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Granahan Investment Management, LLC: BLFS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Granahan Investment Management, LLC on BLFS, newest first. How the timeline and the estimate are built.

Granahan Investment Management, LLC held 521,430 BLFS 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 521,430 shares
    Change vs previous 13F -200,627 shares

    0.52% of the 13F portfolio, value $14,725,183.

    13F-HR 0001398344-26-014483 filed by Granahan Investment Management, 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 722,057 shares
    Change vs previous 13F +239,701 shares

    0.67% of the 13F portfolio, value $13,776,848.

    13F-HR 0001398344-26-009220 filed by Granahan Investment Management, 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 482,356 shares
    Change vs previous 13F +90,260 shares

    0.5% of the 13F portfolio, value $11,663,368.

    13F-HR 0001398344-26-003202 filed by Granahan Investment Management, 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 392,096 shares
    Change vs previous 13F -251,104 shares

    0.41% of the 13F portfolio, value $10,002,369.

    13F-HR 0001398344-25-020897 filed by Granahan Investment Management, 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 643,200 shares
    Change vs previous 13F +203,700 shares

    0.56% of the 13F portfolio, value $13,854,528.

    13F-HR 0001398344-25-015412 filed by Granahan Investment Management, 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 439,500 shares
    Change vs previous 13F -17,507 shares

    0.5% of the 13F portfolio, value $10,038,180.

    13F-HR 0001398344-25-009461 filed by Granahan Investment Management, 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 457,007 shares
    Change vs previous 13F -201,627 shares

    0.5% of the 13F portfolio, value $11,863,902.

    13F-HR 0001398344-25-002765 filed by Granahan Investment Management, 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 658,634 shares
    Change vs previous 13F not available

    0.65% of the 13F portfolio, value $16,492,195.

    13F-HR 0001398344-24-020730 filed by Granahan Investment Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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