As of February 4, 2025, Sigma Healthcare Limited was acquired by CW Group Holdings Limited, in a reverse merger transaction. Sigma Healthcare Limited, together with its subsidiaries, engages in the wholesale distribution of pharmaceutical goods and medical consumables to community pharmacies primarily in Australia. The company operates various aligned pharmacies, including branded pharmacies under the Amcal, Discount Drug Stores, Guardian, and PharmaSave brands. It also provides retail support services to its branded network of pharmacy members; dose administration aid services; and third and fourth-party logistics services to pharmaceutical manufacturers and other supplier partners. The company was founded in 1912 and is headquartered in Clayton, Australia.