EXHIBIT 10.26

THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENT REQUEST. REDACTED MATERIAL IS MARKED WITH [***] AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

AMENDMENT

TO

MARKETING AUTHORIZATION HOLDER AGREEMENT

(“Amendment 1”)

This Amendment (“Amendment 1”) is made this 1st day of September, 2013, by and between Oxford Immunotec Limited, a company organized and existing under the laws of UK, address at 94C Milton Park, Abingdon, Oxfordshire OX14 4RY United Kingdom (hereinafter referred to as “MANUFACTURER”, and RIKEN GENESIS CO., LTD., a company organized and existing under the laws of Japan, address at 1-5-1 Taito, Taito-ku, Tokyo 110-8500. Japan (hereinafter referred to as “MAH”)

Recitals:

WHEREAS, MANUFACTURER and MAH are parties to the Marketing Authorization Holder Agreement dated July 29, 2011 (“Agreement’);

WHEREAS, as of July 1st, 2012 (“Effective Date”), the parties agreed to modify the Agreement to adjust the commission defined in the Agreement; and

WHEREAS, MANUFACTURER and MAH now wish to memorialize the amounts to be paid by MANUFACTURER to MAH under the Agreement.

NOW, THEREFORE IN CONSIDERATION OF THE FOREGOING, and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged and agreed, MANUFACTURER and MAH agree to amend the Agreement as follows:

IN WITNESS WHEREOF, the parties have executed this Amendment 1 as of the date first above written.

THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENT REQUEST. REDACTED MATERIAL IS MARKED WITH [***] AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

APPENDIX A (Effective as of July 1st, 2012)

DMAH Service Package for in-Vitro Diagnostics

We (MAH) support marketing in Japan for the PRODUCTS placed on the market by the foreign manufacturer.

We must act as the foreign manufacturer’s contact point for all Japanese Authorities.

We oversee the GQP and will be in charge of monitoring the shipping and receiving methods of the foreign manufacturer.

We communicate with your packaging manufacturer to develop the Quality Agreement and assist in preparation of the Manufacturing Standard (Seihinhvojunsho) for labeling and warehousing as applicable.

We are responsible for establishing and ensuring the release criteria and Quality Standard (Hinshitsuhyojunsyo) for each PRODUCT.

We register JAN code to MEDIS for each item of the PRODUCTS.

We protect the confidentiality of your documentation. The Japanese Authorities are the only entities to whom we will show the documents, and only upon their request.

THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENT REQUEST. REDACTED MATERIAL IS MARKED WITH [***] AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

Fee Structure

One time initiation fee of JPY 200,000 upon signing of this Agreement. This includes the fee for review of IVD documentation, labeling, and developing the required Quality Standard (Hinshitsuhyojunsyo) and Import Submission, Quality Agreement, JAN Code registration. An additional one-time [***] fee per a PRODUCT family is required for an additional PRODUCT family. This also includes the review of IVO documentation, labeling, and developing the required Quality Standard (Hinshitsuhyojunsyo) and Import Submission.

DMAH Retainer and Handling Fee:

We charge a monthly retainer handling fee and commission per commercial invoice at custom clearance for PRODUCTS listed in APPENDIX B (collectively the “Monthly Fee”)

We offer the following three Monthly Fee options. OPTION 1:

JPY 150,000 per month plus [***] commission applied to each commercial invoice for a PRODUCT listed in APPENDIX B, invoiced monthly.

OPTION 2:

JPY 100,000 per month plus [***] commission applied to each commercial invoice for a PRODUCT listed in APPENDIX B, invoiced monthly.

OPTION 3 (In case the PRODUCTS are delivered directly to DISTRIBUTOR by MANUFACTURER):

JPY 150,000 per month plus [***] commission applied to each commercial invoice for a PRODUCT list APPENDIX B. The [***] will be charged monthly and the commission of [***] will be charged per shipment.

Note:

Once you have reached [***] in total fees paid to MAH for the current calendar year, MAH will waive the Monthly Fee going forward for the remainder of the calendar year (except as set forth in the next succeeding bullet point).

However, if the total invoiced amount for the year cleared through customs reaches [***], MAH will charge a [***] commission on the invoiced amount in excess of the [***], in addition to the already charged [***].

To set-up Import Procedure for shipping process, [***] is charged per DISTRIBUTOR, if any. This includes necessary communication with the DISTRIBUTOR including explanation of new import procedure.

If necessary, vigilance/reportable event reporting will be charged on an hourly rate basis of [***].

If an on-site audit of your facilities is required, fees will be charged at the rate of [***] per person per day, with a fee cap of [***] (2 persons for 2 days). In addition, Manufacturer will reimburse MAH for reasonable out-of-pocket travel expenses of the auditing team, at cost (without mark-up), with all air travel in economy class and accommodations at standard business (not luxury) hotels. MAH will endeavour to use audit personnel who are geographically proximate to the facility to be audited. In the event the on-site audit cannot be completed by two persons in two days (or by one person in four days), the parties agree to discuss appropriate adjustments to the fee cap.

Travel expenses where applicable are charged at cost.

THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENT REQUEST. REDACTED MATERIAL IS MARKED WITH [***] AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

The amount of fees for custom clearances including consumption taxes to be paid at customs clearance which must be paid to MAH before customs clearance can occur. We will invoice the amount of fees to your DISTRIBUTOR as a substantial importer and not release PRODUCT to your DISTRIBUTOR until paid.

Notes: