Occidental Petroleum Corp.

Commenced cash tender offers to purchase for cash outstanding notes in three separate pools. Occidental’s obligation to accept for purchase and pay for notes that are validly tendered and not validly withdrawn is limited to an aggregate amount of $700 million, increased to $725 million, for all the pool 1 notes; $650 million, increased to $790 million, for all the pool 2 notes; $650 million, increased to $2.25 billion, for all the pool 3 notes. The offers expired on May 20.