When stepping down from a director position, it's useful to offer a letter of resignation as formal documentation of your intent to leave. Address the organization properly.Add contact details, company name, and date. Here are 3 examples that you can use for resignation letter as Senior Director -. Your director resignation letter only needs to be a few paragraphs long. There's no need to fill out reams of paper with flowery language. Add contact details, company name, and date. This form can be filled out on your computer and then printed. To and its Directors and Officers,. I am not required to fill out an official form.