Westgold Resources Acquires 19.9% Stake in Great Boulder Resources via Peak Hill Project Transaction

Aragon Resources Receives 392 Million Shares in GBR for Peak Hill Project

The company update lodged on 1 July 2026 confirms that Aragon Resources Pty Ltd, a wholly owned subsidiary of Westgold Resources Limited, was issued 392,255,241 fully paid ordinary shares in Great Boulder Resources as consideration for transferring the Peak Hill Project to GBR. This transaction was governed by a Subscription Agreement executed on 3 May 2026 between Aragon and GBR, with completion occurring on 30 June 2026. The substantial holder notice was signed by Susan Park, acting as company secretary on behalf of each substantial holder listed.

The consideration was entirely non-cash; no cash payment was disclosed in connection with the acquisition. Instead, the 392,255,241 GBR shares represent the full disclosed consideration for the Peak Hill Project. This scrip-for-asset structure is common in Australian junior resource transactions, enabling vendors to maintain economic exposure to the asset through an Equity interest in the acquiring entity rather than receiving upfront cash.

Details of Westgold's 19.9% Stake Acquisition in GBR Through Peak Hill Project Sale

Per the Subscription Agreement, Aragon transferred the Peak Hill Project to Great Boulder Resources in exchange for the newly issued shares. The date Westgold Group Entities became substantial holders—30 June 2026—matches the acquisition date stated in the Form 603 consideration section, confirming that share issuance and project transfer were completed simultaneously.

The 19.9% voting interest held by Westgold Group Entities positions the group just below the 20% threshold that triggers additional regulatory requirements under Australian takeover laws. This stake represents a strategically significant but non-controlling interest in GBR. The announcement does not specify whether Westgold has any rights to increase its stake beyond this level; investors should watch for future disclosures on this matter.

Composition of Westgold Group Entities Listed as Associated Substantial Holders

The Form 603 identifies fourteen associated entities collectively termed the Westgold Group Entities, including Aragon and Westgold. Annexure A of the notice lists these entities, featuring notable names in Western Australia's gold sector such as Big Bell Gold Operations Pty Ltd, Westgold Mining Services Pty Ltd, and former Karora Resources affiliates like Karora Resources Inc., Karora (Beta Hunt) Pty Ltd, and Karora (Higginsville) Pty Ltd. Additional entities include Avoca Resources Pty Ltd, Corona Minerals Pty Ltd, Hill 51 Pty Ltd, Polar Metals Pty Ltd, Westgold Personnel Pty Ltd, and Canadian-linked companies 1474429 B.C. Ltd and Karora Australia Pty Ltd.

Each entity's relevant interest, except for Aragon as the registered holder, arises under section 608(3)(b) of the Corporations Act 2001 due to common control by Westgold Resources Limited. Westgold itself holds a relevant interest under the same provision by controlling Aragon. This layered structure is typical for large mining groups with multiple subsidiaries and reflects the comprehensive disclosure requirements when a group collectively exceeds the 5% substantial holder threshold.

Aragon Resources as Registered Shareholder and Role of the Subscription Agreement

Although multiple Westgold Group Entities are named, Aragon Resources Pty Ltd is the sole registered holder of the 392,255,241 GBR shares. The update confirms Aragon holds the relevant interest and is entitled to be registered as the security holder, meaning the shares appear directly on Aragon's Balance Sheet. Other entities' relevant interests derive solely from control relationships under the Corporations Act.

The Subscription Agreement dated 3 May 2026, annexed as Annexure B to the Form 603, governs the transaction. While referenced in the annexure, the announcement does not detail all terms publicly within the form. Investors and analysts seeking full understanding of conditions, warranties, or post-completion obligations should review the complete Subscription Agreement attached to the notice.

Significance of the Peak Hill Project Within GBR's Asset Portfolio

The Peak Hill Project, transferred by Aragon to GBR under the Subscription Agreement, is the core asset motivating the transaction. The update does not disclose resource estimates, historical production, precise location beyond the project name, or GBR's exploration and development plans for Peak Hill. No valuation figure for the project was provided by either party.

For Great Boulder Resources, acquiring Peak Hill through a scrip-based deal allows asset growth without cash outlay. Investors will focus on the exploration and development potential of Peak Hill and its integration into GBR's portfolio. Upcoming disclosures from GBR regarding project plans or exploration updates will be important milestones.

Westgold Resources' Strategic Role as a Major GBR Shareholder

Westgold Resources Limited is a well-established mid-tier Australian gold producer with operations mainly in Western Australia. Its 19.9% stake in Great Boulder Resources via the Peak Hill Project deal represents a significant strategic alignment. By accepting shares instead of cash, Westgold retains ongoing economic exposure to Peak Hill's performance and GBR's exploration efforts.

From a governance perspective, holding 19.9% as a single institutional investor is a notable development for a junior explorer. This stake could influence future capital raising, strategic decisions, and shareholder composition. The announcement does not clarify whether Westgold or Aragon has board representation, pre-emptive rights, or other governance protections under the Subscription Agreement; investors may seek further information from GBR.

Regulatory Framework: Form 603 Substantial Holder Disclosure Requirements

The notice is a Form 603—Notice of Initial Substantial Holder—required under section 671B of the Corporations Act 2001. This applies when a person or associated group acquires a relevant interest of 5% or more in an ASX-listed company. Lodging the notice within two Business days ensures market transparency regarding significant ownership changes.

Here, the substantial holder date was 30 June 2026, with the form signed on 1 July 2026, complying with statutory deadlines. The disclosed relevant interests cover multiple Westgold corporate entities collectively holding 392,255,241 shares and 19.9% voting power due to common control. Susan Park signed the form on behalf of all substantial holders named.

Implications of the 19.9% Voting Interest Threshold and Potential Future Changes

The 19.9% voting interest is strategically significant, as Australian takeover law under Chapter 6 of the Corporations Act generally requires compliance with Takeover provisions when crossing the 20% threshold. These provisions include making a formal bid, shareholder approval, or qualifying exceptions. Structuring the stake at 19.9% suggests deliberate avoidance of triggering these requirements.

The announcement does not indicate any intent by Westgold to increase its stake beyond this level. However, investors should monitor whether Westgold's holding remains stable or changes, especially in the event of future GBR capital raises or market transactions. Any increase above 20% would invoke additional regulatory and disclosure obligations.

Investor Considerations Following Westgold's Entry into GBR

Westgold Resources becoming a near-20% shareholder is a material event in GBR's corporate narrative. The transaction confirms GBR's acquisition of the Peak Hill Project and the involvement of a credible, well-resourced gold producer retaining significant equity. The scrip-based deal means GBR avoided diluting existing shareholders through a cash capital raise.

Investors should watch for further announcements from GBR on Peak Hill's terms and value, exploration updates, any changes in Westgold's shareholding through market activity or capital raisings, and details of any Subscription Agreement provisions such as Escrow, standstill agreements, or board nomination rights not yet publicly disclosed. The immediate impact on GBR's share price was not evident from available information at the time of this report.