Director/PDMR Shareholding

GlaxoSmithKline PLC
05 July 2006


   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 30 June 2006, the following 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 2006 to 30 June 2006 as listed below.

Non Executive Director        Ordinary Shares        American Depository Shares
                                                                 (ADS)
Sir Christopher Gent              1,674.85
Mr Lawrence Culp                                                 663.01
Sir Crispin Davis                 1,339.88
Sir Deryck Maughan                                               663.01
Sir Ian Prosser                     753.68
Dr Ronaldo Schmitz                  736.94
Mr Tom de Swaan                     251.23
Sir Robert Wilson                   418.71

In addition, Mr de Swaan was provisionally allocated 249.06 Ordinary Shares for
the period of service from 1 January 2006 to 31 March 2006.

The Company and the directors were informed of these allocations on 4 July 2006.

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


S M Bicknell
Company Secretary

5 July 2006


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