KT Corporation (KT) details board changes after outside director exit resignation

Rhea-AI Filing Summary

KT Corporation reported the early resignation of one of its outside directors, Seung Ah Theresa Cho. The change in board composition is stated to have taken effect on March 26, 2024, pursuant to Article 542-8(2) of the Korean Commercial Act.

Before the change, KT had 10 registered directors, including 8 outside directors, representing 80.0% of the board. After the resignation, the company lists 9 registered directors and 7 outside directors, so outside directors now account for 77.8% of the board.

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number 1-14926

KT Corporation

(Translation of registrant’s name into English)

90, Buljeong-ro,

Bundang-gu, Seongnam-si,

Gyeonggi-do,

Korea

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒   Form 40-F ☐

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: December 17, 2025
KT Corporation
By:		/s/ Jaegil Choi
Name:		Jaegil Choi
Title:		IRO
By:		/s/ Sanghyun Cho
Name:		Sanghyun Cho
Title:		IR Team Leader

Early Resignation of Outside Director

1.  Date of Change in Outside Director				March 26, 2024
2.  Number of Outside Directors Affected				1 (Early Resignation)
3.  Status Prior to the Change		Number of Registered Directors		10
		Number of Outside Directors		8
		Percentage of Outside Directors		80.0
4.  Status Subsequent to the Change		Number of Registered Directors		9
		Number of Outside Directors		7
		Percentage of Outside Directors		77.8
5.  Other Information Material to Investors				Outside director Seung Ah Theresa Cho ceased to hold office pursuant to Article 542-8(2) of the Korean Commercial Act.

[Details of Early Resignation of Outside Director]

• Name: Seung Ah Theresa Cho

• Date of Birth: October 1967

• Gender: Female

• Date of Appointment: June 30, 2023

• Initial Term: 3 years

• Date of Termination of Directorship: March 26, 2024

• Type of Termination of Directorship: Termination by operation of law

• Reason: Confirmation of a statutory disqualification under the Korean Commercial Act

FAQ

What board change did KT (KT) report in this disclosure?

KT reported the early resignation of outside director Seung Ah Theresa Cho, which changed the composition of its board of directors.

When did the early resignation at KT take effect?

The early resignation of outside director Seung Ah Theresa Cho took effect on March 26, 2024.

How did KT's total number of registered directors change?

KT states that the number of registered directors changed from 10 before the resignation to 9 after the resignation.

How did the number and percentage of outside directors at KT change?

According to the disclosure, outside directors decreased from 8 to 7, and their share of the board moved from 80.0% to 77.8%.

Which outside director resigned early from KT's board?

The early resignation involved outside director Seung Ah Theresa Cho, who ceased to hold office as described in the filing.

Under what legal basis did KT say the outside director ceased to hold office?

KT states that outside director Seung Ah Theresa Cho ceased to hold office pursuant to Article 542-8(2) of the Korean Commercial Act.

How many outside directors remain on KT's board after the change?

After the change, KT reports having 7 outside directors on a board of 9 registered directors.