Exhibit 99.6
We hereby consent to the inclusion of our opinion letter to the Board of Directors of Sterling Bancorp (“Sterling”), as Annex F to the joint proxy
statement/prospectus which forms a part of the registration statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merger of Sterling with and into Webster Financial Corporation and to the references to
such opinion and the quotation or summarization of such opinion contained therein.
In giving such consent, we do not admit that we come within the category of persons whose consent is required under Section 7 of the Securities Act of
1933, as amended (the “Securities Act”), or the rules and regulations of the Securities and Exchange Commission thereunder, nor do we hereby admit that we are experts with respect to any part of the Registration Statement within the meaning of the
term “experts” as used in the Securities Act or the rules and regulations of the Securities and Exchange Commission thereunder.
