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Birch Hill Investment Advisors LLC: GNTX position timeline

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

Birch Hill Investment Advisors LLC held 148,728 GNTX shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 148,728 shares
    Change vs previous 13F -5,222 shares

    0.15% of the 13F portfolio, value $3,758,357.

    13F-HR 0001172661-26-002717 filed by Birch Hill Investment Advisors 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 153,950 shares
    Change vs previous 13F -14,038 shares

    0.15% of the 13F portfolio, value $3,363,807.

    13F-HR 0001172661-26-001564 filed by Birch Hill Investment Advisors 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 167,988 shares
    Change vs previous 13F -42,259 shares

    0.16% of the 13F portfolio, value $3,909,081.

    13F-HR 0001172661-26-000323 filed by Birch Hill Investment Advisors 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 210,247 shares
    Change vs previous 13F -23,048 shares

    0.25% of the 13F portfolio, value $5,949,990.

    13F-HR 0001172661-25-004406 filed by Birch Hill Investment Advisors 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 233,295 shares
    Change vs previous 13F -83,460 shares

    0.23% of the 13F portfolio, value $5,130,157.

    13F-HR 0001172661-25-002792 filed by Birch Hill Investment Advisors 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 316,755 shares
    Change vs previous 13F -179,695 shares

    0.35% of the 13F portfolio, value $7,380,391.

    13F-HR 0001172661-25-001512 filed by Birch Hill Investment Advisors 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 496,450 shares
    Change vs previous 13F -49,218 shares

    0.66% of the 13F portfolio, value $14,263,008.

    13F-HR 0001172661-25-000385 filed by Birch Hill Investment Advisors 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 545,668 shares
    Change vs previous 13F not available

    0.76% of the 13F portfolio, value $16,200,883.

    13F-HR 0001172661-24-004212 filed by Birch Hill Investment Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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