X0508 4 2025-10-01 0001626878 XBiotech Inc. XBIT 0002089248 Soffer David Spencer 1910 SOMMERFELD AVE SASKATOON A9 S7J 2E3 SASKATCHEWAN, CANADA true false false false false Director Stock Option 2.64 2025-10-01 4 A false 51000 0 A 2025-02-01 2035-10-01 Common Stock 51000 51000 D On October 1, 2025 (the Grant Date) the reporting person was granted nonstatutory stock options (the Options) under the Company's 2025 Equity Incentive Plan to purchase shares of the Company's Common Stock (the Shares) at an exercise price equal to the closing sales price of the Shares on the Grant Date as quoted by the Nasdaq Stock Market. The Options vest in two equal portions at four month and ten month from the Grant Date with an expiry of ten years from the Grant Date.David David Soffer 2025-11-12