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Disclosery

IRON Financial LLC: BRK-B position timeline

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

IRON Financial LLC held 1,478 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-22.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,478 shares
    Change vs previous 13F -157 shares

    0.31% of the 13F portfolio, value $739,577.

    13F-HR 0001595509-26-000005 filed by IRON Financial 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 1,635 shares
    Change vs previous 13F +80 shares

    0.34% of the 13F portfolio, value $783,492.

    13F-HR 0001595509-26-000003 filed by IRON Financial 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 1,555 shares
    Change vs previous 13F -1 shares

    0.36% of the 13F portfolio, value $781,621.

    13F-HR 0001595509-26-000001 filed by IRON Financial 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 1,556 shares
    Change vs previous 13F -2 shares

    0.37% of the 13F portfolio, value $782,264.

    13F-HR 0001595509-25-000008 filed by IRON Financial 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 1,558 shares
    Change vs previous 13F +301 shares

    0.4% of the 13F portfolio, value $756,830.

    13F-HR 0001595509-25-000006 filed by IRON Financial 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 1,257 shares
    Change vs previous 13F +244 shares

    0.38% of the 13F portfolio, value $669,454.

    13F-HR 0001595509-25-000004 filed by IRON Financial 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 1,013 shares
    Change vs previous 13F 0 shares

    0.26% of the 13F portfolio, value $459,173.

    13F-HR 0001595509-25-000003 filed by IRON Financial 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 1,013 shares
    Change vs previous 13F not available

    0.25% of the 13F portfolio, value $466,244.

    13F-HR 0001595509-24-000006 filed by IRON Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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