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Granahan Investment Management, LLC: MEC position timeline

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

Granahan Investment Management, LLC held 324,108 MEC 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 324,108 shares
    Change vs previous 13F -63,362 shares

    0.43% of the 13F portfolio, value $12,141,086.

    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 387,470 shares
    Change vs previous 13F +119,708 shares

    0.34% of the 13F portfolio, value $6,955,087.

    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 267,762 shares
    Change vs previous 13F -81,505 shares

    0.21% of the 13F portfolio, value $5,012,505.

    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 349,267 shares
    Change vs previous 13F -149,038 shares

    0.2% of the 13F portfolio, value $4,805,914.

    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 498,305 shares
    Change vs previous 13F +20,267 shares

    0.32% of the 13F portfolio, value $7,952,948.

    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 478,038 shares
    Change vs previous 13F -100,929 shares

    0.32% of the 13F portfolio, value $6,420,050.

    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 578,967 shares
    Change vs previous 13F +240,752 shares

    0.38% of the 13F portfolio, value $9,101,361.

    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 338,215 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $7,129,572.

    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).