GlaxoSmithKline plc

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

The Administrators of the GlaxoSmithKline US Deferred Performance Share Plan (the 'Plan') notified GlaxoSmithKline plc (the 'Company') on 28 April 2016 that the under-mentioned Director and Person Discharging Managerial Responsibilities ('PDMR') acquired American Depositary Shares ('ADSs') at a price of $42.64 per ADS following the re-investment of the dividend paid to shareholders on 14 April 2016.

Director/PDMR

ADSs

Dr M M Slaoui

619.601

Mr D E Troy

833.603

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

V A Whyte

Company Secretary

29 April 2016

GSK - GlaxoSmithKline plc issued this content on 29 April 2016 and is solely responsible for the information contained herein. Distributed by Public, unedited and unaltered, on 02 May 2016 23:03:26 UTC. Original document available at http://otp.investis.com/clients/uk/GlaxoSmithKline/rns/regulatory-story.aspx?cid=410&newsid=712362