IntraLinks Inc., a provider of secure business communications over the Internet, has filed with the Securities and Exchange Commission for an initial public offering of common stock totaling $50 million.

The number of shares and their estimated price have yet to be determined.

IntraLinks' products include the IntraLoan communications service, which lets multiple participants in syndicated loan transactions review documents in a secure Internet environment.

IntraLinks said it would use the deal's proceeds to expand product offerings and extend services to the pharmaceutical industry, as well as for general corporate purposes.

J.P. Morgan & Co. is to lead-manage the offering, and Banc of America Securities LLC and Volpe Brown Whelan & Co. are to be co-managers. The proposed stock symbol is ILNX, according to the SEC filing.

Separately, IntraLinks announced that it has raised $22 million from a group of investors including Reuters and Johnson & Johnson Development Corp., a subsidiary of the pharmaceutical company. The group also includes current investors Ernst & Young LLP, Patricof & Co. Ventures, and the New York City Investment Fund.

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