{"url":"https://nivawealth.com/firms/mountaineer-partners-management-163089","iapdUrl":"https://adviserinfo.sec.gov/firm/summary/163089","regulatoryAum":305735762,"crd":"163089","history":[{"filedOn":"2021-05-10","regulatoryAum":226065592,"clients":4,"employees":5,"offices":1},{"filedOn":"2022-03-31","regulatoryAum":315649815,"clients":4,"employees":5,"offices":1},{"filedOn":"2023-03-28","regulatoryAum":302979422,"clients":4,"employees":5,"offices":1},{"filedOn":"2024-03-28","regulatoryAum":252656089,"clients":4,"employees":3,"offices":1},{"filedOn":"2025-03-28","regulatoryAum":187368276,"clients":4,"employees":4,"offices":1},{"filedOn":"2026-03-31","regulatoryAum":305735762,"clients":4,"employees":4,"offices":1}],"secFileNumber":"801-78304","legalName":"Mountaineer Partners Management, LLC","displayName":"Mountaineer Partners Management","slug":"mountaineer-partners-management-163089","website":null,"classification":{"segment":"institutions","segmentLabel":"Institutional","type":"institutional_private_markets_manager","typeLabel":"Private markets","feeDisclosure":"payment_only"},"founded":null,"organization":"Delaware limited liability company","fiscalYearEnd":"December","headquarters":{"street":"950 Third Avenue, 28th Floor","city":"New York","state":"NY","stateName":"New York","country":"United States","postalCode":"10022"},"tradeNames":[],"registration":{"secApproved":"5 July 2013","noticeFilings":null,"latestNoticeFiling":null},"wealthAumPerClient":null,"staff":{"employees":4,"advisory":3,"brokerDealerReps":0,"insuranceAgents":0,"promoters":0},"aum":{"regulatory":305735762,"discretionary":305735762,"discretionaryAccounts":5,"nonDiscretionary":0,"nonDiscretionaryAccounts":0,"wrapProgram":null,"nonUsClientsPct":40,"nonAumClients":0},"clientTypes":[{"label":"Investment companies","clients":1,"regulatoryAum":57996838},{"label":"Pooled investment vehicles","clients":3,"regulatoryAum":97209485},{"label":"Charitable organizations","clients":null,"fewerThan5":true,"regulatoryAum":150529439}],"feePrograms":[],"brochureCoverage":{"scope":"known_documents","status":"not_processed","checkedAt":null,"documents":[]},"custodians":[{"name":"Merrill Lynch Professional Clearing Corp.","shortName":"Merrill Lynch Professional Clearing","location":"New York, NY","smaAssets":150529439}],"custodyNote":"Mountaineer Partners Management has custody of $97.2M in client assets for 3 clients.","otherCustodians":[],"leadership":[{"name":"Gregory Williams","title":"Chief Compliance Officer","crd":"5171383"},{"name":"Mark Lee","title":"Managing Member","crd":"2523863"}],"ownership":[{"label":"Mark Lee","detail":"Managing member in the 75% or more ownership band and a control person, since May 2011."}],"branchOffices":null,"filedOffices":{"otherThanPrincipal":0,"privateResidences":0},"listedOfficeAddresses":1,"foreignOffices":[],"officesByState":[{"state":"New York","offices":1,"addresses":[{"street":"950 Third Avenue, 28th Floor","city":"New York","headquarters":true}]}],"advFacts":{"source":{"file":"ia100226.zip","asOf":"2 October 2026"},"telephone":"646-459-7064","stateRegisteredReps":0,"otherAdviserReps":0,"compensation":["A percentage of assets under management","Performance-based fees"],"activities":["Portfolio management for investment companies","Portfolio management for pooled investment vehicles (other than investment companies)","Portfolio management for businesses (other than small businesses) or institutional clients"],"financialPlanningClients":null,"assetMix":[{"label":"Exchange-traded equity securities","percent":78},{"label":"Cash and cash equivalents","percent":23}],"privateFunds":3},"sources":{"adv1FilingDate":"31 March 2026","adv1Url":"https://reports.adviserinfo.sec.gov/reports/ADV/163089/PDF/163089.pdf","brochureDate":null,"brochureUrl":null,"iapdCompiledDate":null,"retrievedDate":"15 October 2026","retrievedOn":"2026-10-15","updatedOn":"2026-10-21","holdingsUpdatedOn":"2026-10-21","adv1Pages":{},"brochurePages":{}},"otherBusiness":[],"faq":[{"question":"How many clients does Mountaineer Partners Management have?","answer":"Mountaineer Partners Management has 4 clients and manages $306 million for them, as of March 2026. They include 3 pooled investment vehicles and 1 investment company.","source":"Form ADV Part 1A, Items 5.D and 5.F, filed 31 March 2026","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"What services does Mountaineer Partners Management offer?","answer":"Mountaineer Partners Management provides portfolio management for investment companies, portfolio management for pooled vehicles and portfolio management for institutions.","source":"Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"Which custodians does Mountaineer Partners Management use?","answer":"Mountaineer Partners Management’s separately managed account assets are held at Merrill Lynch Professional Clearing Corp. (New York, NY), with $151M. Only custodians holding at least a tenth of those assets are named.","source":"Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 31 March 2026","sourceRef":{"doc":"adv1","section":"custodians"}},{"question":"How many financial advisors does Mountaineer Partners Management have?","answer":"Mountaineer Partners Management has 0 investment adviser representatives registered with state securities authorities, out of 4 employees, and 3 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.","source":"Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"What does Mountaineer Partners Management invest in?","answer":"At the end of its last fiscal year, Mountaineer Partners Management’s separately managed accounts held 78% exchange-traded equities and 23% cash and equivalents. It advises 3 private funds.","source":"Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"Who owns Mountaineer Partners Management?","answer":"Mountaineer Partners Management’s direct owner is Mark Lee (75% or more).","source":"Form ADV Part 1A, Schedules A and B, filed 31 March 2026","sourceRef":{"doc":"adv1","section":"scheduleA"}},{"question":"How does Mountaineer Partners Management get paid?","answer":"Mountaineer Partners Management is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions among how it is paid.","source":"Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"How do I contact Mountaineer Partners Management?","answer":"Mountaineer Partners Management’s main office is at 950 Third Avenue, 28th Floor, New York, NY 10022. Its phone number is 646-459-7064.","source":"Form ADV Part 1A, Item 1.F, filed 31 March 2026","sourceRef":{"doc":"adv1","section":"offices"}}],"holdings":{"url":"https://nivawealth.com/firms/mountaineer-partners-management-163089/holdings","form":"13F-HR","periodOfReport":"2026-06-30","filedOn":"2026-08-13","filingIndexUrl":"https://www.sec.gov/Archives/edgar/data/1730532/000091957426005107/0000919574-26-005107-index.html","totalValue":137477683,"positionCount":11,"top10Share":0.970435055993779,"top10":[{"issuer":"CENTURY ALUM CO","titleOfClass":"COM","cusip":"156431108","value":23157247,"shares":503309,"shareType":"SH","priorValue":34274784,"priorShares":583997},{"issuer":"SENSIENT TECHNOLOGIES CORP","titleOfClass":"COM","cusip":"81725T100","value":16240622,"shares":131727,"shareType":"SH","priorValue":13535121,"priorShares":156584},{"issuer":"CONSTELLIUM SE","titleOfClass":"CL A SHS","cusip":"F21107101","value":15365483,"shares":482130,"shareType":"SH","priorValue":16185685,"priorShares":658490},{"issuer":"STANDARDAERO INC","titleOfClass":"COM","cusip":"85423L103","value":13896036,"shares":464595,"shareType":"SH","priorValue":10524046,"priorShares":407435},{"issuer":"CARPENTER TECHNOLOGY CORP","titleOfClass":"COM","cusip":"144285103","value":12888255,"shares":20894,"shareType":"SH","priorValue":14161415,"priorShares":35929},{"issuer":"ATI INC","titleOfClass":"COM","cusip":"01741R102","value":11908585,"shares":60419,"shareType":"SH","priorValue":13350901,"priorShares":91784},{"issuer":"MIDDLEBY CORP","titleOfClass":"COM","cusip":"596278101","value":11616868,"shares":67536,"shareType":"SH"},{"issuer":"ALCOA CORP","titleOfClass":"COM","cusip":"013872106","value":10853723,"shares":208165,"shareType":"SH","priorValue":15500459,"priorShares":233687},{"issuer":"HARMONY GOLD MNG LTD","titleOfClass":"SPONSORED ADR","cusip":"413216300","value":9322955,"shares":612949,"shareType":"SH","priorValue":10247717,"priorShares":666735},{"issuer":"ARDAGH METAL PACKAGING S A","titleOfClass":"SHS","cusip":"L02235106","value":8163389,"shares":1722234,"shareType":"SH","priorValue":7606233,"priorShares":1878082}],"positionsListed":11,"positions":[{"issuer":"CENTURY ALUM CO","titleOfClass":"COM","cusip":"156431108","value":23157247,"shares":503309,"shareType":"SH","priorValue":34274784,"priorShares":583997},{"issuer":"SENSIENT TECHNOLOGIES CORP","titleOfClass":"COM","cusip":"81725T100","value":16240622,"shares":131727,"shareType":"SH","priorValue":13535121,"priorShares":156584},{"issuer":"CONSTELLIUM SE","titleOfClass":"CL A SHS","cusip":"F21107101","value":15365483,"shares":482130,"shareType":"SH","priorValue":16185685,"priorShares":658490},{"issuer":"STANDARDAERO INC","titleOfClass":"COM","cusip":"85423L103","value":13896036,"shares":464595,"shareType":"SH","priorValue":10524046,"priorShares":407435},{"issuer":"CARPENTER TECHNOLOGY CORP","titleOfClass":"COM","cusip":"144285103","value":12888255,"shares":20894,"shareType":"SH","priorValue":14161415,"priorShares":35929},{"issuer":"ATI INC","titleOfClass":"COM","cusip":"01741R102","value":11908585,"shares":60419,"shareType":"SH","priorValue":13350901,"priorShares":91784},{"issuer":"MIDDLEBY CORP","titleOfClass":"COM","cusip":"596278101","value":11616868,"shares":67536,"shareType":"SH"},{"issuer":"ALCOA CORP","titleOfClass":"COM","cusip":"013872106","value":10853723,"shares":208165,"shareType":"SH","priorValue":15500459,"priorShares":233687},{"issuer":"HARMONY GOLD MNG LTD","titleOfClass":"SPONSORED ADR","cusip":"413216300","value":9322955,"shares":612949,"shareType":"SH","priorValue":10247717,"priorShares":666735},{"issuer":"ARDAGH METAL PACKAGING S A","titleOfClass":"SHS","cusip":"L02235106","value":8163389,"shares":1722234,"shareType":"SH","priorValue":7606233,"priorShares":1878082},{"issuer":"CAMECO CORP","titleOfClass":"COM","cusip":"13321L108","value":4064520,"shares":39903,"shareType":"SH","priorValue":4607670,"priorShares":42424}]},"notice":"Compiled from public SEC Form ADV filings on the dates in `sources`. Facts as filed; not a rating, ranking, or recommendation. Niva is not affiliated with this firm. Disciplinary history is deliberately not included here or on the page; the SEC publishes the complete record at the `iapdUrl` above."}