Skeena Gold & Silver Releases 2025 Sustainability Report Entitled ‘Where Voices Meet, Progress Follows’

Press Release

Vancouver, British Columbia (May 13, 2026) Skeena Resources Limited (TSX: SKE, NYSE: SKE) (“Skeena Gold & Silver”, “Skeena” or the “Company”) today released its 2025 Sustainability Report, capturing a year of historic achievements and unparalleled collaboration with Indigenous partners that has set the stage for sustainable growth and success. All figures reported in this news release are in Canadian dollars.

Randy Reichert, President & Chief Executive Officer of Skeena, commented, “2025 marked a transformative chapter for the Company made possible by the relentless work, dedication and collaborative spirit of our entire team. We achieved crucial milestones that strengthened our business, fortified our partnerships, progressed our sustainability commitments and propelled the Eskay Creek mine closer to production.”

The report, entitled Where Voices Meet, Progress Follows, details Skeena’s inclusive approach to sustainably developing the world-class Eskay Creek Gold-Silver mine in northwest B.C.  Skeena’s sustainability efforts focus on four interconnected pillars: Indigenous Partnerships; People; Planet; and Business. This year, we established Indigenous Partnerships as a distinct, foundational pillar, formalizing a model that has long defined how we work and how we define success.

2025 Sustainability Highlights:

• Negotiated an historic Impact Benefit Agreement with the Tahltan Central Government, paving the way for shared benefits in re-opening Eskay Creek, while setting new precedents for environmental protection and regulatory collaboration.
• Successfully completed an extensive environmental assessment for Eskay Creek, resulting in an Environmental Assessment Certificate (“EAC”) and Major Mine & Environmental Management Act permits awarded in early 2026. The EAC is groundbreaking because the Tahltan Nation’s consent to the Eskay Creek project is embedded within the EAC, marking a historic first in Canada through a landmark Section 7 agreement signed in 2022 between the Government of British Columbia and the Tahltan Central Government.
• Maintained a strong safety record through effective training, practices and team collaboration, achieving a 0.99 Total Recordable Injury Frequency Rate per 200,000 hours worked.
• 25.7% women in our direct workforce, exceeding the B.C. mining average of 21.1%, with 30% in management roles.
• 21% Indigenous people in our direct workforce, outperforming the B.C. mining average of 5.4%, with 10% in management positions.
• 87% of total procurement spend ($443 million after tax) occurred within Canada, with the majority (62%) in B.C. and 20% ($88 million) with Indigenous businesses and entities.
• Secured clean low-cost power for Eskay Creek through an electricity and interconnection agreement with BC Hydro & Coast Mountain Hydro, with site energization expected by late 2026.
• Completed the first stage of construction of a new water treatment plant, which will be an important part of effective water management. The Eskay Creek mine will be the first Canadian mine that is adhering to increased water management standards, which are among the highest in the world.
• Opened an on-reserve office in Dease Lake, supporting Indigenous employment and strengthening our connections in Tahltan territory.

Our 2025 Sustainability Report is aligned with the Sustainability Accounting Standards Board (SASB) framework and is available on the Company’s website at www.skeenagoldsilver.com/esg/.

About Skeena

Skeena is a leading precious metals development company focused on advancing the Eskay Creek Gold-Silver Project in British Columbia’s Golden Triangle. With the Project fully permitted and under construction, the Company is progressing Eskay Creek towards initial production and cash flow in the second quarter of 2027. Once in operation, Eskay Creek is expected to be one of the world’s highest-grade and lowest-cost open-pit precious metals mines, with significant silver by-product production that exceeds the output of many primary silver mines. Skeena is committed to responsible and sustainable mining in partnership with Indigenous communities, while maximizing the value of its mineral resources to generate long-term shareholder returns.

On behalf of the Board of Directors of Skeena Gold & Silver,

Walter Coles
Executive Chairman

Randy Reichert
President & CEO

For further information, please contact:
Galina Meleger

Vice President Investor Relations
E: info@skeenagold.com
T: 604-684-8725
W: www.skeenagoldsilver.com

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