Material Agreement, Proxy Results, Amendments to Bylaws (Form 8-K)

Item 1.01. Entry into a Material Definitive Agreement.

Management Agreement

On April 30, 2026, EQT Infrastructure Company LLC (the "Company") entered into an Amended and Restated Management Agreement (the "A&R Management Agreement") with EQIC Holdings L.P., a subsidiary of the Company, and EQT Partners Inc. (the "Manager").

The amendment and restatement effects certain changes, including, among other things, setting forth the terms of the management fee for the Company's Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares, as established pursuant to the Second A&R LLCA (as defined below).

The Manager is an indirect subsidiary of EQT AB.

Such summary description of the A&R Management Agreement does not purport to be complete and is qualified in its entirety by reference to the A&R Management Agreement, a copy of which is included as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On April 30, 2026, the Company executed its Second Amended and Restated Limited Liability Company Agreement (the "Second A&R LLCA"), which amended and restated the Company's Amended and Restated Limited Liability Company Agreement, dated as of January 30, 2026.

The amendment and restatement effects certain changes, including, among other things, the establishment of the Company's Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares.

Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares

Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares have equal rights and privileges with the Company's Class D Shares, Class A-D Shares, Class I Shares, Class A-I Shares, Class S Shares, and Class A-S Shares, except that Class S Shares, Class A-S Shares, Class M-S Shares and Class M-S-TE Shares pay a sales load and dealer manager fee; Class I Shares, Class A-I Shares, Class M-I Shares and Class M-I-TE Shares do no pay a servicing fee; and Class A-I, Class A-D, Class A-S, Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares pay a lower management fee rate.

Class M-I Shares, Class M-S Shares, Class M-I-TE Shares and Class M-S-TE Shares are not entitled to nominate, remove or participate in the appointment of directors of the Company.

Such summary description of the Second A&R LLCA does not purport to be complete and is qualified in its entirety by reference to the Second A&R LLCA, a copy of which is included as Exhibit 3.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 5.07. Submission of Matters to a Vote of Security Holders.

On April 30, 2026, by a written consent, EQT Holdings AB, an indirect subsidiary of EQT AB and the Company's sole Class Q Member, approved the Second A&R LLCA, as described under Item 5.03 of this Current Report on Form 8-K.