SSR MINING INC.

Non-GAAP Measure - Cash Costs and AISC

Cash Costs and AISC per payable ounce of gold and respective unit cost measures are non-U.S. GAAP metrics developed by the World Gold Council to provide transparency into the costs associated with producing gold and provide a standard for comparison across the industry. The World Gold Council is a market development organization for the gold industry.

The Company uses cash costs per ounce of precious metals sold to monitor its operating performance internally. The most directly comparable measure prepared in accordance with GAAP is Cost of sales. The Company believes this measure provides investors and analysts with useful information about its underlying cash costs of operations and the impact of by-product credits on its cost structure. The Company also believes it is a relevant metric used to understand its operating profitability. When deriving the cost of sales associated with an ounce of precious metal, the Company includes by-product credits, which allows management and other stakeholders to assess the net costs of gold and silver production.

AISC includes total Cost of sales incurred at the Company’s mining operations, which forms the basis of cash costs. Additionally, the Company includes sustaining capital and lease related expenditures, sustaining mine-site exploration and evaluation costs, reclamation cost accretion and amortization, and general and administrative expenses. This measure seeks to reflect the ongoing cost of gold and silver production from current operations; therefore, growth capital is excluded. The Company determines sustaining capital to be capital expenditures that are necessary to maintain current production and execute the current mine plan. The Company determines growth capital to be those payments used to develop new operations or related to projects at existing operations where those projects will materially benefit the operation.

The Company believes that AISC provides additional information to management and stakeholders that provides visibility to better define the total costs associated with production and better understanding of the economics of the Company's operations and performance compared to other producers.

In deriving the number of ounces of precious metal sold, the Company considers the ounces available for sale after the treatment and refining process, commonly referred to as payable metal, as this is what is sold to third parties.

The following tables provide a reconciliation of cost of sales to cash costs and AISC:

(2)Effective January 1, 2026, the Company calculates gold equivalent ounces using a fixed silver-to-gold ratio of 63:1. The Company does not include by-products in the gold equivalent ounce calculations. Gold equivalent ounces sold may not recalculate based on amounts presented in this table due to rounding.

(2)Care and maintenance expense only includes direct costs not associated with environmental reclamation costs, as depreciation is not included in the calculation of AISC.

(3)In prior periods, gold equivalent ounces were calculated multiplying the silver ounces by the ratio of the silver price to the gold price, using the average closing commodity prices for the period. The Company does not include by-products in the gold equivalent ounce calculations. Gold equivalent ounces sold may not recalculate based on amounts presented in this table due to rounding.

(2)Effective January 1, 2026, the Company calculates gold equivalent ounces using a fixed silver-to-gold ratio of 63:1. The Company does not include by-products in the gold equivalent ounce calculations. Gold equivalent ounces sold may not recalculate based on amounts presented in this table due to rounding.

(1)The reported AISC amounts reflect results for CC&V from the date of acquisition on February 28, 2025 through September 30, 2025.

(3)Care and maintenance expense only includes direct costs not associated with environmental reclamation costs, as depreciation is not included in the calculation of AISC.

(4)In prior periods, gold equivalent ounces were calculated multiplying the silver ounces by the ratio of the silver price to the gold price, using the average closing commodity prices for the period. The Company does not include by-products in the gold equivalent ounce calculations. Gold equivalent ounces sold may not recalculate based on amounts presented in this table due to rounding.