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Disclosery

Boston Trust Walden Corp: KOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Boston Trust Walden Corp on KOS, newest first. How the timeline and the estimate are built.

Boston Trust Walden Corp held 4,097,453 KOS shares at 2026-06-30 per its 13F-HR filed 2026-08-04.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,097,453 shares
    Change vs previous 13F -659,118 shares

    0.01% of the 13F portfolio, value $8,931,635.

    13F-HR 0001386060-26-000035 filed by Boston Partners
    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 4,756,571 shares
    Change vs previous 13F +4,756,571 shares

    0.01% of the 13F portfolio, value $13,346,008.

    13F-HR 0001386060-26-000017 filed by Boston Partners
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -661,121 shares

    13F-HR 0001085146-25-002987 filed by Boston Partners
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  4. period ended2024-12-31
    13F 661,121 shares
    Change vs previous 13F -4,362,832 shares

    <0.01% of the 13F portfolio, value $2,261,031.

    13F-HR 0001085146-25-000961 filed by Boston Partners
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-09-30
    13F 5,023,953 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $20,353,051.

    13F-HR 0001085146-24-005518 filed by Boston Partners
    Filed (acceptance time not in the bulk data set), ingested

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