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NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: BRK-B position timeline

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

NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC held 503,937 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 503,937 shares
    Change vs previous 13F +3,460 shares

    0.13% of the 13F portfolio, value $252,164,975.

    13F-HR 0001141802-26-000015 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 445,157 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,780 shares

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

  2. period ended2026-03-31
    13F 500,477 shares
    Change vs previous 13F -5,520 shares

    0.14% of the 13F portfolio, value $239,828,518.

    13F-HR 0001085146-26-000398 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 441,801 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,676 shares

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

  3. period ended2025-12-31
    13F/A 505,997 shares
    Change vs previous 13F -22,918 shares

    0.15% of the 13F portfolio, value $254,339,183.

    13F-HR/A 0001141802-26-000007 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 447,406 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,591 shares

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

  4. period ended2025-09-30
    13F 528,915 shares
    Change vs previous 13F -4,369 shares

    0.17% of the 13F portfolio, value $265,906,349.

    13F-HR 0001141802-25-000013 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 470,470 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,445 shares

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

  5. period ended2025-06-30
    13F 533,284 shares
    Change vs previous 13F +4,353 shares

    0.18% of the 13F portfolio, value $259,052,837.

    13F-HR 0001085146-25-004957 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 474,786 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,498 shares

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

  6. period ended2025-03-31
    13F 528,931 shares
    Change vs previous 13F -85,536 shares

    0.22% of the 13F portfolio, value $281,697,207.

    13F-HR 0001085146-25-003139 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 470,634 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,297 shares

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

  7. period ended2024-12-31
    13F 614,467 shares
    Change vs previous 13F +14,927 shares

    0.23% of the 13F portfolio, value $278,525,374.

    13F-HR 0001085146-25-000995 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 556,268 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,199 shares

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

  8. period ended2024-09-30
    13F 599,540 shares
    Change vs previous 13F not available

    0.24% of the 13F portfolio, value $275,943,656.

    13F-HR 0001085146-24-005524 filed by NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

    • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO: 541,485 shares
    • NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC: 58,055 shares

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