Cormark was financial advisor when OSK has taken over Brett Resources:

http://www.brettresources.com/s/NewsReleases.asp?ReportID=390348&_Type=News-Releases&_Title=Brett-Resources-Receives-Friendly-Take-Over-Bid-From-Osisko

Brett Resources Inc. ("Brett") (TSX Venture Exchange -- BBR) (FRANKFURT: A4N) and Osisko Mining Corporation ("Osisko") (TSX: OSK) (FRANKFURT: EWX) jointly announce that they have entered into a definitive support agreement pursuant to which Osisko will offer to acquire (the "Offer") all of the issued and outstanding common shares of Brett (the "Shares"). Osisko has agreed to offer shareholders of Brett (the "Shareholders") 0.34 of an Osisko common share for each common share of Brett held. The consideration under the Offer represents a premium of 52.5% using the 20-day volume weighted average prices of Osisko and Brett on the TSX and TSX Venture, respectively for the 20 trading day period ending March 16, 2010. The value of the total consideration offered to the Shareholders is approximately $372 million calculated on a fully-diluted basis, implying an enterprise value of approximately $308 million. The boards of directors of both companies have unanimously approved this transaction and the board of directors of Brett will recommend that Shareholders tender to the Offer.

Osisko's financial advisor is Cormark Securities Inc.; its legal advisors are Fraser Milner Casgrain, LLP. Brett's financial advisors are Dundee Securities Corporation and Genuity Capital Markets; its legal advisors are DuMoulin Black LLP and Blake, Cassels & Graydon LLP.