0000919574-21-005233.txt : 20210816 0000919574-21-005233.hdr.sgml : 20210816 20210813192707 ACCESSION NUMBER: 0000919574-21-005233 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20210630 FILED AS OF DATE: 20210816 DATE AS OF CHANGE: 20210813 EFFECTIVENESS DATE: 20210816 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Mountaineer Partners Management, LLC CENTRAL INDEX KEY: 0001730532 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-19269 FILM NUMBER: 211173929 BUSINESS ADDRESS: STREET 1: 950 3RD AVENUE STREET 2: 28TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 646-459-7060 MAIL ADDRESS: STREET 1: 950 3RD AVENUE STREET 2: 28TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 13F-HR 1 primary_doc.xml 13F-HR LIVE false true false 0001730532 XXXXXXXX 06-30-2021 06-30-2021 false Mountaineer Partners Management, LLC

950 3rd Avenue 28TH FLOOR New York NY 10022

13F HOLDINGS REPORT 028-19269 N Mark Lee 646-459-7061 /s/ Mark Lee New York NY 08-13-2021 0 28 137335 INFORMATION TABLE 2 infotable.xml AIR TRANSPORT SERVICES GRP I COM 00922R105 4636 199564 SH SOLE 199564 0 0 AIR TRANSPORT SERVICES GRP I COM 00922R105 1706 73436 SH SOLE 0 0 73436 ALLEGHENY TECHNOLOGIES INC COM 01741R102 2372 113777 SH SOLE 0 0 113777 ALLEGHENY TECHNOLOGIES INC COM 01741R102 6736 323062 SH SOLE 323062 0 0 BWX TECHNOLOGIES INC COM 05605H100 2414 41533 SH SOLE 0 0 41533 BWX TECHNOLOGIES INC COM 05605H100 7998 137617 SH SOLE 137617 0 0 CALERES INC COM 129500104 8902 326213 SH SOLE 326213 0 0 CALERES INC COM 129500104 2217 81226 SH SOLE 0 0 81226 CLEARWAY ENERGY INC CL C 18539C204 5697 215150 SH SOLE 215150 0 0 CLEARWAY ENERGY INC CL C 18539C204 2088 78850 SH SOLE 0 0 78850 CONSTELLIUM SE CL A SHS F21107101 2379 125549 SH SOLE 0 0 125549 CONSTELLIUM SE CL A SHS F21107101 8863 467681 SH SOLE 467681 0 0 EAGLE MATLS INC COM 26969P108 2482 17466 SH SOLE 0 0 17466 EAGLE MATLS INC COM 26969P108 8816 62034 SH SOLE 62034 0 0 FIRSTENERGY CORP COM 337932107 7182 193008 SH SOLE 193008 0 0 FIRSTENERGY CORP COM 337932107 2396 64392 SH SOLE 0 0 64392 GORES HLDGS V INC COM CL A 382864106 2391 236699 SH SOLE 0 0 236699 GORES HLDGS V INC COM CL A 382864106 7974 789501 SH SOLE 789501 0 0 MIDDLEBY CORP COM 596278101 2406 13886 SH SOLE 0 0 13886 MIDDLEBY CORP COM 596278101 7470 43114 SH SOLE 43114 0 0 OLIN CORP COM PAR $1 680665205 2507 54184 SH SOLE 0 0 54184 OLIN CORP COM PAR $1 680665205 8318 179803 SH SOLE 179803 0 0 PROG HOLDINGS INC COM NPV 74319R101 4933 102500 SH SOLE 102500 0 0 PROG HOLDINGS INC COM NPV 74319R101 1819 37800 SH SOLE 0 0 37800 SPIRIT AEROSYSTEMS HLDGS INC COM CL A 848574109 2378 50390 SH SOLE 0 0 50390 SPIRIT AEROSYSTEMS HLDGS INC COM CL A 848574109 9486 201010 SH SOLE 201010 0 0 VISHAY INTERTECHNOLOGY INC COM 928298108 2518 111644 SH SOLE 0 0 111644 VISHAY INTERTECHNOLOGY INC COM 928298108 8251 365888 SH SOLE 365888 0 0