The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

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: 06-30-2022
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 , NY10022
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 New York , NY 08-12-2022
[Signature] [City, State] [Date]
Report Type (Check only one.):
X 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: 20
Form 13F Information Table Value Total: 99,359
(thousands)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Form 13F File Number Name

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.]
No. Form 13F File Number Name


SEC FORM 13F-HR

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

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 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
AIR TRANSPORT SERVICES GRP I COM 00922R105 2,277 79,250 SH SOLE 0 0 79,250
AIR TRANSPORT SERVICES GRP I COM 00922R105 6,122 213,083 SH SOLE 213,083 0 0
ALLEGHENY TECHNOLOGIES INC COM 01741R102 1,168 51,443 SH SOLE 0 0 51,443
ALLEGHENY TECHNOLOGIES INC COM 01741R102 3,612 159,064 SH SOLE 159,064 0 0
HALLIBURTON CO COM 406216101 7,118 226,991 SH SOLE 226,991 0 0
HALLIBURTON CO COM 406216101 2,373 75,672 SH SOLE 0 0 75,672
KIRBY CORP COM 497266106 2,152 35,373 SH SOLE 0 0 35,373
KIRBY CORP COM 497266106 8,720 143,330 SH SOLE 143,330 0 0
KLX ENERGY SERVICS HOLDNGS I COM NEW 48253L205 101 23,377 SH SOLE 0 0 23,377
KLX ENERGY SERVICS HOLDNGS I COM NEW 48253L205 310 71,623 SH SOLE 71,623 0 0
NEXGEN ENERGY LTD COM 65340P106 1,432 398,864 SH SOLE 398,864 0 0
NEXGEN ENERGY LTD COM 65340P106 472 131,430 SH SOLE 0 0 131,430
OLIN CORP COM PAR $1 680665205 651 14,065 SH SOLE 0 0 14,065
OLIN CORP COM PAR $1 680665205 1,987 42,934 SH SOLE 42,934 0 0
PROPETRO HLDG CORP COM 74347M108 1,173 117,307 SH SOLE 0 0 117,307
PROPETRO HLDG CORP COM 74347M108 3,583 358,283 SH SOLE 358,283 0 0
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 2,433 91,182 SH SOLE 0 0 91,182
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 14,835 556,024 SH SOLE 556,024 0 0
VISHAY INTERTECHNOLOGY INC COM 928298108 2,511 140,934 SH SOLE 0 0 140,934
VISHAY INTERTECHNOLOGY INC COM 928298108 36,329 2,038,638 SH SOLE 2,038,638 0 0