The newcomer founded Intas Pharmaceuticals-which claims to be among the fastest-growing pharma firms in the country-in 1977. Run by sons Nimish and Binish, the Ahmedabad-headquartered company sells its generics in more than 70 countries. Debuts on list after private equity firm ChrysCapital, which had a 16 percent stake in Intas, struck a deal recently to sell 10 percent to Temasek valuing the firm at close to $1.4 billion. Chudgar was planning to list Intas last year but postponed it due to a dull market. Eldest son Urmish, a US-qualified haematologist, heads its biopharma arm.