SANGSANGIN INVESTMENT & SECURITIES CO., LTD. - 08 Dec 2025 Form 4 Insider Report for EXICURE, INC. (XCUR)

Reporting relationship: 10%+ Owner
Issuer ticker: XCUR
Reported as of: 08 Dec 2025
Net transaction value: -$3,774,322
SEC form: 4
Accepted by SEC: 10 Dec 2025, 20:51:19 UTC
Prior SEC filing: 23 Dec 2024
Source filing: View source filing
Reporting owner signature: Sangsangin Investment & Securities Co., Ltd. By: /s/ Won Ju Title: Chief Executive Officer

Key filing fact

SANGSANGIN INVESTMENT & SECURITIES CO., LTD. filed Form 4 for EXICURE, INC. (XCUR) on 10 Dec 2025.

Key facts

This page summarizes SANGSANGIN INVESTMENT & SECURITIES CO., LTD.'s Form 4 filing for EXICURE, INC. (XCUR).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 10 Dec 2025, 20:51.

Change

Previous filing in this sequence was filed on 23 Dec 2024.
Current net transaction value: -$3,774,322.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002049712 Primary reporting owner

SANGSANGIN INVESTMENT & SECURITIES CO., LTD.

Relationship: 10%+ Owner
Address: 22F, PARC.1, 108, YEOUI-DAERO, YEONGDEUNGPO-GU, SEOUL, KOREA, REPUBLIC OF
Signature: Sangsangin Investment & Securities Co., Ltd. By: /s/ Won Ju Title: Chief Executive Officer
Signature date: 10 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

XCUR transaction

Common Stock

Sale

Transaction value: $3,774,322
Shares: -433,332
Change %: -100%
Price: $8.71
Shares after: 0
Date: 08 Dec 2025
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Sangsangin Co., Ltd., a corporation formed under the laws of the Republic of Korea, as the majority shareholder of the Reporting Person, may be deemed to beneficially own the shares reported by the Reporting Person hereunder. Mr. Jun Won Yoo, as the chief executive officer of Sangsangin Co., Ltd., may be deemed to beneficially own the shares beneficially owned by Sangsangin Co., Ltd.

Footnote F2

The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein. The filing of this Form 4 shall not be deemed an admission that the Reporting Person is, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owner of any securities of the Issuer it does not directly own.