|Full name||Thomas Bolis|
|Date of birth||2 August 1998|
|Place of birth||Bergamo, Italy|
|Height||1.87 m (6 ft 2 in)|
|2018–2019||→ Triestina (loan)||16||(0)|
|2019–2020||→ Piacenza (loan)||16||(0)|
|2020–||→ Ravenna (loan)||8||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 11 April 2021|
Born in Bergamo, Bolis was a youth exponent of Atalanta. On 29 April 2018, he was called up to the senior squad's official game for the first time, for Serie A match against Genoa, but remained on the bench. but did not appear on the field. In May 2018 he received a second call up for a match against Lazio but he remained again on the bench.
Loan to Triestina
On 6 August 2018, Bolis was signed by Serie C club Triestina on loan for the entire 2018–19 season. On 26 September he made his professional debut in Serie C for Triestina as a substitute replacing Tommaso Coletti in the 75th minute of a 3–0 home win over Ravenna. Three weeks later, on 17 October, Bolis played his first and only entire match for the club, a 2–0 away defeat against Südtirol. He also helped the club to reach the play-off finals, however Triestina lost 5–3 on aggregate against Pisa. Bolis ended his season-long loan to Triestina with 17 appearances, including only 3 of them as a starter, and 1 assist.
Loan to Piacenza
On 12 July 2019, Bolis was loaned to Serie C side Piacenza on a season-long loan deal. On 4 August he made his debut for Piacenza in a match won 3–2 at penalties after a 1–1 home draw against Viterbese Castrense in the first round of Coppa Italia, he played the entire match. On 25 August he made his league debut for the club as a substitute replacing Davide Zappella in the 76th minute of a 0–0 away draw against Arzignano. On 8 September, Bolis played his first match as a starter for the club, a 3–1 away win over Triestina, he was replaced by Hamza El Kaouakibi in the 67th minute. On 25 September he played his first entire match, a 3–1 home win over Ravenna. Bolis ended his loan to Piacenza with 17 appearances, 7 of them as a starter.
Loan to Ravenna
On 27 September 2020 Bolis joined Serie C club Ravenna on a season-long loan deal. One week later, on 4 October, he made his debut for the club as a starter in a 1–0 away defeat against Legnago Salus, he was replaced by Marco Fiorani in the 46th minute. However in November 2020 in a match against Sambenedettese he suffred an anterior cruciate ligament injury, he was out for the rest of the season and he was in recovery until August 2021. Bolis ended early his season with 8 appearances, including 5 of them as a starter, and one assist.
- As of 11 April 2021
|Triestina (loan)||2018–19||Serie C||16||0||0||0||—||1||0||17||0|
|Piacenza (loan)||2019–20||Serie C||16||0||1||0||—||—||17||0|
|Ravenna (loan)||2020–21||Serie C||8||0||0||0||—||—||8||0|
- All appearance(s) in Serie C play-off.
- "Atalanta vs. Genoa - 29 April 2018 - Soccerway". uk.soccerway.com. Retrieved 2019-11-24.
- "Lazio vs. Atalanta - 6 May 2018 - Soccerway". uk.soccerway.com. Retrieved 2019-11-24.
- "UFFICIALE: in rossoalabardato approda Thomas Bolis!" (in Italian). Triestina. 6 August 2018.
- "Game Report by Soccerway". Soccerway. 26 September 2018.
- "Südtirol vs. Triestina - 17 October 2018 - Soccerway". uk.soccerway.com. Retrieved 2018-10-23.
- "Italy - T. Bolis - Profile with news, career statistics and history - Soccerway". uk.soccerway.com. Retrieved 2019-06-12.
- "UFFICIALE - Piacenza, a centrocampo arriva Thomas Bolis". www.tuttoc.com (in Italian). Retrieved 2019-07-12.
- "Piacenza vs. Viterbese Castrense - 4 August 2019 - Soccerway". uk.soccerway.com. Retrieved 2019-08-05.
- "Arzignano Valchiampo vs. Piacenza - 25 August 2019 - Soccerway". uk.soccerway.com. Retrieved 2019-08-27.
- "Triestina vs. Piacenza - 8 September 2019 - Soccerway". uk.soccerway.com. Retrieved 2019-09-17.
- "Piacenza vs. Ravenna - 25 September 2019 - Soccerway". uk.soccerway.com. Retrieved 2019-10-02.
- "Arriva Thomas Bolis a rinforzare il centrocampo" (in Italian). Ravenna. 27 September 2020.
- "Legnago Salus vs. Ravenna - 4 October 2020 - Soccerway". uk.soccerway.com. Retrieved 2020-10-11.
- "E' già finito il campionato per Bolis, rottura del legamento crociato". il Resto del Carlino (in Italian). 1606549206149. Retrieved 2021-04-11. Check date values in: