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MPM BIOIMPACT LLC: DYN position timeline

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

MPM BIOIMPACT LLC held 1,922,093 DYN 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 1,922,093 shares
    Change vs previous 13F +513,941 shares

    2.6% of the 13F portfolio, value $42,689,686.

    13F-HR 0001193125-26-352199 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).

  2. period ended2026-03-31
    13F 1,408,152 shares
    Change vs previous 13F +2,764 shares

    1.97% of the 13F portfolio, value $25,529,796.

    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).

  3. period ended2025-12-31
    13F 1,405,388 shares
    Change vs previous 13F -40,973 shares

    3.15% of the 13F portfolio, value $27,489,389.

    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).

  4. period ended2025-09-30
    13F 1,446,361 shares
    Change vs previous 13F 0 shares

    3% of the 13F portfolio, value $18,296,467.

    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).

  5. period ended2025-06-30
    13F 1,446,361 shares
    Change vs previous 13F not available

    2.39% of the 13F portfolio, value $13,769,357.

    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).