The last few years have been good to the law firm Goodwin, to put it mildly. Locally, Goodwin has dominated the handling of initial public offerings in the bustling life sciences industry, and the Boston-bred firm is even winning work on high-profile Silicon Valley stock offerings like Lyft Inc.’s. And that’s just the IPOs. Goodwin’s transactional and litigation work, taken together, has powered it to new financial heights. In a four-year span, it grew its annual revenue by more than half, to $1.2 billion. It’s a strong position for a new managing partner to start his reign. To Mark Bettencourt, who takes over as Goodwin’s firmwide managing partner on Oct. 1, the recent success only marks the beginning of a plan that’s been a long time coming. Read the Boston Business Journal’s executive profile on Bettencourt here.