Halo Minerals Regulatory News (HALO)

31 March 2026

Halo Minerals PLC

("Halo Minerals", the "Company")

New Investor Presentation and Webinar

Halo Minerals PLC, the copper development company focused on extracting critical minerals from legacy mining waste, is pleased to announce that the Company has uploaded a new investor presentation to its website at https://halominerals.co.uk/. 

Key Highlights:

· Near term copper and gold production from surface stockpiled metal rich legacy mine tailings - 100%-owned Playa Verde Project, Atacama Region, Chile

· DFS-stage project with 32.2 Mt Ore Reserves (JORC 2012)

· After-tax NPV10 of US$154.1m and IRR of 50.9% (based on CPR Ore Reserve case)*

· Admission proceeds to complete optimised DFS work & progress to final investment decision

· Offshore Potential - secure rights and develop a plan to process the "non-JORC" potential offshore mineral resource estimate of 116 Mt @ 0.25% Cu within the bay.

· Platform upside in Chile - scalable opportunity set in world's leading copper jurisdiction (significant tailings inventory)

· Halo Minerals intends to reprocess legacy mining waste to recover copper while reducing a historic coastal contamination footprint - project activity supports local employment and services, with the long-term outcome of a cleaner, accessible coastline

* Based on CPR assumptions including Cu price of US$5.30/lb and Au price of US$4,300/oz

As previously announced, the Company will be hosting a live presentation through the Investor Meet Company platform on Thursday 9 April 2026 at 11:00 BST. The presentation is open to all existing and potential shareholders. Questions can be submitted pre-event via the Investor Meet Company dashboard up on the platform until Wednesday 8 April 2026 at 09:00 BST or at any time during the live presentation.

Investors can sign up to Investor Meet Company for free and add to meet Halo Minerals via: https://www.investormeetcompany.com/halo-minerals-plc/register-investor

Investors that already follow Halo Minerals on the Investor Meet Company platform will automatically be invited.

The Directors of the Company are responsible for the release of this announcement.

Enquiries:

This communication is a "Reach" announcement. Reach is a non-regulatory news service. By using this service an issuer is confirming that the information contained in this announcement is of a non-regulatory nature. Information required to be notified under the AIM Rules for Companies, Market Abuse Regulation or other regulation would be disseminated as an RNS regulatory announcement and not on RNS Reach.