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OSTRUM ASSET MANAGEMENT: KOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OSTRUM ASSET MANAGEMENT on KOS, newest first. How the timeline and the estimate are built.

OSTRUM ASSET MANAGEMENT held 4,008,525 KOS shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,008,525 shares
    Change vs previous 13F 0 shares

    0.41% of the 13F portfolio, value $8,457,988.

    13F-HR 0001104659-26-095882 filed by OSTRUM ASSET MANAGEMENT
    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 4,008,525 shares
    Change vs previous 13F 0 shares

    0.63% of the 13F portfolio, value $11,143,700.

    13F-HR 0001104659-26-061164 filed by OSTRUM ASSET MANAGEMENT
    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 4,008,525 shares
    Change vs previous 13F 0 shares

    0.17% of the 13F portfolio, value $3,637,336.

    13F-HR 0001104659-26-015183 filed by OSTRUM ASSET MANAGEMENT
    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 4,008,525 shares
    Change vs previous 13F 0 shares

    0.3% of the 13F portfolio, value $6,654,152.

    13F-HR 0001104659-25-111991 filed by OSTRUM ASSET MANAGEMENT
    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 4,008,525 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $6,894,663.

    13F-HR 0001104659-25-077550 filed by OSTRUM ASSET MANAGEMENT
    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 4,008,525 shares
    Change vs previous 13F not available

    0.48% of the 13F portfolio, value $9,139,437.

    13F-HR 0001104659-25-048517 filed by OSTRUM ASSET MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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