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BROWN BROTHERS HARRIMAN & CO: MRNA position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BROWN BROTHERS HARRIMAN & CO on MRNA, newest first. How the timeline and the estimate are built.

BROWN BROTHERS HARRIMAN & CO held 8,626 MRNA shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 8,626 shares
    Change vs previous 13F +1,783 shares

    <0.01% of the 13F portfolio, value $604,079.

    13F-HR 0001104659-26-094581 filed by BROWN BROTHERS HARRIMAN & CO
    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 6,843 shares
    Change vs previous 13F +4,172 shares

    <0.01% of the 13F portfolio, value $347,624.

    13F-HR 0001104659-26-060871 filed by BROWN BROTHERS HARRIMAN & CO
    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 2,671 shares
    Change vs previous 13F +699 shares

    <0.01% of the 13F portfolio, value $78,768.

    13F-HR 0001104659-26-014005 filed by BROWN BROTHERS HARRIMAN & CO
    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 1,972 shares
    Change vs previous 13F +1,240 shares

    <0.01% of the 13F portfolio, value $50,937.

    13F-HR 0001104659-25-111114 filed by BROWN BROTHERS HARRIMAN & CO
    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 732 shares
    Change vs previous 13F +292 shares

    <0.01% of the 13F portfolio, value $20,196.

    13F-HR 0001104659-25-076057 filed by BROWN BROTHERS HARRIMAN & CO
    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 440 shares
    Change vs previous 13F -69 shares

    <0.01% of the 13F portfolio, value $12,474.

    13F-HR 0001104659-25-048255 filed by BROWN BROTHERS HARRIMAN & CO
    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 509 shares
    Change vs previous 13F -23 shares

    <0.01% of the 13F portfolio, value $21,164.

    13F-HR 0001104659-25-011961 filed by BROWN BROTHERS HARRIMAN & CO
    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 532 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $35,554.

    13F-HR 0001104659-24-117355 filed by BROWN BROTHERS HARRIMAN & CO
    Filed (acceptance time not in the bulk data set), ingested

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