XBiotech Inc.
XBIT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001626878
No open-market purchases or sales by XBiotech Inc. insiders were filed in the last 90 days; 36 institutions reported holding it in 13F filings for Q2 2026, worth $4.56M in total; no superinvestor holds it.
Holders of 5% or more of XBIT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of XBiotech Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Simard John | 13G/A | 17.70%5.72M shares | −2.20 ppfrom 19.90% | Feb 16, 20225 filings | Jan 23, 2026 | SEC |
| McKenzie W Thorpe | 13G/A | 9.76%3.01M shares | +0.05 ppfrom 9.71% | Feb 16, 20225 filings | Jan 23, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
15 Schedule 13D and 13G filings on XBiotech Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jan 23, 20264:33 PM ET | McKenzie W Thorpe | 13G/A | 9.76%3.01M shares | +0.05 ppfrom 9.71% | Dec 31, 2025 | SEC |
| Jan 23, 20262:06 PM ET | Simard John | 13G/A | 17.70%5.72M shares | −2.20 ppfrom 19.90% | Dec 31, 2025 | SEC |
| Jan 27, 20252:39 PM ET | McKenzie W Thorpe | 13G/A | 9.71%2.99M shares | – | Dec 31, 2024 | SEC |
| Jan 27, 20252:36 PM ET | Simard John | 13G/A | 19.90%6.62M shares | – | Dec 31, 2024 | SEC |
| Feb 7, 2024 | Simard John | 13G/AOld format | – | – | – | SEC |
| Feb 7, 2024 | Gut Thomas | 13G/AOld format | – | – | – | SEC |
| Feb 7, 2024 | McKenzie W Thorpe | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | McKenzie W Thorpe | 13GOld format | – | – | – | SEC |
| Feb 10, 2023 | Simard John | 13GOld format | – | – | – | SEC |
| Feb 10, 2023 | Gut Thomas | 13GOld format | – | – | – | SEC |
| Jan 12, 2023 | Lombard International Assurance S.A. | 13GOld format | – | – | – | SEC |
| Jun 16, 2022 | Gut Thomas | 13GOld format | – | New | – | SEC |
| Feb 16, 2022 | McKenzie W Thorpe | 13GOld format | – | New | – | SEC |
| Feb 16, 2022 | Simard John | 13GOld format | – | New | – | SEC |
| Jan 13, 2022 | Lombard International Assurance S.A. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell XBiotech Inc. shares.
No Form 144 notices for XBiotech Inc. are on file.