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MATTERN CAPITAL MANAGEMENT, LLC: GD position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MATTERN CAPITAL MANAGEMENT, LLC on GD, newest first. How the timeline and the estimate are built.

MATTERN CAPITAL MANAGEMENT, LLC held 33,512 GD shares at 2026-06-30 per its 13F-HR filed 2026-07-24.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 33,512 shares
    Change vs previous 13F +542 shares

    1.39% of the 13F portfolio, value $11,871,460.

    13F-HR 0001725547-26-000252 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 32,970 shares
    Change vs previous 13F -303 shares

    1.36% of the 13F portfolio, value $11,316,128.

    13F-HR 0001725547-26-000166 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 33,273 shares
    Change vs previous 13F -1,676 shares

    1.32% of the 13F portfolio, value $11,201,849.

    13F-HR 0001725547-26-000059 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 34,949 shares
    Change vs previous 13F -648 shares

    1.4% of the 13F portfolio, value $11,917,772.

    13F-HR 0001725547-25-004185 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 35,597 shares
    Change vs previous 13F +190 shares

    1.25% of the 13F portfolio, value $10,382,361.

    13F-HR 0001725547-25-003493 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 35,407 shares
    Change vs previous 13F +431 shares

    1.23% of the 13F portfolio, value $9,651,371.

    13F-HR 0001725547-25-001447 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 34,976 shares
    Change vs previous 13F -397 shares

    1.2% of the 13F portfolio, value $9,215,952.

    13F-HR 0001725547-25-000291 filed by MATTERN CAPITAL MANAGEMENT, LLC
    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 35,373 shares
    Change vs previous 13F not available

    1.35% of the 13F portfolio, value $10,689,865.

    13F-HR 0001725547-24-005983 filed by MATTERN CAPITAL MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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