Kelso & Company Acquires WilliamsMarston from Align Capital Partners

Align Capital Partners Invests Growth Capital in WilliamsMarston LLC

July 14, 2020

Accounting & Tax

Align Capital Partners (ACP) made a growth capital investment in WilliamsMarston LLC, an accounting advisory and management consulting firm with offices in Boston and New York. The founders Landen Williams and Jon Marston will continue to lead the firm as ACP supports expansion of sales, marketing, technology and geographic reach.

WilliamsMarston Acquires Moffett & Associates

May 25, 2022

Accounting & Tax

WilliamsMarston LLC, the Align Capital Partners-backed accounting, tax and valuation advisory firm, has acquired Moffett & Associates, a boutique corporate tax consultancy headquartered in El Segundo, California. The deal brings WilliamsMarston's headcount to 156 professionals and expands its corporate tax capabilities and West Coast presence; founder Marty Moffett and his team joined WilliamsMarston at close.

WilliamsMarston Acquires Oracle Capital

August 9, 2022

Accounting & Tax

WilliamsMarston LLC, a national accounting, tax and valuation advisory firm backed by Align Capital Partners, has acquired Tucson-based Oracle Capital LLC, a provider of complex valuation consulting services. The deal brings Oracle Capital's managing partner Rob Maxfield and his team into WilliamsMarston and expands the firm's valuation capabilities and presence in the Southwest as an add-on to its platform.

WilliamsMarston LLC Acquires BA Major Associates LLC

December 8, 2020

Accounting & Tax

WilliamsMarston LLC, a PE-backed accounting advisory and management consulting firm, acquired BA Major Associates LLC, a Boston-based corporate tax advisory firm specializing in biotechnology, pharmaceuticals, medical devices, healthcare, renewable energy and technology sectors. The deal follows Align Capital Partners’ growth capital investment in WilliamsMarston earlier this year and brings BA Major’s partners into WilliamsMarston to expand the firm’s corporate tax capabilities.

WilliamsMarston Acquires Paradigm Advisory Group

August 18, 2022

Accounting & Tax

WilliamsMarston LLC, a PE-backed accounting, tax and valuation advisory firm, has acquired Atlanta-based Paradigm Advisory Group, a boutique accounting advisory practice. The acquisition (WilliamsMarston's sixth in two years) expands WM’s Southeast presence and enhances its technical accounting and transaction advisory capabilities; Paradigm co-founders Travis Hannon and Chris Bitler and the full Paradigm team joined WilliamsMarston at close.

Kelso & Company Takes 25% Minority Stake in Wellington-Altus Financial Inc.

January 12, 2026

Financial Services

Kelso & Company closed a nearly CAD 400 million secondary minority common equity investment to acquire a 25% stake in Wellington-Altus Financial Inc., implying an enterprise value of more than CAD 1.5 billion. The transaction provides liquidity to existing advisors and employees while supporting Wellington-Altus’s continued growth as the firm surpasses 1,000 employees and CAD 45 billion in assets under administration.