Material event report (bonus issue)

What happened

Material event report / Matters subject to KRX reporting obligation To the Financial Services Commission / Korea Exchange September 29, 2026 Company name: Protia Co., Ltd. CEO: Lim Guk-jin Head office address: Room 702, Gangseo Hangang Xi Tower A, 401 Yangcheon-ro, Gangseo-gu, Seoul (Phone) 02-6968-5277 (Website) http://www.protia.co.kr Preparer: (Title) Executive Managing Director (Name) Son Soon-jin (Phone) 02-6968-5277

Bonus issue decision

1. Type and number of new shares: common shares 6,439,857; other class shares - 2. Par value per share (KRW): 500 3. Total shares issued before the capital increase: common shares 12,879,715; other class shares - 4. New-share allotment record date: October 14, 2026 5. Number of new shares allotted per share: common shares 0.5; other class shares - 6. Dividend record date for the new shares: January 1, 2026 7. Expected date of delivery of new share certificates: - 8. Expected new share listing date: November 5, 2026 9. Board resolution date (decision date): September 29, 2026 - Attendance of independent (outside) directors: present 2; absent - - Attendance of auditor (audit committee member): present * An independent director applies to listed companies and an outside director to unlisted companies. 10. Other matters for reference in investment decisions a. Bonus issue allotment details: common shares - before the bonus issue 12,879,715; bonus allotment 6,439,857; after the bonus issue 19,319,572. Total: before 12,879,715; allotment 6,439,857; after 19,319,572. b. Source of funding for the new shares: KRW 3,219,928,500 from additional paid-in capital c. New-share allotment and handling of fractional shares: New shares will be allotted at a ratio of 0.5 shares (50%) per share held to shareholders recorded in the shareholder registry as of the record date (October 14, 2026); any resulting fraction of less than one share will be paid in cash based on the closing price on the first day of trading of the new shares. d. "7. Expected date of delivery of new share certificates" above is omitted because it is not applicable under the electronic securities system. e. "8. Expected new share listing date" above may change through consultation with relevant authorities; other detailed matters concerning the new share issuance are delegated to the CEO. Matters concerning other class shares: basis under the articles of incorporation -; content of the shares -; other -