| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025 | Valur | Besta deild | 3 | 0 | 0 | 0 | 0 | – |
| 2024 | Valur | Besta deild | 23 | 1 | 0 | 10 | 0 | – |
| 2023 | Valur | Besta deild | 26 | 3 | 0 | 7 | 0 | – |
| 2022 | FH | Besta deild | 24 | 3 | 0 | 8 | 0 | – |
| 2021 | Valur | Besta deild | 21 | 1 | 0 | 5 | 0 | – |
| 2020 | Valur | Besta deild | 17 | 5 | 0 | 5 | 0 | – |
| 2019 | Valur | Besta deild | 18 | 3 | 0 | 4 | 1 | – |
| 2018 | Valur | Besta deild | 21 | 6 | 0 | 3 | 0 | – |
| 2017 | Sundsvall | Allsvenskan | 27 | 1 | 0 | 5 | 0 | 6.7 |
| 2016 | Valur | Besta deild | 21 | 13 | 0 | 6 | 0 | – |
| 2015 | Valur | Besta deild | 21 | 4 | 0 | 3 | 0 | – |
| 2014 | Valur | Besta deild | 21 | 0 | 0 | 5 | 0 | – |
| 2013 | Valur | Besta deild | 21 | 5 | 0 | 1 | 0 | – |
| 2012 | Valur | Besta deild | 19 | 2 | 0 | 3 | 0 | – |
| 2011 | Fjölnir | 1. Deild | 19 | 4 | 0 | 5 | 0 | – |
| 2010 | Fjölnir | 1. Deild | 18 | 1 | 0 | 3 | 1 | – |
| 2009 | Fjölnir | Besta deild | 14 | 0 | 0 | 2 | 0 | – |
| Total | 334 | 52 | 0 | 75 | 2 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 02 Feb 2023 | FH | Valur | Free | |
| - | Valur | FH | Free | |
| 01 Jan 2018 | Sundsvall | Valur | Free | |
| 01 Sept 2017 | Valur | Sundsvall | Free | |
| - | Fjölnir | Valur | Free | |
| 07 Dec 2008 | Fjölnir | Stjarnan | N/A |
K. Sigurðsson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.