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Disclosery

BLAIR WILLIAM & CO/IL: CWST position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on CWST, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 171,981 CWST shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 171,981 shares
    Change vs previous 13F -118,483 shares

    0.04% of the 13F portfolio, value $16,676,996.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    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 290,464 shares
    Change vs previous 13F +11,343 shares

    0.07% of the 13F portfolio, value $23,045,398.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    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 279,121 shares
    Change vs previous 13F +11,143 shares

    0.07% of the 13F portfolio, value $27,337,111.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    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 267,978 shares
    Change vs previous 13F +94,453 shares

    0.07% of the 13F portfolio, value $25,425,753.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    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 173,525 shares
    Change vs previous 13F +21,504 shares

    0.06% of the 13F portfolio, value $20,021,315.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    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 152,021 shares
    Change vs previous 13F +121,825 shares

    0.05% of the 13F portfolio, value $16,951,862.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    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 30,196 shares
    Change vs previous 13F +22,726 shares

    0.01% of the 13F portfolio, value $3,195,039.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    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 7,470 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $743,190.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

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