THIRD QUARTER 2026 RESULTS

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION

VAALCO ENERGY, INC. ANNOUNCES THIRD QUARTER 2026 RESULTS

Production Up Over 20% and Strong Sales Demonstrate Continued Delivery Against Growth Strategy

HOUSTON – November 6, 2026  - VAALCO Energy, Inc. (NYSE: EGY, LSE: EGY) (“Vaalco” or the “Company”) today reported operational and financial results for the third quarter 2026. Additionally, the Company provided operational and financial guidance for the fourth quarter and full year of 2026.

Third Quarter 2026 Highlights and Recent Key Items:

• Successfully completed the drilling campaign in Gabon by bringing on the ETSEM-3H development well and releasing the rig in early October;

• Resumed production at Baobab field offshore Côte d’Ivoire in June, completed the first sales lifting in August and began Phase Five drilling operations in September with the first well drilled and completed by year-end 2026, and additional wells coming online in the first half of 2027;

• Sold 18,454 net revenue interest (“NRI”)(1) barrels of oil per day (“BOPD”), toward the high end of guidance, and up 4% from Q2 2026;

• Produced 25,284 working interest (“WI”)(2) BOPD or 20,145 NRI(1) BOPD an increase of about 21% compared to Q2 2026;

• Reported net loss of $39.8 million ($0.38 per diluted share), driven primarily by a non-cash loss on derivative instruments;

• Increased Adjusted EBITDAX(3) by 30% to $71.1 million compared to Q2 2026;

• Invested $86.9 million in capital expenditures, advancing key growth programs across the portfolio, including the completion of the Gabon Phase Three Drilling Program, costs associated with restarting of the Baobab field and commencement of the Phase Five drilling campaign in Côte d’Ivoire and continued drilling in Egypt;

• Projecting continued solid operational results with fourth quarter guidance including:

◦ Forecasting Q4 2026 sales volumes to increase to a range between 20,800 and 22,600 NRI BOPD, an 18% increase compared to Q3 2026 (at the midpoint of guidance) ;

◦ Expected Q4 2026 production to be between 18,800 and 20,900 NRI BOPD;

◦ Decreased capital guidance forecast for Q4 2026 to between $55 and $75 million;

• Declared quarterly cash dividend of $0.0625 per share of common stock to be paid on December 22, 2026.

George Maxwell, Vaalco’s Chief Executive Officer, commented, “The third quarter results continue to demonstrate our ability to successfully execute on our strategy as we deliver on our forecasts and grow production in a strong commodity price environment. In Q3 2026, we had strong sales volumes, toward the high end of our guidance, with production up 21% compared to Q2 2026 and continued increased realized pricing. All three of our producing areas, Egypt, Côte d’Ivoire and Gabon, saw production increases. The increased sales and pricing drove a 30% increase in Adjusted EBITDAX to $71.1 million. Operationally, we successfully completed our drilling campaign in Gabon and released the rig in early October. We drilled and brought online five wells at Etame in conjunction with this drilling campaign and our year-over-year WI production at Etame is up almost 2,500 BOPD. After successfully bringing the Baobab field back online in June, we had our first Côte d’Ivoire lifting in August and kicked off the Phase Five drilling campaign in September. In Egypt, we continue with our successful drilling program that is profitably increasing production. We have a diversified portfolio of assets in investor friendly countries in West and North Africa with significant future organic growth opportunities.”

Mr. Maxwell concluded, “As we look to 2027, we are projecting significant increases in production and strong sales, which coupled with continued attractive pricing should generate solid operational cash flow and Adjusted EBITDAX generation. We are forecasting free cash flow generation in the second half of 2027, assuming sustained strong commodity pricing. We will have an active drilling program in Côte d’Ivoire and Egypt in 2027 that should continue to grow our production. We remain confident in our strategic vision with continued operational success and preparing for our next major programs at Venus in Equatorial Guinea and Kossipo in Côte d’Ivoire, which should organically double the Company’s production. Vaalco is well positioned for organic growth in 2027 and beyond.”

Operational Update

Gabon

Vaalco successfully drilled and completed the ETBNM-3 gas-supply well from the SEENT platform. This well was directionally drilled adjacent to a discovery well and targeted gas and condensate resources in the Dentale D15 reservoir. The well was successfully brought online and its natural gas production is now being utilized for field operations to significantly reduce reliance on higher priced diesel that was being transported to the field by vessel. Vaalco continued the drilling campaign in offshore Gabon by skidding the rig in July to a new slot on the SEENT platform to drill the ETSEM-3H development well. This development well was successfully drilled, completed and placed on production in an attic position within the SE Etame field, with a lateral wellbore of 300 meters of net pay in high-quality Gamba reservoir sands. The Phase Three Drilling Program is now complete and the drill rig has been demobilized from the field.

In addition, the BWE Consortium completed its 3D seismic campaign across the Niosi and Guduma blocks in January 2026. The seismic data processing and interpretation are currently ongoing.

Côte d’Ivoire

Following the completion of its planned dry dock refurbishment in February 2026, the Baobab Ivoirien Floating, Production, Storage and Offloading vessel (“FPSO”) returned to Côte d’Ivoire and was successfully reconnected to field infrastructure in early April 2026. Production resumed from all producer wells in June 2026, and the first crude oil lifting was completed in August 2026. The Phase Five drilling campaign commenced following the batch-setting of top-holes by the operator. After the top-hole sections of all wells are drilled, the wells will then be completed and placed on production sequentially. The first production well is planned to come online near the end of 2026. The campaign will support future production growth and the continued development of the main Baobab field in Block CI-40.

The Company is also the operator of exploration license CI-705 with a 70% working interest. In September 2026, the Company and its partners agreed to proceed with the second exploration phase and submitted the required request for approval to the Directorate General of Hydrocarbons. Subject to such approval and entry into the second exploration phase, the Company will be required under the CI-705 PSC to relinquish approximately 25% of the Phase 1 Block CI-705 area and undertake certain minimum work and investment obligations, including the reprocessing of 3D seismic data, geological and geophysical studies, and the drilling of one firm exploration well.

In February 2026, the Company became the operator with a 60% working interest in the Kossipo field on the CI-40 Block with a field development plan (“FDP”) being actively progressed toward completion in the first half of 2027. Vaalco continues analyzing ocean bottom node (“OBN”) seismic data that was recently acquired which is helping to drive and de-risk the Company’s updated evaluation as it progresses with the FDP.

Egypt

The 2026 drilling campaign in Egypt, which commenced in May 2026, continued during the third quarter with five development wells drilled and completed. Drilling also commenced on two additional wells during the quarter that were completed in October 2026. Vaalco now plans to maintain an ongoing drilling program in Egypt into 2027.

Vaalco continues to successfully execute workovers, well interventions, well reactivations, water shut-off treatments, and production optimization activities that are contributing to the organic growth of the Company’s production and reserves in Egypt.

Equatorial Guinea

Vaalco owns a 60% working interest in an undeveloped portion of Block P offshore Equatorial Guinea where it is the designated operator. The Company has an existing plan of development of the Venus field discovery on Block P, which focuses on key areas of drilling evaluations, facilities design, market inquiries and metocean review. The Company has completed the initial Front End Engineering and Design study that confirmed the viability of the development concept and is currently evaluating alternative technical solutions which may deliver enhanced economic value. Work is progressing towards Final Investment Decision expected in Q4 2026.

Financial Update – Third Quarter of 2026

Vaalco reported net loss of $39.8 million ($0.38 per diluted share) for Q3 2026 which included $34.7 million of unrealized hedging losses and was down compared with net income of $42.4 million ($0.39 per diluted share) in Q2 2026 and net income of $1.1 million ($0.01 per diluted share) in Q3 2025. The decrease in earnings compared with Q2 2026 and Q3 2025 was driven primarily by hedging losses and depletion expenses, partially offset by an increase in revenues, and increase in production expenses compared with Q3 2025.

Adjusted EBITDAX totaled $71.1 million in Q3 2026, an increase of 30% when compared with $54.8 million in Q2 2026 and a three-fold increase from the $23.7 million generated in Q3 2025. The increase was primarily the result of higher realized commodity prices and sales volumes which led to higher revenue.

In Q3 2026, Vaalco had a net revenue increase of $11.8 million or 9% compared to Q2 2026 driven by an increase in the total NRI sales volumes of 1,698 MBOE which was 5% higher than the Q2 2026 volumes of 1,621 MBOE. This was primarily attributed to the first Côte d’Ivoire lifting in 2026 and higher sales in Egypt. Q3 2026 sales volumes were 44% higher than Q3 2025 primarily due to the resumed production and sales in Côte d’Ivoire. Average realized price received of $83.64 per BOE in Q3 2026 was higher compared to $80.77 per BOE in Q2 2026 and higher than Q3 2025 of $51.26. Q3 2026 NRI sales were toward the high end of Vaalco’s guidance. Q3 2026 included two liftings in Gabon, the first 2026 lifting in Côte d’Ivoire and increased sales in Egypt.

Total production expense (excluding offshore workovers and stock compensation) decreased in Q3 2026 compared with Q2 2026 and increased compared to Q3 2025 primarily attributable to higher chemical and fuel costs across all operating areas, partially offset by lower production expenses resulting from the Canada Assets Divestment and the change in oil inventory adjustments in Gabon and Côte d’Ivoire. Production expenses associated with unsold crude oil inventory are capitalized at cost and included in inventory, which are then subsequently expensed when oil inventory is sold.

General and administrative (“G&A”) expense, excluding stock-based compensation, decreased in Q3 2026 compared with Q2 2026 primarily driven by a decrease in non-recurring legal and professional service fees.

Exploration expense in Q3 2026 was primarily attributable to Gabon and was higher than the exploration expense for Q3 2025 which was attributable to the purchase of seismic data for Block 705 in Côte d’Ivoire.

Other income (expense), net, includes gains or losses on commodity derivatives, interest expense, net, which includes gains or losses on interest rate derivatives, and foreign currency losses. In Q3 2026, Vaalco reported a net loss on derivative instruments of $57.0 million, which included an unrealized loss of $34.7 million related to the change in fair value of commodity derivative contracts primarily driven by an increase in the futures curve for forecasted commodity prices and a realized loss of $22.3 million on matured commodity derivative contracts.

Vaalco reported an income tax expense for Q3 2026 of $20.3 million, which includes a $4.1 million unfavorable oil price adjustment as a result of the change in value of the government of Gabon’s allocation of Profit Oil between the time it was produced and the time it was taken in-kind. After excluding this impact, income taxes were $16.2 million for the period. Income tax benefit for Q3 2025 was $3.6 million, which included a $3.9 million favorable oil price adjustment as a result of the change in value of the government of Gabon's allocation of Profit Oil between the time it was produced and the time it was taken in-kind. After excluding this impact, current income taxes were $0.3 million for the period.

Taxes paid by jurisdiction are as follows:

Financial Update – First Nine Months of 2026

Net sales for the first nine months of 2026 decreased to 4,413 MBOE compared to 4,662 MBOE reported in the first nine months of 2025. The decrease was driven primarily by the sale of the Canadian assets, Cote d’Ivoire FPSO refurbishment and the timing of Gabon liftings.

The average realized crude oil price for the first nine months was $76.03 per barrel, representing an increase of 32% from the $57.42 realized in the first nine months of 2025. The increase primarily reflects higher benchmark crude oil prices during the current year.

The Company reported a net loss for the nine months ended September 30, 2026 of $91.2 million compared to a net income of $17.2 million for the same period in 2025. The decrease in the results of operations was primarily driven by losses on commodity derivative instruments, higher exploration expenses, increased interest payments and higher taxes.

Capital Investments/Balance Sheet

For the third quarter of 2026, net capital expenditures totaled $86.9 million on a cash basis and $83.9 million on an accrual basis, near the low end of third quarter guidance of $75 million to $115 million . These expenditures were primarily related to the Phase Three Drilling Campaign in offshore Gabon and the expanded drilling campaign in Egypt, as well as expenditures associated with the reconnection activities and drilling campaign in Côte d’Ivoire.

At September 30, 2026, Vaalco had long-term debt of $239.0 million and approximately $61.0 million of liquidity remaining on its reserves based lending facility (the “2025 RBL Facility”). Additionally, Vaalco had cash and cash equivalents of $51.3 million at the end of the third quarter. The Company arranged the 2025 RBL 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. The aggregate commitments will reduce semi-annually starting with a $15.8 million reduction on March 31, 2027, and a $35.5 million reduction for each of the subsequent semi-annual periods starting on September 30, 2027.

Quarterly Cash Dividend

Vaalco paid a quarterly cash dividend of $0.0625 per share of common stock for the third quarter of 2026 on September 22, 2026. The Company also recently announced its next quarterly cash dividend of $0.0625 per share of common stock for the fourth quarter of 2026 ($0.25 annualized), to be paid on December 22, 2026 to stockholders of record at the close of business on November 20, 2026. 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 hedge a portion of its expected future production to protect cash flow generation to assist in funding its capital and shareholder return programs.

The following includes hedges remaining in place as of September 30, 2026:

The table below presents commodity derivative contracts entered into subsequent to September 30, 2026 .

2026 Guidance:

The Company has provided fourth quarter 2026 guidance and its full year 2026 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 third quarter 2026 financial and operating results, Friday, November 6, 2026, at 8:00 a.m. Central Time (9:00 a.m. Eastern Time and 2:00 p.m. London Time). Interested parties may participate by dialing (833) 685-0907. Parties in the United Kingdom may participate toll-free by dialing +44 20 3769 4533 and other international parties may dial (412) 317-5741. Participants should request to be joined to the “Vaalco Energy Third Quarter 2026 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 following the call.

A “Q3 2026 Supplemental Information” investor deck will be posted to Vaalco’s website prior to its conference call on November 6, 2026 that includes additional financial and operational information.

About Vaalco

Vaalco is an African-focused independent energy company with a diversified portfolio of production, development and exploration assets in Gabon, Egypt, Côte d'Ivoire and Equatorial Guinea. The Company combines cash-generative production assets with development and exploration opportunities supported by existing infrastructure and established operating histories.

Since 2021, Vaalco has transformed from a single-asset producer into a multi-country African operator through disciplined acquisitions, portfolio optimization and operational delivery. Led by an experienced management team with a proven track record of value creation, Vaalco combines disciplined capital allocation, shareholder returns and a visible, self-funded pathway to significantly increase production from resources already within its portfolio.

Vaalco is headquartered in Houston and listed on the New York Stock Exchange and the Main Market of the London Stock Exchange under the symbol EGY.

Vaalco’s Legal Entity Identifier (LEI) is 549300CFHFVIWB8M6T24

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 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 (collectively, “forward-looking statements”). 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 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; (iii) expectations regarding future acquisitions, investments or divestitures; (iv) expectations of future dividends; (v) expectations of future balance sheet strength; and (vi) 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; and the risks described under the caption “Risk Factors” in Vaalco’s most recent Annual Report on Form 10-K and any subsequent Quarterly Reports on Form 10-Q filed with the SEC.

Dividends beyond the fourth quarter of 2026 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.

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

Condensed Consolidated Balance Sheets

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VAALCO ENERGY, INC AND SUBSIDIARIES

Consolidated Statements of Operations

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