Director/PDMR Shareholding

GlaxoSmithKline PLC
17 April 2007



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



I give below details of changes in interests in the Ordinary Shares of
GlaxoSmithKline plc in respect of the under-mentioned person:



Mr R M Bondy acquired a beneficial interest in 1 Ordinary Share purchased under
a Personal Equity Plan on 16 April 2007 at £14.72.



The Company and the above named individual were advised of this transaction on
17 April 2007.



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



S M Bicknell
Company Secretary


17 April 2007


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