RYES 8-K filed 2026 · insiderdelta

Item 8.01 Other Events.

In its May 20, 2026 press release, Rise Gold Corp. (the "Company") announced that the United States District Court, Eastern District of California, has ruled in favor of Community Environmental Advocates ("CEA") and has granted Summary Judgment in Case Number 2:24-cv-03643.  As previously disclosed in the Company's regulatory filings, CEA brought suit against Rise Grass Valley Inc. ("Rise"), a subsidiary of the Company, alleging that Rise is responsible for pollutants entering into a local creek without a permit, in violation of the Clean Water Act, 33 U.S.C. 1311 (a), 1365 (a), and 1365 (f).

The suit alleges that three discharges containing metals, including arsenic, come from water from historic Idaho-Maryland mine shafts.  Rise does not own the surface drains.  Nor does Rise own the top two hundred vertical feet of ground where the shafts are located.  The mine shafts in question were decommissioned long ago and covered up with buildings located on top of them.  No sampling of water in the mine shafts has occurred below 200 feet of the surface where the alleged discharges are occurring.  Rise has sampled water in the mine at the New Brunswick shaft, and no arsenic was detected.  The bedrock near the alleged discharge locations points is comprised of serpentinite, which contains significant quantities of naturally occurring arsenic. The near-surface bedrock is highly fractured, allowing rain and ground water to dissolve the arsenic.  The bedrock becomes more competent at depth, where the Rise's mine workings are located.  Rise's water samples also show that the water at depth is deoxygenated.  Since acid rock drainage requires oxygen, it is unlikely that water in the mine is picking up arsenic and other metals.  The alleged discharges also notably include other pollutants like E. Coli, coliform, and toluene, none of which could have originated from the mine.

A summary judgment proceeding requires the judge to construe any disputed facts in favor of the non-moving party.  Rise disputes the allegation that the water in the mine below 200 feet is causing any discharge that violates the Clean Water Act.  Rise also notes that there is no evidence that the culvert alleged discharging the water is connected to the shaft.  Nor is there any evidence that the shaft, which was decommissioned a century ago, remains connected to the mine workings. Rise believes that, by assuming that the CEA's allegations are true, the judge misapplied the standard for summary judgment.

Rise management and its lawyers are reviewing the ruling.

Additional information is provided in the news release issued by the Company on May 20, 2026, a copy of which is filed herewith as Exhibit 99.1.
RYES Rise Gold Corp. - 8-K

Item 8.01 - Other Events

Item 9.01 - Financial Statements and Exhibits
