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Frontier Lithium Highlights Recent Developments, Results FOR the Six

Corporate Updates

FRONTIER LITHIUM HIGHLIGHTS RECENT

DEVELOPMENTS, RESULTS FOR THE SIX

MONTHS ENDED SEPTEMBER 30, 2025 AND

AGM RESULTS

SUDBURY, ON

,

Nov. 27, 2025

/CNW/ - Frontier Lithium Inc. (TSXV: FL) (FRA: HL2) (OTCQX:

LITOF) ("Frontier" or the "Company") is pleased to announce its financial results for the six month

period ended

September 30, 2025

, and highlights from this interim period are set out below. The

financial statements and the related management's discussion and analysis for the period ended

September 30, 2025

have been filed on SEDAR+ and can be viewed under the Company's profile

at

www.sedarplus.ca

and on the Company's website at

www.frontierlithium.com

.

The Company continues to advance its PAK lithium project (the "

PAK Lithium Project

" or "

Project

")

and assess the viability of constructing and operating a fully-integrated lithium mine and chemicals

processing facility to deliver battery-grade lithium carbonate and lithium hydroxide for the burgeoning

lithium-ion battery market in North America.

Highlights for the Quarter Ended September 30, 2025, and Recent Developments

Financial

As at

September 30, 2025

, the Company had cash and cash equivalents of

$14.9 million

, supported

in part by the receipt of

$909,000

in reimbursement from government funding programs and an

additional

$634,000

in proceeds from the exercise of stock options. This liquidity positions the

Company to meet its current corporate and administrative requirements while advancing key

development and strategic objectives.

Exploration and Development

There has been no drilling on the PAK Lithium Project since

September 2024

. A full record of drilling

results from Phase I through Phase XIV (2013–2024) are available in the NI 43-101 Technical

Report filed on

July 9, 2025

by the Company.

The Company continues environmental baseline studies and related technical work required to

advance project permitting.

On

July 9, 2025

, the Company published the Mine and Mill Feasibility Study ("

Mine and

Mill FS

")

dated effective

May 28, 2025

. The Mine and Mill FS outlines a standalone operation producing

200,000 tonnes per year of 6% lithium oxide

("Li

O

") spodumene concentrate ("

SC6

"), reporting a

post-tax net present value of

$932 million

(8% discount rate) and a post-tax internal rate of return of

17.9%. The Mine and Mill FS incorporates updated mineral resources, a chemical grade lithium

concentrate (CG SC6) price assumption of

US$1,475

per tonne, and a USD/CAD exchange rate of

1.37.

The Mine and Mill FS considers a 31-year mine life supported by reserves at both the PAK and

Spark deposit, with grades of 1.96% Li

O and 1.44% Li

O respectively and demonstrates a

competitive C1 cost of

$602

per tonne of concentrate sold.

The Company has also initiated the Lithium Conversion Facility Feasibility Study ("

Lithium

Conversion Facility FS"),

led by Fluor Canada Ltd., with completion expected in the first half of

2027.

Permitting, Government and Regulatory

In

October 2025

, the Company was selected as the first participant in

Ontario's

One Project, One

Process ("

1P1P

") Framework Guidance initiative. The program is intended to streamline and

modernize provincial permitting, improving coordination among ministries and Indigenous partners

and enabling more efficient review timelines for advanced mineral projects.

Frontier is also pleased to recently report the findings of an independent socioeconomic impact

study completed by Ernst & Young LLP (EY) for the Company's proposed integrated mine, mill, and

conversion facility in

Northwestern Ontario

. The study underscores the transformative economic

contribution of the PAK Lithium Project to the region and to

Canada's

broader Critical Minerals

Strategy, highlighting its importance within the G7 Critical Minerals Production Alliance. EY's analysis

estimates that construction of the Company's mine, mill, and conversion facility would generate

approximately $1.5 billion in gross domestic product ("

GDP

"), $124 million in tax revenues,

and 2,163 full-time equivalent jobs over a three-year construction period. Over 30 years of

operations, the PAK Lithium Project is expected to contribute $183 million in GDP annually, $12

million in annual tax revenues, and support 950 full-time equivalent jobs. These results reinforce the

Project's potential to anchor a resilient, North American battery materials supply chain and

meaningfully support the global energy transition. For further details on the study, see the full EY

Socioeconomic Impact Study on Frontier Lithium's website at

https://www.frontierlithium.com/socioeconomic

.

Figure A: Frontier Lithium Economic Impact Placemat (CNW Group/Frontier Lithium Inc.)

Corporate

The Company also announces the departure of Mr.

David Ewing

, Vice President of Sustainability and

External Affairs of the Company, effective

December 12, 2025

.

Trevor Walker

, President and CEO,

thanks Mr. Ewing for his leadership and contributions in sustainability, Indigenous relations, and

regulatory engagement. A management transition plan has been established to ensure continuity of

Sustainability deliverables as the Project advances.

Infrastructure

The Company continues to collaborate with Federal and Provincial governments and Indigenous

communities on northern infrastructure planning, including all-season road and power access

required to support commercial operations and long-term project development.

Outlook

With a positive Mine and Mill FS and the Lithium Conversion Facility FS underway, the Company

continues to advance plans for integrated, scalable lithium production in

Ontario

. Work is ongoing to

secure necessary infrastructure, further engineering, and long-term agreements with Indigenous

rights holders to support the transition from exploration to development.

Annual General Meeting Results

The Company further announces the voting results from its annual general meeting of shareholders

of the Company (the "

Meeting

"), which was held on

Thursday, November 27, 2025

, at the

Company's head office in

Sudbury, Ontario, Canada

. All meeting matters and resolutions put before

the shareholders of the Company, and as more fully described in the Company's Notice of Annual

General Meeting of Shareholders and Management Information Circular, dated

October 14, 2025

,

were approved by the requisite majority of votes cast at the Meeting.

About Frontier Lithium

Frontier Lithium Inc. is a pre-production mining company with an objective to become a strategic and

integrated supplier of premium spodumene concentrates as well as battery-grade lithium salts to the

growing electric vehicle, and energy storage markets in

North America

. The Company's PAK Lithium

Project maintains the largest land position and resource in a premium lithium mineral district located

in

Ontario's

Great Lakes region.

About the PAK Lithium Project

The PAK Lithium Project is a fully integrated critical minerals initiative in

Ontario

, developing a high-

grade, large scale lithium resource. Operated as a joint venture between Frontier (92.5%) and

Mitsubishi Corporation (7.5%), the project is advancing in parallel with a mine and mill, north of

Red

Lake, Ontario

and a downstream lithium conversion facility in

Thunder Bay, Ontario

, which are both

key to supporting a secure domestic lithium supply for the clean energy transition. A 2025 Mine and

Mill Feasibility Study (FS), prepared by DRA Global Limited and entitled National Instrument 43-101

Technical Report FS PAK Lithium Project, Mine and Mill, outlines a 31-year Project life with an after-

tax net present value of

$932 million

at an 8% discount rate and an after-tax internal rate of return of

17.9%.These results have been disclosed in the Company's press release dated

May 28, 2025

, and

the accompanying technical report was filed on SEDAR+ (

www.sedarplus.ca

) on

July 9, 2025

.

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain statements that may be deemed "forward-looking statements".

All statements in this release, other than statements of historical fact constitute forward-looking

statements. Forward looking statements contained in this news release may include, but are not

limited to, the EY study estimates including but not limited to gross spending, GDP, wages, full time

equivalent employment and possible tax revenue, the PAK Lithium Project and its estimated

economics, and statements with respect to: capital requirements and private and/or public financing

initiatives and completion of these financings (if any), estimated mineral resources, estimated capital

costs to construct a mine and conversion facilities, estimated operating costs, estimated cash flows,

net present value, the Feasibility Study and statements that address future production, resource and

reserve potential, exploration drilling, exploitation activities and events or developments that the

Company expects, including but not limited to capital and operating costs, timelines, internal rates of

return, and project development milestones.

Forward-looking statements involve inherent risks and uncertainties. Risk factors that could cause

actual results to differ materially from those in forward looking statements include: market prices for

commodities, increases in capital or operating costs, construction risks, availability of infrastructure

including roads, regulatory and permitting risks, exploitation and exploration successes, continued

availability of capital and financing, financing costs, and general economic, market or business

conditions. Investors are cautioned that any such statements are not guarantees of future

performance and those actual results or developments may differ materially from those projected in

the forward-looking statements. For more information on the Company, please review the

Company's public filings available at www.sedarplus.ca.

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.

SOURCE

Frontier Lithium Inc.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/November2025/27/c4308.html

%SEDAR: 00008434E

For further information:

Company Contact Information: Bora Ugurgel, Senior Manager, Investor

Relations, 2614 Belisle Drive, Val Caron, Greater Sudbury, Ontario, P3N 1B3 CANADA, T. +001

705.897.7622, F. +001 705.897.7618

CO: Frontier Lithium Inc.

CNW 21:00e 27-NOV-25