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B2Gold Provides an Update on Goose Mine Commissioning, Confirms Consolidated 2025 Production Guidance Range, and Provides Operational Updates for the Fekola, Masbate, and Otjikoto Mines

Production Results Mine Development & Operations

B2Gold Provides an Update on Goose Mine Commissioning, Confirms Consolidated 2025

Production Guidance Range, and Provides Operational Updates for the Fekola, Masbate, and

Otjikoto Mines

Vancouver, BC, September 15, 2025 – B2Gold Corp. (TSX: BTO, NYSE AMERICAN: BTG, NSX:

B2G) (“B2Gold” or the “Company”) is announcing an update on operational performance year-to-date in

2025 at each of its four mines. B2Gold confirms 2025 total annual gold production of between 970,000 and

1,075,000 ounces.

Goose Mine - Canada

The Goose Mine achieved first gold pour on June 30, 2025

The mine remains on track for commercial production in the coming weeks, and estimates strong gold

production in Q4 2025

Project commissioning activities are nearing completion at the Goose Mine. Since first gold production in

late June 2025, the Goose mill is achieving consistent performance a nd daily throughput is increasing.

Current daily throughput is approximately 75% of the 4,000 tonnes per day (“tpd”) design capacity (above

the Company’s targeted average commercial production rate of 65% of the design capacity) and will

increase to full design capacity in the near term as described below.

B2Gold anticipates achieving commercial production at the Goose Mine in the coming weeks. The Goose

Mine is currently operating, and plans to achieve commercial production, with the use of supplemental

mobile crushing capacity to ensure a consistent feed of crushed ore to the mill, as crushing plant capacity

has been limited during the third quarter of 2025. B2 Gold believes that with this supplemental mobile

crushing capacity the Goose mill can operate at design capacity of 4,000 tpd following the throughput ramp-

up. Permanent optimizations to the primary crushing and secondary grinding circuits and the installation of

surge bin capacity have been engineered, designed, a nd are being implemented. Use of the mobile crusher

is expected to allow the mill to run at design throughput while these modifications are implemented.

Due to the crushing plant capacity shortfall in the third quarter of 2025, B2Gold is modifying its 2025 gold

production guidance for the Goose Mine to 80,000 to 110,000 ounces (original guidance range of 120,000

to 150,000 ounces). B2Gold anticipates gold production in the fourth quarter of 2025 to be in line with

original estimates of approximately 70,000 ounces. Th e Company reiterates the near-term and long-term

gold production estimates at the Goose Mine, whic h included gold production forecasts of approximately

250,000 ounces of gold production in 2026, approximately 330,000 ounces of gold production in 2027, and

average annual gold production for the initial full six years of operations (2026 to 2031 inclusive) of

approximately 300,000 ounces per year, based only on existing Mineral Reserves.

In addition, work continues on the multiple optimi zation studies for the Goose Mine as previously

announced in March 2025, including the evaluation of a flotation / concentrate leach process and the

potential installation of a SAG mill to be paired in conjunction with the existing 4,000 tpd ball mill, which

could expand mill throughput capacity up to 6,000 tpd. The results of these studies are expected to be

finalized in late 2025, and will also reflect two additio nal value drivers for the Goose Mine related to the

potential reduction in carbon taxes paid over the life of the mine, and a reduction in the annual amount of

fuel consumed as a result of equipment optimizations.

Fekola Complex - Mali

Fekola has continued the strong operational performance exhibited in the first half of the year into the third

quarter of 2025. As of early September 2025, Fekola Complex gold production remains ahead of budgeted

levels year-to-date. On July 30, 2025, the State of Mali granted approval for the Company to commence

underground operations, including stope ore production, at the Fekola Mine. Subsequent to receipt of the

underground mining approval, the Company commenced stope ore production at Fekola underground, and

Fekola underground ore is currently being processed through the Fekola mill. Initial underground gold

grade reconciliations have been positive compared to the resource model.

The Company continues to expect to receive the Fekola Regional exploitation permit by the end of the third

quarter of 2025. Upon receipt of the exploitation permit for Fekola Regional, mining pre-stripping activities

will commence immediately for a period of three months , followed by initial gold production expected to

commence in early 2026. Importantly, the haul road from Fekola Regional to the Fekola Mine is operational

as construction of the haul roads and mining infrastru cture (warehouse, workshop, fuel depot and offices)

was completed on schedule in 2023. Fekola Regional gol d production is expected to begin in early 2026

and will ramp up to average approximately 180,000 ounces per year over its first five years of production

from 2026 through 2030, with a mine life expected to extend well into the 2030’s.

B2Gold reiterates its 2025 gold production guidance for the Fekola Complex of 515,000 to 550,000 ounces.

The Company is modifying the components of how the Fekola Complex gold production guidance will be

achieved to optimize the production profile. Based on the timing of the Fekola Regional exploitation permit

by end of the third quarter of 2025, no gold production from Fekola Regional is anticipated in 2025. Fekola

underground performance has exceeded expectations si nce receipt of the underground mining approval in

late July 2025, and is now anticipated to contribute between 30,000 and 40,000 ounces of gold production

this year (original guidance range of 25,000 to 35,000 ounces). Mining activities at the Fekola and Cardinal

open pits are anticipated to contribute between 485,000 and 510 ,000 ounces of gold production in 2025

(original guidance range of 470,000 to 490,000 ounces).

Otjikoto Mine - Namibia

The Otjikoto Mine has continued to outperform expecta tions into the third quarter of 2025. As previously

disclosed, open pit mining activities at Otjikoto are scheduled to conclude in the near-term. During mining

of the final phases of the Otjikoto pit, ore tonnes and average gold grade mined have exceeded expectations

providing more robust ore stockpiles than previously anticipated.

Due to the positive ore tonne and grade reconciliations described above, the Company is increasing its 2025

gold production guidance for the Otjikoto Mine to 185 ,000 to 205,000 ounces (original guidance range of

165,000 to 185,000 ounces).

B2Gold is pleased to announce it has approved a development decision on the Antelope underground

deposit at the Otjikoto Mine. Subsequent to the release of the Preliminary Economic Assessment results for

the Antelope deposit on February 4, 2025, the Comp any has completed further optimization work on a

small-scale, low-cost, underground gold mine at Ante lope, and believe that the estimated pre-production

capital cost can be reduced from $129 million to $105 million. The majority of pre-production capital is

estimated to be spent in 2026 and 2027, with production from Antelope having the potential to increase

Otjikoto Mine gold production to a pproximately 110,000 ounces per year over the life of the Antelope

underground mine.

Masbate Mine – The Philippines

The Masbate Mine has also outperformed expectations in the third quarter of 2025, a continuation of the

outperformance experienced in the first half of 2025. At the beginning of 2025, Masbate was projected to

process 8.0 million tonnes of ore at an average grad e of 0.88 grams per tonne gold with a process gold

recovery of 79.9%. Throughout the first half of 2025, mill throughput exceeded expectations while mill

feed grade and gold recoveries have been in line with expectations.

Based on the strong mill throughput rates experienced in the first half of 2025 that are expected to continue

into the second half of the year, B2Gold is increasi ng its 2025 gold production guidance for the Masbate

Mine to 190,000 to 210,000 ounces (original guidance range of 170,000 to 190,000 ounces).

About B2Gold Corp.

B2Gold is a responsible international senior gold producer headquartered in Vancouver, Canada. Founded

in 2007, today, B2Gold has operating gold mines in Canada, Mali, Namibia and the Philippines, and

numerous development and exploration projects in various countries. B2Gold forecasts gold production of

between 970,000 and 1,075,000 ounces in 2025.

Qualified Persons

Bill Lytle, Senior Vice President and Chief Operating Officer, a qualified person under NI 43-101, has

approved the scientific and technical information related to operations matters contained in this news

release.

ON BEHALF OF B2GOLD CORP.

“Clive T. Johnson”

President & Chief Executive Officer

For more information on B2Gold, please visit the Company’s website at www.b2gold.com or contact:

Michael McDonald

VP, Investor Relations, Corporate Development & Treasury

+1 604-681-8371

[email protected]

The Toronto Stock Exchange and NYSE American LL C neither approve nor disapprove the information

contained in this news release.

Production guidance presented in this news release re flect total production at the mines B2Gold operates

on a 100% project basis. Please see our Annual Information Form dated March 28, 2025, for a discussion

of our ownership interest in the mines B2Gold operates.

This news release includes certain "forward-looking information" and "forwa rd-looking statements"

("collectively forward-looking statements") within the meaning of applicable Canadian and United States

securities legislation, including: projections; outlook; guidance; forecasts; estimates; and other statements

regarding future or estimated financial and operational performance, gold production and sales, revenues

and cash flows, and capital costs (sustaining and non-sustaining) and operating costs, including projected

cash operating costs and AISC, and budgets on a consolidated and mine by mine basis; future or estimated

mine life, metal price assumptions, ore grades or sources, gold recovery rates, stripping ratios, throughput,

ore processing; statements regarding anticipated exploration, drilling, devel opment, construction,

permitting and other activities or achievements of B2 Gold; and including, without limitation: total

consolidated gold production of between 970,000 and 1,075,000 ounces in 2025; the Goose Mine achieving

commercial production in the next few weeks, and achieving strong production in Q4 2025; the Goose mill

being able to operate at 4,000 tpd throughput; 2025 gold production at the Goose Mine of 80,000 to

110,000 ounces; Q4 2025 gold production at the Goose Mi ne of 70,000 ounces; 2026 gold production at

the Goose Mine of approximately 250,000 ounces; 2027 gold production at the Goose Mine of

approximately 330,000 ounces; average annual gold pr oduction of approximat ely 300,000 ounces from

2026 to 2031 at the Goose Mine; receiving the Fekola Regional exploitation permit in Q3 2025; initial gold

production from Fekola Regional in early 2026; average annual gold production of approximately 180,000

ounces from 2026 through 2030 at Feko la Regional; the mine life of Fekola Regional extending well into

the 2030’s; 2025 gold production at the Fekola Complex of 515,000 to 550,000 ounces; Fekola

underground gold production of 30,000 to 40,000 ounces in 2025; Open pit gold production at Fekola and

Cardinal of 485,000 to 510,000 ou nces in 2025; 2025 gold production at the Otjikoto Mine of 185,000 to

205,000 ounces; pre-production capital cost of $105 million to develop the Antelope deposit; the Otjikoto

Mine producing approximately 110,000 ounces of gold per year over the life of the Antelope underground

mine; 2025 gold production at the Masbate Mine of 190,000 to 210,000 ounces. All statements in this news

release that address events or developments that we exp ect to occur in the future are forward-looking

statements. Forward-looking statements are statemen ts that are not historical facts and are generally,

although not always, identified by words such as " expect", "plan", "anticipate", "project", "target",

"potential", "schedule", "forecast", "budget", "estimate", "intend" or "believe" and similar expressions or

their negative connotations, or that events or cond itions "will", "would", "may", "could", "should" or

"might" occur. All such forward-looking statements are based on the opinions and estimates of management

as of the date such statements are made.

Forward-looking statements necessarily involve assumptions, risks and uncertainties, certain of which are

beyond B2Gold's control, including risks associated with or related to: the volatility of metal prices and

B2Gold's common shares; changes in tax laws; the dangers inherent in exploration, development and

mining activities; the uncertainty of reserve and resource estimates; not achieving production, cost or other

estimates; actual production, development plans and costs differing materially from the estimates in

B2Gold's feasibility and other studies; the ability to obtain and maintain any necessary permits, consents

or authorizations required for mining activities; environmental regulations or hazards and compliance with

complex regulations associated with mining activities; climate change and climate change regulations; the

ability to replace mineral reserves and identify acquisition opportunities; the unknown liabilities of

companies acquired by B2Gold; the ability to successfu lly integrate new acquisitions; fluctuations in

exchange rates; the availability of financing; financing and debt activities, including potential restrictions

imposed on B2Gold's operations as a result thereof and the ability to generate sufficient cash flows;

operations in foreign and developing countries and th e compliance with foreign laws, including those

associated with operations in Mali, Namibia, the Philippines, Canada, and Colombia and including risks

related to changes in foreign laws and changing policies related to mining and local ownership

requirements or resource nationaliza tion generally; remote operations an d the availability of adequate

infrastructure; fluctuations in pr ice and availability of energy and other inputs necessary for mining

operations; shortages or cost increases in necessary equipment, supplies and labour; regulatory, political

and country risks, including local instability or acts of terrorism and the effects thereof; the reliance upon

contractors, third parties and joint venture partners; th e lack of sole decision-making authority related to

Filminera Resources Corporation, which owns the Mas bate Project; challenges to title or surface rights;

the dependence on key personnel and the ability to a ttract and retain skilled personnel; the risk of an

uninsurable or uninsured loss; adverse climate and weather conditions; litigation risk; competition with

other mining companies; community support for B2Gold's operations, including risks related to strikes and

the halting of such operations from time to time; con flicts with small scale miners; failures of information

systems or information security threats; the ability to maintain adequate internal controls over financial

reporting as required by law, including Section 40 4 of the Sarbanes-Oxley Act; compliance with anti-

corruption laws, and sanctions or other similar measures; social media and B2Gold's reputation; as well

as other factors identified and as described in more de tail under the heading "Risk Factors" in B2Gold's

most recent Annual Information Form, B2Gold's cu rrent Form 40-F Annual Report and B2Gold's other

filings with Canadian securities regulators and the U.S. Securities and Exchange Commission (the "SEC"),

which may be viewed at www.sedar.com and www.sec.gov, respectively (the "Websites"). The list is not

exhaustive of the factors that may affect B2Gold's forward-looking statements.

B2Gold's forward-looking statements are based on the applicable assumptions and factors management

considers reasonable as of the date hereof, based on the information available to management at such time.

These assumptions and factors include, but are not limited to, assumptions and factors related to B2Gold's

ability to carry on current and future operations, incl uding: development and exploration activities; the

timing, extent, duration and economic viability of su ch operations, including any mineral resources or

reserves identified thereby; th e accuracy and reliability of estimates, projections, forecasts, studies and

assessments; B2Gold's ability to meet or achieve estimates, projections and forecasts; the availability and

cost of inputs; the price and market for outputs, in cluding gold; foreign exchange rates; taxation levels;

the timely receipt of necessary approvals or permits; the ability to meet current and future obligations; the

ability to obtain timely financing on reasonable t erms when required; the current and future social,

economic and political conditions; and other assumptions and factors generally associated with the mining

industry.

B2Gold's forward-looking statements are based on the opinions and estimates of management and reflect

their current expectations regarding future events and operating performance and speak only as of the date

hereof. B2Gold does not assume any obligation to update forward-look ing statements if circumstances or

management's beliefs, expectations or opinions should change other than as required by applicable law.

There can be no assurance that forward-looking statem ents will prove to be accurate, and actual results,

performance or achievements could differ materially from those expressed in, or implied by, these forward-

looking statements. Accordingly, no assurance can be given that any events an ticipated by the forward-

looking statements will transpire or occur, or if any of them do, what benefits or liabilities B2Gold will

derive therefrom. For the reasons set forth above, undue reliance should not be placed on forward-looking

statements.