KeyCorp, parent company of Key Bank of Utah and other subsidiaries, has filed a registration statement with the Securities and Exchange Commission for a public offering of up to 4 million shares of its common stock.

Salomon Brothers Inc. and Montgomery Securities will lead-manage the underwriting group.The financial holding company said net proceeds of the offering will be used to repay $80 million of floating rate debt and for general corporate purposes, including the further strengthening of KeyCorp's equity capital in connection with past and future acquisitions.

KeyCorp has 620 branch offices in New York, Utah, Alaska, Idaho, Maine, Oregon, Washington and Wyoming. As of Dec. 31, 1990, KeyCorp had total assets of $19.3 billion, total deposits of $16.0 billion and total equity capital of $1.1 billion.