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Disclosery

HEARTLAND ADVISORS INC: MRTN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of HEARTLAND ADVISORS INC on MRTN, newest first. How the timeline and the estimate are built.

HEARTLAND ADVISORS INC held 350,000 MRTN shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 350,000 shares
    Change vs previous 13F 0 shares

    0.27% of the 13F portfolio, value $6,072,500.

    13F-HR 0000892712-26-000340 filed by HEARTLAND ADVISORS INC
    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 350,000 shares
    Change vs previous 13F +50,000 shares

    0.23% of the 13F portfolio, value $4,595,500.

    13F-HR 0000892712-26-000226 filed by HEARTLAND ADVISORS INC
    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 300,000 shares
    Change vs previous 13F -100,000 shares

    0.18% of the 13F portfolio, value $3,414,000.

    13F-HR 0000892712-26-000080 filed by HEARTLAND ADVISORS INC
    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 400,000 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $4,264,000.

    13F-HR 0000892712-25-000143 filed by HEARTLAND ADVISORS INC
    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 400,000 shares
    Change vs previous 13F +100,000 shares

    0.29% of the 13F portfolio, value $5,196,000.

    13F-HR 0000892712-25-000090 filed by HEARTLAND ADVISORS INC
    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 300,000 shares
    Change vs previous 13F +150,000 shares

    0.24% of the 13F portfolio, value $4,116,000.

    13F-HR 0000892712-25-000061 filed by HEARTLAND ADVISORS INC
    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 150,000 shares
    Change vs previous 13F 0 shares

    0.13% of the 13F portfolio, value $2,341,500.

    13F-HR 0000892712-25-000032 filed by HEARTLAND ADVISORS INC
    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 150,000 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $2,655,000.

    13F-HR 0000892712-24-000127 filed by HEARTLAND ADVISORS INC
    Filed (acceptance time not in the bulk data set), ingested

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