Twitter's new chief executive jack Dorsey is giving about a third of his Twitter stock, or 1% of the company, back to the company for an equity pool for employees. He said in a tweet that he wanted to "reinvest directly in our people". The 38-year-old tech billionaire made a similar move in December 2013 when he gave 10% of his shares back to Square, the digital payments company he co-founded and that he also leads as CEO. Last week, when Square filed paperwork with the Securities and Exchange Commission for an initial public offering, Mr Dorsey said he would donate 40 million Square shares to charity. "As for me,I'd rather have a smaller part of something big than a bigger part of something small," he tweeted. "I'm confident we can make Twitter big." Mr Dorsey's magnanimity, worth close to US$200 million, will be a morale booster for Twitter employees, who could be eligible for additional equity grants. New hires may also receive larger stock grants, which could help Twitter compete lor top talent. With Twitter facing sluggish user growth and growing questions from Wall Street, Mr Dorsey looking for ways to accelerate the pace of innovation and motivate employees.