| Time | Date | Name | Meet |
|---|---|---|---|
| 3:52.60 | Aug. 1, 2015 | Sean Grieshop | Speedo Junior National Championships |
| 3:53.54 | Aug. 1, 2014 | Sean Grieshop | Speedo Junior National Championsips |
| 3:56.41 | June 20, 2014 | Sean Grieshop | Arena Grand Prix at Santa Clara |
| 3:58.67 | April 24, 2014 | Sean Grieshop | Arena Grand Prix - Mesa |
| 4:00.34 | Jan. 17, 2014 | Sean Grieshop | ST TXLA Austin Grand Prix |
| 4:01.92 | Aug. 7, 2013 | Sean Grieshop | USA Swimming Junior National Championships |
| 4:02.45 | July 31, 2012 | Donnie Walker | Speedo Champions Series - Shenandoah, TX |
| 4:03.51 | Aug. 10, 2011 | Manny Mendoza | Speedo Junior National Championships |
| 4:10.12 | Aug. 9, 2010 | Manny Mendoza | Speedo Junior National Championships |
| 4:10.22 | Aug. 12, 2009 | Manny Mendoza | Speedo Junior National Championships |
| 4:15.40 | Aug. 9, 2007 | Dan Jackson | Speedo Junior National Championships |
