Director/PDMR Shareholding

GlaxoSmithKline PLC
02 January 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 31 December 2006, 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 October 2006 to 31 December 2006:


Non Executive Director          Ordinary Shares        American 
                                                   Depository Shares
                                                        (ADSs)
Sir Christopher Gent               1,861.50
Mr Lawrence Culp                                        689.96
Sir Crispin Davis                  1,116.90
Sir Deryck Maughan                                      689.96
Dr Daniel Podolsky                                      560.59
Sir Ian Prosser                      837.68
Dr Ronaldo Schmitz                   446.76
Mr Tom de Swaan                      418.84
Sir Robert Wilson                    372.30


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

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


S M Bicknell
Company Secretary
2 January 2007




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