X0202 SCHEDULE 13G/A 0001104659-24-114658 0001352851 XXXXXXXX LIVE 1 Common Stock, par value $0.0001 06/30/2026 0002021042 Presidio MidCo Inc. G3106N109 1090 Center Drive Park City UT 84098 Rule 13d-1(b) MAGNETAR FINANCIAL LLC DE 0.00 0.00 0.00 0.00 0.00 N 0 IA OO MAGNETAR CAPITAL PARTNERS LP DE 0.00 0.00 0.00 0.00 0.00 N 0 HC PN SUPERNOVA MANAGEMENT LLC DE 0.00 0.00 0.00 0.00 0.00 N 0 HC OO DAVID J. SNYDERMAN X1 0.00 0.00 0.00 0.00 0.00 N 0 HC IN Presidio MidCo Inc. 1090 Center Drive, Park City, UT 84098 This statement is filed on behalf of each of the following person (collectively, the "Reporting Persons"): i) Magnetar Financial LLC ("Magnetar Financial"); ii) Magnetar Capital Partners LP ("Magnetar Capital Partners"); iii) Supernova Management LLC ("Supernova Management"); and iv) David J. Snyderman ("Mr. Snyderman"). Magnetar Financial serves as the investment adviser to the Magnetar Funds, and as such, Magnetar Financial exercises voting and investment power over the Shares held for the Magnetar Funds' accounts. Magnetar Capital Partners serves as the sole member and parent holding company of Magnetar Financial. Supernova Management is the general partner of Magnetar Capital Partners. The administrative manager of Supernova Management is Mr. Snyderman. The address of the principal business office of each of Magnetar Financial, Magnetar Capital Partners, Supernova Management, and Mr. Snyderman is 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201. Place of Organization. i) Magnetar Financial is a Delaware limited liability company; ii) Magnetar Capital Partners is a Delaware limited partnership; iii) Supernova Management is a Delaware limited liability company; and iv) Mr. Snyderman is a citizen of the United States of America. N IA HC As of June 30, 2026, each of Magnetar Financial, Magnetar Capital Partners, Supernova Management and Mr. Snyderman held 0 Shares. The Shares held by the Magnetar Funds represent approximately 0% of the total number of Shares outstanding (calculated pursuant to Rule 13d-3(d)(1)(i)) of the outstanding shares of the Issuer). As of June 30, 2026, each of the Reporting Persons were deemed to be the beneficial owner constituting approximately 0% of the total number of shares outstanding. 0 0 0 0 N 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, other than activities solely in connection with a nomination under § 240.14a-11. 99.1 Joint Filing Agreement, dated as of September 4, 2026, among the Reporting Persons. 99.2 Power of Attorney, dated as of December 22, 2022 filed by the Reporting Persons on September 4, 2026. MAGNETAR FINANCIAL LLC /s/ Hayley Stein 09/04/2026 MAGNETAR CAPITAL PARTNERS LP /s/ Hayley Stein 09/04/2026 SUPERNOVA MANAGEMENT LLC /s/ Hayley Stein 09/04/2026 DAVID J. SNYDERMAN /s/ Hayley Stein 09/04/2026 MAGNETAR FINANCIAL LLC BY: Magnetar Capital Partners LP, its Sole Member BY: Supernova Management LLC, its General Partner MAGNETAR CAPITAL PARTNERS LP By: Supernova Management LLC, its General Partner