PITTSBURGH — Several personnel changes have been announced at the H.J. Heinz Co., including the promotion of Isobel Thomson to chief information officer and the appointment of Meg Nollen to global program management officer and office of the chairman.

Ms. Thomson, who joined Heinz in 1998, will be responsible for driving global I.T. strategy, structure and governance. She has held various I.T. positions in both Europe and the United States. Most recently, she was vice-president of information technology for Heinz Europe.

Ms. Nollen will continue as senior vice-president of investor relations while assuming the added responsibility of leading the global program management office, which focuses on driving company-wide initiatives to improve global effectiveness and efficiency. She also will join the office of the chairman, the most senior policy-making executive management group in the company led by William R. Johnson, chairman, president and chief executive officer of Heinz.

The company also announced that Karen Alber, who had been c.i.o., has decided to leave the company to pursue another career opportunity.