Director/PDMR Shareholding

GlaxoSmithKline PLC
16 July 2007



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



The Administrators of the Deferred Investment Award Plan notified the Company
and the under-mentioned person 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 R G Greig                                                       46.58

This notification relates to a transaction notified in accordance with
Disclosure Rule 3.1.4R(1)(a).



S M Bicknell

Company Secretary



16 July 2007


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