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Disclosery

MPM BIOIMPACT LLC: RCKT position timeline

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

MPM BIOIMPACT LLC held 0 RCKT shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -1,586,076 shares

    13F-HR 0001193125-26-226995 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 ended2025-12-31
    13F 1,586,076 shares
    Change vs previous 13F -2,317,305 shares

    0.64% of the 13F portfolio, value $5,567,127.

    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).

  3. period ended2025-09-30
    13F 3,903,381 shares
    Change vs previous 13F +300 shares

    2.08% of the 13F portfolio, value $12,725,022.

    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).

  4. period ended2025-06-30
    13F 3,903,081 shares
    Change vs previous 13F +2,284,816 shares

    1.66% of the 13F portfolio, value $9,562,548.

    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).

  5. period ended2025-03-31
    13F 1,618,265 shares
    Change vs previous 13F +597,706 shares

    1.86% of the 13F portfolio, value $10,793,828.

    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).

  6. period ended2024-12-31
    13F 1,020,559 shares
    Change vs previous 13F -45,814 shares

    1.82% of the 13F portfolio, value $12,828,427.

    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).

  7. period ended2024-09-30
    13F 1,066,373 shares
    Change vs previous 13F not available

    2.95% of the 13F portfolio, value $19,695,909.

    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).