Styron has announced three new members to the company’s executive leadership. Chris Pappas, President and Chief Executive Officer of Styron, made the announcement.

MIDLAND, MI – Styron has announced three new members to the company’s executive leadership. Chris Pappas, President and Chief Executive Officer of Styron, made the announcement.

Richard J. Diemer Jr. has been named Executive Vice President and Chief Financial Officer of Styron. Diemer was previously the Senior Vice President and CFO of Albemarle Corp., a specialty chemical company. Diemer’s new role is effective Sept. 7. Celso Goncalves, who is currently CFO of Styron, will remain with the company through year-end to ensure a smooth transition.

John Sereda has joined Styron as Vice President and Treasurer. He will be responsible for all treasury matters, including cash management, risk management, relationships with ratings agencies and commercial banks, and financing. He is a member of the Styron leadership team and reports to Diemer.

George Osborne joins Styron as Vice President and Controller with responsibility for all controllership matters, including accounting policy and application, financial reporting, and internal control. He is a member of the Styron leadership team and reports to Diemer. Osborne most recently served as The Dow Chemical Co.’s Corporate Controller’s Director of M&A and Significant Transactions based in Midland, MI.

In March 2010, Pappas was named President and CEO of Styron, following the announcement that The Dow Chemical Co. and Bain Capital Partners had signed a definitive agreement for Dow’s Styron Division to be divested to an affiliate of Bain Capital and become a standalone, privately held company.