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:
09-30-2024
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:
950 3rd Avenue
28TH FLOOR
New York, NY 10022
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]
11-13-2024
                           [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:
30
Form 13F Information table Value Total:
6568384
          (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
ALCOA CORPCOM01387210656,4782,178,921SHSOLE 0 0 2,178,921
ALCOA CORPCOM013872106223,3538,616,959SHSOLE8,616,959 0 0
ATI INCCOM01741R10232,6642,185,548SHSOLE 0 0 2,185,548
ATI INCCOM01741R102107,9867,225,343SHSOLE7,225,343 0 0
BUILDERS FIRSTSOURCE INCCOM12008R10710,6472,064,027SHSOLE 0 0 2,064,027
BUILDERS FIRSTSOURCE INCCOM12008R10745,2288,767,900SHSOLE8,767,900 0 0
CENTURY ALUM COCOM1564311081,271,47920,636,104SHSOLE20,636,104 0 0
CENTURY ALUM COCOM156431108136,3522,212,993SHSOLE 0 0 2,212,993
CONSTELLIUM SECL A SHSF21107101126,0732,049,947SHSOLE 0 0 2,049,947
CONSTELLIUM SECL A SHSF21107101423,0616,878,972SHSOLE6,878,972 0 0
D R HORTON INCCOM23331A10910,7742,055,356SHSOLE 0 0 2,055,356
D R HORTON INCCOM23331A10940,1477,658,843SHSOLE7,658,843 0 0
ENTEGRIS INCCOM29362U10418,4952,081,242SHSOLE 0 0 2,081,242
ENTEGRIS INCCOM29362U10479,6538,963,352SHSOLE8,963,352 0 0
FREEPORT-MCMORAN INCCL B35671D857196,3089,799,695SHSOLE9,799,695 0 0
FREEPORT-MCMORAN INCCL B35671D85742,7372,133,431SHSOLE 0 0 2,133,431
GE VERNOVA INCCOM36828A1018,5302,174,979SHSOLE 0 0 2,174,979
GE VERNOVA INCCOM36828A10130,0357,658,324SHSOLE7,658,324 0 0
HUDBAY MINERALS INCCOM443628102235,0062,159,705SHSOLE 0 0 2,159,705
HUDBAY MINERALS INCCOM443628102888,3468,163,900SHSOLE8,163,900 0 0
MATERION CORPCOM57669010119,7202,205,879SHSOLE 0 0 2,205,879
MATERION CORPCOM57669010162,0566,941,584SHSOLE6,941,584 0 0
NEXGEN ENERGY LTDCOM65340P106435,0362,840,785SHSOLE2,840,785 0 0
NEXGEN ENERGY LTDCOM65340P106129,471845,446SHSOLE 0 0 845,446
SAN JUAN BASIN RTY TRUNIT BEN INT798241105168,427623,180SHSOLE 0 0 623,180
SAN JUAN BASIN RTY TRUNIT BEN INT798241105550,6272,037,320SHSOLE2,037,320 0 0
SCORPIO TANKERS INCSHSY7542C13027,8791,987,773SHSOLE 0 0 1,987,773
SCORPIO TANKERS INCSHSY7542C13089,5386,384,059SHSOLE6,384,059 0 0
VISHAY INTERTECHNOLOGY INCCOM928298108103,3531,954,405SHSOLE 0 0 1,954,405
VISHAY INTERTECHNOLOGY INCCOM928298108998,92518,889,672SHSOLE18,889,672 0 0