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BERKSHIRE ASSET MANAGEMENT LLC/PA: AMGN position timeline

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

BERKSHIRE ASSET MANAGEMENT LLC/PA held 26,566 AMGN shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 26,566 shares
    Change vs previous 13F -172 shares

    0.38% of the 13F portfolio, value $9,619,956.

    13F-HR 0001398344-26-013514 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 26,738 shares
    Change vs previous 13F -498 shares

    0.4% of the 13F portfolio, value $9,407,628.

    13F-HR 0001398344-26-008838 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 27,236 shares
    Change vs previous 13F +356 shares

    0.39% of the 13F portfolio, value $8,914,503.

    13F-HR 0001398344-26-003197 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 26,880 shares
    Change vs previous 13F -649 shares

    0.32% of the 13F portfolio, value $7,585,440.

    13F-HR 0001398344-25-020486 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 27,529 shares
    Change vs previous 13F -402 shares

    0.35% of the 13F portfolio, value $7,686,277.

    13F-HR 0001398344-25-015201 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 27,931 shares
    Change vs previous 13F -690 shares

    0.36% of the 13F portfolio, value $7,598,536.

    13F-HR 0001398344-25-009324 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 28,621 shares
    Change vs previous 13F -853 shares

    0.37% of the 13F portfolio, value $7,882,767.

    13F-HR 0001398344-25-002126 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    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 29,474 shares
    Change vs previous 13F not available

    0.47% of the 13F portfolio, value $9,209,237.

    13F-HR 0001398344-24-020774 filed by BERKSHIRE ASSET MANAGEMENT LLC/PA
    Filed (acceptance time not in the bulk data set), ingested

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