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Disclosery

Portolan Capital Management, LLC: AMBA position timeline

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

Portolan Capital Management, LLC held 97,072 AMBA 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 97,072 shares
    Change vs previous 13F -11,677 shares

    0.31% of the 13F portfolio, value $8,328,778.

    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 108,749 shares
    Change vs previous 13F +54,507 shares

    0.3% of the 13F portfolio, value $5,597,855.

    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 54,242 shares
    Change vs previous 13F not available

    0.21% of the 13F portfolio, value $3,842,503.

    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).