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Disclosery

MPM BIOIMPACT LLC: CMPX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MPM BIOIMPACT LLC on CMPX, newest first. How the timeline and the estimate are built.

MPM BIOIMPACT LLC held 0 CMPX shares at 2025-12-31 per its 13F-HR filed 2026-02-17.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -5,075,970 shares

    13F-HR 0001193125-26-054813 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-09-30
    13F 5,075,970 shares
    Change vs previous 13F -546,535 shares

    2.91% of the 13F portfolio, value $17,765,895.

    13F-HR 0001193125-25-283112 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-06-30
    13F 5,622,505 shares
    Change vs previous 13F -2,820,278 shares

    2.53% of the 13F portfolio, value $14,618,513.

    13F-HR 0000950123-25-008431 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-03-31
    13F 8,442,783 shares
    Change vs previous 13F -125,113 shares

    2.76% of the 13F portfolio, value $16,041,288.

    13F-HR 0000950123-25-005756 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2024-12-31
    13F 8,567,896 shares
    Change vs previous 13F +2,926,002 shares

    1.76% of the 13F portfolio, value $12,423,449.

    13F-HR 0000950123-25-002794 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2024-09-30
    13F 5,641,894 shares
    Change vs previous 13F not available

    1.56% of the 13F portfolio, value $10,381,085.

    13F-HR 0000950123-24-011026 filed by MPM BIOIMPACT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).