US wealth manager Colony Group has raised four new partners to bring the firm's senior management team to 19 partners in strength. Vincent Gratch serves as chief compliance officer, managing director of operations and associate general counsel. He joined Colony Group in 2000. Scott McDonald is a senior financial counsellor in Colony Wealth Management, the company's financial advisory division. He also joined the firm in 2000. Bob Whelan serves as national sales director and chairman of the company's Business Development Committee. He joined The Colony Group in 2006. Andy Wig is the director of Equity Portfolios, portfolio manager and a senior research analyst in Colony Investment Management, the company's investment management division. He joined the firm in 2001. Michael Nathanson, Colony Group president and chief executive, said: "These four new partners provide continuing expertise in the areas of investment management, wealth management, business development, and legal compliance and are great additions to our management team." The Colony Group manages over $1 billion and has offices in Boston, Washington, DC, West Palm Beach and Naples, Florida.