| Date | Transaction |
| 02-28-1999 | Tom Halloran has retired from football. |
| 08-19-1996 | The Washington Xenomorphs have waived Tom Halloran. |
| 08-19-1996 | The Washington Xenomorphs have moved Jack Chelf, Larry Johnson, Dedrick Berti, Bill Howard, Jeff Potter, Nate Matthews, David Reese, Jim O'Brien, Harry Little, Brandon Roberts, Kelen Williamson, Drew Brooks, Herbie Hall, Yatil Cobb, Danny Thomas, Gerald Croudip, Bob Cearing, Curtis Bundra, Radell Smith, Earl Williams, and Donnie Harrison to the active roster. The Washington Xenomorphs have moved Ted Jones, Lloyd Powe, Sammy Feagles, Israel Uremovich, Stan Carey, Tom Halloran, Pat Speelman, Dowe Claybrooks, Mike Cox, Bill Thompson, Sam Lundy, Steve Wyant, Dennis Brumfield, Alvin Tuckey, Porter Tyler, David Kosins, Hew Patrick, Paul Fulcher, Mike Shannon, and Ben Flanagan to the inactive roster. |
| 08-11-1996 | The Washington Xenomorphs have moved Tom Halloran and Pat Speelman to the active roster. The Washington Xenomorphs have moved Bill Howard and Donnie Harrison to the inactive roster. |
| 08-11-1996 | The Washington Xenomorphs have acquired Tom Halloran from the waiver wire. |
| 09-03-1995 | The Washington Xenomorphs have waived Tom Halloran. |
| 09-03-1995 | The Washington Xenomorphs have moved Myron Ramsey, Dedrick Berti, Bill Howard, Jim Tschappatt, Nate Matthews, James Jurgensen, David Reese, Jim O'Brien, Harry Little, Kelen Williamson, Aaron Compton, Drew Brooks, Herbie Hall, Danny Thomas, and Gerald Croudip to the active roster. The Washington Xenomorphs have moved Eddie Jenkins, Paul Waite, Garland Liebenstein, Jamie Young, Tom Halloran, Mark Franklin, Malcolm Faulk, Mike Cox, Cotton Earwig IV, Kevin Marker, David Kosins, Paul Fulcher, Mike Shannon, Ben Flanagan, and Greg Kelley to the inactive roster. |
| 08-27-1995 | The Washington Xenomorphs have moved Eddie Jenkins, Paul Waite, Garland Liebenstein, Tom Halloran, Ephraim Grant, Chip Burnette, Mark Franklin, Malcolm Faulk, Mike Cox, Kevin Marker, David Kosins, Randy Slater, Jamal DeLong, Paul Fulcher, Curtis Bundra, Mike Shannon, Ben Flanagan, and Greg Kelley to the active roster. The Washington Xenomorphs have moved Myron Ramsey, Larry Johnson, Dedrick Berti, Bill Howard, Jim Tschappatt, Nate Matthews, James Jurgensen, David Reese, Jim O'Brien, Harry Little, Brandon Roberts, Kelen Williamson, Joe Davis, Aaron Compton, Herbie Hall, Danny Thomas, Gerald Croudip, and Earl Williams to the inactive roster. |
| 08-27-1995 | The Washington Xenomorphs have acquired Tom Halloran from the waiver wire. |
| 09-05-1994 | The Washington Xenomorphs have waived Tom Halloran. |
| 01-23-1994 | The Washington Xenomorphs have acquired Tom Halloran from the waiver wire. |
| 08-23-1993 | The Washington Xenomorphs have waived Tom Halloran. |
| 08-22-1993 | The Washington Xenomorphs have moved Malcolm Faulk, Ephraim Grant, Dean Drzewiecki, Lamar Crudup, Kelen Williamson, Dedrick Berti, Jim Tschappatt, Nate Matthews, Frank Poole, Joe Davis, Drew Brooks, Jim O'Brien, Danny Thomas, Curtis Bundra, Chuck Smith, James Jurgensen, Mike Gossett, Joe Denfield, Daryl Jones, and Larry Carr to the active roster. The Washington Xenomorphs have moved Alex Thomas, Freddie Stephens, Chip Burnette, Dick Austin, Tom Halloran, Porter Tyler, Gerald Carter, Randy Mazurek, Adrian Myers, Ricky Justin, Jamie Knight, Eddie Maxie, Aaron Compton, Jim Bailey, Brandon Roberts, Doug Crafts, Gerald Croudip, Bill Bonner, Frank Young, and Charle Summerell to the inactive roster. |
| 08-15-1993 | The Washington Xenomorphs have moved Les Kovac, Jamie Knight, Frank Young, Garland Liebenstein, Porter Tyler, Eddie Maxie, Jon Scott, Aaron Compton, Gerald Carter, Randy Mazurek, Adrian Myers, Dick West, Charle Summerell, and Tom Halloran to the active roster. The Washington Xenomorphs have moved Dean Drzewiecki, Danny Thomas, Wilbur Cunningham, Kelen Williamson, Chuck Smith, Mike Gossett, Joe Denfield, Drew Brooks, Mike Barrett, Larry Carr, Jim O'Brien, Mark Franklin, Jim Tschappatt, and Nate Matthews to the inactive roster. |
| 08-09-1993 | The Washington Xenomorphs have acquired Tom Halloran from the waiver wire. |
| 08-17-1992 | The Buffalo Bisons have waived Tom Halloran. |
| 04-28-1991 | The Buffalo Bisons have moved Tom Halloran to the inactive roster. |
| 11-05-1990 | The Buffalo Bisons have moved Tom Halloran to the active roster. The Buffalo Bisons have moved Shaun Henderson to the inactive roster. |
| 09-04-1989 | Trade #63429 has been completed between the Washington Xenomorphs and the Buffalo Bisons. The Buffalo Bisons receive Ed Times (QB), Tom Halloran (LB) from the Washington Xenomorphs in exchange for Draft Pick - 1992 Round 3 (BUF). |
| 09-03-1989 | The Washington Xenomorphs have moved Kevin Brown, Steve Mueller, Eugene Sloan, Kevin Annan, Pete Kahler, Henry Reed, Alex Thomas, Steve Forrest, Chase Jackson, Michael Owens, John Watts, Milt Baldinger, Drew Chamberlain, Joe Simon, Malcolm Faulk, Jim Mitchell, Devone Rivera, Ron Barni, and Kevon White to the active roster. The Washington Xenomorphs have moved Dan Johnson, Tom Halloran, Scott Golsen, Harry Scott, Dick Austin, David Reese, Daryl Jones, Wilber Prestel, Raymond Rose, Curt Nguyen, Jimmy Saimes, Bob Barnes, Jim Garden, Dee Caveness, Dean Drzewiecki, Billy Joe Joyce, Duke Collins, Ed Times, and Freddie Stephens to the inactive roster. |
| 08-27-1989 | The Washington Xenomorphs have moved Freddie Stephens, Dan Johnson, Ed Times, Mac Rembert, Alonzo Moss, Raymond Rose, Dick Austin, Tom Halloran, Bob Barnes, Dee Caveness, Dean Drzewiecki, Wilber Prestel, Billy Joe Joyce, Jimmy Saimes, Scott Golsen, Harry Scott, and David Reese to the active roster. The Washington Xenomorphs have moved Pete Kahler, Joe Simon, Kevon White, Alex Thomas, Malcolm Faulk, Jim Mitchell, Kevin Annan, Henry Reed, Ron Barni, Steve Forrest, Milt Baldinger, Kevin Brown, Steve Mueller, Eugene Sloan, Devone Rivera, Michael Owens, and John Watts to the inactive roster. |
| 08-21-1989 | The Washington Xenomorphs have moved Michael Owens, Jim Mitchell, Joe Simon, John Watts, Ron Barni, John Stuart, Milt Baldinger, Alex Thomas, Chip Burnette, Devone Rivera, Mark Franklin, Joe Sigurdson, Vic Dowden, Kevin Brown, Steve Forrest, Steve Mueller, Kevin Annan, Wilbur Cunningham, Eugene Sloan, Henry Reed, Chris Laurinaitis, Malcolm Faulk, and Kevon White to the active roster. The Washington Xenomorphs have moved Dee Caveness, Dean Drzewiecki, Billy Joe Joyce, Ed Times, Mac Rembert, Freddie Stephens, Rusty Veasey, Dan Stewart, Jim Cross, Bob Barnes, Mike Spicer, Dick Austin, Gene Olympus, Alonzo Moss, Wilber Prestel, Hal Putzier, Tom Halloran, Dan Johnson, Raymond Rose, Jimmy Saimes, Scott Golsen, Harry Scott, and David Reese to the inactive roster. |
| 08-13-1989 | The Washington Xenomorphs have moved Mike Spicer, Hal Putzier, Tom Halloran, Scott Golsen, Harry Scott, Dick Austin, David Reese, Daryl Jones, Wilber Prestel, Raymond Rose, Curt Nguyen, Jimmy Saimes, Rusty Veasey, Jon Scott, Bob Barnes, Gene Olympus, Dee Caveness, Billy Joe Joyce, Dan Stewart, Melvin Maher, Duke Collins, Ed Times, Jim Scott, Freddie Stephens, and Jim Cross to the active roster. The Washington Xenomorphs have moved Kevin Brown, John Stuart, Steve Mueller, Eugene Sloan, Kevin Annan, Wilbur Cunningham, Joe Sigurdson, Henry Reed, Chris Laurinaitis, Alex Thomas, Chip Burnette, Mark Franklin, Vic Dowden, Steve Forrest, Chase Jackson, Michael Owens, John Watts, Milt Baldinger, Drew Chamberlain, Joe Simon, Malcolm Faulk, Jim Mitchell, Devone Rivera, Ron Barni, and Kevon White to the inactive roster. |
Linebacker