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Disclosery

First County Bank /CT/: BIIB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of First County Bank /CT/ on BIIB, newest first. How the timeline and the estimate are built.

First County Bank /CT/ held 3,933 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-07-02.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 3,933 shares
    Change vs previous 13F -233 shares

    0.4% of the 13F portfolio, value $849,764.

    13F-HR 0001140361-26-027342 filed by First County Bank /CT/
    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 4,166 shares
    Change vs previous 13F -246 shares

    0.41% of the 13F portfolio, value $763,753.

    13F-HR 0001140361-26-013150 filed by First County Bank /CT/
    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 4,412 shares
    Change vs previous 13F -65 shares

    0.41% of the 13F portfolio, value $776,468.

    13F-HR 0001140361-26-001163 filed by First County Bank /CT/
    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 4,477 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $627,138.

    13F-HR 0001140361-25-037686 filed by First County Bank /CT/
    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 4,477 shares
    Change vs previous 13F -295 shares

    0.3% of the 13F portfolio, value $562,266.

    13F-HR 0001140361-25-026158 filed by First County Bank /CT/
    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 4,772 shares
    Change vs previous 13F not available

    0.36% of the 13F portfolio, value $653,000.

    13F-HR 0001140361-25-012623 filed by First County Bank /CT/
    Filed (acceptance time not in the bulk data set), ingested

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