OREMAVEN
XMM 7,722.00 -2.63% YTD +5.6% OM ASX 450.55 -2.56% YTD +0.1% OM PRECIOUS 349.20 -2.24% YTD +2.5% OM EX-PREC 418.91 -2.72% YTD -1.1% XAU 4,115.59 +2.31% YTD -4.9% GLD 375.49 +0.81% YTD -5.2% GDX 85.75 +1.37% YTD -0.0% SIL 77.33 -1.00% YTD -7.3% COPX 70.23 -5.81% YTD -1.8% URNM 40.07 -2.79% YTD -27.0%
2026-11-06

← MAH management

Full background report

Bryn Vaughan

Executive General Manager HSSEQT

Career chronology

  • Joined Decmil in June 2019; joined Macmahon on its 2024 acquisition and became EGM HSSEQT in December 2025; previously senior safety roles at CPB.: Macmahon Holdings Limited — Executive General Manager HSSEQT. Annual Report FY2026 (physical PDF p. 43, executive biography)

  • Before Macmahon acquisition in August 2024: Decmil Group Limited — Group HSES manager. Decmil Annual Report 2023 (pp. 24–25 management biographies); Acquisition of Decmil completed (p. 1 acquisition completion)

Education and qualifications

Qualifications and verification

Education dates not established · issuer reported · low materiality

The issuer reports a Masters degree in occupational health and safety; independent university verification is unavailable.

Attribution: Responsibility not applicable. Issuer or professional biography reports qualifications; no direct independent verification is implied.

Relevance: Relevant to assessing professional preparation.

Annual Report FY2026 (physical PDF p. 43, executive biography)

Business failures and setbacks

Decmil prior financial setbacks

FY2022–August 2024 · documented · medium materiality

The Decmil scheme booklet’s independent expert reports company net losses of A$1.8m in FY2023 and A$1.8m in the half year to December 2023, following a A$103.2m loss in FY2022. Macmahon completed its acquisition of Decmil in August 2024. The FY2022 loss preceded Baddock and Barnes joining Decmil; Vaughan joined in 2019. These are company-level outcomes.

Attribution: Role overlaps event; causation unproven. Executive roles overlapped some reported periods; the sources do not establish an individual causal contribution.

Relevance: Relevant to management of civil contracting and integration.

Decmil scheme booklet independent expert (independent expert section 5.6.1 financial history); Decmil Annual Report 2023 (printed pp.24–25 management biographies); Acquisition of Decmil completed (p.1 completed acquisition)

Industrial safety

Fosterville fatality and ongoing investigation

December 2025–October 2026 · documented · high materiality

A Macmahon employee died in a 5 December 2025 underground event at Fosterville. The chair said at the 23 October 2026 AGM that investigations were ongoing. The issuer reported FY2026 TRIFR 1.98 versus 2.99 in FY2025; this metric does not offset the fatality.

Attribution: Employer context; no individual link established. The issuer says he became group HSSEQT head in December 2025 but the day is unconfirmed; role overlap with the 5 December fatality and personal responsibility are not established.

Relevance: Material to oversight of workplace safety.

Underground mine event (5 December 2025 company statement); FY2026 AGM transcript (chair remarks on Fosterville and ongoing investigation); Annual Report FY2026 (physical PDF p.18 CEO safety and FY2026 rates)

Suitability for the current role

Role-relevant professional experience

Through 2026-10-31 · analyst inference · low materiality

As an analytical inference, the reported experience is relevant to executive general manager hsseqt: Joined Decmil in June 2019; joined Macmahon on its 2024 acquisition and became EGM HSSEQT in December 2025; previously senior safety roles at CPB. The degree of individual contribution to past company outcomes is not established.

Attribution: Responsibility not applicable. Analytical assessment based on disclosed career; it is not a finding of personal delivery or misconduct.

Relevance: Matches documented experience to the role.

Annual Report FY2026 (physical PDF p. 43, executive biography)

Evidence gaps

  • Independent verification of education, credential status, full prior-employer tenures and individual outcomes is incomplete.

  • Focused public-source screening is not a comprehensive court, regulatory, criminal, sanctions or credential check; some historical employer records and local-language sources were not reviewed.

  • The completed Fosterville investigation, cause and individual responsibilities were unavailable through the cutoff.

  • Whether his December 2025 HSSEQT appointment preceded the 5 December event has not been established.