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Disclosery

Mariner, LLC: BRK-B position timeline

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

Mariner, LLC held 1,244,906 BRK-B 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 1,244,906 shares
    Change vs previous 13F -11,171 shares

    0.65% of the 13F portfolio, value $622,923,526.

    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 1,256,077 shares
    Change vs previous 13F +39,927 shares

    0.7% of the 13F portfolio, value $601,887,817.

    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 1,216,150 shares
    Change vs previous 13F +83,245 shares

    0.73% of the 13F portfolio, value $611,316,994.

    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 1,132,905 shares
    Change vs previous 13F +39,229 shares

    0.74% of the 13F portfolio, value $569,549,808.

    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 1,093,676 shares
    Change vs previous 13F +15,801 shares

    0.77% of the 13F portfolio, value $531,273,866.

    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 1,077,875 shares
    Change vs previous 13F +25,771 shares

    0.96% of the 13F portfolio, value $574,022,571.

    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 1,052,104 shares
    Change vs previous 13F +20,515 shares

    0.8% of the 13F portfolio, value $476,894,515.

    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 1,031,589 shares
    Change vs previous 13F not available

    0.84% of the 13F portfolio, value $474,749,736.

    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).