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Disclosery

Boston Trust Walden Corp: OSIS position timeline

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

Boston Trust Walden Corp held 82,102 OSIS 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 82,102 shares
    Change vs previous 13F -4,427 shares

    0.02% of the 13F portfolio, value $17,833,313.

    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 86,529 shares
    Change vs previous 13F +9,471 shares

    0.02% of the 13F portfolio, value $23,024,124.

    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 ended2025-12-31
    13F 77,058 shares
    Change vs previous 13F -21,037 shares

    0.02% of the 13F portfolio, value $19,996,512.

    13F-HR 0001386060-26-000014 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).

  4. period ended2025-09-30
    13F 98,095 shares
    Change vs previous 13F -157 shares

    0.03% of the 13F portfolio, value $24,467,669.

    13F-HR 0001386060-25-000020 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 ended2025-06-30
    13F/A 98,252 shares
    Change vs previous 13F +1,825 shares

    0.02% of the 13F portfolio, value $21,982,245.

    13F-HR/A 0001085146-25-004915 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).

  6. period ended2025-03-31
    13F 96,427 shares
    Change vs previous 13F -141,455 shares

    0.02% of the 13F portfolio, value $18,635,007.

    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).

  7. period ended2024-12-31
    13F 237,882 shares
    Change vs previous 13F +61,304 shares

    0.05% of the 13F portfolio, value $39,911,069.

    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).

  8. period ended2024-09-30
    13F 176,578 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $26,537,529.

    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).