UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): November 17, 2017

OXFORD IMMUNOTEC GLOBAL PLC

(Exact name of registrant as specified in its charter)

England and Wales

(State or other jurisdiction

of incorporation)

94C Innovation Drive, Milton Park, Abingdon OX14 4RZ, United Kingdom

(Address of principal executive offices)

Registrant’s telephone number including area code +44 (0) 1235 442780

Check appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

Item 1.01 Entry into a Material Definitive Agreement.

On November 17, 2017, Oxford Immunotec Ltd. (“OI Ltd.”), a wholly owned subsidiary of Oxford Immunotec Global PLC (“OI Global”), entered into a Second Amendment to Purchase Agreement (the “Second Amendment”) with Mabtech AB (“Mabtech”).

The Second Amendment amends the Purchase Agreement between OI Ltd. and Mabtech dated February 6, 2010 (the “Agreement”), as amended by an Amendment to Purchase Agreement dated September 10, 2013 (the “First Amendment”), pursuant to which Mabtech supplies OI Ltd. with antibodies used to coat the membrane plates used in tests leveraging our T-SPOT® technology. The Second Amendment extends the term of the Agreement until December 31, 2023 and establishes pricing.

The Agreement and First Amendment were originally filed as Exhibits 10.12 and 10.13, respectively, to OI Global’s Registration Statement on Form S-1 (File No. 333-191737) filed on October 15, 2013.

The foregoing descriptions of the Agreement and the First Amendment do not purport to be complete and are subject to, and are qualified in their entirety by reference to the full and complete terms of the Agreement and the First Amendment which are incorporated by reference herein. In addition, the foregoing description of the Second Amendment does not purport to be complete and is subject to, and qualified in its entirety by, the full and complete terms of the Second Amendment, which will be filed as an exhibit to OI Global’s next periodic report.

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: November 21, 2017