Starbucks global communications chief Corey duBrowa and Greylock Partners marketing head Elisa Schreiber, along with senior executives from SherpaFoundry, VMware and Cleveland Clinic, have joined the speaker lineup for next month's In2 Innovation Summit, taking place at the Ritz-Carlton in San Francisco on February 17 and 18.

DuBrowa, who is SVP of global communications and international public affairs at Starbucks, will focus on shifts in stakeholder engagement, digital communication and the use of brand ambassadors, drawing on his experiences since joining Starbucks from Waggener Edstrom in 2010.

Schreiber, meanwhile, brings considerable experience from the VC world, where she specialises in the changing brand-building model required of startups. Prior to joining Greylock, Elisa spent more than three years as head of communications for Hulu, where she served on the executive team and led all corporate, crisis and consumer-facing communications activities globally.

Other new additions to the speaker lineup are Oliver Roll, VP of global corporate communications at VMware and former communications leader at Microsoft; Cleveland Clinic chief marketing and communications officer Paul Matsen; and, Tina Sharkey, CEO of SherpaFoundry, which helps corporations get better at taking advantage of their digital assets.

The duo join a heavyweight speaker lineup that also includes MasterCard SVP of corporate and digital communications Andrew Bowins; Twitter head of global marketing Daina Middleton; and, EMC CMO Jonathan Martin.

Tickets for the In2 Summit and SABRE Awards gala can now be purchased online. For more information on this year's event visit