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Disclosery

Tandem Investment Partners LLC: AMGN position timeline

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

Tandem Investment Partners LLC held 1,348 AMGN shares at 2026-06-30 per its 13F-HR filed 2026-07-27.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,348 shares
    Change vs previous 13F -194 shares

    0.38% of the 13F portfolio, value $488,138.

    13F-HR 0001172661-26-002827 filed by Tandem Investment Partners 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 1,542 shares
    Change vs previous 13F -146 shares

    0.46% of the 13F portfolio, value $542,553.

    13F-HR 0001172661-26-001751 filed by Tandem Investment Partners 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 1,688 shares
    Change vs previous 13F -354 shares

    0.47% of the 13F portfolio, value $552,499.

    13F-HR 0001172661-26-000247 filed by Tandem Investment Partners 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 2,042 shares
    Change vs previous 13F -5 shares

    0.47% of the 13F portfolio, value $576,252.

    13F-HR 0001172661-25-004420 filed by Tandem Investment Partners 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 2,047 shares
    Change vs previous 13F +300 shares

    0.5% of the 13F portfolio, value $571,543.

    13F-HR 0001172661-25-002664 filed by Tandem Investment Partners 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 1,747 shares
    Change vs previous 13F 0 shares

    0.54% of the 13F portfolio, value $544,278.

    13F-HR 0001172661-25-001623 filed by Tandem Investment Partners 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 1,747 shares
    Change vs previous 13F not available

    0.44% of the 13F portfolio, value $455,338.

    13F-HR 0001172661-25-000731 filed by Tandem Investment Partners LLC
    Filed (acceptance time not in the bulk data set), ingested

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