Director/PDMR Shareholding

GlaxoSmithKline PLC
03 July 2007






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



I give below details of changes in the directors' interests in the Ordinary
Shares and American Depository Shares (ADSs) of GlaxoSmithKline plc.



On 1 July 2007, the Company's Non-Executive Directors were provisionally
allocated the following awards over Ordinary Shares and ADSs under the share
allocation arrangements for Non-Executive Directors for the period of service
from 1 April 2007 to 30 June 2007:


Non - Executive Director                   Ordinary Shares        American Depository Shares
                                                                            (ADSs)
Sir Christopher Gent                           2,197.45
Dr Stephanie Burns                                                          345.96
Mr Lawrence Culp                                                            691.93
Sir Crispin Davis                              1,528.66
Sir Deryck Maughan                                                          691.93
Dr Daniel Podolsky                                                          475.70
Sir Ian Prosser                                 859.87
Dr Ronaldo Schmitz                              611.46
Mr Tom de Swaan                                 525.48
Sir Robert Wilson                               477.71



The Company and the Non-Executive Directors were informed of these allocations
on 2 July 2007.



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



S M Bicknell

Company Secretary

3 July 2007


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