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LBNK.V ·

LithiumBank Completes Bulk Brine Sampling at Boardwalk Lithium Project

Exploration Programs

LithiumBank Completes Bulk Brine Sampling

at Boardwalk Lithium Project

Calgary, Alberta--(Newsfile Corp. - April 13, 2026) -

LithiumBank Resources Corp. (TSXV:

LBNK

)

(OTCQX: LBNKF) (FSE: HT9)

("

LithiumBank

'' or the "

Company

") is pleased to announce it has

successfully collected 150 cubic metres ("

m

3

") of brine from its 100% owned Boardwalk Lithium Brine

Project ("

Boardwalk

") located in northwest Alberta, Canada (Figure 1). The brine was collected from

the Company's 100/10-06-069-21W5/02 ("

10-6

") well for multiple tests including: (1) Long cycle Direct

Lithium Extraction ("

DLE

") and polishing process optimization, (2) conversion to a battery-grade lithium

carbonate product, and (3) hydrogeological data gathering during the brine collection process.

The 150 m

3

bulk brine sample from the Company's 10-6 well (Figure 2) started March 21st, 2026, and

was completed April 8th, 2026. One litre brine samples taken throughout the sampling campaign have

been sent to several labs for assay analysis. Mr. Maurice Shevalier from Montrose Environmental Group

was on-site to ensure sampling was conducted using best practices and in compliance with National

Instrument 43-101 -

Standards of Disclosure for Mineral Projects

("

NI 43-101

"). The brine collection

operation ran without incident and was conducted by Tristar Resource Management Inc.

Furthermore, the Company intends to re-enter and drill through the Leduc formation in its newly acquired

past producing well 104/01-12-069-22W5/00 ("

1-12

"), as announced

March 10, 2026

. LithiumBank has

inserted a down hole pressure monitor into the 10-6 well to monitor pressure changes during future flow

testing in the 1-12 well. This pressure monitor will give further confidence in the hydrogeological model

and add to future production flow modelling.

As previously announced (

July 17, 2025

), to qualify for reimbursement of expenses from the Emissions

Reduction Alberta ("

ERA

"), LithiumBank must complete the following milestones:

1

.

Collect additional hydrogeological information to support an advanced reservoir model and

geological model for the Leduc formation reservoir at Boardwalk and collect a bulk brine sample to

support Milestone 2.

2

.

Conduct long cycle DLE testing and optimization, focusing on concentration and impurity removal

testing, and conversion to lithium carbonate; and,

3

.

Complete a Feasibility Study at Boardwalk that assesses a low Capex, modular approach to

lithium production.

Over the last five years, the Company has successfully consolidated all the strategic Brine Hosted

Mineral Licenses ("

BHML

") at Boardwalk and Park Place covering the Leduc formation (BHML areas

shown in Figure 1). The NI 43-101 resource estimates at Boardwalk and Park Place, as shown below in

Figure 1, are both reported as the highest-grade resource estimates in Alberta and together make

LithiumBank the largest known holder of lithium brine resources in North America (Figure 1). The two

projects are completely unrestricted by overlapping pore space for carbon sequestration

applications/permits allowing for a clearer path toward permitting of the first production of lithium from

brines in Alberta.

The Company's drilling and brine collection program has been modified from the original Milestone 1

program as described in the Company's news release dated

July 17, 2025

announcing the ERA funding.

The modified Milestone 1 has now been completed and allows for 50% of eligible expenditures up to

$1.6 million (reduced from $2.5 million). The difference in funding required for Milestone 1 will be

transferred to Milestone 3, the completion of a Feasibility Study / Front End Engineering Design, leaving

total ERA funding unchanged at $3.9 million.

The 10-6 well (Figure 2) is a vertical well. Brine sampling was collected between 2,648.66 - 2,2732.32

metres below surface. Industry standard Quality Control and Quality Assurance ("

QA/QC

") measures

were practiced during sample collection which included the following: one litre brine samples were

collected every hour to monitor salinity and identify when native brine was flowing. Eight (8), 1 litre brine

samples were collected at the wellhead, and four samples were collected post gas treatment. These

samples were sent to AGAT Laboratory in Calgary, AB and duplicate samples were sent to an umpire

lab along with a synthetic brine standard and a blank sample. Results of the analysis will be made

available as they are received.

Figure 1: Map of the Boardwalk and Park Place projects highlighting categories of NI 43-101

lithium brine resource estimates.

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

https://images.newsfilecorp.com/files/10140/292159_3b6b50b27448896c_001full.jpg

Notes

1: Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no guarantee that all or any part of the

mineral resource will ever be upgraded to a higher category. The estimate of mineral resources may be materially affected by geology, environment,

permitting, legal, title, taxation, socio-political, marketing, or other relevant issues.

2: The weights are reported in metric tonnes (1,000 kg or 2,204.6 lbs).

3: Tonnage numbers are rounded to the nearest 1,000 unit.

4: In a 'confined' aquifer (as reported herein), effective porosity is an appropriate parameter to use for the resource estimate.

5: The resource estimation was completed and reported using a cut-off of 50 mg/L Li.

6: To describe the resource in terms of industry standard, a conversion factor of 5.323 is used to convert elemental Li to Li2CO3, or Lithium

Carbonate Equivalent (LCE).

Figure 2. Field operations at the 10-6 well. Photo taken March 28

th

, 2026

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

https://images.newsfilecorp.com/files/10140/292159_3b6b50b27448896c_002full.jpg

Qualified Person

The scientific and technical information disclosed in this news release that relates to the exploration

sampling was reviewed and approved by Maurice Shevalier, M.Sc., P.Chem, who is a Qualified Person

(QP) for the purposes of National Instrument 43-101. Mr. Shevalier was on-site during sample collection.

Mr. Shevalier is a consultant from Montrose Environmental Group and is independent of LithiumBank.

Mr. Shevalier consents and approves of the inclusion of the exploration data in the form and context in

which it appears.

The information that forms the basis for the scientific and technical information disclosed in this news

release was prepared and approved by Kevin Piepgrass, P.Geo, who is a Qualified Person (QP) for the

purposes of National Instrument 43-101. Mr. Piepgrass is the Chief Operating Officer at LithiumBank

and is not independent. Mr. Piepgrass consents and approves of the inclusion of the data in the form and

context in which it appears.

About LithiumBank Resources Corp.

LithiumBank Resources Corp. (TSXV: LBNK) (OTCQX: LBNKF) is a publicly traded lithium company

that is focused on developing its two flagship projects, Boardwalk and Park Place, in Western Canada.

These projects host some of the largest lithium brine resources in North America (Figure 1). The

Company holds 1,240,140 acres of brown-field brine hosted mineral licenses across three districts in

Alberta and Saskatchewan. The Company has pilot tested multiple mature Direct Lithium Extraction

("DLE") technologies and has signed a Development Agreement for the Boardwalk project. This

agreement includes binding DLE licensing terms with Schlumberger ("

SLB

") to provide a cost-effective

and commercially viable end-to-end solution. The Company is now working toward establishing

commercial lithium production using a modular scale-up approach.

Contact:

Rob Shewchuk CEO & Director

[email protected]

(778) 987-9767

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined

in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or

accuracy of this release.

Cautionary Statement Regarding Forward-Looking Statements

This release includes certain statements and information that may constitute forward-looking

information within the meaning of applicable Canadian securities laws. All statements in this news

release, other than statements of historical facts, including statements regarding future estimates,

plans, objectives, timing, assumptions or expectations of future performance, including without

limitation, statements regarding the Company's plans to re-enter and drill the 1-12 well deeper

through the entire Leduc formation and the timing thereof; expectations regarding future flow testing in

the 1-12 well; the anticipated contribution of down hole pressure monitoring data to the Company's

hydrogeological model and future production flow modelling; the expected results of assay analysis of

brine samples sent to laboratories; the Company's plans to complete the ERA milestones; and the

transfer of the balance of Milestone 1 funding to Milestone 3

;

expectations regarding a clearer path

toward permitting of the first production of lithium from brines in Alberta; the Company's plans to

establish commercial lithium production using a modular scale-up approach; and the Development

Agreement with a Leading Energy Services and Technology Supplier providing a cost-effective and

commercially viable end-to-end DLE solution

,

are forward-looking statements and contain forward-

looking information. Generally, forward-looking statements and information can be identified by the

use of forward-looking terminology such as "intends" or "anticipates", or variations of such words and

phrases or statements that certain actions, events or results "may", "could", "should" or "would" or

occur.

Forward-looking statements are based on certain material assumptions and analysis made by the

Company and the opinions and estimates of management as of the date of this press release,

including that the Company will be able to re-enter and drill the 1-12 well through the Leduc formation

as planned; that the down hole pressure monitoring data from the 10-6 well will support and improve

the Company's hydrogeological model and future production flow modelling; that assay results from

brine samples will confirm lithium concentrations consistent with the Company's expectations; that the

Company will successfully complete the ERA milestones, that the Company will receive the expected

funding from the ERA on the terms and timeline anticipated; that there is a clearer path toward

permitting of the first production of lithium from brines in Alberta; that the Development Agreement

with a Leading Energy Services and Technology Supplier will result in a cost-effective and

commercially viable end-to-end DLE solution; and that the Company will be able to establish

commercial lithium production using a modular scale-up approach.

These forward-looking statements are subject to known and unknown risks, uncertainties and other

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

Company to be materially different from those expressed or implied by such forward-looking

statements or forward-looking information. Important risks that may cause actual results to vary,

include, without limitation, the risk that the Company will not be able to re-enter and drill the 1-12 well

through the Leduc formation as planned, or at all; that the down hole pressure monitoring data will not

support or improve the hydrogeological model or future production flow modelling as anticipated; that

assay results from brine samples may not confirm lithium concentrations consistent with the

Company's expectations; that the Company may not successfully complete the ERA milestones on

the anticipated timeline, or at all; that long-cycle DLE testing and optimisation, concentration and

impurity removal testing, and conversion to lithium carbonate may not achieve the results expected

by the Company; that the Feasibility Study / Front End Engineering Design may not be completed,

may not be completed on schedule, or may not produce favourable results; that the Company may

not receive the anticipated funding from the ERA, in whole or in part, or on the timeline expected; that

the permitting pathway for the first production of lithium from brines in Alberta may not materialise as

anticipated; that the Development Agreement with a Leading Energy Services and Technology

Supplier may not result in a cost-effective, commercially viable end-to-end DLE solution, or at all; that

the Company will not be able to permit the first production of lithium brines in Alberta; that North

America's demand for lithium does not continue to grow; the possibility that any future development

results will not be consistent with the Company's expectations;

risks

related

to

commodity

price

and

foreign

exchange

rate

fluctuations; the

cyclical nature

of

the

industry

in

which

the

Company

operates;

risks

related

to

global

financial

markets, including the trading price of the Company's shares and the

Company's ability to raise capital may also result in additional and unknown risks or liabilities to the

Company.

Although management of the Company has attempted to identify important factors that could cause

actual results to differ materially from those contained in forward-looking statements or forward-looking

information, there may be other factors that cause results not to be as anticipated, estimated or

intended. There can be no assurance that such statements will prove to be accurate, as actual results

and future events could differ materially from those anticipated in such statements. Accordingly,

readers should not place undue reliance on forward-looking statements and forward-looking

information. Readers are cautioned that reliance on such information may not be appropriate for other

purposes. The Company does not undertake to update any forward-looking statement, forward-looking

information or financial outlook that are incorporated by reference herein, except in accordance with

applicable securities laws.

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

https://www.newsfilecorp.com/release/292159