Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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- Peter Lynch
What is insider trading>>
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13G
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UNDER THE SECURITIES EXCHANGE ACT OF 1934
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(Amendment No. 1)*
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Exicure, Inc. (Name of Issuer) |
Common Stock, par value $0.0001 per share (the "Common Stock") (Title of Class of Securities) |
30205M309 (CUSIP Number) |
12/08/2025 (Date of Event Which Requires Filing of this Statement) |
| Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |
 Rule 13d-1(b)
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 Rule 13d-1(c)
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| Rule 13d-1(d)
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SCHEDULE 13G
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| CUSIP No. | 30205M309 |
| 1 | Names of Reporting Persons
Sangsangin Investment & Securities Co., Ltd. | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
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| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
KOREA, REPUBLIC OF
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
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| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
0.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
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| 11 | Percent of class represented by amount in row (9)
0.0 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13G
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| CUSIP No. | 30205M309 |
| 1 | Names of Reporting Persons
Sangsangin Co., Ltd. | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
KOREA, REPUBLIC OF
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
0.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
0.0 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13G
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| CUSIP No. | 30205M309 |
| 1 | Names of Reporting Persons
Jun Won Yoo | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
| ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
KOREA, REPUBLIC OF
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
0.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
0.0 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13G
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| Item 1. | ||
| (a) | Name of issuer:
Exicure, Inc. | |
| (b) | Address of issuer's principal executive offices:
400 Seaport Court, Suite 102, Redwood City, CA 94063 | |
| Item 2. | ||
| (a) | Name of person filing:
The names of the persons filing this statement on Schedule 13G are (collectively, the "Reporting Persons"): Sangsangin Investment & Securities Co., Ltd., a corporation formed under the laws of the Republic of Korea ("Sangsangin"); Sangsangin Co., Ltd., a corporation formed under the laws of the Republic of Korea ("Sangsangin Ltd."); and Jun Won Yoo, a citizen of the Republic of Korea ("Mr. Yoo"). | |
| (b) | Address or principal business office or, if none, residence:
The principal business address of each of the Reporting Persons is 22F, parc.1, 108, Yeoui-daero, Yeongdeungpo-gu, Seoul, Republic of Korea. | |
| (c) | Citizenship:
Please see disclosure in Item 2(a). | |
| (d) | Title of class of securities:
Common Stock, par value $0.0001 per share (the "Common Stock") | |
| (e) | CUSIP No.:
30205M309 | |
| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: | |
| (a) | Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
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| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
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| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution: | |
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
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| Item 4. | Ownership | |
| (a) | Amount beneficially owned:
As of December 8, 2025, Sangsangin beneficially owned 0 shares of Common Stock. Sangsangin Ltd., as the majority shareholder of Sangsangin, may be deemed to have beneficially owned the 0 shares of Common Stock beneficially owned by Sangsangin. Mr. Yoo, as the chief executive officer of Sangsangin Ltd., may be deemed to have beneficially owned the 0 shares of Common Stock beneficially owned by Sangsangin Ltd. | |
| (b) | Percent of class:
The following percentage is based on 6,373,869 shares of Common Stock outstanding as of November 3, 2025, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on November 7, 2025. As of December 8, 2025, the Reporting Persons may be deemed to have beneficially owned approximately 0% of the outstanding Common Stock. %
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| (c) | Number of shares as to which the person has:
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| (i) Sole power to vote or to direct the vote:
See Cover Pages Items 5-8. | ||
| (ii) Shared power to vote or to direct the vote:
See Cover Pages Items 5-8. | ||
| (iii) Sole power to dispose or to direct the disposition of:
See Cover Pages Items 5-8. | ||
| (iv) Shared power to dispose or to direct the disposition of:
See Cover Pages Items 5-8. | ||
| Item 5. | Ownership of 5 Percent or Less of a Class. | |
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Ownership of 5 percent or less of a class
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| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. | |
Not Applicable
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| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. | |
Not Applicable
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| Item 8. | Identification and Classification of Members of the Group. | |
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
See Exhibit A of the Reporting Persons' 13G filed with the Securities and Exchange Commission on December 23, 2024. | ||
| Item 9. | Notice of Dissolution of Group. | |
Not Applicable
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| Item 10. | Certifications: |
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. |
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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Comments accompanying signature: *The Reporting Persons disclaim beneficial ownership in the shares of Common Stock reported herein except to the extent of their pecuniary interest therein. The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature. Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See s.240.13d-7 for other parties for whom copies are to be sent. Attention. Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001). See Exhibit A of the Reporting Persons' 13G filed with the Securities and Exchange Commission on December 23, 2024.