Pullman Co. said an investor group led...

Pullman Co. said an investor group led by its senior management and Henley Manufacturing Corp. of Hampton, N.H., has offered to acquire the firm for about $309 million. Princeton, N.J.-based Pullman, which makes truck trailers and industrial components, said the investor group has offered $7.50 a share for all outstanding common shares. It said about 90% would be paid in cash and the remainder in securities. Henley already owns about 10% of Pullman’s 41.15 million common shares and is the firm’s largest shareholder. Pullman said a special committee of its board will consider the proposal.