Director/PDMR Shareholding

GlaxoSmithKline PLC
16 July 2007



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


The Administrators of the SmithKline Beecham Mid-Term Incentive Plan notified
the Company and the under-mentioned persons on 16 July 2007 of an increase in
their interests in Ordinary Share ADRs at a price of $52.26 per ADR following
the re-investment of the dividend paid to shareholders on 12 July 2007.

Dr JP Garnier                                                      1,626.40
Mr D J Phelan                                                      313.68
Mr D M Stout                                                       125.38

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


S M Bicknell
Company Secretary

16 July 2007


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