WASHINGTON (Reuters) ? Platinum Underwriters Holdings Ltd. may periodically sell up to $750 million in debt, common stock, preferred stock, warrants and other securities, according to a regulatory filing on Friday.

The Bermuda-based reinsurance company said it plans to use the proceeds for general corporate purposes including share repurchases, acquisitions, and working capital, according to the filing with the US Securities and Exchange Commission.

Bermuda insurers and reinsurers have raised billions of dollars in new capital since Hurricane Katrina smashed the USGulf Coast last month.

The increases in capital are aimed at recovering from big claims and having sufficient capital to meet meet demand as insurance premiums are expected to rise.