Gustav Baron defeated Isaac Wiebe in Round 4, and won the 2015 Les Mundwiler Memorial with a perfect 4-0 score. Second place prize with 3 points was won by Rolando Bince. Also scoring 3, but taking the U1900 prize, was Colin Prince. Isaac Wiebe, Theo Wolchock, and Myron Kernetsky finished third with 2.5 points, but Ken Einarsson also had 2.5 points to win 2nd U1900.
Charles Tetrault won top U1700. Peter Magyar won top U1550.
| Bd | Res | White | Black | Res | |
| 1 | 1 | Gustav L Baron (2060 3.0) | Isaac Wiebe (2111 2.5) | 0 | |
| 2 | ½ | Rolando Bince (1959 2.5) | Myron Kernetsky (1906 2.0) | ½ | |
| 3 | 0 | Jim Green (1877 2.0) | Colin Prince (1890 2.0) | 1 | |
| 4 | 1 | Theo Wolchock (1919 1.5) | John Klokow (1805 1.5) | 0 | |
| 5 | 0 | James Atem (1880 1.5) | Ken Einarsson (1773 1.5) | 1 | |
| 6 | 1 | Charles Tetrault (1520 1.0) | Peter Magyar (1488 1.5) | 0 | |
| 7 | 0 | Max Korenbaum (1342 0.5) | Keith Czarny (1655 0.5) | 1 | |
| 8 | ½ | Bruce Leaden (1523 0.5) | Rayan Roy (1589 0.5) | ½ |