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Disclosery

Mariner, LLC: BIIB position timeline

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

Mariner, LLC held 87,374 BIIB shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 87,374 shares
    Change vs previous 13F +15,338 shares

    0.02% of the 13F portfolio, value $18,878,142.

    13F-HR 0001580642-26-005266 filed by Mariner, 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 72,036 shares
    Change vs previous 13F +19,561 shares

    0.02% of the 13F portfolio, value $13,207,604.

    13F-HR 0001580642-26-003158 filed by Mariner, 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 52,475 shares
    Change vs previous 13F +4,961 shares

    0.01% of the 13F portfolio, value $9,237,731.

    13F-HR 0001580642-26-001057 filed by Mariner, 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 47,514 shares
    Change vs previous 13F +11,599 shares

    0.01% of the 13F portfolio, value $6,655,791.

    13F-HR 0001580642-25-007297 filed by Mariner, 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 35,915 shares
    Change vs previous 13F +11,910 shares

    0.01% of the 13F portfolio, value $4,511,111.

    13F-HR 0001580642-25-005128 filed by Mariner, 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 24,005 shares
    Change vs previous 13F +5,039 shares

    0.01% of the 13F portfolio, value $3,285,193.

    13F-HR 0001580642-25-003135 filed by Mariner, 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 18,966 shares
    Change vs previous 13F -1,001 shares

    <0.01% of the 13F portfolio, value $2,900,264.

    13F-HR 0001580642-25-000997 filed by Mariner, 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 19,967 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $3,871,000.

    13F-HR 0001580642-24-006919 filed by Mariner, LLC
    Filed (acceptance time not in the bulk data set), ingested

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