Jan 20 (Reuters) - Australia's Insignia Financial

said on Monday it offered to provide CC Capital access to non-public information to help determine whether the U.S.-based suitor can improve its proposal.

CC Capital on Friday revised its proposal to acquire all the shares of the 178-year-old wealth manager for A$4.60 cash per share, which currently stands at a 3.8% premium to Insignia's last close on Friday and values the company at A$3.07 billion ($1.90 billion).

The Australian wealth manager has been at the centre of a bidding war since early January, with both private equity firm Bain Capital and CC Capital circling the firm as suitors.

Bain Capital's revised offer currently values the firm at A$2.87 billion.

Insignia Financial described the information provided to CC Capital as non-exclusive but it was not immediately clear if Bain Capital had access to the same info. Bain Capital was not immediately available for comment.

"The provision of limited due diligence does not guarantee that the CC Capital Revised Indicative Proposal will result in a binding offer or one that is capable of being recommended by the Board of Insignia Financial," the company said in its statement.

($1 = 1.6126 Australian dollars)

(Reporting by Shivangi Lahiri in Bengaluru; Editing by Lisa Shumaker)

((Shivangi.Lahiri@thomsonreuters.com;))