Fill out the Stock Gift Notification Form to notify the Maryland Food Bank and Brown Advisory about your gift of stock. What is required in a donation acknowledgement letter?What do you need to include in your donation acknowledgment letter? Gifts of appreciated stock or securities are a great way to support the Old-Growth Forest Network and receive tax benefits. A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. You must have the contemporaneous written acknowledgment described above and fill out IRS Form 8283. An acknowledgement letter is issued when an application for the proposed donation is received. Fill out our Online Stock Gift Notification Form. 2. Complete the Electronic Transfer Authorization Form (PDF) and provide it to your broker.