| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:18.35 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Breaststroke | 1:29.15 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Butterfly | 1:16.16 | ManSask Provincial Championships | 2025-07-10 |
| 100m Butterfly | 1:14.28 | 2025 Prairie Winter International | 2025-12-11 |
| 100m IM | 1:19.56 | Bison Sprint IM Invitational | 2025-10-18 |
| 200m Backstroke | 2:47.43 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 200m Breaststroke | 3:13.14 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m Butterfly | 2:58.11 | ManSask Provincial Championships | 2025-07-10 |
| 200m Butterfly | 2:44.62 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m Freestyle | 2:25.75 | Edmonton Open 2026 | 2026-01-30 |
| 200m Freestyle | 2:24.80 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 200m IM | 2:48.78 | 2026 Manta Grand Prix | 2026-02-20 |
| 400m Freestyle | 5:09.55 | ManSask Provincial Championships | 2025-07-10 |
| 400m Freestyle | 5:03.23 | Seals West Side Challenge | 2025-11-28 |
| 400m IM | 5:55.47 | Edmonton Open 2026 | 2026-01-30 |
| 400m IM | 5:43.24 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 50m Backstroke | 36.74 | Bison Sprint IM Invitational | 2025-10-18 |
| 50m Breaststroke | 41.86 | Bison Sprint IM Invitational | 2026-01-10 |
| 50m Butterfly | 34.53 | ManSask Provincial Championships | 2025-07-10 |
| 50m Butterfly | 33.14 | Bison Sprint IM Invitational | 2026-01-10 |
| 50m Freestyle | 31.72 | Bison Sprint IM Invitational | 2026-01-10 |
| 800m Freestyle | 10:36.24 | Edmonton Open 2026 | 2026-01-30 |
| 800m Freestyle | 10:09.69 | St. James Seals Invitational | 2026-01-23 |
Northam, Lexus's top personal bests include 100m Backstroke (1:18.35), 100m Breaststroke (1:29.15), 100m Butterfly (1:16.16), 100m Butterfly (1:14.28), 100m IM (1:19.56).
Northam, Lexus swims for Manta Swim Club.
Northam, Lexus has competed in 9 meets.