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Bain Capital Life Sciences Investors, LLC: RBRK 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 RBRK, newest first. How the timeline and the estimate are built.

Bain Capital Life Sciences Investors, LLC held 0 RBRK 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 0 shares
    Change vs previous 13F -659,640 shares

    13F-HR 0001193125-26-350468 filed by BAIN CAPITAL VENTURE INVESTORS, 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 ended2026-03-31
    13F 659,640 shares
    Change vs previous 13F 0 shares

    18.46% of the 13F portfolio, value $32,302,571.

    13F-HR 0001193125-26-225238 filed by BAIN CAPITAL VENTURE INVESTORS, 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 659,640 shares
    Change vs previous 13F -700,000 shares

    19.8% of the 13F portfolio, value $50,449,267.

    13F-HR 0001193125-26-052965 filed by BAIN CAPITAL VENTURE INVESTORS, 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 1,359,640 shares
    Change vs previous 13F 0 shares

    98.23% of the 13F portfolio, value $111,830,390.

    13F-HR 0001193125-25-281483 filed by BAIN CAPITAL VENTURE INVESTORS, 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 1,359,640 shares
    Change vs previous 13F -1,400,000 shares

    98.31% of the 13F portfolio, value $121,810,148.

    13F-HR 0000950123-25-007996 filed by BAIN CAPITAL VENTURE INVESTORS, LLC
    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 2,759,640 shares
    Change vs previous 13F 0 shares

    84.34% of the 13F portfolio, value $168,282,847.

    13F-HR 0000950123-25-005480 filed by BAIN CAPITAL VENTURE INVESTORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 2,759,640 shares
    Change vs previous 13F 0 shares

    82.09% of the 13F portfolio, value $180,370,070.

    13F-HR 0000950123-25-002258 filed by BAIN CAPITAL VENTURE INVESTORS, LLC
    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 2,759,640 shares
    Change vs previous 13F not available

    73.44% of the 13F portfolio, value $88,722,426.

    13F-HR 0000950123-24-011429 filed by BAIN CAPITAL VENTURE INVESTORS, LLC
    Filed (acceptance time not in the bulk data set), ingested

    • BAIN CAPITAL VENTURE INVESTORS, LLC: 2,759,640 shares
    • Bain Capital Public Equity Management II, LLC: 0 shares
    • Bain Capital Public Equity, LP: 0 shares

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