SCHEDULE: W. Thorpe McKenzie Boosts XBIOTECH Stake to 9.76%

W. Thorpe McKenzie has reported beneficial ownership of 9.76% of XBIOTECH INC.'s common shares as of December 31, 2025.

Summary

• W. Thorpe McKenzie beneficially owns an aggregate of 3,006,259 common shares of XBIOTECH INC.
• This ownership represents 9.76% of the company's common shares outstanding.
• The calculation of the percentage is based on 30,487,731 shares outstanding as of December 31, 2025, plus 302,500 shares issuable upon the exercise of stock options by Mr. McKenzie.
• Mr. McKenzie holds sole voting power and sole dispositive power over 2,899,971 shares.
• Shared voting power and shared dispositive power are held over 106,288 shares.
• The shared shares include 66,748 shares held by the McKenzie Foundation, 31,864 shares by Mr. McKenzie's spouse, and 7,676 shares in a Trust for Mr. McKenzie's stepchildren.
• Mr. McKenzie disclaims beneficial ownership of the shares held by his spouse, foundation, and stepchildren's trust, except to the extent of his pecuniary interest therein.

Sentiment

Score: 5

Explanation: This is a factual disclosure of beneficial ownership and does not inherently convey positive or negative sentiment regarding the company's operational or financial performance.

Positives

• NA

Negatives

• NA

Risks

• NA

Future Outlook

NA

Industry Context

NA

Related Party Transactions

• W. Thorpe McKenzie disclaims beneficial ownership of 66,748 shares held by the McKenzie Foundation, 31,864 shares held by his spouse, and 7,676 shares held in a Trust for his stepchildren, except to the extent of his pecuniary interest therein. These shares contribute to his shared voting and dispositive power.

Stakeholder Impact

• Shareholders are informed of a significant beneficial owner's stake, which can influence corporate governance and potential future strategic directions.

Key Dates

Keywords

XBIOTECH INC., W. Thorpe McKenzie, Beneficial Ownership, Schedule 13G, Common Shares, Equity Stake, SEC Filing