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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

MAT

Superinvestors

Institutional investors holding MAT

Consensus →
InvestorFundWeightSharesValueQuarter
Mason HawkinsLongleaf Partners – Southeastern Asset Management7.57%8,570,328$170.0M2025Q4
Ariel InvestmentsAriel Investments (Bobrinskoy & Rogers)2.69%12,532,133$248.6M2025Q4
Samantha McLemorePatient Capital Management2.14%2,794,343$55.4M2025Q4
David KatzMatrix Asset Advisors0.20%140,485$2.6M2004Q2

Congressional Activity

Congressional data coming soon

Insider Activity

No insider trades in the last 90 days

Insider Tradeslast 90 days

No insider trades in the last 90 days.

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.