GlaxoSmithKline plc (the "Company") announces that in accordance with the authority granted by shareholders at the Company's Annual General Meeting on 5 May 2011 it purchased 1,350,000 of its Ordinary shares of 25 pence each ("shares") on 21 July 2011.
The highest price paid per share was 1351.5 pence per share.
The lowest price paid per share was 1337.5 pence per share.
The Company intends to hold these shares in Treasury.
Following the purchase of these shares, the Company holds 486,284,284 of its shares in Treasury, representing 8.68% of the total issued share capital of the Company.
Including shares which have been purchased but not yet settled, the Company holds 490,504,284 of its shares in Treasury, representing 9.59% of the total voting rights in the Company.
The Company has 5,117,235,200 shares in issue (excluding shares held in Treasury). This number represents the total voting rights in the Company and may be used by shareholders as the denominator for the calculations by which they can determine if they are required to notify their interest in, or a change to their interest in, the Company under the Financial Services Authority's Disclosure and Transparency Rules.