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Disclosery

CHELSEA COUNSEL CO: MPLX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CHELSEA COUNSEL CO on MPLX, newest first. How the timeline and the estimate are built.

CHELSEA COUNSEL CO held 25,000 MPLX 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 25,000 shares
    Change vs previous 13F 0 shares

    0.6% of the 13F portfolio, value $1,408,250.

    13F-HR 0001420506-26-001529 filed by CHELSEA COUNSEL CO
    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/A 25,000 shares
    Change vs previous 13F 0 shares

    0.63% of the 13F portfolio, value $1,426,750.

    13F-HR/A 0001420506-26-001179 filed by CHELSEA COUNSEL CO
    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 25,000 shares
    Change vs previous 13F 0 shares

    0.57% of the 13F portfolio, value $1,334,250.

    13F-HR 0001420506-26-000608 filed by CHELSEA COUNSEL CO
    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 25,000 shares
    Change vs previous 13F 0 shares

    0.55% of the 13F portfolio, value $1,248,750.

    13F-HR 0001420506-25-003485 filed by CHELSEA COUNSEL CO
    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 25,000 shares
    Change vs previous 13F 0 shares

    0.64% of the 13F portfolio, value $1,287,750.

    13F-HR 0001420506-25-001525 filed by CHELSEA COUNSEL CO
    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 25,000 shares
    Change vs previous 13F +10,000 shares

    0.73% of the 13F portfolio, value $1,338,000.

    13F-HR 0001420506-25-001334 filed by CHELSEA COUNSEL CO
    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 15,000 shares
    Change vs previous 13F 0 shares

    0.37% of the 13F portfolio, value $717,900.

    13F-HR 0001420506-25-000653 filed by CHELSEA COUNSEL CO
    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 15,000 shares
    Change vs previous 13F not available

    0.33% of the 13F portfolio, value $666,900.

    13F-HR 0001420506-24-002603 filed by CHELSEA COUNSEL CO
    Filed (acceptance time not in the bulk data set), ingested

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