Director/PDMR Shareholding

GlaxoSmithKline PLC
09 August 2007



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

I give below details of changes in interests in the Ordinary shares of
GlaxoSmithKline plc in respect of the under-mentioned Person Discharging
Managerial Responsibility:-
                         
                    
Mr R Bondy          Exercise of options on 9 August 2007 over 10,515 Ordinary 
                    shares granted on 13 November 1997, which would have lapsed 
                    on 12 November 2007, under the SmithKline Beecham Employee 
                    Share Option Plan 1991 at a price of £12.28 per share.

                    The sale of 10,515 Ordinary shares on 9 August 2007 at a 
                    price of £12.94 per share.


The Company was advised of these transactions on 9 August 2007.

This notification is in accordance with Disclosure and Transparency Rule 3.1.4R
(1)(a).

S M Bicknell
Company Secretary

9 August 2007


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