

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2009-10 | QMJHL | Gatineau Olympiques | 62 | 16 | 15 | 31 | 20 | 4 | 4 | 1 | 0 | 1 | 0 | -1 |
| 2010-11 | QMJHL | Gatineau Olympiques | 67 | 32 | 47 | 79 | 22 | 23 | 24 | 13 | 16 | 29 | 20 | 9 |
| 2011-12 | QMJHL | Gatineau Olympiques | 23 | 23 | 16 | 39 | 12 | 0 | -- | -- | -- | -- | -- | -- |
| 2011-12 | QMJHL | Chicoutimi Saguenéens | 23 | 9 | 17 | 26 | 13 | 0 | 16 | 4 | 10 | 14 | 6 | -2 |
| 2012-13 | AHL | Binghamton | 69 | 7 | 22 | 29 | 33 | 8 | -- | -- | -- | -- | -- | -- |
| 2012-13 | NHL | Ottawa Senators | 9 | 2 | 2 | 4 | 0 | 3 | 10 | 4 | 2 | 6 | 8 | 4 |
| 2013-14 | AHL | Binghamton | 46 | 20 | 24 | 44 | 23 | 15 | 4 | 1 | 0 | 1 | 2 | -3 |
| 2013-14 | NHL | Ottawa Senators | 28 | 2 | 0 | 2 | 12 | -5 | -- | -- | -- | -- | -- | -- |
| 2014-15 | AHL | Binghamton | 27 | 11 | 10 | 21 | 27 | 9 | -- | -- | -- | -- | -- | -- |
| 2014-15 | NHL | Ottawa Senators | 50 | 10 | 9 | 19 | 9 | 4 | 6 | 0 | 0 | 0 | 0 | 0 |
| 2015-16 | NHL | Ottawa Senators | 82 | 19 | 24 | 43 | 26 | 17 | -- | -- | -- | -- | -- | -- |
| 2016-17 | NHL | Ottawa Senators | 82 | 12 | 21 | 33 | 24 | 13 | 19 | 8 | 2 | 10 | 16 | 5 |
| 2017-18 | NHL | Ottawa Senators | 78 | 14 | 15 | 29 | 36 | -14 | -- | -- | -- | -- | -- | -- |
| 2018-19 | NHL | Ottawa Senators | 39 | 4 | 8 | 12 | 14 | -12 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Ottawa Senators | 60 | 24 | 16 | 40 | 32 | 10 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | New York Islanders | 7 | 2 | 0 | 2 | 17 | -6 | 22 | 8 | 3 | 11 | 21 | 10 |
| 2020-21 | NHL | New York Islanders | 54 | 14 | 14 | 28 | 10 | 10 | 19 | 3 | 10 | 13 | 6 | 9 |
| 2021-22 | NHL | New York Islanders | 77 | 18 | 21 | 39 | 30 | 0 | -- | -- | -- | -- | -- | -- |
| 2022-23 | NHL | New York Islanders | 70 | 13 | 27 | 40 | 14 | -2 | 6 | 0 | 1 | 1 | 0 | -1 |
| 2023-24 | NHL | New York Islanders | 82 | 11 | 22 | 33 | 13 | -8 | 4 | 1 | 1 | 2 | 0 | -3 |
| 2024-25 | NHL | New York Islanders | 79 | 14 | 28 | 42 | 23 | 4 | -- | -- | -- | -- | -- | -- |
| 2025-26 | NHL | New York Islanders | 59 | 15 | 16 | 31 | 2 | 6 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 856 | 174 | 223 | 397 | 262 | 20 | 86 | 24 | 19 | 43 | 51 | 24 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2018 | IIHF World Championship | Team Canada | 10 | 1 | 4 | 5 | 12 | 3 |