3G Capital to acquire controlling interest in Hunter Douglas PR Newswire ROTTERDAM, Netherlands and NEW YORK, Dec. 30, 2021 ROTTERDAM , Netherlands and NEW YORK , Dec. 30, 2021 /PRNewswire/ -- Hunter Douglas (AEX: HDG), the global market leader in window coverings and a major manufacturer of architectural products, and 3G Capital, a global investment firm and private partnership, today announced that Ralph Sonnenberg , the controlling shareholder of Hunter Douglas Group, has entered into a...