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MATTERN CAPITAL MANAGEMENT, LLC: BLK position timeline

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

MATTERN CAPITAL MANAGEMENT, LLC held 10,621 BLK 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 10,621 shares
    Change vs previous 13F +234 shares

    1.19% of the 13F portfolio, value $10,212,729.

    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 10,387 shares
    Change vs previous 13F -21 shares

    1.2% of the 13F portfolio, value $9,989,282.

    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 10,408 shares
    Change vs previous 13F +305 shares

    1.32% of the 13F portfolio, value $11,140,099.

    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 10,103 shares
    Change vs previous 13F +23 shares

    1.38% of the 13F portfolio, value $11,778,785.

    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 10,080 shares
    Change vs previous 13F +62 shares

    1.27% of the 13F portfolio, value $10,576,440.

    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 10,018 shares
    Change vs previous 13F -554 shares

    1.21% of the 13F portfolio, value $9,481,837.

    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 10,572 shares
    Change vs previous 13F not available

    1.41% of the 13F portfolio, value $10,837,463.

    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).