Director/PDMR Shareholding

GlaxoSmithKline PLC
13 July 2007



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

The Administrators of the GlaxoSmithKline Executive Supplemental Savings Plan
notified the Company and the under-mentioned persons on 13 April 2007 of changes
in their interests in Ordinary Share ADRs arising from an increase in their
interests under the Annual Investment Plan feature following the re-investment
of the dividend paid to shareholders on 12 July 2007 at a price of $52.64 per
share:-


Dr JP Garnier                                                   369.84
Dr D Pulman                                                     19.93
Mr D Stout                                                      303.43


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 July 2007



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