Aug 2 Reuters U.S. oil company Chevron Corp said on Friday it was replacing several longstanding managers in a reshuffle of senior jobs and that it was moving its headquarters to Houston from San Ramon, California.

The changes come as the company works to cut costs and renew leadership after a series of setbacks, including operational challenges in Australia and Kazakhstan and an unexpected arbitration dispute that has delayed its plan to acquire Hess Corp.

The management changes signal a generational change. Nigel Hearne, executive vice president of Oil, Products Gas, will retire after 35 years with the company and be replaced from Oct. 1 by Mark Nelson, Chevron39;s vice chairman.

Rhonda Morris, vice president and chief human resources officer, will retire after 31 years with the company and will be succeeded by Michelle Green, vice president, Human Resources, Oil, Products Gas, effective January 1, 2025.

Colin Parfitt, vice president, Midstream, will retire after 29 years with the company and be replaced on Oct. 1 by Andy Walz, currently president, America39;s Products.

Earlier this year, CFO Pierre Breber also retired.

CALIFORNIA

Chevron said it would relocate the company39;s headquarters from San Ramon, where it was born 145 years ago as Pacific Coast Oil Co, to Houston. The company has been bitterly contesting state regulations on its oil producing and refining operations in the state.

California39;s oil output a century ago amounted to it being the…