Last week Starwood, owner of St Regis, Westin and other brands, abandoned its original agreement with Marriott after Anbang, an ambitious Chinese insurer, led a group of investors bidding $13.2 billion in cash.

红色部分为主句，蓝色部分为时间从句。led 是时间从句中的谓语动词，怎么能改为leading 呢？

after Anbang led a group of investors bidding $13.2 billion in cash.