Eckert Seamans Names Mark A. Peterson as Firmwide Chief Operating Officer
December 8, 2025
Eckert Seamans is pleased to announce the appointment of Mark A. Peterson as its firmwide Chief Operating Officer, effective December 8, 2025. In this expanded leadership capacity, Peterson will assume responsibility for overseeing all business operations while also continuing to serve as Chief Financial Officer. He will collaborate closely with the firm’s Executive Committee and Board of Directors, and partner with C-suite executives and senior business professionals to drive the development and execution of the firm’s strategic business plan.
Since joining the firm in 2024, Peterson has significantly advanced firmwide finance, pricing, and analytical capabilities. He partners with lawyers to enhance their understanding of client relationships and implement strategies for delivering value. Additionally, he collaborates closely with firmwide business professionals to promote cross-functional teamwork and drive firmwide initiatives.
“Mark’s leadership and strategic vision have been instrumental in positioning our firm for success,” said Scott Cessar, Chief Executive Officer of Eckert Seamans. “We are pleased for him to move into the expanded COO/CFO role, where he will drive operational excellence and continue supporting our long-term growth initiatives.”
Peterson has over 20 years of experience in financial, analytical, and technology-driven initiatives within the legal industry, having held leadership roles at Am Law 200 firms. He directs Eckert Seamans’ comprehensive financial strategy and operations of the firm, encompassing financial reporting, analytics, cash management, budgeting, billing and collections, internal controls, audits, and tax compliance.
Before entering the legal sector, Peterson managed budgeting and operations for two private companies. He holds a B.S. from The Pennsylvania State University and an MBA from Robert Morris University.