2018 Guide to Effective Proxies

26 6 TH EDITION | GUIDE TO EFFECTIVE PROXIES TENET HEALTHCARE CORPORATION TWITTER, INC. UNUM GROUP VERIZON COMMUNICATIONS, INC. 2018 Tenet Healthcare Corporation Notice of Annual Meeting & Proxy Statement Proxy Statement Notice of 2018 Annual Meeting of Stockholders MAY30,2018 ■ SANFRANCISCO,CA ProxyStatementNoticeof2018annualmeetingofstockholdersmay30,2018SANFRANCISCO,CA We don’t wait for the future. We build it. 2018Notice of Annual Meeting of Shareholders and Proxy Statement Wedon’twaitforthefuture.2018NoticeofAnnualMeetingofShareholdersandProxyStatement 2018 Thursday, May 24, 2018