FORM 6-K
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549
Report of Foreign Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
For period ending May 08, 2008
GlaxoSmithKline plc
(Name of registrant)
980 Great West Road, Brentford, Middlesex, TW8 9GS
(Address of principal executive offices)
Indicate by check mark whether the registrant files or
will file annual reports under cover Form 20-F
or Form 40-F
Form 20-F x Form 40-F
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Indicate by check mark whether the registrant by furnishing the
information contained in this Form is also thereby furnishing the
information to the Commission pursuant to Rule 12g3-2(b) under the
Securities Exchange Act of 1934.
Yes No x
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GlaxoSmithKline plc (the 'Company') announces that in accordance with the
authority granted by shareholders at the Company's Annual General Meeting on 23
May 2007 it purchased 1,650,000 of its Ordinary shares of 25 pence each
('shares') on 08 May 2008 at a price of 1,131.82 pence per share.
The shares will be cancelled.
Following the cancellation of these shares, the Company holds 484,194,158 of its
shares in Treasury, representing 9.02% of the total voting rights in the
Company.
The Company has 5,370,861,804 shares in issue (excluding Treasury shares). 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.
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 and is in conformity with the Financial Services Authority's
Disclosure and Transparency Rules.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorised.
GlaxoSmithKline plc
(Registrant)
Date: May 08, 2008 By: VICTORIA WHYTE
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Victoria Whyte
Authorised Signatory for and on
behalf of GlaxoSmithKline plc