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

I give below details of changes in interests of the under-mentioned Person Discharging Managerial Responsibility in the Ordinary shares of GlaxoSmithKline plc ("Ordinary shares"):

Dr P Vallance

Following the vesting on 29 January 2013 of 25% of an award made on 29 January 2007 under the GlaxoSmithKline Deferred Investment Award Plan ("The Plan"), Dr Vallance will receive a cash payment of 1433.75p per share in respect of 4997.121 notional Ordinary shares on 20 February 2013.

The Company and the above-mentioned person were advised of this information by the Administrators of the Plan on 31 January 2013.

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

V A Whyte

Company Secretary

31 January 2013


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