Director/PDMR Shareholding

GlaxoSmithKline PLC
17 January 2008





   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 17 January 2008 of an increase in
their 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 JP Garnier                1,773.02
Mr D J Phelan                  341.96
Mr D M Stout                   136.68



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





S M Bicknell

Company Secretary



17 January 2008


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