Singapore shares extended their winning streak on Thursday, mirroring regional indices which responded to a US court ruling which blocked Donald Trump's global tariff blitz, triggering positive investor sentiment.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 3,896.40 and 3,921.17 throughout the day. It ended the session at 3,916.84, up 4.92 points or 0.13% compared to Wednesday's close.

In economic news, Singapore's Import Price Index fell 7.9% year on year in April, extending a 4.0% decrease in the preceding month, according to data released by the Department of Statistics.

Meanwhile, Singapore's Manufactured Products Price Index rose 3.1% year over year in April, extending a 3.0% gain in March, the Department of Statistics reported.

In company news, shares of Tiong Seng (SGX:BFI) surged nearly 17% at the close with the company mutually agreeing with the Tianjin Municipal Bureau of Planning and Natural Resources to terminate land use rights on state-owned land and buildings in Tianjin, China.

Singapore Paincare (SGX:FRQ) shares were up nearly 11% at the close after the company received an offer from Advance Bridge Healthcare for the acquisition of the entire share capital of the company at SG$0.16 per share.

Meanwhile, OxPay Financial (SGX:TVV) was down nearly 12% at the close with the company entering into a convertible loan agreement with Oxley Capital Management for a principal amount of up to SG$2.5 million.