0000947871-22-000233.txt : 20220214 0000947871-22-000233.hdr.sgml : 20220214 20220214162814 ACCESSION NUMBER: 0000947871-22-000233 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20211231 FILED AS OF DATE: 20220214 DATE AS OF CHANGE: 20220214 EFFECTIVENESS DATE: 20220214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Yorktown Energy Partners VIII, L.P. CENTRAL INDEX KEY: 0001473116 IRS NUMBER: 262754039 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-17371 FILM NUMBER: 22632818 BUSINESS ADDRESS: STREET 1: 410 PARK AVENUE STREET 2: 19TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: (212) 515-2100 MAIL ADDRESS: STREET 1: 410 PARK AVENUE STREET 2: 19TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 13F-HR 1 primary_doc.xml 13F-HR LIVE false false false 0001473116 XXXXXXXX 12-31-2021 12-31-2021 false Yorktown Energy Partners VIII, L.P.

410 PARK AVENUE 19TH FLOOR NEW YORK NY 10022

13F HOLDINGS REPORT 028-17371 Y Yorktown VIII Company LP is the sole general partner of Yorktown Energy Partners VIII, L.P. Yorktown VIII Associates LLC is the sole general partner of Yorktown VIII Company LP. As a result, Yorktown VIII Associates LLC and Yorktown VIII Company LP may be deemed to have the power to vote or direct the vote or to dispose or direct the disposition of the shares owned by Yorktown Energy Partners VIII, L.P. Bryan H. Lawrence 212-515-2112 /s/ Bryan H. Lawrence New York NY 02-14-2022 2 3 205710 1 0001473117 028-17367 Yorktown VIII Associates LLC 2 0001473118 028-17372 Yorktown VIII Co LP INFORMATION TABLE 2 infotable.xml Antero Midstream Corp COM 03676B102 19012 1964012 SH DFND 1, 2 1964012 0 0 Antero Res Corp COM 03674X106 135589 7747952 SH DFND 1, 2 7747952 0 0 Southwestern Energy Co COM 845467109 51109 10967636 SH DFND 1, 2 10967636 0 0