SCHEDULE 13G/A 0001479348 XXXXXXXX LIVE 5 Common Stock, no par value 12/31/2024 0000830616 SCI Engineered Materials, Inc. 78402S108 2839 Charter Street Columbus OH 43228 Rule 13d-1(c) Charles Kohnen X1 310000 48000 310000 48000 358000 7.8 IN Percentage ownership in Row 11 is based on 4,568,127 shares of Common Stock outstanding as of February 13, 2025, as reported by the Issuer in its Annual Report on Form 10-K for the year ended December 31, 2024, filed with the Securities and Exchange Commission on February 14, 2025. SCI Engineered Materials, Inc. 2839 Charter Street, Columbus, OHIO 43228 Charles Kohnen 5424 Spice Bush Court Dayton, Ohio 45429 USA Y 358,000 7.8% Percentage ownership is based on 4,568,127 shares of Common Stock outstanding as of February 13, 2025, as reported by the Issuer in its Annual Report on Form 10-K for the year ended December 31, 2024, filed with the Securities and Exchange Commission on February 14, 2025. 310,000 48,000 The Reporting Person shares voting power with his wife, Angela Kohnen, over 48,000 shares. 310,000 48,000 The Reporting Person shares dispositive power with his wife, Angela Kohnen, over 48,000 shares. Y Y Y Y Y N 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. Charles Kohnen /s/ Charles Kohnen 02/17/2025