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Disclosery

Flagship Pioneering, LLC: GENB position timeline

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

Flagship Pioneering, LLC held 62,673,117 GENB 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 62,673,117 shares
    Change vs previous 13F 0 shares

    68.66% of the 13F portfolio, value $1,057,295,483.

    13F-HR 0001193125-26-352122 filed by Flagship Pioneering, 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 62,673,117 shares
    Change vs previous 13F not available

    67.44% of the 13F portfolio, value $783,413,963.

    13F-HR 0001193125-26-226588 filed by Flagship Pioneering, LLC
    Filed (acceptance time not in the bulk data set), ingested

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