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CHATHAM CAPITAL GROUP, INC.: MTRN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CHATHAM CAPITAL GROUP, INC. on MTRN, newest first. How the timeline and the estimate are built.

CHATHAM CAPITAL GROUP, INC. held 27,575 MTRN shares at 2026-06-30 per its 13F-HR filed 2026-07-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 27,575 shares
    Change vs previous 13F -1,931 shares

    1.05% of the 13F portfolio, value $8,200,529.

    13F-HR 0001108969-26-000004 filed by CHATHAM CAPITAL GROUP, 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 29,506 shares
    Change vs previous 13F -2,532 shares

    0.62% of the 13F portfolio, value $4,268,043.

    13F-HR 0001108969-26-000003 filed by CHATHAM CAPITAL GROUP, 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 32,038 shares
    Change vs previous 13F +290 shares

    0.57% of the 13F portfolio, value $3,982,964.

    13F-HR 0001108969-26-000001 filed by CHATHAM CAPITAL GROUP, 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 31,748 shares
    Change vs previous 13F +2,207 shares

    0.55% of the 13F portfolio, value $3,835,476.

    13F-HR 0001108969-25-000003 filed by CHATHAM CAPITAL GROUP, 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 29,541 shares
    Change vs previous 13F -205 shares

    0.36% of the 13F portfolio, value $2,344,669.

    13F-HR 0001085146-25-003913 filed by CHATHAM CAPITAL GROUP, 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 29,746 shares
    Change vs previous 13F +725 shares

    0.4% of the 13F portfolio, value $2,427,274.

    13F-HR 0001085146-25-002018 filed by CHATHAM CAPITAL GROUP, 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 29,021 shares
    Change vs previous 13F +9,286 shares

    0.47% of the 13F portfolio, value $2,869,596.

    13F-HR 0001085146-25-000877 filed by CHATHAM CAPITAL GROUP, 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 19,735 shares
    Change vs previous 13F not available

    0.36% of the 13F portfolio, value $2,207,557.

    13F-HR 0001085146-24-004932 filed by CHATHAM CAPITAL GROUP, INC.
    Filed (acceptance time not in the bulk data set), ingested

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