Director/PDMR Shareholding

GlaxoSmithKline PLC
09 May 2007



   Notification of Transactions of Directors, Persons Discharging Managerial
                      Responsibility or Connected Persons



I give below details of changes in the interests of Directors, Persons
Discharging Managerial Responsibility or Connected Persons in the Ordinary
Shares of GlaxoSmithKline plc.



Mr Andrew P Witty               The transfer by way of gift of 25 Ordinary
shares in GlaxoSmithKline plc on 9 May 2007.



The Company was advised of this transaction on 9 May 2007.



This notification relates to a transaction notified in accordance with
Disclosure Rule 3.1.4R(1)(a).





S M Bicknell

Company Secretary



9 May 2007


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