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Disclosery

Portolan Capital Management, LLC: MAMA position timeline

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

Portolan Capital Management, LLC held 984,869 MAMA 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 984,869 shares
    Change vs previous 13F -192,067 shares

    0.66% of the 13F portfolio, value $17,579,912.

    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 1,176,936 shares
    Change vs previous 13F -68,831 shares

    0.96% of the 13F portfolio, value $18,054,198.

    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 1,245,767 shares
    Change vs previous 13F -789,161 shares

    0.9% of the 13F portfolio, value $16,805,397.

    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 2,034,928 shares
    Change vs previous 13F -130,622 shares

    1.16% of the 13F portfolio, value $21,387,093.

    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 2,165,550 shares
    Change vs previous 13F +348,257 shares

    1.13% of the 13F portfolio, value $17,974,065.

    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 1,817,293 shares
    Change vs previous 13F +998,789 shares

    0.9% of the 13F portfolio, value $11,830,577.

    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 818,504 shares
    Change vs previous 13F -135,125 shares

    0.44% of the 13F portfolio, value $6,515,292.

    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 953,629 shares
    Change vs previous 13F not available

    0.5% of the 13F portfolio, value $6,961,492.

    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).