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 discharging managerial responsibility:

Mr S M Bicknell acquired a beneficial interest in 11 Ordinary Shares arising from the re-investment of dividends under Personal Equity Plans on 7 January 2013 at 1373.5 pence per Share.

The Company and the above named individual were advised of this transaction on

8 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

8 January 2013


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