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SOUTHEASTERN ASSET MANAGEMENT INC/TN/: MAT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SOUTHEASTERN ASSET MANAGEMENT INC/TN/ on MAT, newest first. How the timeline and the estimate are built.

SOUTHEASTERN ASSET MANAGEMENT INC/TN/ held 12,322,555 MAT shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,322,555 shares
    Change vs previous 13F -489,602 shares

    8.92% of the 13F portfolio, value $171,037,063.

    13F-HR 0001398344-26-014641 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 12,812,157 shares
    Change vs previous 13F +4,241,829 shares

    9.16% of the 13F portfolio, value $186,160,640.

    13F-HR 0001398344-26-009296 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 8,570,328 shares
    Change vs previous 13F +409,032 shares

    7.57% of the 13F portfolio, value $170,035,308.

    13F-HR 0001398344-26-003084 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 8,161,296 shares
    Change vs previous 13F +941,031 shares

    7.01% of the 13F portfolio, value $137,354,612.

    13F-HR 0001398344-25-020985 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 7,220,265 shares
    Change vs previous 13F +381,331 shares

    7.18% of the 13F portfolio, value $142,383,627.

    13F-HR 0001398344-25-015655 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 6,838,934 shares
    Change vs previous 13F -793,410 shares

    7.08% of the 13F portfolio, value $132,880,486.

    13F-HR 0001398344-25-009698 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 7,632,344 shares
    Change vs previous 13F -357,980 shares

    6.39% of the 13F portfolio, value $135,321,460.

    13F-HR 0001398344-25-002900 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 7,990,324 shares
    Change vs previous 13F not available

    7.18% of the 13F portfolio, value $152,215,673.

    13F-HR 0001398344-24-020733 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).