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Portolan Capital Management, LLC: UTHR position timeline

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

Portolan Capital Management, LLC held 81,518 UTHR 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 81,518 shares
    Change vs previous 13F +18,083 shares

    1.65% of the 13F portfolio, value $44,168,898.

    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 63,435 shares
    Change vs previous 13F +26,682 shares

    2% of the 13F portfolio, value $37,615,686.

    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 36,753 shares
    Change vs previous 13F +18,677 shares

    0.96% of the 13F portfolio, value $17,907,899.

    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 18,076 shares
    Change vs previous 13F -12,687 shares

    0.41% of the 13F portfolio, value $7,577,640.

    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 30,763 shares
    Change vs previous 13F -14,305 shares

    0.55% of the 13F portfolio, value $8,839,748.

    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 45,068 shares
    Change vs previous 13F +30,819 shares

    1.06% of the 13F portfolio, value $13,893,112.

    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 14,249 shares
    Change vs previous 13F -16,257 shares

    0.34% of the 13F portfolio, value $5,027,617.

    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 30,506 shares
    Change vs previous 13F not available

    0.79% of the 13F portfolio, value $10,931,825.

    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).