UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, 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 July 2025
Commission File Number 001-42015
Solaris Resources Inc.
(Translation of registrant’s name into English)
Neuhofstrasse 5A Baar
Switzerland 6340
(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:
| Exhibit | Description | |
| 99.1 | Notice of Change of Auditor | |
| 99.2 | KPMG Notice Response Letter to Securities Commissions | |
| 99.3 | BDO Notice Response Letter to Securities Commissions |
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.
| Solaris Resources Inc. | ||
| (Registrant) | ||
| Date: July 29, 2025 | By: | /s/ Richard Hughes |
| Name: | Richard Hughes | |
| Title: | Chief Financial Officer and Secretary | |
2
Exhibit 99.1
Solaris Resources Inc.
(the “Company”)
NOTICE OF CHANGE OF AUDITOR
(National Instrument 51-102 – Continuous Disclosure Obligations)
| TO: |
British Columbia Securities Commission, as principal regulator Alberta Securities Commission Financial and Consumer Affairs Authority of Saskatchewan The Manitoba Securities Commission Ontario Securities Commission Autorité des marchés financiers (Québec) Financial and Consumer Services Commission (New Brunswick) Nova Scotia Securities Commission Financial and Consumer Services Division (Prince Edward Island) Office of the Superintendent of Securities Newfoundland and Labrador Office of the Yukon Superintendent of Securities Northwest Territories Office of the Superintendent of Securities Office of the Superintendent of Securities Nunavut |
| AND TO: | KPMG LLP, Chartered Professional Accountants (“KPMG”) BDO Canada LLP (“BDO”) |
| RE: | Notice Regarding Change of Auditor Pursuant to Section 4.11 of National Instrument 51-102 – Continuous Disclosure Obligations (“NI 51-102”) |
The Company hereby gives notice pursuant to section 4.11 of NI 51-102 as follows:
| 1. | Effective June 25, 2025 (the “Effective Date”), KPMG has resigned as auditor of the Company on its own initiative. |
| 2. | BDO has been appointed as auditor of the Company to fill the vacancy, to hold office commencing on the Effective Date until the close of the next annual meeting of shareholders of the Company. |
| 3. | The resignation of KPMG and appointment of BDO were considered and approved by the Company’s audit committee and board of directors. |
| 4. | There have been no modified opinions in the reports from KPMG on the Company’s financial statements for the period commencing at the beginning of the Company’s two most recently completed financial years and ending on the Effective Date. |
| 5. | In the opinion of the Company, as at the date hereof, there have been no reportable events (as defined in NI 51-102) in connection with the audits for the period commencing at the beginning of the Company’s two most recently completed financial years and ending on the Effective Date. |
DATED this 25th day of June, 2025.
| SOLARIS RESOURCES INC. | |||
| By: | (signed) “Richard Hughes” | ||
| Name: | Richard Hughes | ||
| Title: | Chief Financial Officer | ||
Solaris - Signature Page to Notice of Change of Auditor
Exhibit 99.2

KPMG LLP
777 Dunsmuir Street
Vancouver, BC V7Y 1K3
Canada
Tel 604-691-3000
Fax 604-691-3031
www.kpmg.ca
Alberta Securities Commission
Autorité des marchés financiers, Québec
British Columbia Securities Commission
Financial and Consumer Affairs Authority of Saskatchewan
Financial and Consumer Services Commission, New Brunswick
Nova Scotia Securities Commission
Financial and Consumer Services Division, Prince Edward Island
Office of the Superintendent of Securities Service Newfoundland & Labrador
Ontario Securities Commission
Office of the Superintendent of Securities Nunavut Securities
Manitoba Securities Commission
Office of the Superintendent of Securities, Northwest Territories
Office of the Yukon Superintendent of Securities
Dear Sir/Madam
Re: Notice of Change of Auditors of Solaris Resources Inc.
We have read the Notice of Solaris Resources Inc. dated June 25, 2025 and are in agreement with the statements contained in such Notice.
Yours very truly,

Chartered Professional Accountants
June 27, 2025
Vancouver, Canada
| KPMG
LLP, an Ontario limited liability partnership and member firm of the KPMG global organization of independent member firms affiliated with KPMG International Limited, a private English company limited by guarantee. KPMG Canada provides services to KPMG LLP. |
Exhibit 99.3
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Tel: (604) 688-5421 | BDO Canada LLP |
| Fax: (604) 688-5132 ww.bdo.ca |
Royal Centre, 1055 West Georgia Street Unit 1100, P.O. Box 11101 |
|
| Vancouver, British Columbia 6E 3P3 |
June 25, 2025
British Columbia Securities Commission, as principal regulator
Alberta Securities Commission
Financial and Consumer Affairs Authority of Saskatchewan
The Manitoba Securities Commission
Ontario Securities Commission
Autorité des marchés financiers (Québec)
Financial and Consumer Services Commission (New Brunswick)
Nova Scotia Securities Commission
Financial and Consumer Services Division (Prince Edward Island)
Office of the Superintendent of Securities Newfoundland and Labrador
Office of the Yukon Superintendent of Securities
Northwest Territories Office of the Superintendent of Securities
Office of the Superintendent of Securities Nunavut
Dear Sirs/Mesdames:
Re: Solaris Resources Inc. (the “Company”)
As required under section 4.11 of National Instrument 51-102, we have read the Company’s Change of Auditor Notice dated June 25, 2025 (“the Notice”).
We confirm our agreement with the information contained in the Notice pertaining to our firm.
Yours very truly,

Chartered Professional Accountants
BDO Canada LLP, a Canadian limited liability partnership, is a member of BDO International Limited, a UK company limited by guarantee, and forms part of the international BDO network of independent member firms.