Tertiary Minerals Regulatory News (TYM)

Tertiary Minerals plc

www.tertiaryminerals.com

("Tertiary" or "the Company")

31 July 2020

Director Dealing, Issue of Equity and

Total Voting Rights

Tertiary Minerals plc, the AIM traded company building a multi-commodity project portfolio announces that pursuant to terms agreed on 30 April 2014 and further to the RNS dated 20 August 2014, a non-executive director of the Company will be receiving settlement of a portion of his outstanding fees in ordinary shares of 0.01 pence each in the Company ("Ordinary Shares"), on a six-monthly ongoing basis calculated with reference to the closing mid-market price on the trading day prior to the issue of the Ordinary Shares.

On 31 July 2020, the Company resolved to issue a total of 587,722 Ordinary Shares to Donald McAlister for the six-month period ended 30 June 2020.

These Ordinary Shares were issued at a price of 0.230 pence per share, being the closing mid-market price on 30 July 2020.

The following table shows the number of Ordinary Shares issued to Donald McAlister together with his total holdings following the issue of the Ordinary Shares:

Application has been made to the London Stock Exchange for 587,722 Ordinary Shares to be admitted to trading on AIM ("Admission"), and it is expected that Admission will occur at 8:00a.m. on or around 6 August 2020.

Total Voting Rights

In accordance with Financial Conduct Authority's Disclosure and Transparency Rules ("DTRs"), the total issued share capital as at today's date is 831,058,315. Following the issue and Admission of the ordinary shares to Donald McAlister, the total issued share capital of the Company with voting rights will be 831,646,037 ordinary shares.

There are no shares currently held in treasury. The total number of voting rights in the Company will therefore be 831,646,037 and this figure may be used by shareholders as the denominator for the calculations by which they determine if they are required to notify their interest in, or a change to their interest in, the Company under the DTRS.

Market Abuse Regulation

The notifications below, made in accordance with the requirements of the EU Market Abuse Regulation, provides further detail on the issue of ordinary shares to a director.

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM.

Notes to Editors

Tertiary Minerals plc (ticker symbol 'TYM') is an AIM-traded mineral exploration and development company building a multi-commodity project portfolio.