Transaction in Own Shares

GlaxoSmithKline PLC 23 August 2005 GlaxoSmithKline plc (the "Company") announces that in accordance with the authority granted by shareholders at the Company's Annual General Meeting on 25th May 2005 it purchased 500,000 of its Ordinary shares of 25 pence each ("shares") on 23 August 2005 at a price of 1323.737 pence per share. The Company intends to hold these shares in Treasury. Following the purchase of these shares, the Company holds 107,123,000 of its shares in Treasury and has 5,837,124,117 shares in issue (excluding Treasury shares). This announcement does not constitute, or form part of, an offer or any solicitation of an offer to purchase or subscribe for securities in any jurisdiction. This information is provided by RNS The company news service from the London Stock Exchange

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