Director/PDMR Shareholding

GlaxoSmithKline PLC
16 January 2008




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



The Administrators of the Deferred Investment Award Plan notified the Company
and Dr Greig on 16 January 2008 of an increase in his interests in Ordinary
Share ADRs at a price of $54.11 per ADR following the re-investment of the
dividend paid to shareholders on 10 January 2008.


Dr R G Greig             50.89


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




S M Bicknell
Company Secretary

16 January 2008




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