Circular and Notice of General Meeting

Tertiary Minerals PLC

07 October 2026

 

(“Tertiary” or the “Company”)

7 October 2026

CIRCULAR AND NOTICE OF GENERAL MEETING

Further to its announcement of 30 September 2026, Tertiary Minerals plc announces that a Shareholder Circular, including a Notice of General Meeting (the “Circular”), has now been published on the Company’s website at:

https://www.tertiaryminerals.com/shareholder-documents

A letter or email, depending on individual preference, has been sent to registered Shareholders to notify them of the publication of the Circular.

The General Meeting has been convened for 11.00 a.m. on Wednesday 28 October 2026 at The Meeting Room, Silk Point, Queens Avenue, Macclesfield, Cheshire SK10 2BB.

Proxy Voting will be available from 5.00 p.m. today and instructions can be found in the Circular starting on page 14 at the link above.

Unless otherwise defined, capitalised terms used in this announcement, including in the timetable of events set out below, shall have the meanings given to them in the Circular.

Further Information:

Tertiary Minerals plc
Richard Belcher, Managing Director	[phone]
SP Angel Corporate Finance LLP, Nominated Adviser and Broker
Caroline Rowe/Jen Clarke	[phone]
AlbR Capital Limited, Joint Broker
Lucy Williams/Duncan Vasey	[phone]

About Tertiary Minerals plc

Tertiary Minerals plc (AIM: TYM) is an AIM-traded mineral exploration and development company whose strategic focus is on energy transition metals. The Company’s projects are all located in stable and democratic, geologically prospective, mining-friendly jurisdictions. Tertiary’s current principal activities are the discovery and development of copper and precious metal mineral resources in Nevada and in Zambia.

EXPECTED TIMETABLE OF PRINCIPAL EVENTS

Event	Timing
Announcement of the Placing and General Meeting	30 September 2026
Publication and posting of this document (including Notice of General Meeting)	7 October 2026
Latest time and date for receipt of Forms of Proxy and receipt of electronic proxy appointments via the Investor Centre, the CREST System and Proxymity	11.00 a.m. on 26 October 2026
Record date for entitlement to vote at the General Meeting	6.00 p.m. on 26 October 2026
General Meeting	11.00 a.m. on 28 October 2026
Announcement of results of General Meeting	28 October 2026
Admission effective and dealings in the Placing Shares expected to commence on AIM (subject to Shareholder approval)	8.00 a.m. on 29 October 2026
CREST accounts credited in respect of the conditional Placing Shares (subject to Shareholder approval)	8.00 a.m. on 29 October 2026

Notes:

1.                     If any of the details contained in the timetable above should change, the revised times and dates will be notified to Shareholders by means of an announcement through a Regulatory Information Service.

2.                    All references to times and dates in this document are to times and dates in London.

 

END