Singapore shares closed higher on Monday, tracking regional gains as the US continues its push for the second phase of its peace talks with Iran in Islamabad.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 4,978.66 and 5,012.59 throughout the day. It ended the session at 5,004.07, up 6.14 points or 0.1% compared to Friday's close.

Iranian officials are yet to commit their participation ahead of the ceasefire deadline, with mediators eyeing a memorandum of understanding between the two parties.

On the corporate front, share of H2G Green (SGX:5AI) surged over 11% at the close, with the company targeting to raise over SG$3.6 million through the subscription of around 516.6 million shares at SG$0.00702 per share to several subscribers.

Southern Alliance Mining (SGX:QNS) was up over 2% as it signed a non-binding agreement with Brazilian Critical Minerals (ASX:BCM) to evaluate opportunities for the development and distribution of rare earth products.

Meanwhile, CapitaLand Integrated Commercial Trust (SGX:C38U) signed a put-and-call option agreement to sell Asia Square Tower 2 to IOI Marina View for SG$2.48 billion.