X0202 SCHEDULE 13G 0001876264 XXXXXXXX LIVE Common Stock, par value $0.0001 per share 09/21/2026 0002088082 Electra Therapeutics, Inc. 284825106 230 E Grand Avenue Suite S-100 South San Francisco CA 94080 Rule 13d-1(c) LSP 7 Cooperatief U.A. P7 0 3795281 0 3795281 3795281 N 6.0 OO LSP 7 Management B.V. P7 0 3795281 0 3795281 3795281 N 6.0 OO Electra Therapeutics, Inc. 230 E Grand Avenue, Suite S-100, South San Francisco, California 94080. Each of the following is hereinafter individually referred to as a "Reporting Person" and collectively as the "Reporting Persons." This statement is filed on behalf of: LSP 7 Cooperatief U.A. ("LSP 7"); and LSP 7 Management B.V. The principal business address of each of the Reporting Persons is c/o EQT Life Sciences, Johannes Vermeerplein 9, 1071 DV Amsterdam, the Netherlands. Each of the Reporting Persons is organized under the laws of the Netherlands. Y The ownership information presented herein represents beneficial ownership of Common Stock of the Issuer as of September 21, 2026, based on 62,766,955 shares of Common Stock outstanding as of September 21, 2026, as disclosed in the Issuer's prospectus supplement on Form 424B4 filed on September 18, 2026. LSP 7 is the record holder of the shares reported herein. LSP 7 Management B.V. is the sole director of LSP 7. The managing directors of LSP 7 Management B.V. are Merijn Klaassen, Rene Kuijten and Joachim Rothe. As such, LSP 7 Management B.V., Merijn Klaassen, Rene Kuijten and Joachim Rothe may be deemed to beneficially own the shares of Common Stock held of record by LSP 7. Each of these individuals disclaims beneficial ownership of such shares. 6.0% 0 3,795,281 0 3,795,281 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. Exhibit 1: Joint Filing Agreement. LSP 7 Cooperatief U.A. By: LSP 7 Management B.V., its managing director, /s/ Merijn Klaassen 09/28/2026 By: LSP 7 Management B.V., its managing director, /s/ Rene Kuijten 09/28/2026 LSP 7 Management B.V. By: /s/ Merijn Klaassen 09/28/2026 By: /s/ Rene Kuijten 09/28/2026