ALLG Allego NV

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2023

Commission File Number: 001-41329

Allego N.V.

(Translation of registrant’s name into English)

Westervoortsedijk 73 KB

6827 AV Arnhem, the Netherlands

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

The information contained in this Report on Form 6-K included in Exhibit 99.1 is hereby incorporated by reference into Allego N.V.’s (i) Registration Statement on Form S-8 (File No. 333-272151) and (ii) post-effective Amendment No. 2 to Form F-1 in the Registration Statement on Form F-3 (File No. 333-264056).

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

The following exhibit is furnished herewith:

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Exhibit 99.1

VOTING RESULTS

ANNUAL GENERAL MEETING OF SHAREHOLDERS

ALLEGO N.V.

June 30, 2023

At the meeting, for all agenda items, 257,941,329 shares in the company’s capital are represented, representing approximately 96.54% of the company’s issued share capital.

For confirmation