In January, a lower court had sentenced Yoon to five years in prison after convicting him on most charges.
In April, an appeals court upheld the ruling, added a guilty verdict over the misleading press release, and raised the sentence to seven years.
Both prosecutors and Yoon’s legal team had appealed to the Supreme Court, whose rulings are final.
The court said it would livestream Thursday’s hearing after granting prosecutors‘ request.
In a separate case, a court handed Yoon a 30-year prison sentence for sending drones into North Korea to „manufacture“ a crisis ahead of his martial law bid.
The former president has insisted his martial law declaration was „solely for the sake of the nation“.
In 2024, he also defended it as necessary to root out „anti-state forces“ and quash what he claimed were threats from North Korea.
Yoon was ousted over the martial law bid in April 2025, triggering elections that gave the presidency to Lee Jae Myung of the centre-left Democratic Party.
Several senior officials in Yoon’s administration are also awaiting Supreme Court rulings in separate cases related to the martial law, including former prime minister Han Duck-soo and his interior minister Lee Sang-min.