expense was an expense of $32.6 million and is comprised of current tax expense of $33.7 million and deferred tax benefit of $1.1 million. Q4 2023 income tax expense was an expense of $37.6 million, comprised of $41.1 million of current tax expense and a deferred tax benefit of $3.5 million. For all periods, Vaalco's overall effective tax rate was impacted by non-deductible items associated with tax rates in foreign jurisdictions higher than the US statutory rate and by non-deductible items associated with operations.

Taxes paid by jurisdiction are as follows:

Financial Update - Full Year 2024

The Company reported net income for the year ended December 31, 2024 of $58.5 million, which is a decrease from the $60.4 million reported for the same period in 2023. The decrease in net income was primarily due to increased DD&A expense, production expenses and credit losses partially offset by higher revenues and a bargain purchase gain related to the Svenska acquisition.

NRI production volumes for full year 2024 were up 6.8% to 7.3 MMBOE compared to 6.8 MMBOE production for the prior year. The increase was driven primarily by production from the assets acquired in the Svenska Acquisition. NRI sales volumes for full year 2024 were up 6.3% to 7.3 MMBOE compared to 6.8 MMBOE sales for the prior year. Crude oil sales are a function of the number and size of crude oil liftings in each quarter and do not always coincide with volumes produced in any given period.

The average realized crude oil price for the year ended December 31, 2024 was $65.64 per barrel, representing a decrease of 0.3% from $65.83 realized in the twelve months of 2023. This slight decrease in crude oil price reflects the softening in commodity pricing over the past year.

Capital Investments/Balance Sheet

For the fourth quarter of 2024, net capital expenditures totaled $41.5 million on a cash basis and $36.4 million on an accrual basis. For the full year 2024, net capital expenditures totaled $103.0 million on a cash basis and $109.4 million on an accrual basis. These expenditures were primarily related to costs associated with the development drilling programs in Egypt and Canada, as well as maintenance, project costs and long lead items for Gabon and Côte d'Ivoire.

At the end of the fourth quarter of 2024, Vaalco had an unrestricted cash balance of $82.6 million. Working capital at December 31, 2024 was $56.2 million compared with $100.7 million at December 31, 2023, while Adjusted Working Capital at December 31, 2024 totaled $73.1 million.

In March 2025, Vaalco entered into a new revolving credit facility the ("new facility") with an initial commitment of $190 million and the ability to grow to $300 million, led by The Standard Bank of South Africa Limited, Isle of Man Branch with other participating banks and financial partners. This new facility, which is subject to customary administrative conditional precedents, replaces the Company's existing undrawn revolving credit facility that was provided by Glencore Energy UK Ltd. The Company arranged the new facility primarily to provide short-term funding that may be needed from time-to-time to supplement its internally generated cash flow and cash balance as it executes its planned investment programs across its diversified asset base over the next few years. 

Quarterly Cash Dividend

Vaalco paid a quarterly cash dividend of $0.0625 per share of common stock for the fourth quarter of 2024 on December 20, 2024. The Company also recently announced its next quarterly cash dividend of $0.0625 per share of common stock for the first quarter of 2025 ($0.25 annualized), to be paid on March 28, 2025 to stockholders of record at the close of business on February 28, 2025. Future declarations of quarterly dividends and the establishment of future record and payment dates are subject to approval by the Vaalco Board of Directors.

Hedging

The Company continued to opportunistically hedge a portion of its expected future production to lock in strong cash flow generation to assist in funding its capital and shareholder returns programs.

The following includes hedges remaining in place as of the end of the fourth quarter of 2024:

a) One gigajoule (GJ) equals one billion joules (J). A gigajoule of natural gas is about 25.5 cubic metres at standard conditions.

Subsequent to December 31, 2024, the Company entered into the following additional derivative contracts to cover its future anticipated production:

2025 Guidance:

The Company has provided first quarter 2025 guidance and its full year 2025 guidance. All of the quarterly and annual guidance is detailed in the tables below.

Conference Call

As previously announced, the Company will hold a conference call to discuss its fourth quarter 2024 financial and operating results, Friday, March 14, 2025, at 10:00 a.m. Central Time (11:00 a.m. Eastern Time and 3:00 p.m. London Time). Interested parties may participate by dialing (833) 685-0907. Parties in the United Kingdom may participate toll-free by dialing 08082389064 and other international parties may dial (412) 317-5741. Participants should request to be joined to the "Vaalco Energy Fourth Quarter 2024 Conference Call." This call will also be webcast on Vaalco's website at www.vaalco.com. An archived audio replay will be available on Vaalco's website.

A "Q4 2024 Supplemental Information" investor deck will be posted to Vaalco's website prior to its conference call on March 14, 2025 that includes additional financial and operational information.

About Vaalco

Vaalco, founded in 1985 and incorporated under the laws of Delaware, is a Houston, Texas, USA based, independent energy company with a diverse portfolio of production, development and exploration assets across Gabon, Egypt, Côte d'Ivoire, Equatorial Guinea, Nigeria and Canada.

For Further Information

Forward Looking Statements

This press release includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act") and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbors created by those laws and other applicable laws and "forward-looking information" within the meaning of applicable Canadian securities laws. Where a forward-looking statement expresses or implies an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and believed to have a reasonable basis. All statements other than statements of historical fact may be forward-looking statements. The words "anticipate," "believe," "estimate," "expect," "intend," "forecast," "outlook," "aim," "target," "will," "could," "should," "may," "likely," "plan" and "probably" or similar words may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. Forward-looking statements in this press release include, but are not limited to, statements relating to (i) estimates of future drilling, production, sales and costs of acquiring crude oil, natural gas and natural gas liquids; (ii) expectations regarding Vaalco's ability to effectively integrate assets and properties it has acquired as a result of the Svenska acquisition into its operations; (iii) expectations regarding future exploration and the development, growth and potential of Vaalco's operations, project pipeline and investments, and schedule and anticipated benefits to be derived therefrom; (iv) expectations regarding future acquisitions, investments or divestitures; (v) expectations of future dividends; (vi) expectations of future balance sheet strength; and (vii) expectations of future equity and enterprise value.

Such forward-looking statements are subject to risks, uncertainties and other factors, which could cause actual results to differ materially from future results expressed, projected or implied by the forward-looking statements. These risks and uncertainties include, but are not limited to: risks relating to any unforeseen liabilities of Vaalco; the ability to generate cash flows that, along with cash on hand, will be sufficient to support operations and cash requirements; risks relating to the timing and costs of completion for scheduled maintenance of the FPSO servicing the Baobab field; and the risks described under the caption "Risk Factors" in Vaalco's most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q filed with the SEC.

Dividends beyond the first quarter of 2025 have not yet been approved or declared by the Board of Directors for Vaalco. The declaration and payment of future dividends remains at the discretion of the Board and will be determined based on Vaalco's financial results, balance sheet strength, cash and liquidity requirements, future prospects, crude oil and natural gas prices, and other factors deemed relevant by the Board. The Board reserves all powers related to the declaration and payment of dividends. Consequently, in determining the dividend to be declared and paid on Vaalco common stock, the Board may revise or terminate the payment level at any time without prior notice.

Any forward-looking statement made by Vaalco in this press release is based only on information currently available to Vaalco and speaks only as of the date on which it is made. Except as may be required by applicable securities laws, Vaalco undertakes no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

PV-10 Value and Probable Reserves

PV-10 is a non-GAAP financial measure and represents the period-end present value of estimated future cash inflows from VAALCO's reserves, less future development and production costs, discounted at 10% per annum to reflect timing of future cash flows. PV-10 values for 2P WI CPR reserves have been calculated using VAALCO's management assumptions for timing, escalated crude oil price and cost in the case of 2P WI CPR reserves. PV-10 generally differs from standardized measure, the most directly comparable GAAP financial measure, because it generally does not include the effects of income taxes; however, VAALCO's PV-10 does include the effect of income taxes. PV-10 is a widely used measure within the industry and is commonly used by securities analysts, banks and credit rating agencies to evaluate the estimated future net cash flows from proved reserves on a comparative basis across companies or specific properties. VAALCO's PV-10 includes the effect of income taxes. Neither PV-10 nor the standardized measure purports to represent the fair value of the Company's crude oil and natural gas reserves.

VAALCO has provided summations of its PV-10 for its proved and probable reserves on a 2P WI CPR basis in this press release. The SEC strictly prohibits companies from aggregating proved, probable and possible reserves in filings with the SEC due to the different levels of certainty associated with each reserve category. GAAP does not provide a measure of estimated future net cash flows for reserves other than proved reserves and accordingly it is not practicable to reconcile the PV-10 value of 2P WI CPR reserves to a GAAP measure, such as the standardized measure. Investors should be cautioned that estimates of PV-10 of probable reserves, as well as the underlying volumetric estimates, are inherently more uncertain of being recovered and realized than comparable measures for proved reserves. Further, because estimates of probable reserve volumes have not been adjusted for risk due to this uncertainty of recovery, their summation may be of limited use. Nonetheless, VAALCO believes that PV-10 estimates for probable reserves present useful information for investors about the future net cash flows of its reserves in the absence of a comparable GAAP measure such as standardized measure.

WI CPR Reserves

WI CPR reserves represent proved ("1P") and proved plus probable ("2P") estimates as reported by NSAI and GLJ and prepared in accordance with the definitions and guidelines set forth in the 2018 Petroleum Resources Management Systems approved by the Society of Petroleum Engineers. The SEC definitions of proved and probable reserves are different from the definitions contained in the 2018 Petroleum Resources Management Systems approved by the Society of Petroleum Engineers. As a result, 1P and 2P WI CPR reserves may not be comparable to United States standards. The SEC requires United States oil and gas reporting companies, in their filings with the SEC, to disclose only proved reserves after the deduction of royalties and production due to others but permits the optional disclosure of probable and possible reserves in accordance with SEC definitions.

1P and 2P WI CPR reserves, as disclosed herein, may differ from the SEC definitions of proved and probable reserves because:

• Pricing for SEC is the average closing price on the first trading day of each month for the prior year which is then held flat in the future, while the 1P and 2P WI CPR pricing assumption was $79.79 per barrel of oil beginning in 2025, $69.79 in 2026, and inflating 2% thereafter; and

• Lease operating expenses are typically not escalated under the SEC's rules, while for the WI CPR reserves estimates, they are escalated at 2% annually beginning in 2025.

Management uses 1P and 2P WI CPR reserves as a measurement of operating performance because it assists management in strategic planning, budgeting and economic evaluations and in comparing the operating performance of Svenska to other companies. Management believes that the presentation of 1P and 2P WI CPR reserves is useful to its international investors, particularly those that invest in companies trading on the London Stock Exchange, in order to better compare reserve information to other London Stock Exchange-traded companies that report similar measures. However, 1P and 2P WI CPR reserves should not be used as a substitute for proved reserves calculated in accordance with the definitions prescribed by the SEC. In evaluating Vaalco's business, investors should rely on Vaalco's SEC proved reserves and consider 1P and 2P WI CPR reserves only supplementally.

Other Oil and Gas Advisories

Investors are cautioned when viewing BOEs in isolation. BOE conversion ratio is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent a value equivalency at the wellhead. Given that the value ratio based on the current price of crude oil as compared to natural gas is significantly different from the energy equivalencies described above, utilizing such equivalencies may be incomplete as an indication of value.

Inside Information

This announcement contains inside information as defined in Regulation (EU) No. 596/2014 on market abuse which is part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 ("MAR") and is made in accordance with the Company's obligations under article 17 of MAR. The person responsible for arranging the release of this announcement on behalf of Vaalco is Matthew Powers, Corporate Secretary of Vaalco.

VAALCO ENERGY, INC AND SUBSIDIARIES

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VAALCO ENERGY, INC AND SUBSIDIARIES

Consolidated Statements of Operations

VAALCO ENERGY, INC AND SUBSIDIARIES

Condensed Consolidated Statements of Cash Flows

VAALCO ENERGY, INC AND SUBSIDIARIES

Selected Financial and Operating Statistics

(Unaudited)