CSL Ltd. is a biopharmaceutical company, which engages in the manufacture, marketing, and distribution of biopharmaceutical and allied products. It operates through the following segments: CSL Behring, CSL Seqirus, and CSL Vifor. The CSL Behring segment provides plasma products, gene therapies, and recombinants. The CSL Seqirus segment includes predominantly influenza related products and provides pandemic services to governments. The CSL Vidor segment focuses on the distribution of products in the therapeutic areas of iron deficiency and nephrology. The company was founded on November 2, 1961 and is headquartered in Melbourne, Australia.