Toledo, Ohio (April 10, 2023) – Locally recognized accounting and advisory firm, William Vaughan Company (WVC,) announced today that Patrick Mannion has stepped in as the Managing Director of Transaction Advisory Services (TAS), a growing service line within the Firm.

Mr. Mannion brings over 12 years of experience providing financial advisory services to clients across a range of industries. He specializes in the identification and screening of acquisition targets and is highly skilled in deal negotiation support. Before joining WVC, Mr. Mannion served as a Director in the Transaction Advisory Services practice for Marcum LLP.

“We are thrilled to welcome Patrick to our team,” says Aaron Swiggum, Managing Partner of WVC. “As our clients increasingly turn to us for guidance navigating the financial due diligence processes and the complexities of M&A transactions, it is essential for us to enhance our capabilities. Patrick’s experience and expertise in transaction advisory services will be instrumental in helping WVC continue to grow and expand our service offerings for our clients and we are confident he will be a tremendous asset to the firm.”

In this new role, Mr. Mannion will drive the creation and development of the Firm’s TAS strategy with a focus on supporting clients throughout one of the most intimate aspects of a business’s lifecycle; mergers and acquisitions. From assisting with working capital analysis and financial modeling to deal structuring and strategic planning, Mr. Mannion will oversee all aspects of the TAS practice, including business development, client service, and talent management.

“I am excited to join the William Vaughan Company team and to help bolster its Transaction Advisory Practice,” said Mr. Mannion. “I believe there is a tremendous opportunity for the firm to provide a strong, competitive advantage to its clients during the transaction process, driving greater value. I look forward to taking WVC’s service offerings to the next level.”

About William Vaughan Company (
William Vaughan Company is an Ohio-based public accounting firm providing a vast array of audit, tax, and advisory services to clients locally, nationally, and internationally. Our commitment to excellence has resulted in sustained growth since our inception in 1959. Currently, William Vaughan Company has 3 locations and more than 90 professionals, including 15 partners, who focus on serving primarily privately held businesses. For five years, the firm has been awarded one of the 60 Best Accounting Firms to Work for in the nation by Accounting Today. In addition, William Vaughan Company has been named INSIDE Public Accounting’s Best of the Best Firms for fourth consecutive years and The Blade’s Top Work Places for over nine years.

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