Solaris Resources Inc. — Board/Management Information 2021

Sep 9, 2021

FORM 51-102F3 - MATERIAL CHANGE REPORT

1. NAME AND ADDRESS OF COMPANY

Solaris Resources Inc. (“ Solaris ” or the “ Company ”) Suite 555 – 999 Canada Place

Vancouver, BC V6C 3E1

2. DATE OF MATERIAL CHANGE

August 30, 2021

3. NEWS RELEASE

News release dated August 30, 2021 was disseminated through the facilities of Newswire and filed on SEDAR.

4. SUMMARY OF MATERIAL CHANGE

Solaris announced the appointment of Ms. Sunny Lowe as Chief Financial Officer, effective October 1, 2021.

5. FULL DESCRIPTION OF MATERIAL CHANGE

Solaris announced the appointment of Ms. Sunny Lowe as Chief Financial Officer, effective October 1, 2021.

Ms. Lowe brings over 20 years of capital markets, finance, and international accounting, tax and risk management experience. In her most recent role with an Ecuador-focused exploration and development company, Ms. Lowe went beyond the traditional duties of her role as Chief Financial Officer to become a driving force in the completion of a feasibility study, engagement with Ecuadorian government to advance project permitting, and negotiation of an Investor Protection Agreement and Exploitation Agreement, that contributed to the company’s successful acquisition by an intermediate producer.

Prior to this, Ms. Lowe was Vice President, Finance for a senior precious metal producer for two years and Vice President, Internal Audit & Enterprise Risk Management for almost four years. Ms. Lowe also spent eight years at a senior base metals producer where she held leadership roles of increasing responsibility across functions including Enterprise Risk Management, Global Taxation and Compliance, and Business Systems and Controls.

Ms. Lowe is a Chartered Professional Accountant and holds an MBA from the Schulich School of Business at York University. She currently sits on the Board of Directors of EMX Royalty Corporation.

6. RELIANCE ON SUBSECTION 7.1(2) OF NATIONAL INSTRUMENT 51-102

Not applicable.

7. OMITTED INFORMATION

Not applicable.

8. EXECUTIVE OFFICERS

Tom Ladner, VP Legal, (604) 638-1470

9. DATE OF REPORT

September 8, 2021