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2026-11-06
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Solstice Minerals Limited

Resource Stage · Copper · Gold · Australia Rating locked: sign in to view v8 · sls-20261009t154057-first-fill
Last 2026-11-06
A$1.89
1D
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1M
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YTD
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1Y
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Upside
Locked: sign in to view
Mkt cap
A$326.3M
EV
A$281.1M
Cash
A$45.3M
Debt
A$0
2 newer ASX announcements not yet reflected in this valuation

People, delivery and responsibility

Management background checks

Evidence through 2026-10-31

Research assessment

Executive team

Rating locked: sign in to viewTeam rating and score are available to subscribers

Partial public-source management screening. Dated issuer evidence identifies four leaders and selected company milestones. Person-specific prior-employer, governance, safety, environmental, litigation and credential checks remain incomplete; this is not a clearance.

Decision-relevant facts

Material summary

Individual involvement and employer context shown separately

Nick Castleden

Managing Director / Chief Executive Officer

Current
Company SuccessIssuer Reported · High materiality

Apollo’s Rebecca resource and 2021 acquisition

Apollo’s 2021 annual report names Castleden managing director and reports an April 2021 Lake Rebecca mineral resource update of 29.1Mt at 1.2g/t for 1.105Moz. Solstice reports that Apollo acquired and delineated Rebecca during his tenure. Apollo disclosed Ramelius held 74.01% on 26 November 2021; Ramelius reports it obtained 100% control on 17 December 2021. These are company-level milestones and do not isolate Castleden’s individual contribution or establish a shareholder return.

Role overlaps event; causation unproven · Managing-director role and company milestones overlap; the sources do not isolate his personal contribution or attribute project outcomes to him.

Apollo Consolidated 2021 annual report · Printed pp.1 and 6–7: managing director and Lake Rebecca resource update.
2026 Annual Report · Printed p.31 Castleden biography.
Update on Ramelius takeover offer · p.1 relevant interest and independent-director statement.
2022 Annual Report · Key operational highlights, acquisition of the Rebecca Gold Project.
Company SuccessIssuer Reported · High materiality

Nanadie exploration and funding progressed

Solstice’s September 2026 quarterly reports ongoing Nanadie drilling outside the existing 40.4Mt resource boundary and cash of A$41.3m with no debt. Its 2026 annual report describes an A$32.6m gross institutional placement and calls Nanadie an exploration discovery. These are company-reported results, not an updated resource, completed feasibility study, or operating mine.

Role overlaps event; causation unproven · CEO oversight overlaps these reported activities; specific personal contribution is not isolated.

September 2026 Quarterly Activities Report · p.1 quarterly highlights and cash.
2026 Annual Report · Printed pp.4 and 33, chair and financial position.
Evidence gaps · 3
  • The chair and CEO source establishes Apollo tenure by year, but exact Apollo dates, individual technical contribution, independent qualifications and later corporate records remain unverified.
  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.
  • Independent educational and membership verification was not completed.

Full background report

Nick Castleden

Managing Director / Chief Executive Officer

Career chronology

  • Since 24 January 2023: Solstice Minerals — Managing Director and CEO. 2026 Annual Report (Printed p.31, appointment and director biography.)

  • 2010–2021; precise start/end not established: Apollo Consolidated — Managing Director. 2026 Annual Report (Printed p.31, Castleden biography.)

Contributions and company outcomes

Apollo’s Rebecca resource and 2021 acquisition

2010–2021 · issuer reported · high materiality

Apollo’s 2021 annual report names Castleden managing director and reports an April 2021 Lake Rebecca mineral resource update of 29.1Mt at 1.2g/t for 1.105Moz. Solstice reports that Apollo acquired and delineated Rebecca during his tenure. Apollo disclosed Ramelius held 74.01% on 26 November 2021; Ramelius reports it obtained 100% control on 17 December 2021. These are company-level milestones and do not isolate Castleden’s individual contribution or establish a shareholder return.

Attribution: Role overlaps event; causation unproven. Managing-director role and company milestones overlap; the sources do not isolate his personal contribution or attribute project outcomes to him.

Relevance: Relevant experience for an explorer, without proving mine delivery.

Apollo Consolidated 2021 annual report (Printed pp.1 and 6–7: managing director and Lake Rebecca resource update.); 2026 Annual Report (Printed p.31 Castleden biography.); Update on Ramelius takeover offer (p.1 relevant interest and independent-director statement.); 2022 Annual Report (Key operational highlights, acquisition of the Rebecca Gold Project.)

Nanadie exploration and funding progressed

FY2026 and quarter ended 30 September 2026 · issuer reported · high materiality

Solstice’s September 2026 quarterly reports ongoing Nanadie drilling outside the existing 40.4Mt resource boundary and cash of A$41.3m with no debt. Its 2026 annual report describes an A$32.6m gross institutional placement and calls Nanadie an exploration discovery. These are company-reported results, not an updated resource, completed feasibility study, or operating mine.

Attribution: Role overlaps event; causation unproven. CEO oversight overlaps these reported activities; specific personal contribution is not isolated.

Relevance: Funding and exploration progress matter to the company’s current stage.

September 2026 Quarterly Activities Report (p.1 quarterly highlights and cash.); 2026 Annual Report (Printed pp.4 and 33, chair and financial position.)

Evidence gaps

  • The chair and CEO source establishes Apollo tenure by year, but exact Apollo dates, individual technical contribution, independent qualifications and later corporate records remain unverified.

  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.

  • Independent educational and membership verification was not completed.

Silfia Morton

Chief Financial Officer / Joint Company Secretary

Current
Role FitAnalyst Inference · Medium materiality

Accounting experience and concurrent appointments

Solstice reports B.Com, M.Com and CA and 12 years in senior audit management. A separate Kali Metals announcement says Morton was its CFO when appointed company secretary in August 2025. Charger disclosed her CFO resignation effective 2 November 2025. These issuer descriptions and office dates do not independently verify her qualifications or establish her personal contribution to company outcomes.

Responsibility not applicable · Issuer-reported roles and credentials support this limited role-fit inference; actual audit outcomes are not isolated.

2026 Annual Report · Printed p.32, Morton biography.
Change of Company Secretary · p.1, 1 August appointment and CFO role.
Director and executive changes · p.2, CFO resignation date.
Evidence gaps · 3
  • Exact role continuity at Kali and other listed entities through cutoff was not established; concurrent appointments may affect capacity, but workload and conflicts were not established.
  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.
  • Independent educational and membership verification was not completed.

Full background report

Silfia Morton

Chief Financial Officer / Joint Company Secretary

Career chronology

Suitability for the current role

Accounting experience and concurrent appointments

2023–2025 · analyst inference · medium materiality

Solstice reports B.Com, M.Com and CA and 12 years in senior audit management. A separate Kali Metals announcement says Morton was its CFO when appointed company secretary in August 2025. Charger disclosed her CFO resignation effective 2 November 2025. These issuer descriptions and office dates do not independently verify her qualifications or establish her personal contribution to company outcomes.

Attribution: Responsibility not applicable. Issuer-reported roles and credentials support this limited role-fit inference; actual audit outcomes are not isolated.

Relevance: Accounting and company-secretarial experience are relevant to reporting and governance.

2026 Annual Report (Printed p.32, Morton biography.); Change of Company Secretary (p.1, 1 August appointment and CFO role.); Director and executive changes (p.2, CFO resignation date.)

Evidence gaps

  • Exact role continuity at Kali and other listed entities through cutoff was not established; concurrent appointments may affect capacity, but workload and conflicts were not established.

  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.

  • Independent educational and membership verification was not completed.

James Doyle

Joint Company Secretary

Current
Role FitAnalyst Inference · Medium materiality

Issuer-reported secretarial and transaction experience

Solstice reports Doyle holds B.Com and a graduate diploma in applied finance and describes public-company governance and transaction experience. Sun Silver’s 2025 annual report also identifies him as company secretary. Black Rock Mining disclosed his resignation and a replacement in December 2025; an undated Sun Silver web profile still lists him at Black Rock, so the dated filing is preferred. Credentials were not independently confirmed.

Responsibility not applicable · Role and experience are issuer-reported; no particular transaction outcome is attributed to him.

2026 Annual Report · Printed p.32 secretary biography.
2025 Annual Report · Printed p.18 company secretary biography.
Appointment of Company Secretary · p.1 secretary resignation and successor appointment.
Evidence gaps · 3
  • The exact start and end dates of other secretarial roles and their workloads were not fully researched; a current web profile conflicts with the 2025 Black Rock departure filing.
  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.
  • Independent educational and membership verification was not completed.

Full background report

James Doyle

Joint Company Secretary

Career chronology

Suitability for the current role

Issuer-reported secretarial and transaction experience

2023–2026 · analyst inference · medium materiality

Solstice reports Doyle holds B.Com and a graduate diploma in applied finance and describes public-company governance and transaction experience. Sun Silver’s 2025 annual report also identifies him as company secretary. Black Rock Mining disclosed his resignation and a replacement in December 2025; an undated Sun Silver web profile still lists him at Black Rock, so the dated filing is preferred. Credentials were not independently confirmed.

Attribution: Responsibility not applicable. Role and experience are issuer-reported; no particular transaction outcome is attributed to him.

Relevance: Relevant background to listed-company secretarial work.

2026 Annual Report (Printed p.32 secretary biography.); 2025 Annual Report (Printed p.18 company secretary biography.); Appointment of Company Secretary (p.1 secretary resignation and successor appointment.)

Evidence gaps

  • The exact start and end dates of other secretarial roles and their workloads were not fully researched; a current web profile conflicts with the 2025 Black Rock departure filing.

  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.

  • Independent educational and membership verification was not completed.

Mark Alvin

Exploration Manager

Current
Role FitAnalyst Inference · Medium materiality

Exploration manager has issuer-reported geological experience

Solstice’s 2022 prospectus lists geological and exploration roles including Strandline and says Alvin received a Rio Tinto exploration award. A 2017 Strandline release identifies him as its full-time exploration manager and a competent person for the disclosed exploration results. The award and qualifications remain issuer-reported; no independent credential verification was completed.

Responsibility not applicable · The Strandline statement directly identifies his 2017 reporting role; issuer-reported award and wider career have not been independently verified.

2022 Prospectus · Printed p.56, section 5.3 senior management biography.
Quarterly Report for the period ending 31 December 2016 · Competent Person statement, exploration results.
Evidence gaps · 3
  • September 2026 issuer presentation supports his title; the undated leadership page is not alone evidence of historical tenure. Exact tenure at former employers, award basis and current employment terms remain incomplete.
  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.
  • Independent educational and membership verification was not completed.

Full background report

Mark Alvin

Exploration Manager

Career chronology

  • Issuer states from 22 April 2022; 9 September 2026 presentation names him in the role.: Solstice Minerals — Exploration Manager. Board and Management (Dr Mark Alvin biography and appointment.)

  • In role in 2017; exact start/end dates not established: Strandline Resources — Exploration Manager. Quarterly Report for the period ending 31 December 2016 (Competent Person statement; identifies Alvin as full-time employee and exploration manager.)

Suitability for the current role

Exploration manager has issuer-reported geological experience

2017–2026 · analyst inference · medium materiality

Solstice’s 2022 prospectus lists geological and exploration roles including Strandline and says Alvin received a Rio Tinto exploration award. A 2017 Strandline release identifies him as its full-time exploration manager and a competent person for the disclosed exploration results. The award and qualifications remain issuer-reported; no independent credential verification was completed.

Attribution: Responsibility not applicable. The Strandline statement directly identifies his 2017 reporting role; issuer-reported award and wider career have not been independently verified.

Relevance: Relevant technical background for current copper-gold exploration.

2022 Prospectus (Printed p.56, section 5.3 senior management biography.); Quarterly Report for the period ending 31 December 2016 (Competent Person statement, exploration results.); Investor Presentation – RRS Gold Coast Conference (p.5 management team.)

Evidence gaps

  • September 2026 issuer presentation supports his title; the undated leadership page is not alone evidence of historical tenure. Exact tenure at former employers, award basis and current employment terms remain incomplete.

  • Individual topic-by-topic searches, original regulator and court records, and complete prior-employer records were not fully researched; negative findings or clearance are not established.

  • Independent educational and membership verification was not completed.