lexandre Grendene Bartelle is the owner of the yacht Madame Kate. Together with his twinbrother Pedro, he founded the shoe empire Grendene. Grendene is one of the world´s largest footwear producers, producing more than 250 million pairs per year, with 25,000 employees. Grendene has 13 footwear factories, and owns several footware brands, such as Melissa, Rider, Grendha, Ipanema, Ilhabela, Zaxy, Cartago, Pega Forte, Grendene Kids and Baby. Alexandre and his brother each hold approximate 35% of the shares. Alexandre is Chairman of the Board of Directors, while his brother Pedro is Vice-Chair. Alexandre Grendene owns a Falcon 7X private jet, with registration N407KT. According to Forbes, Alexandre Grendene has a net worth of USD 2.4 billion (May 2015).