| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2024/2025 | MSV Duisburg | Regionalliga | 9 | 0 | 0 | 0 | 0 | – |
| 2023/2024 | KV Oostende | Challenger Pro League | 19 | 1 | 1 | 0 | 0 | 6.6 |
| 2023/2024 | Bochum | Bundesliga | 0 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | St. Pölten | 2. Liga | 28 | 12 | 0 | 0 | 0 | – |
| 2021/2022 | Bochum | Bundesliga | 1 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | Bochum | Premier League | 0 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Bochum | 2. Bundesliga | 1 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Bochum U19 | U19 Bundesliga | 3 | 5 | 0 | 0 | 0 | – |
| 2019/2020 | Bochum U19 | U19 Bundesliga | 20 | 9 | 0 | 0 | 0 | – |
| 2018/2019 | Bochum U19 | U19 Bundesliga | 1 | 0 | 0 | 0 | 0 | – |
| Total | 82 | 27 | 1 | 0 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | Bochum | St. Pölten | Loan | |
| 07 Jan 2023 | St. Pölten | Bochum | Back from Loan | |
| 09 Jan 2023 | Bochum | KV Oostende | Transfer | |
| - | KV Oostende | MSV Duisburg | Free Transfer | |
| 07 Jan 2025 | MSV Duisburg | Bochum II | Loan | |
| 07 Jan 2026 | Bochum II | MSV Duisburg | Back from Loan |
L. Hartwig career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.