Natick, MA (January 7, 2025) – Mainstay Engineering Group, Inc., (“Mainstay”), a civil and structural engineering firm with a focus on life sciences, pharmaceutical, and other mission-critical industries, acquired Professional Engineering Associates (PEA), a Greenville, South Carolina-based, civil and structural engineering firm.

PEA is a long-standing and well-respected engineering firm with significant design experience in the industrial, manufacturing, healthcare, and commercial sectors with a presence in South Carolina, North Carolina, Georgia, and Texas. This strategic acquisition expands Mainstay’s geographic footprint and deepens its service capabilities, benefiting its clients, partners, and employees.

“This acquisition marks an important milestone for both companies,” said Laura Hughes, CEO of Mainstay Engineering Group, Inc. “PEA’s proven expertise with industrial and manufacturing projects complements our core strengths in the life sciences and pharmaceutical industries. This will enable our team to expand into new markets and geographies with confidence. By bringing our teams together, we are creating a powerhouse of talent, knowledge, and experience that will allow us to offer even greater value to our clients.”

For more details about this transaction click here.

Morrissey Goodale, a specialized management consulting and research firm exclusively serving the architecture, engineering, and environmental consulting industries, initiated the transaction and advised Mainstay Engineering Group.

About Morrissey Goodale

Morrissey Goodale has helped hundreds of clients transform and grow their architecture, engineering, and environmental consulting companies into high-level performers through strategic business planning, mergers and acquisition advisory, valuation and ownership transition, market research, marketing and business development, leadership training and development, Lean Operation Strategies, organizational development and management, virtual reality solutions, and executive search. Morrissey Goodale’s team of M&A consultants assist throughout the M&A process, from preparing firms for a transaction to a successful integration. 

Morrissey Goodale’s extensive network of relationships with AE industry decision-makers around the globe uniquely qualifies the firm to identify the right buyers or sellers and guide AE firms through the complex merger or acquisition process, from conception to close.

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