Director/PDMR Shareholding

GlaxoSmithKline PLC
05 January 2007







   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 £14.00 per Ordinary Share, following the re-investment of
the dividend paid to shareholders on 4 January 2007.




Mr J S Heslop                                              164
Mrs P A Heslop                                             63
Mr R Bondy                                                 263
Mr D Learmouth                                             34
Dr D Pulman                                                142
Mrs C Pulman                                               14
Mr A Witty                                                 23
Mrs C Witty                                                285





The Company and the above named persons were advised of this information on 5
January 2007.



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



5 January 2007


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