Regulus Adopts Defensive Plan Amid Key Project Updates

VANCOUVER, British Columbia – March 31, 2026 – In a dual-pronged announcement that signals both a defensive posture and a commitment to forward progress, Regulus Resources Inc. (TSX-V: REG) has adopted a shareholder rights plan while providing a much-anticipated update on its flagship AntaKori copper-gold project in Peru. The market responded favorably, with the company's stock climbing over 8% in early trading, suggesting investors see strategic value in the moves.

The Vancouver-based junior miner announced the implementation of a shareholder rights plan, often called a “poison pill,” effective March 30, 2026. This move is designed to protect the company from unsolicited or “creeping” takeover bids, where an entity could quietly accumulate a controlling stake without offering fair value to all shareholders.

Fortifying the Castle

The shareholder rights plan is a common tool in the Canadian corporate playbook, particularly for junior resource companies whose market valuations may not fully reflect the long-term potential of their underlying assets. The plan adopted by Regulus is triggered if any single entity, along with its associates, acquires 20% or more of the company's shares without making a formal “Permitted Bid” that is open to all shareholders.

Should the trigger be crossed, the plan would allow existing shareholders—excluding the acquirer—to purchase additional shares at a steep 50% discount, a mechanism that would severely dilute the hostile party’s stake and make a takeover prohibitively expensive.

Regulus was quick to note that the plan was “not implemented in response to, or in anticipation of, any pending or threatened take-over bid.” This language is standard, but the subtext is clear: with a world-class asset like AntaKori, management is taking proactive steps to ensure any potential change of control happens on its own terms. The move aligns Regulus with other junior miners, such as Aldebaran Resources and Hemlo Mining Corp., which have recently established similar defensive shields.

While initiated by the board, the plan is not a permanent fixture without shareholder consent. It is subject to approval by the TSX Venture Exchange and must be ratified by shareholders at the company’s annual meeting, expected in the second quarter of 2026. This requirement ensures that ultimate control over the company's defensive strategy rests with its owners.

Progress and Patience at AntaKori

Beyond the corporate maneuvering, the company provided a critical update on its AntaKori copper-gold-silver project in northern Peru. The central point of interest for investors has been the long-awaited Mineral Resource Estimate (MRE) for the integrated Tantahuatay-AntaKori Sulphide project. Regulus acknowledged that completing this MRE has “taken longer than anticipated.”

The company attributed the delay to the complexities of coordinating multiple groups, each with different perspectives on geology and estimation techniques. Integrating data from two adjacent but distinct projects is a massive undertaking, requiring the harmonization of geological models and resource classification parameters to meet the rigorous standards of Canada's National Instrument 43-101. While the company stated that most issues have been resolved and documentation is being finalized, the delay underscores the technical hurdles inherent in advancing a project of this scale. The MRE is a cornerstone document that will underpin all future economic studies, making its accuracy paramount, even at the cost of time.

Pushing Forward with Innovation and Expansion

Despite the MRE delay, Regulus highlighted significant progress on other fronts that could unlock substantial value at AntaKori. The company continues its collaboration with Nuton LLC, a venture backed by mining giant Rio Tinto, to test a proprietary sulphide bio-leaching technology. This innovative process uses microorganisms to extract copper from sulphide ores, which can be difficult and costly to process using traditional methods.

Bio-leaching offers the potential for lower capital costs, reduced environmental impact, and the ability to economically process lower-grade material that might otherwise be considered waste. With final results from ongoing column tests expected in the coming months, a successful outcome could fundamentally improve the economic calculus for the AntaKori project, making it more robust and attractive for development. This focus on cutting-edge technology demonstrates a forward-thinking approach to maximizing the asset's value.

Furthermore, Regulus is actively working to expand its footprint in the region. The company is navigating the complex Peruvian permitting process to begin drilling on nearby claims where it holds an option to earn a 60% interest from Gold Fields Ltd. This area, which has a history of small-scale, high-grade copper-gold mining, represents a significant exploration upside for Regulus. Success here could materially add to the overall resource base and project scale.

Navigating Peru’s regulatory and social landscape is a challenge in itself, requiring careful engagement with local communities and government authorities. The fact that Regulus is actively managing this process while advancing its core project and exploring new technologies illustrates the multi-front balancing act required to succeed in the junior mining sector. The company's simultaneous focus on protecting shareholder value through corporate governance and creating it through diligent, innovative project development paints a picture of a management team determined to see its flagship asset reach its full potential.