Seoul Guarantee Insurance

Seoul Guarantee Insurance Company, commonly known as SGI, is a South Korean insurance company headquartered in Seoul. Its core business is guarantee insurance: it provides bonds and related guarantees that help individuals, companies, contractors, lenders, landlords, tenants, and other economic participants meet contractual or credit requirements. Rather than operating primarily as a conventional life insurer, SGI specializes in assuming specified credit and performance risks and compensating beneficiaries when insured obligations are not fulfilled. The company traces its origins to 1969, when Korea Fidelity and Surety Company, also known as Korea Guarantee Insurance, was established to provide guarantees for businesses and individuals. A second guarantee insurer, Hankuk Fidelity and Surety Company, entered the market in 1989. The two companies operated in competition until the Asian financial crisis of 1997 created severe stress in South Korea's financial system. They were merged in November 1998, forming Seoul Guarantee Insurance. The crisis left the newly combined company insolvent. A 1999 review by South Korea's Financial Supervisory Service reportedly found that liabilities exceeded assets by approximately 3.79 trillion won. Unpaid insurance claims were estimated at 3.4 trillion won, compared with liquid assets of about 1.08 trillion won. Because SGI was considered important to the availability of credit guarantees for lower-income households and small and medium-sized enterprises, the government chose rehabilitation rather than liquidation. The company received public support, including a 1.25 trillion-won investment from the Korea Deposit Insurance Corporation, while certain payments involving the Korea Asset Management Corporation were deferred. Its existing shares were written off and retired during the restructuring process. SGI's product scope includes contract and performance bonds, guarantees connected with mobile-phone installment payments, guarantees for mid-range-interest-rate loans, and housing-rental-loan guarantees. These products allow counterparties to transact with greater confidence when one party lacks sufficient collateral or when a contractual obligation needs third-party backing. The company is also active in international markets. It established SGI MENA in the Dubai International Financial Centre in 2022 and was operating in Vietnam by 2023. In 2023, the International Credit Insurance & Surety Association placed SGI among the world's four largest providers by original insurance premium revenue. The company remained majority-owned by the state-run Korea Deposit Insurance Corporation after its crisis-era rescue. KDIC explored a public listing in 2023 as a means of recovering part of the public funds committed to SGI, but postponed or withdrew the plan because of unfavorable market conditions. SGI subsequently listed on the Korea Exchange in March 2025, debuting on the KOSPI market. The offering enabled KDIC to recover approximately 181.5 billion won and represented the first initial public offering of a South Korean state-owned company in roughly 15 years, according to the cited reference material. The reference also reports that KDIC held approximately 83% of SGI after the listing. At the end of 2024, SGI's guarantee balance was reported at US$344.4 billion. In July 2025, the company was affected by a ransomware attack that disrupted most services for several days. SGI declined the attackers' demands, referred the matter to the Korea Financial Intelligence Unit, and restored core systems after four days. The company stated that it had found no evidence of a data breach. SGI therefore combines a domestically important public-policy role with a broad commercial guarantee franchise, while its post-2025 listed status gives the government an additional route for recovering capital invested during the financial crisis.

Seoul Guarantee Insurance originated in South Korea's guarantee-insurance sector. Korea Fidelity and Surety Company, also known as Korea Guarantee Insurance, was founded in 1969 to provide guarantees for individuals and businesses. Its role was to support transactions in which a beneficiary required assurance that a customer, contractor, borrower, or other obligor would perform a promised obligation. A second company, Hankuk Fidelity and Surety Company, was established in 1989. The two insurers created a competitive domestic market during the late 1980s and 1990s. The Asian financial crisis that began in 1997 placed both institutions under severe pressure. In November 1998, they were merged into Seoul Guarantee Insurance. The combined company was found to be insolvent during a 1999 due-diligence assessment by the Financial Supervisory Service. Reported liabilities exceeded assets by approximately 3.79 trillion won, while unpaid claims were estimated at 3.4 trillion won and liquid assets at only 1.08 trillion won. An evaluation committee associated with the Financial Services Commission concluded that recovery was possible with government support and better operating conditions. The government also considered SGI's guarantee function important because alternative sources of credit support for lower-income households and small and medium-sized enterprises were limited. In June 1999, SGI was designated a distressed financial company. The Korea Deposit Insurance Corporation invested 1.25 trillion won, and the Korea Asset Management Corporation deferred certain payments until March 2001. The company's outstanding shares were written off and retired as part of the restructuring. This rescue placed SGI under continuing state influence and made the company an important vehicle for maintaining access to guarantees after the financial crisis. Over time, SGI developed a broad portfolio of contract bonds and consumer- and business-oriented guarantees. Its offerings came to include mobile-phone installment payment guarantees, guarantees linked to mid-range-interest-rate loans, and housing rental loan guarantees, in addition to guarantees supporting commercial contracts and business activity. These products extend beyond traditional corporate surety by addressing everyday consumer finance and housing transactions. SGI also began expanding outside South Korea. It established SGI MENA in the Dubai International Financial Centre in 2022 and was operating in Vietnam by 2023. The International Credit Insurance & Surety Association ranked the company among the top four worldwide by original insurance premium revenue in 2023. The state retained a dominant ownership position through the Korea Deposit Insurance Corporation. In 2023, KDIC considered a stock-market listing as a way to recover approximately 5 trillion won from roughly 10 trillion won in public funds injected during the crisis-era rescue. The proposed sale was not completed at that time because market conditions were considered unfavorable. SGI ultimately listed on the Korea Exchange's KOSPI market in March 2025. The offering reportedly generated about 181.5 billion won for KDIC and was described as the first listing of a South Korean state-owned company in 15 years. SGI's reported guarantee balance reached US$344.4 billion at the end of 2024. The company's modern profile combines a large domestic guarantee franchise, international activity, public-sector ownership, and a policy role in supporting credit and contractual reliability. In July 2025, a ransomware attack disrupted most of its services for several days. The company rejected the ransom demand, involved financial-intelligence authorities, restored core systems after four days, and said that it had found no evidence that customer data had been breached.

1. 2025KOSPI listing

   SGI listed on the Korea Exchange's KOSPI market in March, reportedly returning approximately 181.5 billion won to KDIC.

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2. 2023Proposed public listing delayed

   KDIC explored a listing to recover crisis-era public funds but withdrew or postponed the plan because of unfavorable market conditions.

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3. 2022SGI MENA established in Dubai

   SGI launched a subsidiary in the Dubai International Financial Centre to support activity in the Middle East and North Africa.

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4. 1999SGI placed under financial distress measures

   A regulatory review identified severe insolvency, after which SGI was designated a distressed financial company and became the subject of a government-backed rescue.

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5. 1998Merger creates Seoul Guarantee Insurance

   The two major guarantee insurers were merged in November 1998 amid the aftermath of the Asian financial crisis.

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6. 1989Hankuk Fidelity and Surety Company established

   A second South Korean guarantee insurer entered the market, creating competition with the earlier company.

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7. 1969Korea Fidelity and Surety Company founded

   The predecessor to Seoul Guarantee Insurance was established to provide guarantee insurance for individuals and businesses.

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A large, state-backed South Korean specialist in guarantee insurance and surety products, positioned as financial infrastructure for contractual performance, consumer credit access, housing rental finance, and small-business activity.

• Contract and performance guarantee bondsSurety insurance

  Guarantees designed to support commercial contracts by protecting a beneficiary when an insured party fails to meet specified contractual, payment, or performance obligations. They are central to SGI's traditional role in South Korea's business and economic infrastructure.

• Mobile-phone installment payment guaranteesConsumer credit guarantee

  Guarantees associated with installment purchases of mobile phones. The product supports access to device financing by providing a form of credit assurance to the relevant counterparty.

• Mid-range-interest-rate loan guaranteesLoan guarantee

  Guarantees connected with loans carrying mid-range interest rates. These products extend SGI's credit-support role beyond corporate contracts and help eligible borrowers obtain financing under defined guarantee conditions.

• Housing rental loan guaranteesHousing finance guarantee

  Guarantees supporting housing-rental finance and related obligations. They are part of SGI's consumer-facing business and reflect the company's role in facilitating access to housing-related credit in South Korea.

• 2025Public-market listingM&A

  KDIC sought a route to recover part of the public funds used in SGI's crisis-era rescue after an earlier listing plan was delayed by market conditions.

  What changed. SGI listed on the Korea Exchange's KOSPI market in March 2025.

  Aftermath. KDIC reportedly recovered approximately 181.5 billion won, while remaining the dominant shareholder.

  Reported proceeds recovered by KDIC. 181.5 billion won (March 2025)

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• 1999Government-backed rehabilitation instead of liquidationStrategy

  Regulators determined that SGI was insolvent after the Asian financial crisis but that its guarantee function remained important for households and small and medium-sized enterprises.

  What changed. The government designated SGI a distressed financial company and supported its recovery through KDIC investment and other restructuring measures.

  Aftermath. SGI continued operating as a major guarantee provider under dominant state ownership.

  KDIC investment. 1.25 trillion won (1999)

  Source

• 2025Ransomware attack and service outageControversy

  SGI suffered a ransomware attack in July 2025 that disrupted most services for several days. The company refused the ransom demand, referred the matter to the Korea Financial Intelligence Unit, and restored core systems after four days. SGI stated that it had found no evidence of a data breach.

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• 2026Korea Deposit Insurance Corporation sells additional SGI stake

  The Korea Deposit Insurance Corporation reportedly sold a 4.3% stake in SGI on March 26, 2026, as part of its continuing effort to recover public support provided during the insurer's financial rehabilitation.

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• 2025Seoul Guarantee Insurance lists on the KOSPI market

  SGI debuted on the Korea Exchange's KOSPI market in March 2025. The listing reportedly allowed the Korea Deposit Insurance Corporation to recover approximately 181.5 billion won and made SGI the first South Korean state-owned company to go public in about 15 years.

  M&AOther
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• 2025Seoul Guarantee Insurance completes KOSPI listing

  SGI listed on the Korea Exchange's KOSPI market in March 2025. The offering was part of efforts by the Korea Deposit Insurance Corporation to recover public funds committed during the company's earlier financial rescue.

  OtherM&A
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• 2023KDIC explores an SGI listing to recover crisis-era public funds

  The Korea Deposit Insurance Corporation sought to list SGI to recover part of the public funds injected during the company's post-crisis rescue. The plan was withdrawn or postponed amid unfavorable market conditions.

  Other
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1. Seoul Guarantee Insurance