Director/PDMR Shareholding

GlaxoSmithKline PLC
11 July 2006



         Notification of Transactions of Directors, Persons Discharging

                 Managerial Responsibility or Connected Persons





The Administrators of the GlaxoSmithKline Performance Share Plan notified the
Company and the under-mentioned persons on 11 July 2006 of an increase in their
notional interests in Ordinary Shares at a price of £15.40 per share and
Ordinary Share ADRs at a price of $57.17 per ADR following the notional
re-investment of the dividend paid to shareholders on 6 July 2006.




Dr JP Garnier                                      2,919.696 ADRs

Mr J Heslop                                          115.331 Ordinary shares

Dr M Slaoui                                          277.800 Ordinary shares

Mr R Bondy                                         1,168.107 Ordinary shares

Dr F Calhoun                                         364.962 ADRs

Mr J Clarke                                          747.923 Ordinary shares

Mr M Dunoyer                                         439.936 Ordinary shares

Dr R Greig                                           364.962 ADRs

Mr D Learmouth                                        81.230 Ordinary shares

Mr D Phelan                                          562.041 ADRs

Dr D Pulman                                          386.476 Ordinary shares
                                                     179.037 ADRs

Mr D Stout                                         1,080.287 ADRs

Mr C Viehbacher                                      562.041 ADRs

Mr A Witty                                         1,028.975 Ordinary shares





The notional dividends accrued will be paid out in proportion to the percentage
of participants' Performance Share Plan holdings that vest following the end of
the relevant three year measurement period.



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



S M Bicknell

Company Secretary



11 July 2006


                      This information is provided by RNS
            The company news service from the London Stock Exchange