Maner Costerisan Recognizes Leadership Growth with Manager-Level Promotions 

Maner Costerisan has announced 15 manager-level promotions elevating four team members to senior manager and 11 to manager across multiple departments, underscoring the firm’s commitment to developing and advancing talent from within. 

“These promotions reflect the strength of our team and the leadership taking shape across the firm,” said Trey Williams, CPA, president of Maner Costerisan. “Our people are our greatest asset, and these advancements demonstrate our commitment to recognizing talent, investing in professional growth and creating long-term opportunities for our team to build meaningful careers at Maner Costerisan.” 

Senior Manager Promotions 

Ryan Babiak, CPA

Ryan has been promoted from manager to senior manager in the audit department. Babiak joined Maner Costerisan in 2025 and brings more than 10 years of accounting experience, primarily serving nonprofit and health care organizations. He is a regular presenter of Maner’s nonprofit webinars. A graduate of Aquinas College with a bachelor’s degree in professional accountancy, he resides in Caledonia, Michigan. 

Scott Ebert, CPA

Scott, a DeWitt resident, has been promoted from manager to senior manager in the audit department. Ebert rejoined Maner Costerisan in 2025 after previously working at the firm from 2017 to 2021. He has more than eight years of experience in accounting and finance and most recently served as a senior financial analyst for a global manufacturer. At Maner, he focuses on assurance engagements in the affordable housing and education sectors. He earned both his bachelor’s and master’s degrees in accounting from Michigan State University. 

The senior manager promotions include the following two professionals who joined Maner Costerisan through the firm’s January 2026 merger with Baker Holtz in Grand Rapids. 

Seth Hanenburg, CPA

Seth has been promoted to senior manager in the accounting department. He brings 11 years of accounting experience. Hanenburg earned his CPA license in 2020 and holds both a bachelor’s and a master’s degree in accounting from Davenport University. He resides in Byron Center. 

Lauren Kurtz, CPA

Lauren has been promoted to senior manager in the tax department. She brings 10 years of tax experience, supporting clients with a wide range of tax planning and compliance needs. Kurtz is a graduate of Aquinas College, where she earned a bachelor’s degree in professional accountancy. She resides in Rockford. 

Manager Promotions 

Eleven additional team members were promoted to manager across several departments. 

Audit Department

These team members support Maner Costerisan’s audit and assurance services, helping clients navigate evolving regulations, compliance requirements and complex financial reporting needs: 

• Ryan Freemire, CPA, Holt resident; bachelor’s and master’s degrees in accounting, Michigan State University in East Lansing. 
• Kevin Jang, CPA, Kentwood resident; bachelor’s and master’s degrees in accounting, Calvin University in Grand Rapids; master’s degree in business analytics, Saint Peter’s University in Jersey City, New Jersey. 
• Tom Jury, CPA, St. Johns resident; bachelor’s degree in accounting and finance, minor in business information systems, Central Michigan University in Mount Pleasant. 
• Gabe Seng, CPA, CGFM®, Grand Rapids resident; bachelor’s degree in accounting and master’s degree in accountancy, both from Calvin University in Grand Rapids. 
• Matt Spinner, CPA, Williamston resident; bachelor’s degree in history, Dalhousie University in Halifax, Nova Scotia; master’s degree in accounting, Michigan State University in East Lansing. 

Tax Department

These professionals strengthen the firm’s proactive tax planning and compliance services, helping business and individual clients stay ahead of an ever-changing tax landscape: 

• Alexis Balkema, CPA, Sparta resident; bachelor’s degree in accounting, Grand Valley State University in Grand Rapids. 
• Tyler Harris, NPCC, Lansing resident; bachelor’s degree in accounting, Davenport University in Lansing. 
• Ashley Ristic, CPA, Clinton Township resident; bachelor’s degree in accounting and finance, Grand Valley State University in Allendale. 

Accounting and Outsourced Solutions Department

These team members provide scalable, client-focused support for clients who need to fill a temporary void or a more permanent solution. 

• Amy Broers, CPA, Lansing resident; bachelor’s degree in professional accountancy, Saginaw Valley State University in Saginaw. 
• Hannah Knott, CPA, Wayland resident;  bachelor’s degree in accounting from Grand Valley State University in Grand Rapids. 
• Tori Waller, NFP, St. Johns resident; bachelor’s degree in accounting and management information systems, Northwood University in Midland. 

About Maner Costerisan 

Maner Costerisan is a full-service public accounting and business consulting firm founded in 1906 and based in Lansing, Michigan. With 120 years of experience and offices in Lansing and Grand Rapids, the firm provides a comprehensive range of services, including audit and assurance, tax planning and preparation, business consulting, technology solutions, and wealth management. The firm is nationally recognized including being named a Best Firm to Work For, Best Firm for Young Accountants, Best of the Best Firms, and a Top Firm to Watch, among other accolades.

Maner Costerisan is dedicated to helping clients achieve their financial goals through innovative solutions, personalized service, and a commitment to excellence. The firm serves a diverse clientele across various industries, including manufacturing, nonprofit, government, health care, construction, and education. Contact us today to learn more.