| Number | Begin | End | Name |
| 42 | December 2025 | | Will Koll |
| 41 | September 2024 | January 2024 | Graham W. Peterson |
| 40 | January 2024 | December 2025 | Corbin T. McElwaine |
| 39 | April 2023 | September 2024 | Kade Kreinbring |
| 37 | May 2022 | May 2021 | Talen E. Dengler |
| 38 | May 2022 | April 2023 | Talen E. Dengler |
| 36 | August 2021 | May 2022 | beau C. Van Berkum |
| 35 | May 2021 | May 2022 | beau C. Van Berkum |
| 34 | November 2020 | August 2021 | Connor R. Fitch |
| 33 | January 2020 | November 2020 | Cedric J. Bower |
| 32 | January 2019 | January 2020 | JT T. Henry |
| 31 | January 2018 | January 2019 | Wade Hill |
| 30 | January 2017 | January 2018 | Kelly May |
| 29 | January 2016 | January 2017 | Brandon D. Roseberry |
| 28 | December 2014 | January 2016 | Josh McMillan |
| 26 | January 2014 | January 2014 | Ryan Adolfson |
| 27 | January 2014 | December 2014 | Ryan Adolfson |
| 25 | January 2013 | January 2014 | Mr. Antoine Allen-Jackson |
| 24 | December 2011 | January 2013 | Kris D. Hopkins |
| 23 | December 2010 | December 2011 | Samuel T. Wright |
| 22 | December 2009 | December 2010 | Nathaniel L. Clear |
| 21 | January 2009 | December 2009 | Michael P. Coulter |
| 20 | January 2008 | January 2009 | Brandon D. Riley |
| 19 | August 2007 | January 2008 | Jamie Boley |
| 18 | December 2005 | August 2007 | Robert Lance |
| 17 | March 2004 | December 2005 | Andrew Dennis |
| 16 | December 2002 | March 2004 | Joshua Hoeg |
| 15 | March 2002 | December 2002 | Scott J. Searcy |
| 14 | February 2001 | March 2002 | Scott W. Pohlson |
| 13 | April 2000 | February 2001 | Eric E. Bormann |
| 12 | September 1999 | April 2000 | Eric C. Svalstad |
| 11 | September 1998 | September 1999 | Eric A. Meyer |
| 10 | April 1997 | March 1998 | Justin P. Short |
| 9 | July 1996 | March 1997 | Shane A. Staker |
| 8 | February 1995 | February 1996 | Jason W. Short |
| 7 | April 1993 | April 1994 | Aaron D. Vlcko |
| 6 | February 1992 | | Marcus A. Adkins |
| 5 | January 1977 | December 1978 | Jeffrey B. Marks |
| 3 | January 1961 | December 1961 | Bernard D. Giere |
| 4 | January 1961 | December 1961 | John G. Bucher, Jr. |
| 2 | January 1952 | December 1953 | Charles D. Darragh |
| 1 | | | Duncan M. Simpson, Jr. |