"Specialized Diesel Supply. Proven Trading Structure. Reliable Delivery."
Proven. Powerful. Transaction-Driven. Visionshark Oil & Gas is a trusted force in the global energy market with over 20 years of proven execution.
Giovanni Halman CEO
Is a former professional tennis player turned oil and gas executive with over 12 years of industry experience. Known for discipline, precision, and execution, he made a defining breakthrough in 2016 alongside industry leader Cynthia B. Metzger. A proven entrepreneur, Giovanni previously built and scaled a successful tennis academy and later expanded into real estate investment with Rau Development. His leadership is driven by the competitive mindset of an elite athlete relentless, results-focused, and uncompromising in performance.
Cynthia B Metzger President
Is a cornerstone of Visionshark Consulting and a driving force behind its market position. Her leadership has secured direct relationships with buyers and unlocked direct access to refinery partners through consistent execution and unwavering commitment. Respected for her integrity, professionalism, and results-driven approach, Cynthia has played a critical role in building the trust, credibility, and strategic partnerships that define Visionshark today.
Jacob Verghese
Managing Director
Energy Trading
With over 20 years of experience in the oil and gas sector, he brings a comprehensive background spanning drilling operations, global energy trade desks, and strategic advisory services to established petroleum companies.
Beginning in the drilling industry, he developed deep operational insight into upstream production and field economics before transitioning into international energy trading, where he executed and structured physical petroleum transactions across global markets. His experience includes crude oil, refined products, term contracts, and spot transactions, supported by disciplined risk management and strong industry relationships.
He has also served as a strategic consultant to recognized oil and gas firms, advising on trading operations, procurement strategy, and supply chain optimization.
He currently serves as Managing Director of Visionshark Consulting LLC and US Global Fuel Supply Co LLC, where he leads international energy trading strategy, structured petroleum transactions, and advisory engagements across global markets.
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Jjjo
Executive Trade Division
Jijo Rajan serves as an Executive of the Trade Desk Division for US Global Fuel Supply Co LLC and Visionshark Consulting LLC. In addition to his leadership role within the organization, Dr. Rajan holds an impressive M.D. degree and brings a unique level of analytical discipline and strategic thinking to the company’s global trading operations.
Working closely alongside CEO Giovanni Halman and Vice President Cynthia Metzger, Jijo has played a critical role in the company’s growth and strategic development. One of his most significant contributions has been helping to bring Managing Director of Energy Trading Jacob Verghese into the organization.
Together, Jijo Rajan and Jacob Verghese have been instrumental in establishing a powerful partnership between US Global Fuel Supply and Visionshark Consulting and their established Trade Desk operations, which have been successfully active in the global energy market for over a decade. Their combined expertise and industry relationships have strengthened the company’s trading capabilities and expanded its reach within international fuel markets.
Samuel Nicholas
Director and Head of Consultant Department
OFFICIAL MANDATE ID
VS-UGF-DIR-SN-001
Authority:
Samuel Nicholas is fully authorized to:
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Engage directly with verified buyers, sellers, and official mandates.
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Conduct confidential client due diligence for onboarding and transactions.
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Oversee and execute high-value fuel transactions with full operational authority.
Institutional Role:
As Director of both operational and consulting divisions, Samuel Nicholas represents Visionshark Consulting LLC with discretion, authority, and full executive mandate in global energy markets.
Authorized Signatory:
Giovanni Halman – Executive Officer
Lilay Asghedom
Consultant & Official Mandate
OFFICIAL MANDATE ID
VS-UGF-CON-LA-002
Credential Holder:
Official Designation:
Lilay Asghedom is appointed as an authorized Consultant and Official Mandate of Visionshark Consulting LLC, entrusted to represent the company in approved commercial engagements within its fuel trading and consulting operations.
Authorized Responsibilities:
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Engagement and communication with verified buyers, sellers, and authorized intermediaries.
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Support of transaction coordination, client onboarding, and institutional workflow processes.
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Collection, verification, and secure handling of confidential client documentation for due diligence and compliance review.
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Representation of Visionshark Consulting LLC within designated negotiations and advisory interactions.
Institutional Capacity:
Operating under executive authorization, Lilay Asghedom serves as a recognized representative supporting strategic partnerships, transactional communications, and compliance-driven onboarding within the global energy market framework.
Authorized Signatory:
Giovanni Halman – Executive Officer
Nikita Chepinoga
Consutlant & Official Mandate
OFFICIAL MANDATE ID
VS-UGF-CON-NC-003
Mandate Scope:
Nikita Cepinoga is officially designated as a Consultant and Authorized Mandate of Visionshark Consulting LLC, granted authority to represent the organization in matters related to its fuel trading activities, strategic consulting services, and approved commercial operations.
Authorized Responsibilities:
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Acting as an institutional liaison with verified buyers, legitimate sellers, and recognized principal mandates.
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Supporting transaction development through structured communications, coordination, and operational alignment between participating parties.
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Managing the intake, review, and secure handling of confidential documentation required for compliance, onboarding, and due diligence procedures.
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Representing Visionshark Consulting LLC within authorized negotiations, advisory roles, and sanctioned business engagements.
Institutional Positioning:
Operating under executive authorization, Nikita Cepinoga functions as a consultant-level mandate entrusted with facilitating transaction support, maintaining procedural integrity, and assisting with client qualification within the company’s international energy and commodities operations.
Authorized Signatory:
Giovanni Halman – Executive Officer
Tiffany Garcia
Consutlant & Official Mandate
OFFICIAL MANDATE ID
USGF-VS-MID-005
Mandate Scope:
Tiffany Garcia serves as a Consultant and Authorized Mandate for Visionshark Consulting LLC, supporting the firm’s fuel trading operations and strategic consulting activities. Based in Texas, she transitioned into the energy sector after building her professional foundation in the medical field, where she developed strong discipline, attention to detail, and a commitment to operational excellence.
In her current role, Garcia acts as a liaison between verified buyers, legitimate sellers, and principal mandates, assisting in the coordination and development of structured fuel transactions. She supports client onboarding, documentation review, and due-diligence procedures while helping maintain clear communication and alignment between participating parties.
Recognized for her outstanding work ethic and reliability, Garcia contributes to maintaining the firm’s standards of professionalism, compliance, and procedural integrity within its international energy and commodities operations.
Authorized Signatory:
Giovanni Halman – Executive Officer
