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Granahan Investment Management, LLC: AMRC position timeline

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

Granahan Investment Management, LLC held 23,622 AMRC 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 23,622 shares
    Change vs previous 13F -606,451 shares

    0.02% of the 13F portfolio, value $651,967.

    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 630,073 shares
    Change vs previous 13F -217,934 shares

    0.78% of the 13F portfolio, value $16,066,861.

    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 848,007 shares
    Change vs previous 13F -42,065 shares

    1.06% of the 13F portfolio, value $24,838,125.

    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 890,072 shares
    Change vs previous 13F +462,875 shares

    1.22% of the 13F portfolio, value $29,888,618.

    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 427,197 shares
    Change vs previous 13F +10,701 shares

    0.26% of the 13F portfolio, value $6,489,122.

    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 416,496 shares
    Change vs previous 13F +405,879 shares

    0.25% of the 13F portfolio, value $5,031,272.

    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 10,617 shares
    Change vs previous 13F -97,997 shares

    0.01% of the 13F portfolio, value $249,287.

    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 108,614 shares
    Change vs previous 13F not available

    0.16% of the 13F portfolio, value $4,120,815.

    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).