STOCKHOLM—Hallvarsson & Halvarsson, the Swedish corporate and financial communications firm acquired by King Worldwide in 2008, has completed a management buyout and is once again owned by its partners, including founders Anders Halvarsson and Mats Hallvarsson and chief executive Martin Petersson.

The firm has been a leader in the mergers and acquisition and IPO arenas since its inception, and was an early pioneer in digital media (most notably in the annual reports business). The MBO includes the KW Digital business, which serves clients in 10 countries.

Over the years, H&H has expanded its range of services to include corporate communications, public affairs, internal communications, crisis and issues management, and corporate social responsibility. It has about 70 employees, the majority of them in Stockholm.

According to Petersson: “We are thrilled to buy back the company which we have grown more than 30 percent over the past five years. We are a group of highly motivated partners and employees, and it is with great enthusiasm that we look forward to taking our businesses into a new exciting phase.”

KW Digital has more than 50 employees in offices in Stockholm and London, and partners in Milan and Lisbon.

H&H will continue to be a member of AMO, the global network of strategic and financial communication consultancies, and has a partnership with Interel Group, the Brussels-based public affairs specialist.