Young Seung Ko was named Chief Operating Officer of Exicure, Inc. As of November 6, 2026, Exicure, Inc. has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from April 10, 2026 to June 30, 2026, naming 3 appointments (Form 8-K, April 10, 2026).
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Exicure, Inc. reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-04-10 to 2026-06-30. They name 2 people. Every row below is cited to the filing it comes from, and this page adds each new change as Exicure, Inc. files it.
Also on the record for Exicure, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| July 17, 2026 | Stake report, Schedule 13D/A, by Exicure HiTron Inc. | 34.9% of the class | 5%+ stakes | Source |
| January 21, 2026 | Stake report, Schedule 13D/A, by Exicure HiTron Inc. | 25.1% of the class | 5%+ stakes | Source |
| January 20, 2026 | Stake report, Schedule 13D/A, by Exicure HiTron Inc. | 29.2% of the class | 5%+ stakes | Source |
| January 9, 2026 | Stake report, Schedule 13D/A, by Exicure HiTron Inc. | 40.7% of the class | 5%+ stakes | Source |
| December 10, 2025 | Stake report, Schedule 13G/A, by Sangsangin Investment & Securities Co., Ltd. | — | 5%+ stakes | Source |
| September 22, 2025 | Stake report, Schedule 13D/A, by Exicure HiTron Inc. | 52.8% of the class | 5%+ stakes | Source |
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More on Exicure, Inc. and the records around it.
Exicure, Inc. elsewhere on the record
- 5%+ stake filings Jul 2026
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-06-30 | Reported | not named in the filing | 8-K, 2026-06-30 | ||
| 2026-04-10 | In | Director | 2026-04-08 | 8-K, 2026-04-10 | |
| 2026-04-10 | In | 8-K, 2026-04-10 | |||
| 2026-04-10 | In | Chief Operating Officer | 8-K, 2026-04-10 |
Who leads Exicure, Inc., as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Operating Officer: Young Seung Ko, appointed (filed 2026-04-10).
- Director: Yoontae Han, appointed, effective 2026-04-08 (filed 2026-04-10).
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Reported
The resignation of Mr. Ham did not result from any disagreement regarding any matter related to the operations, policies or practices of the Company.
- Director Resignation, Board Size Increase, Director Appointments, and Formation of Compensation Committee On June 24, 2026, Ham Jung Kyu resigned from the Board of Directors (the "Board") of Exicure, Inc. (the "Company"), effective as of June 30, 2026.
- On June 24, 2026, the Board approved an increase in the size of the Board from five (5) directors to six (6) directors, effective as of June 30, 2026, and approved a corresponding increase in the number of Class III directors.
- To fill the vacancy created by the resignation of Ham Jung Kyu, the Board appointed Go Jin Young to serve as a Class III director of the Company, effective as of June 30, 2026.
- To fill the newly created directorship resulting from the increase in the size of the Board, the Board appointed Han Eui Seok to serve as a Class III director of the Company, effective as of June 30, 2026.
- The Board determined that Mr. Han qualifies as an independent director under Nasdaq Listing Rule 5605(a)(2).
- The Board determined that Mr. Go does not qualify as an independent director under Nasdaq Listing Rule 5605(a)(2) due to his anticipated role as a non-independent director of the Company.
- In connection with the appointments, the Board approved the formation of a Compensation Committee, effective as of June 30, 2026, and appointed Mr. Han to serve as Chair of the Compensation Committee and Dongho Lee to serve as a member.
Appointed: Yoontae Han, Director, effective 2026-04-08
Director Appointment and Appointment of Chair of the Audit Committee On April 8, 2026, the Board of Directors (the "Board") of Exicure, Inc. (the "Company") appointed Yoontae Han to serve as a director of the Company, effective as of April 8, 2026, until a successor has been duly elected and qualified or until his earlier death, resignation or removal, as a director of the Company.
Appointed: Yoontae Han
The Board also appointed Mr. Han to the Audit Committee of the Board.
Appointed: Young Seung Ko, Chief Operating Officer
Executive Management Change On April 9, 2026, the Company appointed Young Seung Ko as the Chief Operating Officer of the Company.
- In addition, the Board appointed Dongho Lee, a current member of the Audit Committee, to serve as Chair of the Audit Committee.
- For his services on the Board, Mr. Han will receive an annual retainer of $20,000.
- Mr. Ko, age 50, is an executive and director with over 20 years of global experience in enterprise software, data infrastructure, and public company operations.
- From September 2022 to March 2025, Mr. Ko served as Chief Executive Officer and Director of AGEDB Technology Ltd. (TSXV: AGET), a Canada-based hybrid database technology company, and has served as a Director since March 2025.
- During his tenure as CEO, he led the company through its public listing on the TSX Venture Exchange and oversaw financial reporting, internal controls, and corporate governance.
- From October 2020 to September 2024, Mr. Ko served as Director of Global Operations at Bitnine Global Inc., a U.S.-based database technology company, where he was responsible for global business operations, including business development, technical delivery, and partner ecosystem management.
- Mr. Ko has held senior leadership roles in global operations, research and development, and business development, managing cross-border teams and enterprise technology initiatives.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.