Director/PDMR Shareholding

GlaxoSmithKline PLC
17 April 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 April 2007 of an increase in
their interests in Ordinary Share ADRs at a price of $56.84 per ADR following
the re-investment of the dividend paid to shareholders on 12 April 2007.

Dr JP Garnier                                                      1,700.88
Mr D J Phelan                                                      328.05
Mr D M Stout                                                       131.12

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

17 April 2007


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