Singapore shares continued their ascent on Tuesday, tracking regional gains as governments look to wrap up tariff deals with the US.

The Straits Times Index, a key benchmark for the Singapore Exchange, ranged between 4,109.76 and 4,129.77 throughout the day. It ended the session at 4,119.82, up 10.61 points or 0.26% compared to Monday's close.

In company news, shares of H2G Green were up nearly 13% at the close after its subsidiary, GasHubUnited Utility, entered into two MoUs for two projects with an aggregate minimum liquefied natural gas power generation capacity of 332 megawatts in the Philippines.

King Wan was up over 5% after securing mechanical and electrical contracts worth around SG$28.3 million.

Meanwhile, shares of BRC ASIA LIMITED were up over 4% at the close, with the company securing contracts worth SG$570 million through a joint venture between the Singapore branch of China Communications Construction and Obayashi Singapore.

STI up 0.3%; Nio up 5%; SATS up 4%; Seatrium, YZJ Shipbldg up 3%; ST Engineering up 2%; SIA, SingPost up 1%.