Gresham names Spiros Giannaros as Chief Executive Officer

SOFIAH NICHOLE SALIVIO

News Editor

Gresham has appointed Spiros Giannaros as Chief Executive Officer, succeeding Mark Hepsworth, who will move to the board.

The change follows Gresham’s acquisition of S&P Global’s Enterprise Data Management business, which expanded the company’s presence among financial institutions.

Giannaros brings more than 25 years of experience in capital markets technology and enterprise software. Most recently, he served as President and Chief Executive Officer of Charles River Development and also led platform strategy for State Street Alpha.

At Charles River, he oversaw an investment management platform serving more than USD 59 trillion in assets under management and a global workforce of 2,400. Earlier in his career, he was Partner and Senior Vice President at Markit, now part of S&P Global, where he ran the Markit EDM business.

That background gives him direct experience with the enterprise data management products Gresham acquired earlier this year. Since February, he has also worked with Gresham and its owner, STG, as an Operating Advisor, contributing to product strategy and operational planning.

The appointment comes as Gresham integrates the former S&P Global unit into its wider business. The deal broadened Gresham’s reach in data management, reconciliation, control, and regulatory reporting software used by large financial firms.

STG, Gresham’s private equity owner, said Giannaros was selected for his experience in both capital markets software and the specific data management business now within Gresham. The firm has backed more than 50 companies across data, software, and analytics.

Marc Bala, Managing Director at STG, said: “We are thrilled to introduce Spiros as the new Chief Executive Officer of Gresham. Spiros is an exceptional leader with an outstanding track record of driving growth and innovation in capital markets technology businesses.

“His prior leadership of the Markit EDM business gives him exceptional familiarity with Gresham’s products, customers, and competitive position. Spiros is the right leader to drive Gresham’s next chapter of growth and product innovation.

“We would also like to thank Mark for his partnership in building Gresham into the business it is today and are pleased he will continue to support the company going forward.”

Leadership shift

Hepsworth’s move to the board provides continuity as Gresham integrates a major acquisition and reshapes its management structure. The company focuses on software and managed services for financial institutions handling large volumes of operational and regulatory data.

Gresham has built its business around enterprise data management and automation tools for the financial services sector. Customers use these systems across investment operations, controls, reconciliation, and compliance.

Giannaros said Gresham’s position in the market and STG’s backing would support its next phase under new leadership.

He said: “Gresham is extremely well positioned to leverage the power of AI within its products and services to provide greater value and expanded benefits to customers. The company occupies a crucially important position in the financial services ecosystem, delivering intelligent business processes and data automation capabilities that global institutions depend on for their critical investment and regulatory operations.

“Having delivered for customers across these segments for over 25 years and gained a deep understanding of the financial platform ecosystem, I have conviction and belief in the quality of this platform and the strength of its customer relationships.

“STG’s significant investment in accelerating our product strategy will allow us to continue to build on our market-leading position and deliver the next generation of AI-driven capabilities and products. I am excited to work with this talented team and with STG to realize that potential and deliver increased value and innovation for our customers.”

Giannaros takes charge as Gresham combines its existing product set with the acquired enterprise data management business. His earlier role running Markit EDM gives him prior knowledge of the software line, its client base, and its market position.

That familiarity may prove important as financial institutions continue reviewing the systems they use to manage data quality, reporting, and operational controls. Gresham is now placing a long-time capital markets software executive at the center of its next stage.