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Disclosery

Portolan Capital Management, LLC: ZGN position timeline

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

Portolan Capital Management, LLC held 753,948 ZGN 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 753,948 shares
    Change vs previous 13F +43,322 shares

    0.37% of the 13F portfolio, value $9,816,403.

    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 710,626 shares
    Change vs previous 13F +92 shares

    0.39% of the 13F portfolio, value $7,404,723.

    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 710,534 shares
    Change vs previous 13F -658,642 shares

    0.39% of the 13F portfolio, value $7,282,974.

    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 1,369,176 shares
    Change vs previous 13F +185,190 shares

    0.7% of the 13F portfolio, value $12,938,713.

    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 1,183,986 shares
    Change vs previous 13F +226,784 shares

    0.63% of the 13F portfolio, value $10,123,080.

    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 957,202 shares
    Change vs previous 13F +551,465 shares

    0.54% of the 13F portfolio, value $7,083,295.

    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 405,737 shares
    Change vs previous 13F not available

    0.23% of the 13F portfolio, value $3,351,388.

    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).