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GRANDFIELD & DODD, LLC: GLW position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GRANDFIELD & DODD, LLC on GLW, newest first. How the timeline and the estimate are built.

GRANDFIELD & DODD, LLC held 47,126 GLW shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 47,126 shares
    Change vs previous 13F -18,838 shares

    0.63% of the 13F portfolio, value $12,037,394.

    13F-HR 0001308016-26-000004 filed by GRANDFIELD & DODD, 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 65,964 shares
    Change vs previous 13F -3,590 shares

    0.51% of the 13F portfolio, value $8,969,125.

    13F-HR 0001308016-26-000002 filed by GRANDFIELD & DODD, 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 69,554 shares
    Change vs previous 13F -13,920 shares

    0.34% of the 13F portfolio, value $6,090,148.

    13F-HR 0001308016-26-000001 filed by GRANDFIELD & DODD, 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 83,474 shares
    Change vs previous 13F -36,291 shares

    0.39% of the 13F portfolio, value $6,847,418.

    13F-HR 0001308016-25-000004 filed by GRANDFIELD & DODD, 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 119,765 shares
    Change vs previous 13F -48,379 shares

    0.37% of the 13F portfolio, value $6,298,492.

    13F-HR 0001085146-25-004722 filed by GRANDFIELD & DODD, 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 168,144 shares
    Change vs previous 13F -114,973 shares

    0.48% of the 13F portfolio, value $7,697,635.

    13F-HR 0001085146-25-002562 filed by GRANDFIELD & DODD, 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 283,117 shares
    Change vs previous 13F -57,332 shares

    0.83% of the 13F portfolio, value $13,453,721.

    13F-HR 0001085146-25-000843 filed by GRANDFIELD & DODD, 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 340,449 shares
    Change vs previous 13F not available

    0.91% of the 13F portfolio, value $15,371,275.

    13F-HR 0001085146-24-005469 filed by GRANDFIELD & DODD, LLC
    Filed (acceptance time not in the bulk data set), ingested

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