Tax-exempt status statement: Statement that the organization is a 501c3 tax-exempt organization. The certificate of acknowledgment (PDF) must be in the form set forth in California Civil Code section 1189.I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. Thank you so much for employing your philanthropy to help bring this message to Cal Performances so that it can be shared with Northern California audiences. Prompt and thoughtful gift acknowledgments are central to effective fundraising. Use the sponsor's name. Since sponsorship is all about building relationships, writing "To Whom This May Concern" just won't cut it.