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Disclosery

Ring Mountain Capital, LLC: BRK-B position timeline

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

Ring Mountain Capital, LLC held 3,886 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 3,886 shares
    Change vs previous 13F +80 shares

    0.79% of the 13F portfolio, value $1,935,034.

    13F-HR 0002051343-26-000004 filed by Ring Mountain Capital, LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 3,806 shares
    Change vs previous 13F +32 shares

    0.8% of the 13F portfolio, value $1,904,484.

    13F-HR 0002051343-26-000003 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 3,774 shares
    Change vs previous 13F +34 shares

    0.99% of the 13F portfolio, value $1,809,000.

    13F-HR 0002051343-26-000002 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 3,740 shares
    Change vs previous 13F +86 shares

    0.95% of the 13F portfolio, value $1,845,000.

    13F-HR 0002051343-26-000001 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 3,654 shares
    Change vs previous 13F +91 shares

    1.02% of the 13F portfolio, value $1,837,000.

    13F-HR 0002051343-25-000005 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 3,563 shares
    Change vs previous 13F +283 shares

    1.03% of the 13F portfolio, value $1,688,149.

    13F-HR 0002051343-25-000004 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 3,280 shares
    Change vs previous 13F +252 shares

    1.31% of the 13F portfolio, value $1,746,862.

    13F-HR 0002051343-25-000003 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 3,028 shares
    Change vs previous 13F not available

    0.92% of the 13F portfolio, value $1,372,532.

    13F-HR 0002051343-25-000001 filed by Ring Mountain Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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