JAKARTA – PT Amman Mineral Internasional Tbk. (AMMN) is set for a significant leadership change as Irwin Ka Pui Wan, a Director who has served since 2021, has officially tendered his resignation. This development was formally communicated to the public via an information disclosure filed with the Indonesia Stock Exchange (BEI).
Amman Mineral confirmed that it received official notification from Mr. Wan regarding his intention to step down from his directorship at AMMN on Thursday, May 14, 2026. This announcement was subsequently made public by Vemmy Febrianti, Corporate Secretary of AMMN, in an official statement to the BEI on Monday, May 18, 2026.
Following this notification, the company will present Mr. Wan’s resignation for approval at its upcoming Annual General Meeting of Shareholders (RUPST), scheduled for Tuesday, May 19, 2026. The approval process is a standard procedure for such corporate leadership changes.
Mr. Wan brought a wealth of experience to Amman Mineral, leveraging over two decades of global expertise across the mining, earthworks, and engineering sectors. Since joining AMMN in 2016, he has been instrumental in driving operational and cultural transformation within the company, particularly during its critical ownership transition period.
Prior to his tenure at AMMN, Irwin Ka Pui Wan held prominent senior management roles, including at Leighton (Thiess) Contractors. He also served as a principal advisor for the HKND Group, contributing to the monumental Great Nicaragua Canal project, recognized as one of the largest earthworks and infrastructure undertakings of its era. His extensive career also saw him as Project Director and Head of Mining for ASX-listed Hunnu Coal Limited and SET-listed energy firm Banpu, where he oversaw vital coking coal mining operations in Mongolia.
A testament to his professional acumen, Mr. Wan is a distinguished member of the Australasian Institute of Mining and Metallurgy and holds the qualification of a Competent Person for JORC Code reporting. His robust academic background includes multiple degrees in engineering with honors, alongside qualifications in commerce, specializing in corporate finance, financial investment, and accounting, all earned from the prestigious University of Western Australia.
This leadership transition, however, unfolds against a backdrop of considerable market volatility for AMMN shares. The company’s stock has experienced a significant downturn, registering a year-to-date (YtD) decline of -50.44% by Monday, May 18, 2026. Trading at Rp3,370 at 3:20 PM WIB on the day of the announcement, the shares had opened at Rp3,580 per unit, reflecting ongoing market pressures.
In response to these noticeable market movements and queries regarding stock volatility, Vemmy Febrianti clarified in a separate disclosure to the Indonesia Stock Exchange (BEI) that Amman Mineral currently possesses no undisclosed material information or facts. She emphasized that the company adheres strictly to the regulations outlined in Financial Services Authority Regulation Number 31/POJK.04/2015.
Furthermore, Ms. Febrianti reiterated that the company is not aware of any other material information or undisclosed facts that could potentially influence the value of its securities or impact investor decisions, as stipulated by BEI Regulation Number I-E concerning Information Disclosure Obligations. She concluded by stating, “As of now, we also have no immediate plans to undertake corporate actions in the near future, with the exception of those related to the transfer of shares resulting from buybacks.”
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Summary
Irwin Ka Pui Wan, a Director at PT Amman Mineral Internasional Tbk. (AMMN) since 2021, has officially tendered his resignation. The company received his notification on May 14, 2026, and announced it publicly on May 18, 2026. His resignation will be presented for approval at the upcoming Annual General Meeting of Shareholders on May 19, 2026. Mr. Wan brought over two decades of global mining and engineering expertise to AMMN, having joined the company in 2016.
This leadership transition coincides with significant market volatility for AMMN shares, which recorded a year-to-date decline of -50.44% by May 18, 2026. Corporate Secretary Vemmy Febrianti clarified that Amman Mineral possesses no undisclosed material information or facts influencing its securities. She affirmed the company’s adherence to regulations and stated no immediate corporate actions are planned, except for share transfers resulting from buybacks.