Director/PDMR Shareholding

GlaxoSmithKline PLC
27 July 2007



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



The Administrators of the GlaxoSmithKline Annual Investment Plan notified the
Company and the under mentioned persons on 26 July 2007 of an increase in their
interests in Ordinary Shares at a price of £12.97 per share following the
re-investment of the dividend paid to shareholders on 12 July 2007:-




Dr M M Slaoui                                          198
Mr R M Bondy                                           256
Mr M M Dunoyer                                         95
Mr D Learmouth                                         17
Dr D Pulman                                            146
Mr A P Witty                                           89



This notification relates to transactions notified in accordance with Disclosure
Rules 3.1.4R(1)(a) and 3.1.4R(1)(b).





S M Bicknell

Company Secretary



27 July 2007


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