ODVWZ · Osisko Gold Group Inc.

Osisko Development Corp. released Q1 2026 financial and operating results via Exhibit 99.1, highlighting a strong liquidity position with $594.3 million in cash and equivalents as of March 31, 2026, supporting advancement of the flagship Cariboo Gold Project. The company generated initial revenues of $2.2 million (nil in Q1 2025) from small-scale activities at the 100%-owned Tintic Project in Utah, including heap leaching and direct shipping of 270 ounces of gold, though this resulted in a $9.7 million operating loss, improved from $40.8 million last year. Balance sheet strength was further enhanced by $196.3 million (US$143.8 million) gross proceeds from a February prospectus offering of 40,607,650 common shares at US$3.54 each, and $36.5 million from warrant exercises, including $24.9 million from Appian-advised funds. Approximately US$109.9 million remains outstanding under the initial draw of the US$450 million 2025 Financing Facility with Appian for Cariboo development. At Cariboo in British Columbia, activities resumed on March 2 under a phased plan following a January 22 fatal contractor incident and investigation, with a February 9 agreement with JDS Energy & Mining for project management. Infill drilling in the Lowhee Zone reached 100% completion (13,684 metres), with assays pending for Q2 2026. Pre-construction advances include 2.1 km underground development, water treatment plant commissioning, and camp expansion to 266 rooms. Eleven drill rigs are active across infill, conversion, and exploration programs targeting up to 160,000 metres in 2026. Corporate moves included selling the San Antonio Gold Project on January 27 to Axo Copper Corp., appointments of Sarah Harrison as VP Permitting & Compliance and Sarah MacDonald as VP Construction Contracting, and inclusion in the VanEck GDXJ ETF effective March 20. 2026 objectives outline $39.5 million for underground development and other expenditures totaling over $67 million, subject to board approval. These updates signal operational resumption, financing success, and project momentum for investors.