Treasury share disposal.

Material Report (Treasury Stock Disposition Decision) 6.4 Nanosinmaterial Co., Ltd. Material Report / Exchange Reporting Obligation Matter Financial Services Commission / Korea Exchange September 18, 2026 Company Name: Nanosinmaterial Co., Ltd. Representative Director: Park Jang-woo Head Office Address: 78 Geumho-angol-gil, Bugang-myeon, Sejong Special Self-Governing City (Telephone) 044-275-6966 (Website) http://www.anapro.com Responsible Preparer: (Title) Senior Managing Director (Name) Kim O-dong (Telephone) 042-710-6966

Treasury Stock Disposition Decision

1. Planned Disposition Stock (shares) Common Stock: 5,913 Other Stock: -

2. Disposition Target Stock Price (KRW) Common Stock: 51,600 Other Stock: -

3. Planned Disposition Amount (KRW) Common Stock: 305,110,800 Other Stock: -

4. Planned Disposition Period Start Date: September 21, 2026 End Date: November 20, 2026

5. Disposition Purpose Treasury stock distribution in connection with special bonus payment to executives and employees

6. Disposition Method Proportional Distribution to Shareholders (shares): - Off-Hours Block Trading (shares): - Off-Market Disposition (shares): - Other (shares): 5,913

7. Disposition Counterparty Nanosinmaterial Co., Ltd. executives and employees

8. Commissioned Investment Broker -

9. Treasury Stock Holdings Status Before Disposition Acquisition Within Distributable Earnings Range (shares) Common Stock: 219,206 Ratio (%): 1.79 Other Stock: - Ratio (%): - Other Acquisition (shares) Common Stock: - Ratio (%): - Other Stock: - Ratio (%): -

10. Holdings and Disposition Plan Shareholders' Meeting Approval Date: June 2, 2026

11. Disposition Decision Date September 18, 2026 Independent (Outside) Director* Attendance: Attended (persons): 1, Did Not Attend (persons): - Auditor (Audit Committee Member who is not an Independent (Outside) Director*) Attendance: Attended

12. Daily Sales Order Quantity Limit Common Stock: - Other Stock: -

* Listed companies: independent director; unlisted companies: outside director

13. Other Matters for Reference in Investment Decisions

【Treasury Stock Holdings Status Before Disposition Decision】 (Unit: shares)

Acquisition Method | Stock Type | Opening Balance | Change Acquisition (+) | Change Disposition (-) | Change Cancellation (-) | Closing Balance | Remarks

Acquisition Within Distributable Earnings Range Direct Acquisition On-Market Direct Acquisition Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Off-Market Direct Acquisition Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Public Tender Offer Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Subtotal (a) Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Acquisition by Trust Agreement Trustee Holdings Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Physical Holdings Common Stock: 229,506 |, | 10,300 |, | 219,206 | Other Stock: |, |, |, |, |

Subtotal (b) Common Stock: 229,506 |, | 10,300 |, | 219,206 | Other Stock: |, |, |, |, |

Other Acquisition (c) Common Stock: |, |, |, |, | Other Stock: |, |, |, |, |

Total (a+b+c) Common Stock: 229,506 |, | 10,300 |, | 219,206 | Other Stock: |, |, |, |, |

【Additional Disclosure Matters】

1. Relationship between Disposition Counterparty and Company or Largest Shareholder Unregistered Officers: Kim Se-jong (Senior Managing Director), Song Se-ho (Senior Managing Director) Employees: Kim Sung-jong and 24 others

2. Reason for Selection of Disposition Counterparty Selected through the Board of Directors to provide performance compensation and motivation to executives and employees.

3. Number of Disposition Shares by Counterparty (shares) Nanosinmaterial Co., Ltd. executives and employees (27 persons): Registered common stock, total 5,913 shares

4. Basis for Price Calculation The disposition target stock price was applied based on the closing price on the business day prior to the Board of Directors meeting.

5. Anticipated Stock Value Dilution Effect The 5,913 shares to be disposed represent 0.05% of total issued shares of 12,262,191 shares, and the stock value dilution effect is expected to be minimal.

6. Other Matters for Reference in Investment Decisions Not applicable.