Treasury share disposal: results report

What happened

KT Corporation / Treasury Share Disposal Results Report / 6.2

To the Governor of the Financial Supervisory Service, July 24, 2026 Company name: KT Corporation | CEO: Park Yun-young Head office: 90 Buljeong-ro, Bundang-gu, Seongnam-si, Gyeonggi-do Phone: 070-4193-4036; Website: http://www.kt.com Preparer: Finance Division, Funding/IR, Kim Sun-wook, Phone 070-4193-4036

1. Name and address of issuer: a. Name: KT Corporation b. Address: 90 Buljeong-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 2. Disposal report details: a. Filing date of material event report on disposal: July 14, 2026 b. Disposal period: July 24, 2026~July 24, 2026 c. Type/number of shares reported for disposal: registered common shares, 3,109 shares 3. Disposal details (Unit: KRW, shares) Date 2026-07-24; type common shares; order quantity 3,109; disposed 3,109; price per share KRW 54,100; total disposal amount KRW 168,196,900; recipient: executives/employees holding restricted stock units (RSU); brokerage: NH Investment & Securities, registration no. 00120182 Total: disposed 3,109; price per share KRW 54,100; total amount KRW 168,196,900 ※ Price per share is the closing price on the disposal date. 4. Consistency between report and actual disposal: common shares planned 3,109, actual 3,109 - consistent, no discrepancy 5. Treasury share holdings after disposal [as of July 24, 2026] (Unit: KRW million, shares, %) Holdings under Article 165-3 (A): common shares 10,815,473, 4.29%, total value KRW 456,261 million Holdings under trust contract per Article 165-3 (B): common shares 3,421,295, 1.36%, contract amount KRW 250,000 million Total (A+B): common shares 14,236,768, 5.65%, amount KRW 706,261 million ※ Trust-contract holdings are as of settlement date. ※ The company has been acquiring treasury shares through a treasury-share trust contract from March 10, 2026 to September 9, 2026; accordingly, the "holdings under trust contract" figure has changed since the treasury share disposal decision was disclosed on July 14, 2026.