G.D. Searle & Co. said it paid...

G.D. Searle & Co. said it paid $388.1 million for 7.5 million shares of outstanding common stock from trusts established by the Searle family . . . Shamrock Holdings, a private firm owned by the Roy E. Disney family, says it has secured funds for its $303-million purchase of Central Soya . . . Lotus Development said it has signed a letter of intent to buy Dataspeed of San Mateo, Calif., for $6.5 million . . . New York investor Ivan F. Boesky and a group of companies he controls raised their stake in Cooper Laboratories to 8.5% from 3.7% of the common shares outstanding . . . Datapoint said it plans to lay off 240 workers at its manufacturing operations in San Antonio as a cost-reduction move.