South Korea’s former first lady will serve a four-year prison sentence after an appellate court significantly increased her corruption conviction, marking a dramatic fall from grace for someone who once resided at the presidential residence with her husband.
Kim Keon Hee, 53, spouse of ousted ex-President Yoon Suk Yeol, saw her sentence raised from 20 months to four years on April 28, 2026, when the Seoul High Court reversed a lower court’s dismissal of stock manipulation allegations and upheld her bribery conviction related to gifts from the Unification Church. Additionally, the court imposed a 50 million won financial penalty and ordered seizure of a Graff diamond necklace.
“The court sentences the defendant to four years in prison and imposes a 50 million won fine,” the judicial panel stated during a public verdict hearing.
Sentence Substantially Increased Through Appeal
The enhancement represented a significant jump from the ruling issued on Jan. 28, 2026, when Judge Woo In-sung at the Seoul Central District Court imposed a 20-month term for accepting two Chanel handbags and a diamond pendant from the Unification Church. The lower court had dismissed the more significant stock manipulation allegation and the allegation of receiving complimentary polling data from a political intermediary, noting lack of sufficient proof. Both prosecutors, who requested a 15-year sentence, and Kim filed appeals.
The appellate judges determined that Kim had engaged in price manipulation of thinly traded Deutsch Motors shares in concert with various market participants. The court also established that Kim understood the Unification Church, which furnished approximately 80 million won in presents from April through July 2022, was seeking political assistance for its international operations in exchange.
“She has compromised the integrity of governance and created divisions in the general population regarding matters of national importance,” the presiding judge remarked.
Kim’s legal team announced plans to challenge the decision at the Supreme Court, and on May 4, 2026, she formally submitted her petition. The special counsel’s office subsequently escalated its own Supreme Court appeal the following day, seeking harsher penalties — placing both parties in South Korea’s supreme judicial body. The appellate tribunal did acquit Kim of separate electoral law infringement accusations, though it maintained her culpability in illegally endorsing a candidate during a 2022 special election.
From Presidential Residence to Incarceration
Kim’s transition from first lady to prisoner has occurred rapidly. Since August 2025, when an arrest warrant received judicial approval, she has been confined, and she offered a public statement during her interrogation that same month.
“I deeply regret that someone as insignificant as myself has created difficulty for the nation,” she stated at that moment.
The controversies surrounding her preceded her husband’s removal from power. A covert recording showing Kim receiving a luxury Dior handbag became public in 2023, damaging Yoon’s reputation after his election as president the prior year. This incident contributed to his People Power Party’s defeat in the April 2024 legislative elections. The governing opposition introduced three legislative proposals requiring inquiries into Kim’s activities. Yoon rejected all three. His ultimate rejection occurred in November 2024, just before he astonished the nation by instituting martial law.
In 2025, Sookmyung Women’s University revoked the art education credential Kim obtained in 1999, following an ethics review that determined she had engaged in academic dishonesty in her postgraduate work. Concurrent investigations regarding her interactions with the Unification Church also resulted in the detention of religious leader Han Hak-ja, who has disputed allegations that he ordered the group to offer Kim payments.
A Pair Convicted Simultaneously
The January decision established Kim and Yoon as the inaugural former presidential couple in South Korea to receive criminal convictions concurrently. Yoon initially received a five-year sentence for misusing authority and obstructing judicial proceedings stemming from his December 2024 martial law declaration. During February 2026, he received a life sentence in an unrelated matter. Officials are separately pursuing capital punishment against him for uprising-related offenses. Former Prime Minister Han Duck-soo was convicted of uprising and given a 23-year sentence.
Yoon was officially stripped of his position in April 2025 and faces multiple ongoing legal proceedings. He has contested his convictions, maintaining that his actions served the nation’s welfare and asserting that political rivals conspired against him. The decision has intensified national dialogue regarding the pair, now broadly held accountable for the country’s most significant recent governmental upheaval.
Outside the Seoul High Court following the appellate verdict, a modest assembly of supporters congregated carrying placards and fabric items displaying messages including “Yoon, again” and “Make Korea Great Again,” mirroring language employed by President Trump that Yoon’s backers have progressively embraced.
Appellate Judge Discovered Deceased
Shin Jong-o, the judicial officer who oversaw Kim’s appellate hearing and produced the stricter verdict, was discovered unresponsive around 1 a.m. inside the Seoul High Court facility, according to a representative from Seocho district law enforcement. Shin was transported to a medical facility where he was declared deceased.
“There are no indicators suggesting criminal involvement in the passing,” the law enforcement representative noted. Though news outlets mentioned that Shin had composed a message, the representative clarified that nothing was discovered. Shin’s “family members are devastated by this tragedy” and have requested respect for their privacy, officials stated.
Shin was responsible for announcing from the courtroom in April 2026 that Kim had “neglected to take responsibility for her actions and has persistently offered justifications” — language that now carries weight in a matter progressing toward ultimate judicial determination.