| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:08.53 | Pan Am Open 2026 | 2026-02-21 |
| 100m Breaststroke | 1:33.48 | MAC Fall Fest Invitational | 2025-10-18 |
| 100m Butterfly | 1:20.13 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 100m Freestyle | 1:01.36 | Pan Am Open 2026 | 2026-02-21 |
| 1500m Freestyle | 2:30.84 | Pan Am Open 2026 | 2026-02-21 |
| 200m Backstroke | 2:24.04 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m Breaststroke | 3:12.99 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Freestyle | 2:14.86 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 200m IM | 2:39.16 | Border City Invitational 2025 | 2025-12-05 |
| 400m Freestyle | 4:52.87 | Border City Invitational 2025 | 2025-12-05 |
| 50m Backstroke | 31.51 | Border City Invitational 2025 | 2025-12-05 |
| 50m Breaststroke | 40.23 | 2025 NYAC Cup | 2025-11-14 |
| 50m Butterfly | 29.92 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
| 50m Freestyle | 27.27 | Border City Invitational 2025 | 2025-12-05 |
| 800m Freestyle | 10:02.25 | 2026 Central Region Div 1 SC Championships | 2026-02-06 |
Kouklinski, Arthur's top personal bests include 100m Backstroke (1:08.53), 100m Breaststroke (1:33.48), 100m Butterfly (1:20.13), 100m Freestyle (1:01.36), 1500m Freestyle (2:30.84).
Kouklinski, Arthur swims for Markham Aquatic Club.
Kouklinski, Arthur has competed in 12 meets.