| YEAR | DATE | EVENT | GOVERNOR |
| 1898 | 21 june | U.S. Territory | Francisco Portusach Martínez |
| 1898 | José Sisto (I) | ||
| 1898 | Venancio Roberto | ||
| 1899 | José Sisto (II) | ||
| 1899 | 1 february | Joaquín Cruz Pérez | |
| 1899 | 20 april | William Coe | |
| 1899 | 7 august | Richard Phillips Leary | |
| 1900 | Seaton Schroeder (I) | ||
| 1901 | William Swift | ||
| 1901 | 19 july | Seaton Schroeder (II) | |
| 1903 | 6 february | William Elbridge Sewell | |
| 1904 | R. Stone | ||
| 1904 | George Leland Dyer | ||
| 1905 | 2 november | Luke McNamee (I) | |
| 1906 | 3 december | Templin Morris Potts | |
| 1907 | 3 october | Luke McNamee (II) | |
| 1907 | 28 december | Edward John Dorn | |
| 1910 | 5 november | F.B. Freyer | |
| 1911 | 21 january | George Robert Salisbury | |
| 1912 | 30 january | Robert Edward Coontz | |
| 1913 | 23 september | A.W. Hinds | |
| 1914 | 28 march | William John Maxwell | |
| 1916 | 29 april | W.P. Cronan | |
| 1916 | 8 may | E. Simpson | |
| 1916 | 30 may | Roy Campbell Smith | |
| 1917 | |||
| 1918 | 15 november | William Wirt Gilmer (I) | |
| 1919 | 22 november | W.A. Hodgman | |
| 1919 | 21 december | William Wirt Gilmer (II) | |
| 1920 | 20 july | Ivan Cyrus Wettengel | |
| 1921 | 27 february | James S. Spore | |
| 1922 | 6 february | Adelbert Althouse (I) | |
| 1922 | 8 december | John P. Miller | |
| 1922 | 14 december | Adelbert Althouse (II) | |
| 1923 | 4 august | Henry Bertram Price | |
| 1924 | 26 august | A.W. Brown | |
| 1926 | 7 april | Lloyd Stogell Shapley | |
| 1929 | 11 june | Willis Winter Bradley | |
| 1931 | Edmund Spence Root | ||
| 1933 | 21 june | George Andrew Alexander | |
| 1936 | 27 march | Benjamin Vaughan McCondlish | |
| 1938 | 8 february | James Thomas Alexander | |
| 1940 | 20 april | George Johnson McMillin | |
| 1941 | 12 december | Japan occupation | Homura |
| 1944 | 21 july | U.S. Territory | Roy Stanley Geiger |
| 1944 | 21 august | U.S. Territory | Henry L. Larsen |
| 1946 | 30 may | Charles Alan Pownall | |
| 1949 | 27 september | Carlton S. Skinner | |
| 1953 | 27 march | Ford Quint Elvidge | |
| 1956 | june | William T. Corbett | |
| 1956 | 2 october | Richard Barrett Lowe | |
| 1959 | 14 november | Marcellus G. Boss | |
| 1960 | 9 july | Joseph F. Flores | |
| 1961 | 21 may | William Patlov Daniel | |
| 1962 | 15 december | Manuel Flores Leon Guerrero | |
| 1969 | Carlos Garcia Camacho | ||
| 1975 | 1 january | Ricardo Jerome Bordallo (I) | |
| 1979 | 1 january | Paul McDonald Calvo | |
| 1983 | 1 january | Ricardo Jerome Bordallo (II) | |
| 1987 | 1 january | Joseph Flores Ada | |
| 1995 | 1 january | Carl T.C. Gutierrez | |
| 2003 | 1 january | Felix Camacho | |
| 2011 | 1 january | Eddie Calvo | |
| 2018 | 6 november | Lou Leon Guerrero |