| Season | Team | League | GP | G | A | TP | PIM | Playoffs | GP | G | A | TP | PIM | |
| 2007-2008 | Peterborough Petes U15 AAA | ETAHL U15 | - | - | - | - | - | | | ||||||
| 2008-2009 | Peterborough Petes U16 AAA | ETAHL U16 | 57 | 24 | 48 | 72 | 26 | | | Playoffs | 4 | 0 | 1 | 1 | 2 |
| Peterborough Liftlock Stars | OJHL | 3 | 0 | 0 | 0 | 2 | | | |||||||
| 2009-2010 | Ottawa 67's | OHL | 64 | 4 | 8 | 12 | 12 | | | Playoffs | 12 | 0 | 3 | 3 | 0 |
| Canada Ontario U17 | WHC-17 | 6 | 0 | 0 | 0 | 0 | | | |||||||
| 2010-2011 | Ottawa 67's | OHL | 68 | 9 | 25 | 34 | 28 | | | Playoffs | 4 | 0 | 2 | 2 | 4 |
| Canada U18 | WJC-18 | 7 | 0 | 1 | 1 | 2 | | | |||||||
| 2011-2012 | Ottawa 67's | OHL | 64 | 17 | 43 | 60 | 14 | | | Playoffs | 18 | 2 | 13 | 15 | 4 |
| OHL All-Stars | Jr Super Series | 1 | 0 | 2 | 2 | 0 | | | |||||||
| 2012-2013 | Ottawa 67's | OHL | 42 | 11 | 29 | 40 | 10 | | | ||||||
| Owen Sound Attack | OHL | 27 | 8 | 16 | 24 | 2 | | | Playoffs | 12 | 1 | 9 | 10 | 0 | |
| Binghamton Senators | AHL | 3 | 1 | 1 | 2 | 0 | | | Playoffs | 3 | 0 | 0 | 0 | 0 | |
| Canada U20 | CAN-RUS Challenge | 2 | 0 | 0 | 0 | 0 | | | |||||||
| OHL All-Stars | Jr Super Series | 1 | 0 | 0 | 0 | 0 | | | |||||||
| 2013-2014 | Ottawa Senators | NHL | 49 | 3 | 6 | 9 | 14 | | | ||||||
| Binghamton Senators | AHL | 27 | 2 | 17 | 19 | 10 | | | Playoffs | 4 | 1 | 1 | 2 | 0 | |
| 2014-2015 | Ottawa Senators | NHL | 81 | 5 | 16 | 21 | 6 | | | Playoffs | 6 | 0 | 2 | 2 | 0 |
| 2015-2016 | Ottawa Senators | NHL | 75 | 10 | 16 | 26 | 18 | | | ||||||
| Canada | WC | 10 | 1 | 5 | 6 | 0 | | | |||||||
| 2016-2017 | Ottawa Senators | NHL | 79 | 2 | 15 | 17 | 20 | | | Playoffs | 19 | 0 | 1 | 1 | 2 |
| 2017-2018 | Ottawa Senators | NHL | 82 | 5 | 14 | 19 | 12 | | | ||||||
| 2018-2019 | Ottawa Senators | NHL | 74 | 7 | 19 | 26 | 18 | | | ||||||
| 2019-2020 | Toronto Maple Leafs | NHL | 56 | 1 | 7 | 8 | 20 | | | Playoffs | 5 | 1 | 0 | 1 | 4 |
| 2020-2021 | Pittsburgh Penguins | NHL | 53 | 4 | 13 | 17 | 10 | | | Playoffs | 6 | 0 | 2 | 2 | 0 |
| 2021-2022 | Edmonton Oilers | NHL | 78 | 5 | 23 | 28 | 14 | | | Playoffs | 16 | 1 | 6 | 7 | 12 |
| 2022-2023 | Edmonton Oilers | NHL | 80 | 1 | 14 | 15 | 24 | | | Playoffs | 12 | 0 | 1 | 1 | 2 |
| 2023-2024 | Edmonton Oilers | NHL | 79 | 5 | 20 | 25 | 14 | | | Playoffs | 24 | 2 | 3 | 5 | 0 |
| 2024-2025 | San Jose Sharks | NHL | 54 | 4 | 11 | 15 | 14 | | | ||||||
| Dallas Stars | NHL | 31 | 0 | 9 | 9 | 10 | | | Playoffs | 18 | 0 | 3 | 3 | 2 | |
| 2025-2026 | Los Angeles Kings | NHL | 82 | 1 | 8 | 9 | 16 | | | Playoffs | 4 | 0 | 0 | 0 | 0 |
| 2026-2027 | Los Angeles Kings | NHL | - | - | - | - | - | | |