Nominee accounts

For immediate release: 18 October 2018

This Announcement contains inside information for the purposes of Article 7 of EU Regulation 596/2014 ("MAR"). In addition, market soundings (as defined in MAR) were taken in respect of the Transaction with the result that certain persons became aware of inside information (as defined in MAR), as permitted by MAR. This inside information is set out in this Announcement. Therefore, those persons that received inside information in a market sounding are no longer in possession of such inside information relating to the Company and its securities.

TYRATECH, INC.

("TyraTech" or the "Company")

Nominee accounts

The Company has today sent a letter to shareholders setting out the procedure for voting to be followed by those who hold their shares in nominee accounts in the meeting of TyraTech shareholders (the ''Special Meeting'') of the Company to be held on 31 October 2018 regarding the Merger Agreement with AMVAC. Full details of the Merger Agreement were set out in the Proxy Statement sent to shareholders on 9 October 2018 which can be found on the Company's website.

Additional information

This Announcement is for information only and does not constitute an offer or invitation to underwrite, subscribe for or otherwise acquire or dispose of any securities or investment advice in any jurisdiction, including without limitation, the United Kingdom, the United States, Australia, Canada or Japan. Persons needing advice should consult an independent financial adviser.

The distribution of this Announcement in certain jurisdictions may be restricted by law. Persons into whose possession this announcement comes are required to inform themselves about, and to observe, such restrictions. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.

SPARK Advisory Partners Limited served as exclusive financial advisor to TyraTech and provided a fairness opinion to the Independent Directors. SPARK Advisory Partners Limited, which is authorised and regulated in the United Kingdom by the Financial Conduct Authority, is acting exclusively for the Company and no one else in connection with the Transaction and will not be responsible to anyone other than the Company for providing protections afforded to clients of the Company.