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:
12-31-2019
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]
02-13-2020
                           [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:
25
Form 13F Information table Value Total:
89825
          (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 INCCOM01741R1021,62878,782SHSOLE 0 0 78,782
ALLEGHENY TECHNOLOGIES INCCOM01741R1024,891236,751SHSOLE236,751 0 0
BOEING COCOM0970231052,0726,361SHSOLE 0 0 6,361
BOEING COCOM0970231054,93215,139SHSOLE15,139 0 0
BUILDERS FIRSTSOURCE INCCOM12008R1076,052238,187SHSOLE238,187 0 0
BUILDERS FIRSTSOURCE INCCOM12008R1072,14284,313SHSOLE 0 0 84,313
BWX TECHNOLOGIES INCCOM05605H1002,14334,525SHSOLE 0 0 34,525
BWX TECHNOLOGIES INCCOM05605H10011,636187,442SHSOLE187,442 0 0
CEDAR FAIR L PDEPOSITRY UNIT1501851061,32523,901SHSOLE 0 0 23,901
CEDAR FAIR L PDEPOSITRY UNIT1501851063,11056,099SHSOLE56,099 0 0
CLEARWAY ENERGY INCCL A18539C1051,32169,100SHSOLE69,100 0 0
CLEARWAY ENERGY INCCL C18539C20413,425672,909SHSOLE672,909 0 0
CLEARWAY ENERGY INCCL C18539C2042,127106,622SHSOLE 0 0 106,622
CONSTELLIUM SECL A SHSF211071012,034151,797SHSOLE 0 0 151,797
CONSTELLIUM SECL A SHSF211071016,757504,271SHSOLE504,271 0 0
LYON WILLIAM HOMESCL A NEW55207470041720,881SHSOLE 0 0 20,881
LYON WILLIAM HOMESCL A NEW55207470099149,619SHSOLE49,619 0 0
NORBORD INCCOM NEW65548P4031,73864,967SHSOLE 0 0 64,967
NORBORD INCCOM NEW65548P4034,120154,033SHSOLE154,033 0 0
STAGE STORES INCCOM NEW85254C30577295,105SHSOLE95,105 0 0
STAGE STORES INCCOM NEW85254C30532439,895SHSOLE 0 0 39,895
TYSON FOODS INCCL A9024941032,08222,866SHSOLE 0 0 22,866
TYSON FOODS INCCL A9024941034,47349,134SHSOLE49,134 0 0
VISHAY INTERTECHNOLOGY INCCOM9282981082,148100,893SHSOLE 0 0 100,893
VISHAY INTERTECHNOLOGY INCCOM9282981087,163336,465SHSOLE336,465 0 0