Jonathan Stammelman is the Chief Financial Officer of StoneCastle Partners. Jon joined the firm in 2011 as Controller, where he led a centralized financial reporting function supporting all of StoneCastle's subsidiaries, enabling each subsidiary to operate without maintaining a dedicated controller function. Jon partners with senior management to develop and monitor key performance indicators (KPIs) across the various business units, providing the financial visibility needed to support informed decision-making at the executive level.

Jonathan is a licensed CPA and holds Series 7, 24, and 27 securities registrations.