| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:34.13 | MAC Winter Invitational | 2026-01-22 |
| 100m Backstroke | 1:26.09 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Breaststroke | 1:38.99 | MAC Winter Invitational | 2026-01-22 |
| 100m Breaststroke | 1:32.85 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Butterfly | 1:25.11 | MAC Winter Invitational | 2026-01-22 |
| 100m Butterfly | 1:19.76 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 100m Freestyle | 1:14.68 | MAC Winter Invitational | 2026-01-22 |
| 100m Freestyle | 1:09.76 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m Backstroke | 3:13.03 | MAC Winter Invitational | 2026-01-22 |
| 200m Breaststroke | 3:26.53 | MAC Winter Invitational | 2026-01-22 |
| 200m Freestyle | 2:40.86 | MAC Winter Invitational | 2026-01-22 |
| 200m Freestyle | 2:31.83 | 2026 Steve Kingston Memorial | 2026-03-06 |
| 200m IM | 3:01.18 | MAC Winter Invitational | 2026-01-22 |
| 200m IM | 2:54.36 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 400m Freestyle | 5:43.36 | COBRA 2026 Stephen Clarke Classic | 2026-01-10 |
| 50m Breaststroke | 42.46 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Butterfly | 35.87 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 50m Freestyle | 33.45 | MAC Winter Invitational | 2026-01-22 |
| 50m Freestyle | 31.01 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
Thom, Sebastian's top personal bests include 100m Backstroke (1:34.13), 100m Backstroke (1:26.09), 100m Breaststroke (1:38.99), 100m Breaststroke (1:32.85), 100m Butterfly (1:25.11).
Thom, Sebastian swims for COBRA Swim Club.
Thom, Sebastian has competed in 8 meets.