Siegfried Holding AG engages in the development and manufacture of active pharmaceutical ingredients for pharmaceutical clients with research and development programs, related intermediates, and controlled substances. The company is headquartered in Zofingen, Aargau and currently employs 3,886 full-time employees. The firm produces both drug substances and drug products. The drug substance portfolio includes contract development and manufacturing of both active pharmaceutical ingredients (APIs) and intermediates. The drug products portfolio comprises licensing and contract or co-development and manufacturing of oral solids and sterile. The firm's products and substances are developed for treatment of hypertension, benign prostate hyperplasia, depression, chronic myeloid leukemia, glaucoma, asthma, schizophrenia and bipolar disorders and diabetes. The firm operates production facilities in Switzerland, Germany, France, Malta, the United States, China, and Spain.