

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2014-15 | USHL | USNTDP | 35 | 3 | 2 | 5 | 30 | -20 | -- | -- | -- | -- | -- | -- |
| 2015-16 | USHL | USNTDP Juniors | 23 | 4 | 10 | 14 | 23 | 5 | -- | -- | -- | -- | -- | -- |
| 2016-17 | NCAA | Univ. of Wisconsin | 30 | 15 | 18 | 33 | 32 | 2 | -- | -- | -- | -- | -- | -- |
| 2017-18 | NCAA | Univ. of Wisconsin | 36 | 17 | 15 | 32 | 26 | -9 | -- | -- | -- | -- | -- | -- |
| 2017-18 | AHL | Providence Bruins | 13 | 5 | 3 | 8 | 11 | 3 | 3 | 0 | 1 | 1 | 0 | -4 |
| 2018-19 | AHL | Providence Bruins | 55 | 14 | 11 | 25 | 67 | 2 | 4 | 0 | 2 | 2 | 2 | 1 |
| 2018-19 | NHL | Boston Bruins | 15 | 0 | 0 | 0 | 15 | -4 | -- | -- | -- | -- | -- | -- |
| 2019-20 | AHL | Providence Bruins | 59 | 8 | 24 | 32 | 148 | 10 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Boston Bruins | 2 | 0 | 0 | 0 | 0 | -1 | -- | -- | -- | -- | -- | -- |
| 2020-21 | NHL | Boston Bruins | 42 | 4 | 1 | 5 | 65 | -8 | -- | -- | -- | -- | -- | -- |
| 2021-22 | NHL | Boston Bruins | 60 | 8 | 10 | 18 | 57 | 10 | 4 | 0 | 0 | 0 | 16 | -2 |
| 2022-23 | NHL | Boston Bruins | 79 | 17 | 14 | 31 | 57 | 28 | 5 | 0 | 0 | 0 | 10 | -2 |
| 2023-24 | NHL | Boston Bruins | 82 | 18 | 22 | 40 | 69 | 9 | 13 | 3 | 2 | 5 | 20 | 5 |
| 2024-25 | NHL | Boston Bruins | 57 | 8 | 7 | 15 | 44 | -14 | -- | -- | -- | -- | -- | -- |
| 2024-25 | NHL | Edmonton Oilers | 1 | 0 | 0 | 0 | 0 | -2 | 22 | 1 | 3 | 4 | 25 | 1 |
| 2025-26 | NHL | Edmonton Oilers | 64 | 4 | 1 | 5 | 56 | -16 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 402 | 59 | 55 | 114 | 363 | 2 | 44 | 4 | 5 | 9 | 71 | 2 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2018 | World Junior U-20 Championships | Team USA | 7 | 5 | 0 | 5 | 2 | 3 |