Prudential Financial Inc. has announced a series of high-level executive changes.

John Strangfeld, who succeeded Arthur Ryan as chief executive officer of Prudential, Newark, N.J., and is set to succeed Ryan as chairman in May, has named Mark Grier to serve in an “office of the chairman.”

Grier, a vice chairman at Prudential, will continue to be a vice chairman, Prudential says.

Grier will continue to oversee areas such as finance and risk management, and he also will lead a “global strategic initiatives” office, which will oversee Prudential’s business in China and the company’s international retirement operations.

Prudential also has:

- Promoted Rich Carbone, the company’s chief financial officer, to executive vice president, from senior vice president.

- Promoted Bernard Winograd, the chief executive of Prudential Investment Management, to executive vice president of the parent company.

- Named Charles Lowrey, head of Prudential Real Estate Investors, to be head of Prudential’s asset management business.

- Named Edward Baird to be an executive vice president and head of Prudential’s international division. Baird has been president of group insurance. Before that, he was in charge of the company’s asset management business in Japan.

- Promoted Lori High, head of group insurance sales and marketing, to succeed Baird as president of group insurance.

- Promoted Kazuo Maeda, head of the Prudential life insurance businesses in Japan, to executive vice president. Maeda will continue to run Prudential’s Japanese businesses.

In other personnel news:

- Massachusetts Mutual Life Insurance Company, Springfield, Mass., says it will be setting up regional retirement services teams that include both relationship managers and account managers.

The teams will be led by 4 newly appointed assistant vice presidents of service, according to MassMutual.

The new assistant vice presidents are Joanne Kisiel, Southeast region; Eric Leverson, Northeast region; Una Morabito, Midwest region; and Tracy Tierney-Clifford, West/Southwest regions.

- Munich Reinsurance America Inc., Princeton, N.J., a unit of M?nchener R?ckversicherungs-Gesellschaft A.G., Munich, has promoted Ed Griese to president of Munich Re America HealthCare.

Griese succeeds Robert Trainer, who will retire March 31.

- AXA Equitable Life Insurance Company, New York, a unit of AXA S.A., Paris, has hired Suzanne van Staveren to be vice president and chief operating officer of corporate markets, sells retirement plan products and services to large companies and their employees.

Van Staveren previously was a vice president in the large corporate market retirement services operation at Fidelity Employer Services Company, Marlborough, Mass., part of Fidelity Investments.

Van Staveren has a bachelor’s degree from Johnson & Wales University and a master’s degree in business from Northeastern University.

- Jackson National Life Insurance Company, Denver, a unit of Prudential P.L.C., London, has promoted John Koehler to vice president of the retirement and wealth strategies group, a part of the Jackson National Life Distributors L.L.C. subsidiary.

Koehler previously was director of the retirement and wealth strategies group.

Koehler also has founded and run an independent financial planning firm.

Koehler has a bachelor’s degree in finance and economics from Clarkson University. He holds the Certified Financial Planner, Chartered Financial Consultant, Chartered Retirement Planning Counselor and Chartered Life Underwriter professional designations.

- Milliman Inc., Seattle, has hired Anson Glacy Jr. to be a senior consultant.

Glacy will focus on helping life insurers and financial services companies with enterprise risk management.

Glacy previously was head of asset-liability management at Allstate Financial, a unit of Allstate Corp., Northbrook, Ill.