UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
Report for the Calendar Year or Quarter Ended:
03-31-2020
Check here if Amendment: ☐ Amendment Number:
This Amendment (Check only one.):☐ is a restatement.
☐ adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:
Mountaineer Partners Management, LLC
Address:
150 EAST 58TH ST
14TH FLOOR
New York, NY 10155
Form 13F File Number:
028-19269

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.


Person Signing this Report on Behalf of Reporting Manager:
Name:
Mark Lee
Title:
Managing Member
Phone:
646-459-7061


Signature, Place, and Date of Signing:

/s/ Mark Lee
                         [Signature]
New York, NEW YORK
                 [City, State]
05-14-2020
                           [Date]
                          

Report Type (Check only one.):

☒ 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) 

☐ 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) 

☐ 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)


Form 13F Summary Page

Report Summary:

Number of Other Included Managers:
0
Form 13F Information table Entry Total:
31
Form 13F Information table Value Total:
70288
          (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]

  
NONE


UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
ALLEGHENY TECHNOLOGIES INCCOM01741R10283598,282SHSOLE 0 0 98,282
ALLEGHENY TECHNOLOGIES INCCOM01741R1022,041240,151SHSOLE240,151 0 0
BOEING COCOM0970231051,65911,122SHSOLE 0 0 11,122
BOEING COCOM0970231054,72931,708SHSOLE31,708 0 0
BUILDERS FIRSTSOURCE INCCOM12008R10796378,712SHSOLE 0 0 78,712
BUILDERS FIRSTSOURCE INCCOM12008R1072,367193,555SHSOLE193,555 0 0
BWX TECHNOLOGIES INCCOM05605H1004,70196,508SHSOLE96,508 0 0
BWX TECHNOLOGIES INCCOM05605H1001,97240,492SHSOLE 0 0 40,492
CLEARWAY ENERGY INCCL C18539C20412,507665,253SHSOLE665,253 0 0
CLEARWAY ENERGY INCCL C18539C2041,87499,671SHSOLE 0 0 99,671
CLEARWAY ENERGY INCCL A18539C1051,04260,700SHSOLE60,700 0 0
CONSTELLIUM SECL A SHSF211071011,375263,991SHSOLE 0 0 263,991
CONSTELLIUM SECL A SHSF211071013,285630,461SHSOLE630,461 0 0
D R HORTON INCCOM23331A1091614,729SHSOLE 0 0 4,729
D R HORTON INCCOM23331A10938311,271SHSOLE11,271 0 0
INGEVITY CORPCOM45688C10799228,177SHSOLE28,177 0 0
INGEVITY CORPCOM45688C10741611,823SHSOLE 0 0 11,823
MGM GROWTH PPTYS LLCCL A COM55303A1051,91080,692SHSOLE 0 0 80,692
MGM GROWTH PPTYS LLCCL A COM55303A1055,013211,808SHSOLE211,808 0 0
NORBORD INCCOM NEW65548P40378666,200SHSOLE 0 0 66,200
NORBORD INCCOM NEW65548P4032,487210,000SHSOLE210,000 0 0
PG&E CORPCOM69331C1081,801200,366SHSOLE 0 0 200,366
PG&E CORPCOM69331C1085,297589,234SHSOLE589,234 0 0
SPIRIT AIRLS INCCOM8485771021,408109,253SHSOLE109,253 0 0
SPIRIT AIRLS INCCOM84857710259045,747SHSOLE 0 0 45,747
UNITED AIRLS HLDGS INCCOM91004710937311,823SHSOLE 0 0 11,823
UNITED AIRLS HLDGS INCCOM91004710988928,177SHSOLE28,177 0 0
UNITED TECHNOLOGIES CORPCOM9130171091,79018,971SHSOLE 0 0 18,971
UNITED TECHNOLOGIES CORPCOM9130171094,26645,229SHSOLE45,229 0 0
VISHAY INTERTECHNOLOGY INCCOM92829810868947,798SHSOLE 0 0 47,798
VISHAY INTERTECHNOLOGY INCCOM9282981081,687117,060SHSOLE117,060 0 0