Southern Energy, Landmark, and Kerr County credit unions announce new chief executives, each bringing deep experience and fresh vision to serve their expanding member bases.

In a wave of leadership changes across the credit union industry, three institutions—ranging from a $159 million local cooperative to a $7.1 billion regional giant—have each appointed new chief executive officers this October, marking a significant shift in strategic direction and generational leadership.

At Southern Energy Credit Union, headquartered in Birmingham, Alabama, Andy Rush officially assumed the role of President and CEO on October 1, following a planned transition announced earlier this year.

Rush, who has spent 23 years at the now $3.6 billion-asset credit union, previously served as Vice President and Chief Operating Officer. He succeeds Derrick Ragland, who led the institution through nearly a decade of expansion and strategic mergers.

Under Ragland’s tenure, Southern Energy merged with Powerco Federal Credit Union and Mutual Savings Credit Union, rebranding from APCO Employees Credit Union in February 2025 and broadening its footprint across Alabama, Georgia, and Mississippi.

“It’s a privilege to serve our members in this new capacity,” Rush said, emphasizing a focus on innovation while maintaining the credit union’s core values of trust and service. Board Chair Greg Shipp praised Rush’s institutional knowledge and leadership through complex transitions that have grown Southern Energy to serve more than 90,000 members.

In Brookfield, Wisconsin, the board of Landmark Credit Union named Timothy Mackay as its new President and CEO, effective October 13.

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Mackay brings more than 30 years of financial services experience, most recently at First Merchants Bank, where he was President of Mortgage Banking and Bank Operations. His appointment follows a nationwide search led by executive recruitment firm Korn Ferry and the planned retirement of longtime CEO Jay Magulski, who served Landmark for 23 years—12 of those as its chief executive.

With $7.1 billion in assets and more than 400,000 members, Landmark is one of the largest credit unions in the Midwest. Board Chair Brian Dorow cited Mackay’s blend of strategic acumen and people-first leadership as key to guiding the credit union into its next phase of digital innovation and member service.

At the smaller but deeply rooted Kerr County Federal Credit Union in Texas, Angela Hill took over as CEO on October 1, succeeding Sandy Lumbley, who will remain in a consulting role through year’s end.

Hill began her career at the credit union three decades ago as a drive-thru teller and has held a variety of positions leading up to her promotion. Lumbley retires after transforming the credit union from a single-branch, $7 million-asset operation to a four-branch institution with $159 million in assets and nearly 14,000 members.

Her leadership, grounded in community ties and financial stewardship, leaves a legacy that Hill says she is “honored to continue.”

“As we enter this next chapter together, my promise is simple: to uphold the values of trust, service, and connection that have defined our legacy, while exploring new ways to grow, enhance our members’ experience, and support their financial journey.”

– Andy Rush
New President & CEO
Southern Energy Credit Union