Leadership & Governance
Our Team at SOSNA Exchange
Sosna Gems Investments Inc. operates through a structured leadership, operations and specialist model supporting sourcing, compliance, gemology and global client execution.
Executive Leadership
All three principals operate as co-founders. Functional scope differs by executive responsibility while governance remains aligned at board level.
Martin Sosna
Co-Founder & Chief Executive Officer (CEO)
Member of the Board of Directors
Responsible for overall strategic direction, capital stewardship and executive leadership across Sosna Gems Investments Inc.
Lucia Sosna
Co-Founder, Chief Commercial & Creative Officer (CCO)
Member of the Board of Directors
Leads global commercial strategy, brand positioning and development of high-trust gemstone programs across international markets.
Lenka Macurová
Co-Founder & Chief Financial Officer (CFO)
Member of the Board of Directors
Responsible for financial strategy, capital oversight and financial governance across the company.
Sourcing & Asset Strategy
Responsible for sourcing strategy, market execution and structured asset planning across global gemstone channels.
Nicholas Hartwell
Head of Sourcing Strategy
Leads sourcing strategy formulation, deployment frameworks and portfolio planning across global gemstone channels.
Mikhail Volkov
Director of Asset Sourcing
Responsible for sourcing high-value gemstones through institutional supply relationships and primary market channels.
Daniel Reinhardt
Structuring Director
Oversees transaction structuring, program design and execution standards across cross-border mandates.
Legal, Compliance & Institutional Relations
Legal oversight, jurisdictional compliance and institutional communications across operating regions.
Sophie Laurent
Head of Legal & Compliance
Responsible for legal oversight, regulatory alignment and compliance frameworks across operating jurisdictions.
Anna Kowalski
Institutional Relations Manager
Manages institutional communications, reporting standards and long-term relationship governance.
Operations & Administration
Internal coordination, documentation control and administrative continuity across company functions.
Petr Šástinský
Head of Operations
Oversees internal operational processes, administrative coordination and execution of company-wide procedures.
Alexandra Weiss
Administrative Coordinator
Responsible for documentation control, internal records and administrative support across jurisdictions.
Tereza Laskavá
Client Administration
Handles client onboarding documentation and administrative continuity for institutional relationships.
Global Sales & Expansion
Market expansion, partnership development and regional relationship coverage across the United States, Middle East and Europe.
Jason Whitfield
Regional Director — North America
Leads market expansion, partnership development and distribution coverage across the United States and Canada.
Khalid Al-Mansoori
Regional Director — Middle East
Responsible for institutional partnerships and market execution across the GCC region from Dubai DMCC.
Elisa Marchetti
Regional Director — Europe
Oversees European market coverage, partnership development and client onboarding across regulated jurisdictions.
Gemology & Certification
Gemstone quality review, gemological evaluation, certification coordination and provenance control.
Amira Hassan
Chief Gemologist
Responsible for gemstone evaluation, gemological standards and quality verification across curated inventory.
Isabella Romano
Certification & Verification Lead
Coordinates certification review, provenance verification and supply-chain documentation for high-value gemstones.
Client & Institutional Support
Client onboarding, service coordination and relationship continuity across institutional and trade accounts.
Emily Carter
Head of Client Concierge
Leads institutional onboarding, service coordination and end-to-end client lifecycle management.
Tereza Nováková
Institutional Support Coordinator
Coordinates client inquiries, documentation flow and operational communication across active relationships.
Public wording note
This page presents leadership, operations and specialist functions of Sosna Gems Investments Inc. and SOSNA Exchange using public, non-regulated operating language. SOSNA Exchange is a platform operator and does not provide investment advice, brokerage, escrow or regulated financial services.