[10] Later on 10 March, Reginaldo scored his first Albanian Superliga hat-trick in the 4–2 home win versus Flamurtari Vlorë;[11] the feat lifted his tally to 11 goals, breaking his previous record and also reaching double-figures for the first time in career.
[12] On 18 April, Reginaldo scored the decisive away goal in the 1–1 draw at Kukësi in the second leg of cup's semi-final to book Laçi's spot at the final once again.
[18] Despite the elimination, the team continued their European campaign in the 2018–19 UEFA Europa League, playing in the third qualifying round against Georgia's Torpedo Kutaisi.
He initially did not travel with the team to play in the first leg at Ramaz Shengelia Stadium along with Valon Ethemi, Edis Maliqi and Faton Maloku after the Georgian authorities refused their visas.
[23] Reginaldo got his first Kukësi goals in the second leg on 16 August, netting from two penalty kicks to give his team the 2–0 win at Elbasan Arena which was not enough to go through.
[25] He scored his first league goals for the club on 2 September in form of a hat-trick, his second in the Albanian Superliga, against Tirana for a 3–1 win at Loro Boriçi Stadium.
[26] In the final matchday of the championship, Reginaldo scored two late goals against Kastrioti Krujë to give Kukësi a runner-up finish in league.