Communities Finalise Life Plans Alongside Renewed Shuar Agreements as Warintza Continues to Advance de-Risking Activities Highlights of the Press Release:
COMMUNITIES FINALISE LIFE PLANS ALONGSIDE RENEWED SHUAR AGREEMENTS AS
WARINTZA CONTINUES TO ADVANCE DE-RISKING ACTIVITIES
HIGHLIGHTS OF THE PRESS RELEASE:
• Warints and Yawi communities finalise their respective Life Plans , which recognise mining as a n important
resource supporting their long-term development objectives, alongside renewal of the Company’s cooperation
agreements with FISCH and PSHA
• Continued permitting progress following technical approval of the EIA, with multiple regulatory processes
advancing in parallel
• Strong progress across the technical studies, advancing the next phase of development at Warintza, supported
by a strong Balance Sheet
Quito, Ecuador –– September 10, 2026 –– Solaris Resources Inc. (“Solaris” or the “Company”) (TSX: SLS; NYSE: SLSR) is
pleased to provide an update on the continued advancement of its flagship Warintza Project (“Warintza” or the “Project”)
in southeastern Ecuador, where significant progress has been achieved across the Company's social, permitting, technical
and operational workstreams.
The Company recently renewed its cooperation agreements with both the Interprovincial Federation of Shuar Centers
(“FISCH”) and the Pueblo Shuar Arutam Organization (“PSHA”), while the Warints and Yawi communities have finalised
their respective Life Plans, which remain subject to the customary community approval. Permitting initiatives continue to
advance following technical approval of the Environmental Impact Assessment (“EIA”) , alongside ongoing drilling,
technical studies and Project de-risking activities supporting the next phase of Warintza’s development.
Stakeholder Engagement and Permitting Continue to Advance
The Company has renewed its agreement with FISCH in addition to their agreement with PSHA , both reinforcing its
longstanding relationship and continued constructive engagement with th ese important Indigenous representative
organizations. The renewed agreement s reflect the Company’s ongoing commitment to transparent dialogue and long -
term relationship building with Indigenous stakeholders as the Project advances.
This broader stakeholder engagement is complemented by continued engagement with the Warints and Yawi
communities, which have each finalised their respective Community Life Plans, as reported by the communities.
Community Life Plans are community-led, long-term development frameworks that identify each community’s priorities
and aspirations and provide a roadmap for future decision -making. Notably, both communities recognize mining as an
important resource in support of their long-term development objectives and demonstrate the communities are actively
considering the Project advancement within their own long-term development vision.
Together, the renewed FISCH and PSHA agreements and the completion of the Warints and Yawi Life Plans demonstrate
continued constructive engagement at both the representative and local community levels. They also provide an
important foundation for ongoing stakeholder engagement and valuable input to t he Government -led consultation
process which is required for the development of the Warintza Project . This process continues to advance under the
direction of the Government authorities, in accordance with the applicable legal and regulatory framework.
In parallel, the Company continues to advance the remaining permitting workstreams through ongoing technical
engagement with the relevant government agencies. Building on the technical approval of the EIA earlier this year, the
Company continues to progress the regulatory authorizations required for Project development, including water permits,
mining concession administrative processes, infrastructure-related clearances and other statutory requirements.
The Company remains encouraged by the progress across the stakeholder engagement and permitting workstreams, with
continued constructive stakeholder engagement and multiple regulatory processes advancing in parallel.
Warintza Technical Studies and Project Development Continue to Advance
The Company continues to make progress across the technical studies supporting the next phase of development at
Warintza, with multiple workstreams advancing in parallel. This follows the publication of the Pre-Feasibility Study (the
“PFS”) in November 2025 which confirmed Warintza as one of the largest undeveloped copper projects globally,
demonstrating robust economics, first-quartile operating costs, a low strip ratio, long mine life and significant leverage to
the growing structural copper supply deficit.
Technical drilling remains underway and is expected to be completed by the end of the fourth quarter of 2026. In parallel,
geotechnical and hydrogeological field investigations supporting mine infrastructure design continue to advance, with
laboratory testing progressing across each technical discipline.
The Company also continues to advance several other project de-risking initiatives including road maintenance, supporting
reliable year-round access and operational continuity.
Strong Balance Sheet Supports Continued Advancement
As of June 30, 2026, the Company had cash and cash equivalents of US$54 million and expects to receive the third and
final US$50 million tranche under the Royal Gold funding package in the fourth quarter, subject to completion of the
required security filings.
Workstreams Continue to Advance Toward Key Objectives
The Company remains focused on advancing the social, permitting, technical and operational workstreams in parallel. As
is typical for large -scale development projects, the timing and sequencing of these milestones remain interdependent,
particularly the consultation and regulatory processes administered by the relevant government authorities. While these
workstreams continue to progress in line with the Company's development plans and schedules, the timing of
government-led consultation and regulatory processes may influence the sequencing of project milestones, alongside the
finalisation of technical studies.
The continued advancement of these parallel workstreams is progressively de-risking the Warintza Project and positioning
the Company for the next phase of development. The Company remains focused on disciplined execution as it advances
one of the world's most significant undeveloped copper projects.
Qualified Person
The scientific and technical content of this press release has been reviewed and approved by Jorge Fierro, M.Sc., DIC, PG,
an independent consultant who is a “Qualified Person” as defined in NI 43 -101. Jorge Fierro is a Registered Professional
Geologist through the SME (registered member #4279075).
On behalf of the Board of Solaris Resources Inc.
“Matthew Rowlinson”
President & CEO, Director
For Further Information
Patrick Chambers, VP Business Development & Investor Relations
Email: [email protected]
About Solaris Resources Inc.
Solaris Resources is a copper -gold exploration and development company advancing a portfolio of high -quality assets
across the Americas. Its flagship asset is the 100%-owned Warintza copper porphyry Project in southeast Ecuador. Solaris
is committed to responsible mining practices that prioritize environmental stewardship, shared value creation, and long-
term benefits for local communities and stakeholders.
Cautionary Notes and Forward-looking Statements
This document contains certain forward -looking information and forward -looking statements within the meaning of applicable
securities legislation (collectively “forward -looking statements”). The use of the words “will” and “expected” and similar expression s
are intended to identify forward-looking statements. These statements include statements regarding the Company’s future exploration
and development plans, growth and value; the timing, completion and potential results of such exploration and development plans;
planned activities and potential future opportunities at Warintza, including, but not limited to, plans for follow -up drilling and other
work; all prospective information in the PFS; the timing and ability to obtain the requisite permits and regulat ory approvals, if at all;
the expected benefits of the EIA technical approval; the timing and outcome of the Government -led consultation process and other
permitting processes; the ongoing ability to work cooperatively with stakeholders; and the use of and sufficiency of capital to fund the
Company’s planned activities. Although Solaris believes that the expectations reflected in such forward -looking statements and/or
information are reasonable, readers are cautioned that actual results may vary from the fo rward-looking statements. The Company
has based these forward -looking statements and information on the Company’s current expectations and assumptions about future
events including assumptions regarding the exploration and regional programmes. These statements also involve known and unknown
risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-
looking statements, including the risks, uncertainties and other factors identified in the Solaris Management’s Discussion and Analysis,
for the year ended December 31, 2025 available at www.sedarplus.ca. Furthermore, the forward -looking statements contained in this
news release are made as at the date of this news release and Solaris does not undertake any obligation to publicly update or revise
any of these forward-looking statements except as may be required by applicable securities laws.