Director/PDMR Shareholding

GlaxoSmithKline PLC
02 January 2007



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


I give below details of changes in the directors' interests in the Ordinary
Shares and American Depository Shares (ADSs) of GlaxoSmithKline plc.

On 31 December 2006, the Company's Non-Executive Directors were provisionally
allocated the following awards over Ordinary Shares and American Depository
Shares (ADSs) in the Company through the Annual Re-investment of Dividends paid
throughout 2006:


SmithKline Beecham Non-Executive Directors Retainer Fee and Share Allocation
Award - Annual Dividend Reinvestment


Non-Executive Director      No. of         Average  
                          Ordinary           Price
                            Shares             (£)

Sir Ian Prosser             36.112           13.43



GlaxoSmithKline Non-Executive Directors Automatic Share Award and Elected Share
Award - Annual Dividend Reinvestment


Non-Executive Director      No. of         Average        No. of        Average 
                          Ordinary           Price          ADSs          Price
                            Shares             (£)                          ($)

Sir Christopher Gent        383.15           13.43
Mr Lawrence Culp                                          200.48          52.65
Sir Crispin Davis           460.39           13.43
Sir Deryck Maughan                                        139.00          52.65
Sir Ian Prosser             544.79           13.43
Dr Ronaldo Schmitz          487.14           13.43
Mr Tom de Swaan               6.14           13.43
Sir Robert Wilson           111.74           13.43



The Company and the Non-Executive Directors were informed of these allocations
on 2 January 2007.

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



S M Bicknell
Company Secretary
2 January 2007



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