Who signs and how do they sign a letter from a Board of Directors not an individual?

A letter from a Board of Directors is typically signed by the Chairperson of the Board, who represents the collective authority of the board. The letter may also include the signatures of other board members, often positioned below the Chairperson’s signature, to indicate collective endorsement. Additionally, the letter may have a printed signature line for the Chairperson’s name and title, along with the date. In some cases, the letter may also be formally issued on company letterhead to signify its authenticity.