Signify Signify (formerly Philips Lighting) is a major producer of LED and other lighting for professionals, consumers and IoT technology. With €6.4 billion in sales in 2018 and 29,000 employees, it claims to be the world's largest lighting company. The company was spun out from Koninklijke Philips in 2016. This profile discusses Signify and its relevance to the vertical farming industry. Signify