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Bain Capital Life Sciences Investors, LLC: BKLN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Bain Capital Life Sciences Investors, LLC on BKLN, newest first. How the timeline and the estimate are built.

Bain Capital Life Sciences Investors, LLC held 3,971,884 BKLN 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 3,971,884 shares
    Change vs previous 13F +313,786 shares

    21.99% of the 13F portfolio, value $80,907,277.

    13F-HR 0001193125-26-350236 filed by Bain Capital Credit, LP
    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 3,658,098 shares
    Change vs previous 13F -3,469,019 shares

    24.64% of the 13F portfolio, value $74,661,780.

    13F-HR 0001317947-26-000005 filed by Bain Capital Credit, LP
    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 7,127,117 shares
    Change vs previous 13F +1,715,807 shares

    39.15% of the 13F portfolio, value $149,669,457.

    13F-HR 0001317947-26-000002 filed by Bain Capital Credit, LP
    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 5,411,310 shares
    Change vs previous 13F +1,849,508 shares

    35.72% of the 13F portfolio, value $113,258,718.

    13F-HR 0001317947-25-000011 filed by Bain Capital Credit, LP
    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 3,561,802 shares
    Change vs previous 13F +784,368 shares

    27.04% of the 13F portfolio, value $74,512,898.

    13F-HR 0001317947-25-000007 filed by Bain Capital Credit, LP
    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 2,777,434 shares
    Change vs previous 13F -250,209 shares

    14.06% of the 13F portfolio, value $57,492,884.

    13F-HR 0001317947-25-000004 filed by Bain Capital Credit, LP
    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 3,027,643 shares
    Change vs previous 13F -793,202 shares

    14.2% of the 13F portfolio, value $63,792,438.

    13F-HR 0001317947-25-000002 filed by Bain Capital Credit, LP
    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 3,820,845 shares
    Change vs previous 13F not available

    16.6% of the 13F portfolio, value $80,275,953.

    13F-HR 0001317947-24-000008 filed by Bain Capital Credit, LP
    Filed (acceptance time not in the bulk data set), ingested

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