0001104659-26-051897.txt : 20260429 0001104659-26-051897.hdr.sgml : 20260429 20260429200015 ACCESSION NUMBER: 0001104659-26-051897 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260427 FILED AS OF DATE: 20260429 DATE AS OF CHANGE: 20260429 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Ares Partners Holdco LLC CENTRAL INDEX KEY: 0001620263 ORGANIZATION NAME: STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-43246 FILM NUMBER: 26919251 BUSINESS ADDRESS: STREET 1: 1800 AVENUE OF THE STARS STREET 2: SUITE 1400 CITY: LOS ANGELES STATE: CA ZIP: 90067 BUSINESS PHONE: 310-201-4100 MAIL ADDRESS: STREET 1: 1800 AVENUE OF THE STARS STREET 2: SUITE 1400 CITY: LOS ANGELES STATE: CA ZIP: 90067 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: ACIP Investments Pooling LLC - Series 31 CENTRAL INDEX KEY: 0002127790 ORGANIZATION NAME: STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-43246 FILM NUMBER: 26919249 BUSINESS ADDRESS: STREET 1: 1800 AVENUE OF THE STARS, SUITE 1400 CITY: LOS ANGELES STATE: CA ZIP: 90067 BUSINESS PHONE: 310-201-4100 MAIL ADDRESS: STREET 1: 1800 AVENUE OF THE STARS, SUITE 1400 CITY: LOS ANGELES STATE: CA ZIP: 90067 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Ares X-Energy Holdings LP CENTRAL INDEX KEY: 0002127049 ORGANIZATION NAME: STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-43246 FILM NUMBER: 26919250 BUSINESS ADDRESS: STREET 1: 245 PARK AVENUE, 44TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10167 BUSINESS PHONE: 212-710-2100 MAIL ADDRESS: STREET 1: 245 PARK AVENUE, 44TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10167 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: X-Energy, Inc. CENTRAL INDEX KEY: 0002088896 STANDARD INDUSTRIAL CLASSIFICATION: FABRICATED PLATE WORK (BOILER SHOPS) [3443] ORGANIZATION NAME: 04 Manufacturing EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 251 LITTLE FALLS DRIVE CITY: WILMINGTON STATE: DE ZIP: 19808 BUSINESS PHONE: 240-552-7980 MAIL ADDRESS: STREET 1: 251 LITTLE FALLS DRIVE CITY: WILMINGTON STATE: DE ZIP: 19808 4 1 tm2612788d1_4.xml FORM 4 X0609 4 2026-04-27 1 0002088896 X-Energy, Inc. XE 0001620263 Ares Partners Holdco LLC false C/O ARES MANAGEMENT LLC, 1800 AVENUE OF THE STARS, SUITE 1400 LOS ANGELES CA 90067 0 0 0 1 Former 10% Owner 0002127049 Ares X-Energy Holdings LP false C/O ARES MANAGEMENT LLC, 245 PARK AVENUE, 44TH FLOOR NEW YORK NY 10167 0 0 0 1 Former 10% Owner 0002127790 ACIP Investments Pooling LLC - Series 31 false C/O ARES MANAGEMENT LLC, 1800 AVENUE OF THE STARS, SUITE 1400 LOS ANGELES CA 90067 0 0 0 1 Former 10% Owner 0 Upon the closing of the initial public offering of X-Energy, Inc. (the "Issuer") on April 27, 2026, the reporting persons' ownership of the Issuer's Class A common stock was diluted below 10% and the reporting persons are therefore no longer subject to Section 16 of the Securities Exchange Act of 1934, as amended. This exit report is made on a voluntary basis as the reporting persons have not acquired or disposed of any additional securities of the Issuer. Ares Partners Holdco LLC By: /s/ Anton Feingold; Authorized Signatory 2026-04-29 Ares X-Energy Holdings LP By: /s/ Anton Feingold; Authorized Signatory 2026-04-29 ACIP Investments Pooling LLC - Series 31 By: /s/ Noah Ehrenpreis; Authorized Signatory 2026-04-29