Collegium, a nonprofit consulting, broad system of best-in-class professional services firms exclusively serving nonprofits, completed the acquisition of Alexander Haas, a fundraising consulting firm headquartered in Atlanta. Financial terms were not disclosed. "We are always seeking ways to add value for our clients, and our partnership with Collegium will empower both our current and future clients to navigate the evolving landscape of modern philanthropy. This interdependent partnership is a win-win-win for Alexander Haas, Collegium, and, most importantly, our clients," David King, Alexander Haas President and CEO.