Denver-based Bill Barrett Corp. plans to make an initial public offering of shares totaling an estimated $172.5 million. The number of shares and the price are to be determined. The stock will be listed on the New York Stock Exchange as BBG. Underwriters are Goldman, Sachs & Co.; JPMorgan; Lehman Brothers; Credit Suisse First Boston; Morgan Stanley; Petrie Parkman & Co.; First Albany Capital and Howard Weil Inc. Founded in March 2002, Bill Barrett Corp. is led by Bill Barrett, founder of Barrett Resources, which was sold in 2001 to Williams for $2.8 billion in stock and cash, including debt assumption. The company operates in the Rockies, specifically in the Wind River, Uinta, Powder River, Williston, Denver-Julesburg and Paradox basins, where it holds more than 650,000 net undeveloped leasehold acres. December 2003 production was 71.7 million cu. ft. equivalent per day, net (90% gas; 87% operated), and net proved reserves were 204 billion cu. ft. equivalent (89% gas). Separately, Houston-based W&T Offshore has filed for an IPO of shares worth up to $201 million. It has not yet set the number of shares to be offered, or the price. It hopes to trade on the New York Stock Exchange as WTI. W&T is focused primarily in the Gulf of Mexico area. Proved reserves at year-end 2003 were 444.7 billion cu. ft. of gas equivalent, 66% proved developed and 52% gas. March 2004 production was about 235 million cu. ft. equivalent per day. Joint book-running managers are Lehman Brothers, Jefferies & Co., JPMorgan, Raymond James & Associates and RBC Capital Markets.