On December 3, 2021, Twitter, Inc. announced that as part of the organizational changes Michael Montano, Engineering Lead, will be stepping down from his position at the Company effective December 31, 2021. Mr. Montano will remain an advisor of the Company through the end of the first quarter of 2022 to ensure an orderly transition. On December 3, 2021, the Company announced that Chief Executive Officer Parag Agrawal is restructuring the leadership team to drive increased accountability, speed, and operational efficiency, shifting to a General Manager (GM) model for Consumer, Revenue, and Core Tech, which will be led by Kayvon Beykpour, Bruce Falck, and Nick Caldwell, respectively These GMs will lead all core teams across engineering, product management, design, and research. Lindsey Iannucci also joined the leadership team as Chief of Staff and Vice President of Operations to support Mr. Agrawal in strengthening operations across the leadership team, and the Company. As part of these changes, Dantley Davis, Design and Research Lead, will also be stepping down from his position at the Company effective December 31, 2021, and will remain an advisor through the end of the first quarter of 2022 to ensure an orderly transition.