6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of March 2026

Commission File Number 001- 43170

Highlander Silver Corporation

(Translation of registrant’s name into English)

Suite 555, 999 Canada Place

Vancouver, British Columbia, Canada V6C 3E1

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40F:

Form 20-F ☐        Form 40-F ☒

The following documents are being submitted herewith:

1

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

2

Exhibit 99.1

FORM 51-102F3 - MATERIAL CHANGE REPORT

Highlander Silver Corp. (“Highlander” or the “Company”)

2500 – 100 King Street W,

Toronto, ON M5X 1A9

March 6, 2026.

The Company’s news releases dated March 6, 2026, were disseminated through the facilities of Access Newswire and filed on SEDAR+.

Highlander Silver Corp. announced that it has received approval to list its common shares on the NYSE American LLC with trading expected to commence on Wednesday, March 11, 2026 under the symbol “HSLV”. The Company will remain listed on the Toronto Stock Exchange under the same symbol.

Highlander Silver Corp. announced that it has received approval to list its common shares on the NYSE American LLC with trading expected to commence on Wednesday, March 11, 2026 under the symbol “HSLV”. The Company will remain listed on the Toronto Stock Exchange under the same symbol.

Forward-looking statements

Certain information contained in this news release constitutes “forward-looking information” under Canadian securities legislation. This includes, but is not limited to, the listing of Highlander’s common shares on the NYSE American LLC on Wednesday, March 11, 2026. Such forward looking information or statements can be identified by the use of words such as “ramp up”, “attempting”, “intends”, “believes”, “plans”, “suggests”, “targets” or “prospects” or variations (including negative variations) of such words and phrases, or state that certain actions, events or results “will” be taken, occur, or be achieved. Forward-looking information involves known and unknown risks, uncertainties, and other factors which may cause the actual results, performance, or achievements of the Company and/or its subsidiaries to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking information. Such factors include, among others, general business, economic, competitive, political and social uncertainties, the actual results of current exploration activities, changes in project parameters as plans continue to be refined, future prices of precious and base metals, accident, labour disputes and other risks of the mining industry, and delays in obtaining governmental or stock exchange approvals or financing. Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that could cause actions, events or results to differ from those anticipated, estimated or intended. Forward-looking information contained herein are made as of the date of this news release. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. The Company undertakes no obligation to update forward-looking information if circumstances or management’s estimates or opinions should change, except as required by applicable securities laws. Accordingly, the reader is cautioned not to place undue reliance on forward-looking information.

Not applicable.

Not applicable.

Tom Ladner, General Counsel, (604) 638-1470

March 16, 2026