Sec Form 4 Filing - MCKENZIE W THORPE @ XBiotech Inc. - 2018-09-26

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MCKENZIE W THORPE 2. Issuer Name and Ticker or Trading Symbol XBiotech Inc. [ XBIT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 8201 EAST RIVERSIDE DRIVE, BUILDING 4, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 09/26/2018 (Street) AUSTIN, TX78744 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 09/26/2018 S 17,634 D $ 3.0508 ( 1 ) 3,783,600 D Common Stock 11,500 I Trust Common Stock 100,000 I Foundation

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MCKENZIE W THORPE 8201 EAST RIVERSIDE DRIVE BUILDING 4, SUITE 100 AUSTIN, TX78744 X X Signatures /s/ Queena Han under Power of Attorney for W. Thorpe McKenzie 10/01/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.00 to $3.13, inclusive. The reporting person undertakes to provide to XBIT, any security holder of XBIT, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Remarks: Effective June 29, 2018, W. Thorpe McKenzie (the "Reporting Person"), a Director of XBiotech, Inc. (the "Company"), adopted a stock trading plan (the "10b5-1 Plan"). For personal tax and financial planning purposes, Mr. McKenzie presently intends to sell up to approximately 15% of his total holdings in the Company in monthly installments, beginning on July 30, 2018 and which will terminate on or before February 28, 2019. The 10b5-1 Plan was adopted in accordance with guidelines specified by Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, and the Company's insider trading policies.Rule 10b5-1 permits corporate officers, directors and others to adopt written, pre-arranged stock trading plans when they are not in possession of material, non-public information. Using these plans, insiders may gradually diversify their investment portfolios and spread stock trades over a period of time regardless of any material, non-public information they may receive after adopting their plans. In accordance with Rule 10b5-1, Mr. McKenzie will have no discretion over the sales of his shares of common stock under the plan. As reflected in this Form 4, the Reporting Person exercised and sold 17,634 shares of XBiotech Inc. common stock on the open market as part of this 10B5-1 trading plan.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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