Siegfried Meister (17 October 1938 – 28 July 2017) was a German billionaire businessman, founder and 63% owner of Rational AG.
[2] He trained as an electrical engineer.
[3] In 1973, he founded Rational AG, which rose to success as a result of the popularity of the combination steamer, which he helped to develop.
[2] In March 2017, Forbes estimated his net worth at US$3.8 billion.
[3] He was married to Gabriella Meister, and they lived in Landsberg am Lech, Germany.