PartnerRe Ltd. is seeking shareholder approval to increase the maximum number of directors on its board to 11 from ten, according to a preliminary proxy filed with the Securities and Exchange Commission.

The company also said in the filing from late Tuesday that it's seeking to set the minimum number of directors at three.

PartnerRe said the proposed increase in directors would provide flexibility to its board and would provide additional skills or enhancement to the board's effectiveness.

Shareholders on record at the close of business Friday may vote on the proposal and other matters at the company's annual shareholders meeting scheduled for May 13 .