Meet Our Leadership Team

Chief Executive Officer, Director
Geary Stonesifer
Geary brings 20 years of investment banking experience with Alex Brown, Deutsche Bank, and J.P. Morgan, specializing in equity originations and institutional equities. He led a multi- industry Belizean company's turnaround from 2010- 2014, spanning beverages, shipping, retail and food. Today, he owns Mrs. Peters Food Company, a national player in retail smoked seafood. Stonesifer holds a BA from Duke University, an MBA from Tulane University and an MSc in Biotechnology from Johns Hopkins University.

Co-Founder, Vice President
Sterling Griffin
Sterling, has over 37 years in the real estate, industry. He has been a principal in several companies and has participated in residential development, construction, syndication and sales. Sterling founded Harbor Custom Development, Inc. in 2014 and led it to a successful Nasdaq IPO in 2020. As CEO, he oversaw HCD's growth, raising $122.2 million and acquiring real estate assets across Washington, Texas, California, and Florida, resulting in over $225 million in sales.
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Chief Technology Officer
Jodi Usama Husain
Jodi, CTO and co-founder of Aryze is a technology leader with expertise in IT, business development, and financial innovation. He has driven the creation of compliant, asset-backed stablecoins and Aryze's Stablecoin-as-a-Service platform, merging blockchain with traditional finance. Previously, at ParsePort, he led financial reporting and data solutions across Europe. Jodi specializes in scalable, innovative solutions that enhance financial inclusion.
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Chief Financial Officer, Director
Richard Schmidtke
​Rich, founder of Schmidtke & Associates, PLLC, has over 30 years of public accounting experience, offering valuable insights to small and mid-market companies across industries like tax planning, real estate, technology, retail, and manufacturing. He specializes in helping start-ups build strong foundations, from capital formation to executive hiring and business plan implementation, and has helped raise over $25 million for them.
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Chief Strategy Officer​
Jack Nikogosian
Jack is a Danish blockchain innovator with over a decade of fintech and cryptocurrency experience. As the founder of Aryzein, he focuses on compliant, asset-backed stablecoins and bridging crypto and fiat. Previously, he led Coinify's Innovation Lab, pioneering blockchain payment solutions. A Forbes 30 Under 30 Europe honoree and one of Berlingske's Top 100 Talents, Jack is a sought-after speaker at global events like PAY360 and the Malta Blockchain Awards.
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VP of Investor Relations, Director
Anthony Deleonardo
Anthony is currently a Managing partner and Head of Underwriting at Corporate Capital Solutions since 2018. Anthony was instrumental in securing a 200 million loan origination line of credit for the company in 2023. He has underwritten and originated over 300 million dollars in loans during his tenure at CCS. Prior to CCS Anthony worked at various financial & Global boutique consulting firms in NYC & Dubai. Anthony received a BS in Business Finance from Stockton University and is an active volunteer at his church in Miami, FL.​

Co-Founder
Kirk St Johns
Kirk is a pioneer in the crypto space and has been an early-stage adopter and keynote speaker since 2014. His 25 years of technology innovation include developing some of the earliest commercially viable e-commerce marketplaces. He was the founder and CEO of Medtech National Inc., where he led one of the first deployments of a cloud-based HIPAA-compliant electronic health record system (EHR) In the US. At Medtech, Kirk purchased multiple billing companies in a rollup strategy, ultimately selling the company in 2016.

Co-Founder, Director
Sebastian Serrell-Watts
Sebastian, a seasoned c-suite executive, has diverse experience across film, media, and finance, including Merrill Lynch. He executed a successful reverse merger, launching a publicly traded veterinary oncology firm, where he served as EVP and board member. Currently, he's the COO at Diva Pharmaceuticals, focusing on international sales of OTC, Rx & medical device products. He also serves as COO of associated company, Regulatory Compliance Solutions, providing regulatory compliance to the pharmaceutical industry.

EU Technology + Information Officer
Evgeni Mitkov
Evgeni boasts 25 years of capital markets expertise, including a decade in blockchain and cryptocurrency innovation. He pioneered FX options trading systems, introduced the first FX option ECN and expanded the interbank FX option market to the buy-side. Evgeni facilitated the first live CDBC cross-border transactions, conducted ICO launches, developed multiple blockchain systems and advised governments in Europe, Africa and Asia on blockchain strategies.
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Director
Rob Good
Since 2017, Rob has been a crypto enthusiast and investor. He is also the founder of The Good Group, a boutique commercial real estate brokerage and advisory firm with 21 years in business and offices in South Florida and Atlanta. Prior to founding The Good Group, Rob previously served in leadership roles for a large multinational, publicly traded, professional services firm for the natural and built assets, a regional southwest land development consulting company, and national planning and design consulting firm.
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Government Liaison
Kwanza Hall
Hall, a former U.S. Representative for Georgia’s 5th district, has 15 years of leadership on the Atlanta City Council and School Board, focusing on economic inclusion, workforce development, and urban design. Honored by the W.K. Kellogg Foundation and named among the 100 Most Influential Atlantans, he now serves as Vice Chairman of the Development Authority of Fulton County, driving public-private partnerships for economic growth.
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Director
Robert Anderson
Robert is the co-founder and Managing Broker of Tortoise Realty Group. His fintech and real estate journey began with 18 years at Achieve, a software company he co-founded. Robert developed a multi-language, multi-currency payment platform that processed over $100 million in transactions, integrating fintech solutions for clients like NIKE and Major League Baseball. He leveraged his fintech expertise to develop a global event management and payment platform for JPMorgan Chase.
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Director
Gary Sahni
Gary Sahni is the owner and CEO of Sahni Enterprises, In., a $40 million, multi-industry corporation with operations spanning the United States and Europe, encompassing manufacturing, importation, distribution of wholesale goods, real estate, and restaurants. Honored with the Great British Entrepreneur Award, Gary’s initial company was recognized for its achievements by INC and Forbes Magazine as the leading wholesale company and among Georgia's fastest-growing companies. Sahni Enterprises' global presence extends to India and China and participates in trade shows worldwide.
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Advisory Board
Mary-Frances Coleman
Mary Frances Coleman is a respected business leader and attorney with over 30 years of experience in real estate, finance, and corporate law. She speaks nationally on topics like fraud, ethics, corporate structures, public offerings, and dispute resolution. As the Founder and CEO of SPOT On Strategic, she advises businesses on improving operations and achieving strategic success. As COO of Blimp Homes, she helped develop the company's crypto infrastructure, including NFTs, tokens, and a DAO. Additionally, her company, the Organization of Service Professionals, helps licensed professionals implement service and financial plans for success.
Discover how Solum Global is revolutionizing revenue cycle management and electronic payments in the U.S. healthcare sector with a fully decentralized, permissionless blockchain protocol that provides a seamless solution integrating artificial intelligence (AI) and smart contracts and Solum Global’s stablecoin (sgUSD), and its proprietary electronic health wallet (EHW). Contact us to learn more about Solum’s groundbreaking technology and how you can get involved.