X0202 SCHEDULE 13G/A 0001431926 XXXXXXXX LIVE 14 Common Stock, par value $0.01 per share 06/30/2026 0001065078 Network-1 Technologies, Inc. 64121N109 65 Locust Avenue, Third Floor New Canaan CT 06840 Rule 13d-1(c) Steven D. Heinemann X1 1209476 0 1209476 0 1209476 5.29 IN Note to 5, 7 and 9: Includes 755,976 shares of common stock owned by Goose Hill Capital LLC, of which Mr. Heinemann is the sole member. Network-1 Technologies, Inc. 65 Locust Avenue, Third Floor New Canaan, Connecticut 06840 This statement is filed by Steven D. Heinemann. The address of the principal business office of Steven D. Heinemann is 12378 Indian Road, North Palm Beach, Florida 33408. Steven D. Heinemann is a United States citizen. Y The percentages used herein are calculated based upon 22,863,181 shares of Common Stock outstanding (as set forth in the Issuer's Form 10-Q for the quarterly period ended June 30, 2026 filed on August 6, 2026). Amount beneficially owned: 1,209,476 (1) (1) Includes 755,976 shares of common stock owned by Goose Hill Capital LLC, of which Mr. Heinemann is the sole member. 5.29% 1,209,476 (1) (1) Includes 755,976 shares of common stock owned by Goose Hill Capital LLC, of which Mr. Heinemann is the sole member. -0- 1,209,476 (1) (1) Includes 755,976 shares of common stock owned by Goose Hill Capital LLC, of which Mr. Heinemann is the sole member. -0- 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 acquired and are held in the ordinary course of business and 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. 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. Steven D. Heinemann /s/ Steven D. Heinemann 08/12/2026