The Nilekanis are the fourth Indians after Wipro chairman Azim Premji, Biocon chairman Kiran Mazumdar-Shaw and Sobha Developers Chairman Emeritus P N C Menon to sign up for The Giving Pledge. Infosys co-founder and tech billionaire Nandan Nilekani and his wife Rohini Nilekani have joined ‘The Giving Pledge’, an elite network of the world’s wealthiest individuals committing half their wealth to philanthropy. The Giving Pledge website uploaded Nilekanis’ letter signing up for the cause.