Western Gas Partners L.P., which gathers, compresses, treats and transports natural gas for its parent Anadarko and other customers, priced its 18.8 million unit offering at $16.50 on Thursday, 8% below the midpoint of the proposed range. The units are expected to begin trading Friday on the NYSE under the ticker WES. UBS, Citi, Credit Suisse and Morgan Stanley were the lead underwriters on the deal.
