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Table of Contents ☐ ☑ ☐ ㅁ As filed with the Securities and Exchange Commission on April 30 , 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 Form 20 - F REGISTRATION STATEMENT PURSUANT TO SECTION 12 ( b ) OR ( g ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report . For the transition period from to KT Corporation Commission file number 1-14926 KT Corporation ( Exact name of Registrant as specified in its charter ) ( Translation of Registrant's name into English ) KT Gwanghwamun Building East 33 , Jong - ro 3 - Gil , Jongno - gu 03155 Seoul , Korea ( Address of principal executive offices ) Young - Jin Kim KT Gwanghwamun Building East 33 , Jong - ro 3 - Gil , Jongno - gu 03155 Seoul , Korea The Republic of Korea ( Jurisdiction of incorporation or organization ) Telephone : + 82-31-727-0114 ; E - mail : ktir@kt.com ( Name , telephone , e - mail and / or facsimile number and address of company contact person ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act . Title of each class American Depositary Shares , each representing one - half of one share of ordinary share Ordinary share , par value # 5,000 per share * Trading symbol KT KT Name of each exchange on which registered New York Stock Exchange , Inc. New York Stock Exchange , Inc. * Securities registered or to be registered pursuant to Section 12 ( g ) of the Act . None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act . None As of December 31 , 2020 , there were 241,842,130 ordinary shares , par value # 5,000 per share , outstanding ( not including 19,269,678 ordinary shares held by the registrant as treasury shares ) Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes ☑ No ☐ If this report is an annual or transition report , indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934. Yes ☐ No ☑ Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes ☑ No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes ☑ No ☐ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer ☑ Accelerated filer ☐ Non - accelerated filer ☐ Emerging growth company ☐ If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . ☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Yes ☑ No ☐ Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing . U.S. GAAP ☐ IFRS ☑ Other If " Other " has been checked in response to the previous question , indicate by check mark which financial statement item the registrant has elected to follow . Item 17 ☐ ☐