Onex-backed Acacium Group, a global healthcare and life science delivery partner with services and staffing operations, completed the acquisition of Sumo Medical Staffing, a locum tenens agency. Financial terms were not disclosed. “SUMO Medical Staffing is an outstanding healthcare business that expands our staffing and workforce management offering to our clients in the US. SUMO has a proven record of success and is closely aligned with our values in their commitment to excellence and putting people first. Acacium Group has ambitious plans to grow globally in a way that positively impacts society, and SUMO Medical Staffing will play an important part in helping that happen,” Mike Barnard, Acacium Group CEO.