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Portolan Capital Management, LLC: CLBT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Portolan Capital Management, LLC on CLBT, newest first. How the timeline and the estimate are built.

Portolan Capital Management, LLC held 1,932,514 CLBT shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,932,514 shares
    Change vs previous 13F -248,410 shares

    1.06% of the 13F portfolio, value $28,214,704.

    13F-HR 0001104659-26-096980 filed by Portolan Capital Management, LLC
    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 2,180,924 shares
    Change vs previous 13F +893,637 shares

    1.6% of the 13F portfolio, value $30,053,133.

    13F-HR 0001104659-26-062488 filed by Portolan Capital Management, LLC
    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 1,287,287 shares
    Change vs previous 13F -1,132,375 shares

    1.24% of the 13F portfolio, value $23,209,785.

    13F-HR 0001104659-26-016304 filed by Portolan Capital Management, LLC
    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 2,419,662 shares
    Change vs previous 13F +1,407,818 shares

    2.43% of the 13F portfolio, value $44,836,337.

    13F-HR 0001104659-25-111284 filed by Portolan Capital Management, LLC
    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 1,011,844 shares
    Change vs previous 13F +22,852 shares

    1.02% of the 13F portfolio, value $16,189,504.

    13F-HR 0001104659-25-077571 filed by Portolan Capital Management, LLC
    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 988,992 shares
    Change vs previous 13F +74,136 shares

    1.46% of the 13F portfolio, value $19,216,115.

    13F-HR 0001104659-25-049320 filed by Portolan Capital Management, LLC
    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 914,856 shares
    Change vs previous 13F -309,164 shares

    1.36% of the 13F portfolio, value $20,154,278.

    13F-HR 0001104659-25-012988 filed by Portolan Capital Management, LLC
    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 1,224,020 shares
    Change vs previous 13F not available

    1.49% of the 13F portfolio, value $20,612,497.

    13F-HR 0001104659-24-118686 filed by Portolan Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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