Director/PDMR Shareholding

GlaxoSmithKline PLC
13 February 2007


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


I give below details of changes in the interests of Directors, Persons
Discharging Managerial Responsibility or Connected Persons in the Ordinary
Shares of GlaxoSmithKline plc in respect of the undermentioned persons arising
from the purchase of Ordinary Shares at a price of £14.56 per Ordinary Share on
9 February 2007 through the Company's ShareReward Plan ("the Plan") which the
under mentioned persons entered on 5 October 2001:


Mr J S Heslop       Acquisition of 8 Ordinary Shares under the partnership 
                    element of the Plan (personal contribution)

                    Acquisition of 8 Ordinary Shares under the matching element 
                    of the Plan (Company contribution)

Mr R Bondy          Acquisition of 8 Ordinary Shares under the partnership 
                    element of the Plan (personal contribution)

                    Acquisition of 8 Ordinary Shares under the matching element 
                    of the Plan (Company contribution)

Mr D Learmouth      Acquisition of 8 Ordinary Shares under the partnership 
                    element of the Plan (personal contribution)

                    Acquisition of 8 Ordinary Shares under the matching element 
                    of the Plan (Company contribution)

Mr A P Witty        Acquisition of 8 Ordinary Shares under the partnership 
                    element of the Plan (personal contribution)

                    Acquisition of 8 Ordinary Shares under the matching element 
                    of the Plan (Company contribution)

The Company and the above-mentioned persons were advised of this information on
12 February 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



13 February 2007


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