NEW YORK — Allison+Partners has bought Sommerfield Communications, a New York boutique shop that specializes in corporate communications.

In announcing the deal, Allison+Partners said the acquisition expands its financial communications, ESG-related communications, executive positioning, thought leadership and B2B communications capabilities.

Sommerfield president Frank Sommerfield, who launched his eponymous firm 25 years ago, will focus on growing those offerings further as as an Allison+Partners managing director.

The advantages of the deal for Sommerfield include Allison+Partners’ global reach as well as its digital, data analytics, purpose and public affairs expertise, the agency said.  Allison+Partners operates in 31 markets around the world.

“It is exciting for our team to join one of the communications industry’s fastest-growing, innovative and creativity-focused agencies,” Sommerfield (pictured) said. “Allison+Partners’ culture and commitment to delivering against clients’ business goals complements our longstanding approach. Sommerfield clients will continue to receive senior-level, always-on counsel, strategy and execution – from the team members they’re accustomed to working with – and will also benefit from the expanded toolkit and perspective that our combination brings.”

Sommerfield will be part of Allison+Partners corporate and public affairs practice, which during the last year stepped up working on D&I initiatives, incorporated data & analytics and grew thought leadership business. The practice saw a dramatic increase in issues & crisis work during the that time, the firm said.

“We continue to experience strong growth with our global corporate communications and advisory offerings,” global president of worldwide client services Matthew Della Croce said. “Given the environment, our clients are managing through unprecedented disruption and change. Frank and his team’s experience, coupled with their proven entrepreneurial success, will help us maximize opportunities for our clients to successfully transform and grow.”