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SIEN.V ·

Sienna Resources Inc.: Corporate Update

Corporate Updates

Sienna Resources Inc.: Corporate Update

Vancouver, British Columbia--(Newsfile Corp. - May 9, 2025) - Sienna Resources Inc.

(TSXV: SIE)

(

OTC Pink: SNNAF

)

(FSE: A1XCQ0)

, (the "

Company

" or "

Sienna

") announces that, further to the

Company's news release dated April 29, 2025, the TSX Venture Exchange (the "

Exchange

") has

approved the consolidation of the Company's issued and outstanding common shares (the "

Shares

") on

the basis of one new Share (a "

Post-consolidated Share

") for every ten currently outstanding Shares

(the "

Consolidation

"). The Consolidation will be effective at the opening of the market on May 13, 2025.

Pursuant to the provisions of the

Business Corporations Act

(BC) and the articles of the Company, the

Consolidation was approved by way of resolution passed by the board of directors of the Company.

Effective May 13, 2025, the Shares of the Company will commence trading under the new trading

symbol "SIEN" on the Exchange. The Company's name will remain unchanged following the

Consolidation. The new CUSIP number will be 82621E205 and the new ISIN will be CA82621E2050 for

the Post-consolidated Shares. The Company currently has 202,668,871 common shares issued and

outstanding, and after the Consolidation is effective there will be approximately 20,266,887 common

shares issued and outstanding.

No fractional Post-consolidated Shares will be issued as a result of the Consolidation.

As required under

the Business Corporations Act (BC), any fractional Shares remaining after the Consolidation that are

less than one half of a Share will be cancelled and any fractional Shares that are at least one half of a

Share will be rounded up to one whole Share. Registered shareholders of record as of the effective date

who hold physical share certificates will receive a letter of transmittal from the Company's transfer agent,

Computershare Investor Services Inc., with instructions on how to exchange for new share certificates

representing Post-consolidated Shares. Beneficial shareholders who hold their shares through a broker

or other intermediary and do not have shares registered in their own names will not be required to

complete a letter of transmittal.

The exercise price and number of Shares of the Company, issuable upon the exercise of outstanding

options and warrants and conversion of outstanding convertible debentures, will be proportionally

adjusted upon the implementation of the Consolidation in accordance with the terms thereof.

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.

Contact Information

Tel: 1.604.646.6900

Fax: 1.604.689.1733

www.siennaresources.com

[email protected]

"Jason Gigliotti"

President, Director

Sienna Resources Inc.

Forward Looking Statements

This news release contains forward-looking information which is subject to a variety of risks and

uncertainties and other factors that could cause actual events or results to differ from those projected in

the forward-looking statements. Forward looking statements in this press release include that the

Company intends to consolidate its share capital. These forward-looking statements are subject to a

variety of risks and uncertainties and other factors that could cause actual events or results to differ

materially from those projected in the forward-looking information. Risks that could change or prevent

these statements from coming to fruition include that the Company may not obtain approval for the

Consolidation from the Exchange. The forward-looking information contained herein is given as of the

date hereof and the Company assumes no responsibility to update or revise such information to reflect

new events or circumstances, except as required by law.

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

https://www.newsfilecorp.com/release/251504