| Date | Transaction |
| 02-28-1996 | Haloti Ngata has retired from football. |
| 08-28-1995 | The St. Louis Lions have waived Haloti Ngata. |
| 09-04-1994 | The St. Louis Lions have moved Dre Bly, Roy Williams, Chris Claiborne, Jeff Backus, Scott Mitchell, Ken Hardy, Reuben Droughns, and Laken Tomlinson to the active roster. The St. Louis Lions have moved Tim Toone, Mike Machurek, Brandon Pettigrew, Tom Turnure, Haloti Ngata, Ronald Cherry, James Ihedigbo, and Quinton Reese to the inactive roster. |
| 08-31-1992 | The St. Louis Lions have moved Bennie Blades, Dre Bly, Chris Claiborne, Jeff Backus, Jim McNorton, Haloti Ngata, Scott Mitchell, Reuben Droughns, and Laken Tomlinson to the active roster. The St. Louis Lions have moved Tim Toone, Gabe Wright, Mike Machurek, Tom Turnure, James Davis, Ronald Cherry, Eric Ebron, and Jamaal Alexander to the inactive roster. |
| 08-10-1992 | The St. Louis Lions have moved Ronald Cherry, Tim Toone, Jamaal Alexander, Kevin Hancock, Ken Hardy, Tom Turnure, Eric Ebron, T.J. Jones, Mike Fuller, Kelly Butler, Sammie Hill, and Shaun Cody to the active roster. The St. Louis Lions have moved Jeff Backus, Carl Treu, Shaun Rogers, Glover Quin, Laken Tomlinson, Bennie Blades, Chris Claiborne, Dre Bly, Haloti Ngata, Scott Mitchell, and Reuben Droughns to the inactive roster. |
| 09-01-1991 | The St. Louis Lions have moved Bennie Blades, Dre Bly, Chris Claiborne, Jeff Backus, Haloti Ngata, Scott Mitchell, Reuben Droughns, and Laken Tomlinson to the active roster. The St. Louis Lions have moved Devon Taylor, Shaun Rogers, James Davis, Eric Ebron, Jamaal Alexander, Lewis Zimmerman, and Jerry Stehouwer to the inactive roster. |
| 08-11-1991 | The St. Louis Lions have moved Tim Toone, Gabe Wright, Mike Machurek, Devon Taylor, Shaun Rogers, Frank Billingsley, Rashean Mathis, Eric Ebron, Jamaal Alexander, and Jerry Stehouwer to the active roster. The St. Louis Lions have moved Bennie Blades, Dre Bly, Chris Claiborne, Jeff Backus, Shane Helmsley, Haloti Ngata, Scott Mitchell, Reuben Droughns, and Laken Tomlinson to the inactive roster. |
| 09-02-1990 | The St. Louis Lions have moved Bennie Blades, Cliff Avril, Dre Bly, Chris Claiborne, Jeff Backus, Haloti Ngata, Scott Mitchell, and Golden Tate to the active roster. The St. Louis Lions have moved Tim Toone, Dave Compton, Scott Conover, Devon Taylor, Alfonso Boone, Rashean Mathis, Jamaal Alexander, and George Smith to the inactive roster. |
| 09-25-1989 | The St. Louis Lions have moved Alfonso Boone and Rashean Mathis to the active roster. The St. Louis Lions have moved Terry Fair and Haloti Ngata to the inactive roster. |
| 09-24-1989 | Haloti Ngata of the St. Louis Lions is injured with a complete PCL tear and is expected to be out for the rest of the season. |
| 09-03-1989 | The St. Louis Lions have moved Bennie Blades, Dre Bly, Haloti Ngata, Scott Mitchell, Carl Treu, Golden Tate, David Sloan, and Laken Tomlinson to the active roster. The St. Louis Lions have moved Dave Compton, Alfonso Boone, Ladrian Waddle, Rashean Mathis, Derrick Williams, Jeff Lamana, Jamaal Alexander, and Jerry Stehouwer to the inactive roster. |
| 08-14-1989 | The St. Louis Lions have moved Dave Compton, Stan Baska, Bruce Molesworth, Bubba Dodd, James James, Dave Campbell, Jim Hogue, Ladrian Waddle, Elvis Bowling, Jeff Lamana, and Lindsay Graves to the active roster. The St. Louis Lions have moved Bennie Blades, Darius Slay, Haloti Ngata, Scott Mitchell, Carl Treu, David Sloan, Ryan Broyles, and Laken Tomlinson to the inactive roster. |
| 10-10-1982 | Haloti Ngata of the St. Louis Lions is injured with a knee contusion and is expected to be out for approximately 7 days. |
| 09-06-1981 | The St. Louis Lions have changed Eddie Edinger's name to Haloti Ngata. |
| 08-10-1981 | The St. Louis Lions have moved Jake Sands, Bill Daigle, Mike Sullivan, Bill Bentley, Mike Hines, Gary Psaltis, Eddie Edinger, Jerald Newman, Leonard Beverly, Matthew Whittington, Carl Treu, Earl Fawcett, and Adam Moran to the active roster. The St. Louis Lions have moved Rod Turnbow, Buzz Davis, David Martin, Trumaine Slater, Darius Slay, Al Dancewicz, Sam Kiefer, Mike Freitas, Mel Bowman, Kevin Brown, Joe Feldhaus, Rob Sims, and Jim Gaustad to the inactive roster. |
Defensive Tackle