By Saabira Chaudhuri Caterpillar Inc. (CAT) has unveiled a private offer to exchange outstanding debentures and senior notes for a combination of a new series of debentures due in 2042 and cash. The company is making seven separate exchange offers, one for 5.2% senior notes due 2041, another for 6.05% outstanding debentures due 2036, and five more for debentures due between 2028 and 2097. The old debentures are due between 2028 and 2097 and have principal amounts outstanding between $250 million and $1.25 billion. The offer will expire Aug. 23. The total exchange price will be set Aug. 10 and will include an early participation premium of $30 payable in cash only to eligible holders who validly tender and who do withdraw their old debentures prior to an Aug. 9 deadline. Shares of Caterpillar were up 0.4% to $83.66 in recent trading. The stock is down 20% in the past three months. Write to Saabira Chaudhuri at saabira.chaudhuri@dowjones.com Subscribe to WSJ: http://online.wsj.com?mod=djnwires