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Disclosery

Westmount Partners, LLC: BRK-B position timeline

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

Westmount Partners, LLC held 17,149 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 17,149 shares
    Change vs previous 13F -1,172 shares

    1.89% of the 13F portfolio, value $8,581,188.

    13F-HR 0002051491-26-000004 filed by Westmount Partners, 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 18,321 shares
    Change vs previous 13F +1,272 shares

    2.16% of the 13F portfolio, value $8,779,423.

    13F-HR 0002051491-26-000003 filed by Westmount Partners, 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 17,049 shares
    Change vs previous 13F +144 shares

    2.14% of the 13F portfolio, value $8,569,680.

    13F-HR 0002051491-26-000001 filed by Westmount Partners, 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 16,905 shares
    Change vs previous 13F -203 shares

    2.17% of the 13F portfolio, value $8,422,071.

    13F-HR 0002051491-25-000017 filed by Westmount Partners, 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 17,108 shares
    Change vs previous 13F +44 shares

    2.28% of the 13F portfolio, value $8,310,553.

    13F-HR 0002051491-25-000015 filed by Westmount Partners, 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 17,064 shares
    Change vs previous 13F -313 shares

    2.77% of the 13F portfolio, value $9,087,945.

    13F-HR 0002051491-25-000013 filed by Westmount Partners, 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 17,377 shares
    Change vs previous 13F +2,801 shares

    2.39% of the 13F portfolio, value $7,876,647.

    13F-HR 0002051491-25-000002 filed by Westmount Partners, 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 14,576 shares
    Change vs previous 13F not available

    2.02% of the 13F portfolio, value $6,708,750.

    13F-HR 0002051491-25-000001 filed by Westmount Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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