After the addition of Kloten's Jordann Bougro, Lukas Lhotak is the second player with experience in the National League who is going to reinforce HC Sierre. Between 2013 and 2020, Lhotak suited up for HC Ambrì-Piotta, HC Fribourg-Gottéron and the SC Rapperswil-Jona Lakers.
In the past two seasons, the Czech forward with a Swiss license has worn the jersey of EHC Olten. In 124 games for them, he recorded 78 points for them (55 goals).