Director/PDMR Shareholding

GlaxoSmithKline PLC
10 July 2006



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



I give below details of an increase in interests in the Ordinary Shares of
GlaxoSmithKline plc in respect of the personal holdings of the under-mentioned
persons at a price of £15.322 per Ordinary Share, following the re-investment of
the dividend paid to shareholders on 6 July 2006.




Mr J Heslop                                                136
Mr R Bondy                                                 217
Mr D Learmouth                                             27
Dr D Pulman                                                117
Mrs C Pulman                                               11
Mr A Witty                                                 18
Mrs C Witty                                                236





The Company and the above named persons were advised of this information on 7
July 2006.



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





S M Bicknell
Company Secretary



10 July 2006


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