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Lion One Appoints Eric Setchell Director of Operations, Provides Operations Update for Tuvatu

Management Changes

Lion One Appoints Eric Setchell Director of

Operations, Provides Operations Update for

Tuvatu

North Vancouver, British Columbia--(Newsfile Corp. - May 5, 2026) -

Lion One Metals Limited

(TSXV:

LIO) (OTCQX: LOMLF) ("Lion One" or the "Company

") is pleased to announce the appointment of

Eric Setchell as Director of Operations for Lion One. The Company also provides an operations update

for the Tuvatu Gold Mine in Fiji.

Appointment of Eric Setchell as Director of Operations

Mr Setchell is a highly accomplished mining executive with more than 40 years of experience across

underground and open pit mining operations, with a strong focus on gold mining. He has held senior

leadership roles including Mine General Manager, Operations Manager, and Mining Manager at several

prominent gold mining companies, including Centerra Gold, Dundee Precious Metals, Goldcorp, and

Kinross Gold.

Mr Setchell has extensive expertise in underground gold mining methods including longhole stoping,

shrinkage stoping, cut-and-fill, and mechanized mining. He has successfully led large-scale operations

both in Canada and internationally, including mine, mill, maintenance and technical operations. His

career highlights include overseeing the safe underground gold production of 700,000 ounces annually

at Red Lake Gold Mines, significantly increasing production rates and mill throughput at multiple

underground gold operations including the Musselwhite Mine and the Rice Lake Mine, and implementing

both conventional and mechanized mining techniques that improved productivity, reduced costs, and

enhanced safety performance.

He has a proven track record of increasing productivity and enhancing gold mining operations at

underperforming assets, including the re-opening of the suspended Bissett Gold Mine in Manitoba, and

the redevelopment and sale of the bankrupt Bateman Project in Ontario, which was successfully sold to

Evolution Mining for C$343 million.

Mr Setchell is widely recognized for his leadership in underground mining operations, operational

optimization, safety improvements, and building high-performing teams.

Mr Setchell was previously

the Director of Operations at Lion One Metals from January to December 2025, during which

time he oversaw a steady improvement in gold production and mine development rates at the

Tuvatu Gold Mine, culminating in the record gold production for the quarter ending in

December 2025.

Mr Setchell departed Lion One once Arete Capital took control of Tuvatu operations in

early January 2026.

In addition to Mr Setchell, several key members of his team, who also departed Lion One in early

January, will also be returning to Lion One.

Tony Young, Interim CEO of Lion One, commented: "We are very excited to have Eric Setchell and his

group rejoin the team at Lion One Metals. Eric is an expert in underground gold mining and has a long

history of increasing productivity at underground gold operations. He is also intimately familiar with the

Tuvatu Gold Mine, having already worked and led the operations at Tuvatu, and having successfully

delivered the record gold production at the project."

Operations Update

From July to December 2025, under the direction of Eric Setchell, Lion One achieved the strongest six-

month period in the company's history in terms of gold production and grade, with the first ever

consecutive quarters of over 4,000 oz of gold produced, and the first ever consecutive quarters with an

average head grade of over 5 g/t gold achieved.

For the quarter ending September 30, 2025, the company produced 4,086 oz of gold at an average

head grade of 5.1 g/t gold. For the quarter ending December 31, 2025, the company achieved record

quarterly gold production of 4,383 oz of gold, at an average head grade of 5.4 g/t gold. This included

monthly gold production of 1,519 oz in November, at an average head grade of 5.6 g/t gold, and monthly

gold production of 1,524 oz in December, at an average head grade of 5.8 g/t gold.

The average gold recovery from July to December 2025 was 82.1%. During this time, the bulk of the

construction of the Company's flotation circuit was completed. The addition of the flotation circuit is

anticipated to increase gold recoveries to over 90%.

Arete Capital Advisors (

"Arete" or "Arete Capital"

) assumed operational control of the Tuvatu Gold

Mine on January 10

th

, 2026, at which point Mr Setchell and his team departed the Company. Under the

management of Arete Capital, gold production, gold grades, and gold recoveries decreased

significantly quarter-over-quarter. For the quarter ending March 31, 2026, preliminary gold production at

Tuvatu was 2,726 oz, with an average head grade of 4.2 g/t gold, and an average gold recovery of

71.7%. This represents a 38% drop in production, a 22% drop in head grade and an 11% drop in

recovery compared to the previous quarter and resulted in the lowest quarterly gold production at Tuvatu

since March 31, 2024. Adverse weather conditions during the quarter contributed to approximately 8

days of lost production, and gold recoveries in March were impacted by significant carbon fouling as a

result of the flotation circuit commissioning combined with high rainfall.

With Mr Setchell now back leading operations at Tuvatu, Lion One anticipates an increase in

gold production, grades, and recoveries, similar to those achieved in the second half of 2025.

Figure 1 and Table 1 illustrate the monthly and quarterly gold production at Tuvatu, highlighting the

production achieved under Mr Setchell's leadership, compared to that while Arete Capital managed

operations at Tuvatu.

Figure 1. Tuvatu Monthly Gold Production, July 2025 to March 2026.

Gold production under the

direction of Eric Setchell is shown in green, with gold production under the direction of Arete Capital is

shown in red.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/2178/295945_269b702604f7b96e_001full.jpg

Table 1. Quarter-over-Quarter change in production.

Arete Capital assumed operational control in

January, 2026.

31-Dec-25

31-Mar-26

QoQ Change

Gold Production (oz)

4,383

2,726

-38%

Average Gold Head Grade (oz)

5.4

4.2

-22%

Average Gold Recovery (%)

80.5

71.7

-11%

Qualified Persons Statement

In accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-

101"), Mark Horan, P.Eng., Chief Mining Engineer for the Company, is the Qualified Person for the

Company and has reviewed and approved the technical and scientific content of this news release.

Lion One Laboratories / QAQC

Lion One adheres to rigorous QAQC procedures above and beyond basic regulatory guidelines in

conducting its drilling, sampling, testing, and analyses. The Company operates its own geochemical

assay laboratory and its own fleet of diamond drill rigs using PQ, HQ and NQ sized drill rods.

Diamond drill core samples are logged by Lion One personnel on site. Exploration diamond drill core is

split by Lion One personnel on site, with half core samples sent for analysis and the other half core

remaining on site. Grade control diamond drill core is whole core assayed. Core samples are delivered

to the Lion One Laboratory for preparation and analysis. All samples are pulverized at the Lion One lab

to 85% passing through 75 microns and gold analysis is carried out using fire assay with an AA finish.

Samples that return grades greater than 10.00 g/t Au are re-analyzed by gravimetric method, which is

considered more accurate for very high-grade samples.

Duplicates of 5% of samples with grades above 0.5 g/t Au are delivered to ALS Global Laboratories in

Australia for check assay determinations using the same methods (Au-AA26 and Au-GRA22 where

applicable). ALS also analyses 33 pathfinder elements by HF-HNO3-HClO4 acid digestion, HCl leach

and ICP-AES (method ME-ICP61). The Lion One lab can test a range of up to 71 elements through

Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) but currently focuses on a suite

of 26 important pathfinder elements with an aqua regia digest and ICP-OES finish.

About Lion One Metals Limited

Lion One Metals is an emerging Canadian gold producer headquartered in North Vancouver BC, with

new operations established in late 2023 at its 100% owned Tuvatu Alkaline Gold Project in Fiji. The

Tuvatu project comprises the high-grade Tuvatu Alkaline Gold Deposit, the Underground Gold Mine, the

Pilot Plant, and the Assay Lab. The Company also has an extensive exploration license covering the

entire Navilawa Caldera, which is host to multiple mineralized zones and highly prospective exploration

targets.

On behalf of the Board of Directors,

Todd Romaine, Director

Contact Information

Email:

[email protected]

Phone: 1-855-805-1250 (toll free North America)

Website:

www.liononemetals.com

Neither the TSX-V nor its Regulation Service Provider accepts responsibility or the adequacy or

accuracy of this release

This press release may contain statements that may be deemed to be "forward-looking statements"

within the meaning of applicable Canadian securities legislation. All statements, other than

statements of historical fact, included herein are forward-looking information. Generally, forward-

looking information may be identified by the use of forward-looking terminology such as "plans",

"expects" or "does not expect", "proposed", "is expected", "budget", "scheduled", "estimates",

"forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words

and phrases, or by the use of words or phrases which state that certain actions, events or results may,

could, would, or might occur or be achieved. This forward-looking information reflects Lion One Metals

Limited's current beliefs and is based on information currently available to Lion One Metals Limited

and on assumptions Lion One Metals Limited believes are reasonable. These assumptions include,

but are not limited to, the actual results of exploration projects being equivalent to or better than

estimated results in technical reports, assessment reports, and other geological reports or prior

exploration results. Forward-looking information is subject to known and unknown risks, uncertainties

and other factors that may cause the actual results, level of activity, performance, or achievements of

Lion One Metals Limited or its subsidiaries to be materially different from those expressed or implied

by such forward-looking information. Such risks and other factors may include, but are not limited to:

the stage development of Lion One Metals Limited, general business, economic, competitive,

political and social uncertainties; the actual results of current research and development or

operational activities; competition; uncertainty as to patent applications and intellectual property

rights; product liability and lack of insurance; delay or failure to receive board or regulatory approvals;

changes in legislation, including environmental legislation, affecting mining, timing and availability of

external financing on acceptable terms; not realizing on the potential benefits of technology;

conclusions of economic evaluations; and lack of qualified, skilled labor or loss of key individuals.

Although Lion One Metals Limited has attempted to identify important factors that could cause actual

results to differ materially from those contained in forward-looking information, there may be other

factors that cause results not to be as anticipated, estimated, or intended. Accordingly, readers should

not place undue reliance on forward-looking information. Lion One Metals Limited does not undertake

to update any forward-looking information, except in accordance with applicable securities laws.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/295945