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MATTERN CAPITAL MANAGEMENT, LLC: AMGN position timeline

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

MATTERN CAPITAL MANAGEMENT, LLC held 28,008 AMGN 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 28,008 shares
    Change vs previous 13F +4,118 shares

    1.18% of the 13F portfolio, value $10,142,257.

    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 23,890 shares
    Change vs previous 13F -10,686 shares

    1.01% of the 13F portfolio, value $8,405,697.

    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 34,576 shares
    Change vs previous 13F -3,728 shares

    1.34% of the 13F portfolio, value $11,317,071.

    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 38,304 shares
    Change vs previous 13F +4,411 shares

    1.27% of the 13F portfolio, value $10,809,389.

    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 33,893 shares
    Change vs previous 13F +852 shares

    1.14% of the 13F portfolio, value $9,463,265.

    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 33,041 shares
    Change vs previous 13F +364 shares

    1.31% of the 13F portfolio, value $10,293,924.

    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 32,677 shares
    Change vs previous 13F -908 shares

    1.11% of the 13F portfolio, value $8,516,933.

    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 33,585 shares
    Change vs previous 13F not available

    1.36% of the 13F portfolio, value $10,821,423.

    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).