ASIC v. Darryl Mapleson (insider trading, 2025)

Judgment entered

✓ Checked against the primary document on October 3, 2026. The library's summary, tags and figures for this record were compared with the regulator's own document by an AI model (Claude) following written instructions, with sampled and disputed records read a second time. No lawyer has reviewed them. A checked record can still contain errors, and checked does not mean endorsed. See how we check records or report a correction.

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In May 2025 ASIC announced that Darryl Mapleson, who provided geological services to Beacon Minerals, pleaded guilty in the Supreme Court of Western Australia on 12 May 2025 to one count of insider trading, amended to cover two trades. The charge is that he procured two companies he directed to buy 6,792,850 Beacon shares in January 2017 while knowing undisclosed drilling results. Two further charges were discontinued and sentencing was set for 6 August 2025.

The record

What was ordered

Civil penalty

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Disgorgement

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Prejudgment interest

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Total relief

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Alleged gain

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A dash means the release did not state a figure we could extract, not that the figure is zero. Penalty and disgorgement are stored separately so aggregates across the library do not double-count the same dollars.

What is alleged to have happened

The Australian Securities and Investments Commission announced the plea in release 25-078MR, the latest step in a case in which Mapleson first appeared in May 2021.

The release notes a related case against Alexander McCulloch, a former Beacon project manager who pleaded not guilty to two counts of insider trading and is provisionally listed for trial in November 2026. No sentence is recorded.

For the regulator's own account of the facts, read the primary document linked above. This page deliberately summarises the structured record rather than reproducing the release.

What technique is this, and how does it work?

This action is tagged with one technique in our taxonomy. The tagging is ours: regulators charge statutory provisions, not technique names, so the mapping is an editorial judgement described in our editorial policy.

• Insider trading — see how it works, what statute it engages, and every other action tagged the same way.

Timeline

1. 2025-05-16 ASIC media release

Primary documents

Everything on this page derives from the documents below. Where our summary and the primary document disagree, the primary document is right.

• ASIC media release

The linked release is published by the issuing regulator under its own terms. Our summary and narrative above are our own writing.

Related actions

Other actions in the library sharing at least one technique tag with this one.

Record added September 10, 2026. submit a correction.