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Disclosery

Portolan Capital Management, LLC: BELFB position timeline

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

Portolan Capital Management, LLC held 47,856 BELFB 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 47,856 shares
    Change vs previous 13F -5,314 shares

    0.6% of the 13F portfolio, value $15,937,962.

    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 53,170 shares
    Change vs previous 13F -86,343 shares

    0.56% of the 13F portfolio, value $10,526,597.

    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 139,513 shares
    Change vs previous 13F +15,747 shares

    1.27% of the 13F portfolio, value $23,665,590.

    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 123,766 shares
    Change vs previous 13F +61,240 shares

    0.94% of the 13F portfolio, value $17,453,481.

    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 62,526 shares
    Change vs previous 13F -121,698 shares

    0.38% of the 13F portfolio, value $6,108,165.

    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 184,224 shares
    Change vs previous 13F -24,246 shares

    1.05% of the 13F portfolio, value $13,791,009.

    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 208,470 shares
    Change vs previous 13F +87,612 shares

    1.16% of the 13F portfolio, value $17,192,521.

    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 120,858 shares
    Change vs previous 13F not available

    0.69% of the 13F portfolio, value $9,488,562.

    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).