Alpha Sigma Phi Fraternity is a company with a President and Chief Executive Officer and a Chairman of the Board of Directors. In Alpha Sigma Phi, the Board of Directors is known as the Grand Council and the Chairman of the Board is known as the Grand Senior President.
The Grand Senior President presides over biennial Grand Chapters and special meetings of the Fraternity. He also presides over all meetings of the Grand Council. At such times as the Grand Council may direct, and during periods of vacancy of the office of Chief Executive Officer, the Grand Senior President will be the principal executive officer of the Fraternity, and will supervise and direct all of the business and affairs of the Fraternity. Since becoming a national fraternity in 1907, Alpha Sigma Phi has had a Grand Senior President. The following men have served Alpha Sigma Phi as Grand Senior President.