Brazil-based Notre Dame Intermédica Participações S.A. on Feb. 26 filed for an initial public offering with the Sao Paulo stock exchange, according to a preliminary prospectus submitted to securities and exchange commission CVM.

The healthcare insurer will issue new shares in a primary offering while a secondary option will allow for controlling shareholder Bain Capital Public Equity LP to sell a portion of its stake.

The amount of the offering has not yet been disclosed.