In the first season, coached by Cristian Ungureanu, the team's goal was promotion to Liga III, but the City Hall team, after finished 1st in the regular season, lost the county league final with Hușana Huși 0–1 on aggregate.[2]
CSM Vaslui, coached by Ionuț Chiochiu, won the 2020–21 season of Liga IV – Vaslui County, that was played, due to the high costs generated by the coronavirus pandemic, in a short tournament with just five teams, qualifying for the promotion/relegation play-off, but lost in front of Liga III side CSM Pașcani (1–2 at Pașcani and 0–5 at Vaslui).
In order to distance itself and avoid any confusion with the FC Vaslui brand, from which it took over the place in the fourth league and, in order not to have to pay its debts, the team financially supported by the Vaslui City Hall was reorganized and started again from the fifth league.[4]
Winning the Series I and the promotion play-off of the 2021–22 Liga V – Vaslui County, "Vasluienii" returned after one season to Liga IV.[5][6]
In the following season, with Gabriel Crăciun as player-coach, assisted by Adrian Racovițan and with players such as Florinel Petrariu, Ionuț Codreanu, Ciprian Petruț, Sergiu Gîrdea, Marius Bîrsan, Nicolae Olaru, Adrian Neniță, Sorin Jitaru, Valerică Joc, Robert Chirilă, Vasile Buhăescu, Robert Rusu, Sebastian Țârțârău (cpt.), Andrei Covăcel, Bogdan Cernat among others, CSM Vaslui won the Liga IV – Vaslui County and the promotion play-off against Moldova Cristești, the winner of Liga IV – Iași County (3–1 at Vaslui and 4–2 at Cristești), promoted for the first time to Liga III.[7]