# Tim Williams

Chief Development Officer

## Career chronology

- **Earlier career; exact dates not established: Prior employers as stated in official or reviewed professional profile** — Senior/COO roles with Rio Alto, Rio2 and Marathon Gold; profile says he led development of multiple gold mines from concept to operation.. [Board and Management](<https://tesorogold.com.au/board-and-management/>) (Tim Williams profile; career/role section)

- **Appointed July 2020; replacement COO effective 1 October 2023; planned consulting thereafter: Marathon Gold Corporation** — Chief Operating Officer. [Marathon Gold appoints Tim Williams chief operating officer](<https://www.globenewswire.com/news-release/2020/07/08/2059183/0/en/marathon-gold-announces-appointment-of-tim-williams-as-chief-operating-officer.html>) (appointment announcement, July 2020); [Marathon Gold announces management appointments](<https://markets.financialcontent.com/prnews.pre/article/gnwcq-2023-9-13-marathon-gold-announces-management-appointments>) (management announcement, 13 September 2023)

## Education and qualifications

### Education and professional credentials [tim_williams_education]

Credential history; dates not disclosed in reviewed source · issuer reported · low materiality

BEng Science in Mine Geology; Graduate Diploma Mining Engineering; master’s in Mining Geomechanics, WASM/Curtin.

**Attribution:** Individual involvement documented. The profile identifies the stated qualifications; graduation dates and independent register verification were not located.

**Relevance:** Relevant to the technical, finance or governance responsibilities described in the current role.

[Board and Management](<https://tesorogold.com.au/board-and-management/>) (Tim Williams profile; career/role section)

## Personal achievements

### Relevant professional experience [tim_williams_career_record]

Earlier career; exact dates not established in reviewed profile · issuer reported · medium materiality

Senior/COO roles with Rio Alto, Rio2 and Marathon Gold; profile says he led development of multiple gold mines from concept to operation.

**Attribution:** Individual involvement documented. The cited profile describes the person’s roles and involvement; outcome attribution is limited to what it explicitly states.

**Relevance:** Provides role-relevant experience; profile claims are issuer-reported and not a substitute for independent delivery evidence.

[Board and Management](<https://tesorogold.com.au/board-and-management/>) (Tim Williams profile; career/role section)

## Contributions and company outcomes

### Valentine development and later first gold [williams_valentine_timeline]

2020–September 2025 · documented · medium materiality

Marathon appointed Williams COO in 2020 and announced a replacement effective 1 October 2023, while saying he would provide consulting support. Equinox reported Valentine’s first gold on 14 September 2025.

**Attribution:** Role overlaps event; causation unproven. Williams held the COO role during early project development; the reported first pour occurred after his replacement. The duration of subsequent consulting and his individual contribution to that milestone are unverified.

**Relevance:** A dated project-development track record provides context for his current development role.

[Marathon Gold appoints Tim Williams chief operating officer](<https://www.globenewswire.com/news-release/2020/07/08/2059183/0/en/marathon-gold-announces-appointment-of-tim-williams-as-chief-operating-officer.html>) (appointment announcement); [Marathon Gold announces management appointments](<https://markets.financialcontent.com/prnews.pre/article/gnwcq-2023-9-13-marathon-gold-announces-management-appointments>) (management appointment and planned consulting); [Equinox Gold delivers first gold at Valentine](<https://www.equinoxgold.com/news/equinox-gold-delivers-first-gold-at-its-valentine-gold-mine-in-newfoundland-and-labrador-canada/>) (first gold announcement, 15 September 2025)

## Suitability for the current role

### Role fit and evidence limits [tim_williams_role_fit]

Assessment at cutoff 2026-10-31 · analyst inference · medium materiality

The issuer-reported career has potential relevance to the current role; prior outcomes and individual contribution need independent verification.

**Attribution:** Responsibility not applicable. This is an analytical inference from the cited career profile and the company’s stated stage; it does not claim personal causation of company outcomes.

**Relevance:** Connects prior experience to the role’s execution and oversight needs.

[Board and Management](<https://tesorogold.com.au/board-and-management/>) (Tim Williams profile; career/role section)

## Evidence gaps

- This is partial screening; independent career, qualifications, former-employer, legal, safety, fraud, environmental and governance checks remain incomplete.

- Exact role dates and cutoff continuity need dated corroboration.

- Valentine consulting duration, individual contribution to the 2025 first gold, and project outcomes during his exact tenure remain unverified.