LONDON ( TheStreet) -- Smith & Nephew ( SNN) shares rose about 12% on reports the European medical device maker received a takeover bid last month from Johnson & Johnson ( JNJ). Sky News reported over the weekend that J&J offered 750 pence a share for Smith & Nephew but the offer was rejected as inadequate. Smith & Nephew never disclosed the 7 billion pound ($10.9 billion) offer to its shareholders, but now may be forced to after the rapid rise in its share price. J&J reportedly is considering whether to raise the bid for its British rival. Smith & Nephew shares were last trading at 727 pence a share. -- Written by Joseph Woelfel >To contact the writer of this article, click here: Joseph Woelfel >To submit a news tip, send an email to: email@example.com.