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Arianne Phosphate Enhances the Roles of TWO Key Management Positions DAN: TSX-V ( Canada ) JE9N: Fse ( Germany ) Drrsf: OTCQX ( USA )

Management Changes

ARIANNE PHOSPHATE ENHANCES THE

ROLES OF TWO KEY MANAGEMENT

POSITIONS

DAN: TSX-V (

Canada

)

JE9N: FSE (

Germany

)

DRRSF: OTCQX (

USA

)

SAGUENAY, QC

,

Sept. 11, 2025

/CNW/ -

Arianne Phosphate (the "Company" or "Arianne")

(TSXV: DAN) (OTCQX: DRRSF) (FRANKFURT: JE9N), a development-stage phosphate mining

company, advancing the Lac à Paul project in

Quebec's

Saguenay-Lac-Saint-Jean region, is pleased

to announce that the Company has appointed

Marco Gagnon

as Executive Chairman and will also be

creating the management position of "Head of Strategic & Business Initiatives" with this role being

filled by

Brian Ostroff

, moving over from his current role of President.

Marco Gagnon

has served as Arianne's Director and Chairman of the Board since 2011 and 2023

respectively. Mr. Gagnon's move to Executive Chairman will increase his involvement in key activities

with the Company's management team which is relatively small and is currently being pushed

towards capacity as it moves its Lac à Paul project towards development. Mr. Gagnon, a 30-year

senior mining professional with large and small mining companies, founded Adventure Gold in 2007

(subsequently sold to Probe Gold in 2016) and currently serves as a Technical Advisor to Probe

Gold Inc. "I am excited to take on my new responsibilities and very pleased to work with the team in

place in advancing Arianne's Lac à Paul phosphate project. The release of our prefeasibility report in

June 2024

regarding a downstream purified phosphoric acid plant has generated a significant

increase in discussions regarding our project. Today it is all about getting the project into

development. We have been very active in our conversations with potential partners to help us do so

and Arianne's repositioning of the Company's management is being done to focus on this endeavour.

Being successful will unlock tremendous value to our stakeholders and shareholders and provide the

West with this much needed commodity." said Mr. Gagnon.

In addition to Mr. Gagnon's move to Executive Chairman, Arianne has created the position of Head

of Strategic and Business Initiatives to meet the Company's increasing discussions centered around

its partnership and financing activities and to address a significant uptick in inbound inquiries. Given

Mr. Ostroff's background in mergers & acquisitions (partner at a global M&A firm) and capital

markets finance (partner at a resources-focused hedge fund), as well as his experience in senior

management at Arianne, the Board has appointed him to this new role. Operationally, this will now

allow Mr. Ostroff to focus almost exclusively on this new role. "Aside from our previously announced

deal with a large mining company in

October 2024

, the projected tightness in the purified phosphoric

acid market has opened significant opportunities as both industry and financial players look to secure

the product they need and the economic benefit that comes with it. Added to this is the growing

awareness that the West is looking to onshore its needs for critical mineral supply and fabrication.

Arianne has the world's largest greenfield phosphate deposit, and our igneous phosphate allows for

the easy production of a cleaner PPA. The feasibility stage mining project is large, ambitious and

relatively unique being permitted and shovel ready. The addition of like-minded partners will go

towards getting the project developed and unlocking the substantial economic and strategic benefits

that come with it. In my new role, I will be able to fully dedicate my efforts towards making this a

reality." said Mr. Ostroff.

Phosphate historically has been understood as an agricultural commodity necessary for fertilizers.

Currently

North America

, along with most other jurisdictions are reliant on phosphate imports

sourced from the

Middle East

and

North Africa

. Both

Russia

and

China

are also active in phosphate

production. There is no substitute for phosphate and without its use, farm yields would be unable to

support food requirements. Demand for phosphate has grown at roughly 2% annually.

Aside from its use in agriculture, phosphate demand, specifically phosphoric acid, has been

increasing drastically because of the widespread adoption of the lithium-iron-phosphate ("LFP")

battery. The LFP battery has become the predominant battery in electric vehicles as well as energy

storage systems, with demand for these batteries set to grow significantly in the coming years. LFP

batteries require purified phosphoric acid ("PPA"), a product that ideally requires a high-quality

phosphate concentrate as its feedstock. Demand for battery-grade PPA is expected to double over

the next 5-10 years.

China

currently produces over 90% of all LFPs adding an additional challenge

as the West is adopting these batteries at an increasing rate while looking to diversify its supply

chains away from

China

. Recognizing these dynamics, both

Quebec

and

Canada

joined the EU in

adding phosphate to their critical mineral lists.

Arianne Phosphate owns the Lac à Paul phosphate project, the world's largest greenfield phosphate

deposit. Situated in

Quebec, Canada

, the project benefits from being in a geopolitically safe

jurisdiction as the West looks to secure its own supply of this critical mineral. Arianne's deposit being

igneous, it allows to produce a high purity phosphate concentrate which is easily transformed into

PPA. The Company has spent over

$100 million

over the last 15 years advancing the project through

exploration, feasibility studies, metallurgical testing and ultimately permitting. Today, Lac à Paul

stands as the most advanced phosphate project in the West. The Company also published a

prefeasibility study showing the immense benefits of adding a downstream segment to its business.

About Arianne Phosphate:

Arianne Phosphate ("Arianne Phosphate Inc.") (

www.arianne-inc.com

) is developing the Lac à Paul

phosphate deposits located approximately 200 km north of the Saguenay/Lac St. Jean area

of Quebec,

Canada

. These deposits will produce a high-quality igneous apatite concentrate grading

39% P

2

O

5

with little or no contaminants (Feasibility Study released in 2013). The Company has

213,714,811 shares outstanding.

Qualified

Person

Raphael Gaudreault

, eng., Qualified Person by Regulation 43-101, has approved the technical

disclosure in this release. Mr. Gaudreault is also the Company's Chief Operating Officer.

Neither 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.

Follow Arianne on:

Facebook:

https://www.facebook.com/ariannephosphate

Twitter:

http://twitter.com/arianne_dan

YouTube:

http://www.youtube.com/user/ArianneResources

Flickr:

http://www.flickr.com/photos/arianneresources

Resource Investing News:

http://resourceinvestingnews.com/?s=Arianne

Cautionary Statements Regarding Forward Looking Information

This news release contains "forward-looking statements" and "forward-looking information"

within the meaning of applicable securities regulations in

Canada

and

the United States

(collectively, "forward-looking information"). Forward-looking information includes, but is

not limited to, anticipated quality and production of the apatite concentrate at the Lac à Paul

project. Often, but not always, forward-looking information can be identified by the use of

words such as "plans", "expects, "is expected", "budget", "scheduled", "estimates",

forecasts", "intends", "anticipates", or "believes", or the negatives thereof or variations of

such words and phrases or statements that certain actions, events or results "may", "could",

"would", "might", or "will" be taken, occur or be achieved. Forward-looking information is

subject to be 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 information,

including but not limited to: volatile stock price; risks related to changes in commodity

prices; sources and cost of power facilities; the estimation of initial and sustaining capital

requirements; the estimation of labor and operating costs; the general global markets and

economic conditions; the risk associated with exploration, development and operations of

mineral deposits; the estimation of mineral reserves and resources; the risks associated with

uninsurable risks arising during the course of exploration, development and production;

risks associated with currency fluctuations; environmental risks; competition faced in

securing experienced personnel; access to adequate infrastructure to support mining,

processing, development and exploration activities; the risks associated with changes in the

mining regulatory regime governing the Company; completion of the environmental

assessment process; risks related to regulatory and permitting delays; risks related to

potential conflicts of interest; the reliance on key personnel; financing, capitalization and

liquidity risks including the risk that the financing necessary to fund continued exploration

and development activities at Lac à Paul project may not be available on satisfactory terms,

or at all; the risk of potential dilution through the issue of common shares; the risk of

litigation. Forward-looking information is based on assumptions management believes to be

reasonable at the time such statements are made, including but not limited to, continued

exploration activities, no material adverse change in commodity prices, exploration and

development plans proceeding in accordance with plans and such plans achieving their

stated expected outcomes, receipt of required regulatory approval, and such other

assumptions and factors as set out herein. Although the Company has attempted to identify

important factors that could cause actual results to differ materially from those contained in

the 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 forward-looking

information will prove to be accurate, as actual results and future events could differ

materially from those anticipated in such forward-looking information. Accordingly, readers

should not place undue reliance on forward-looking information. Forward-looking

information is made as of the date of this press release, and the Company does not

undertake to update such forward-looking information except in accordance with applicable

securities laws.

SOURCE

Arianne Phosphate Inc.

View original content:

http://www.newswire.ca/en/releases/archive/September2025/11/c1541.html

%SEDAR: 00003556E

For further information:

Contact Information: Technical: Raphael Gaudreault, Tel. : 418-590-1318,

[email protected]; Info: Brian Ostroff, Tel. : 514-908-4202,

[email protected]

CO: Arianne Phosphate Inc.

CNW 07:00e 11-SEP-25