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GRANDFIELD & DODD, LLC: MRK position timeline

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

GRANDFIELD & DODD, LLC held 171,554 MRK 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 171,554 shares
    Change vs previous 13F -4,221 shares

    1.16% of the 13F portfolio, value $22,044,797.

    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 175,775 shares
    Change vs previous 13F +7,714 shares

    1.19% of the 13F portfolio, value $21,144,076.

    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 168,061 shares
    Change vs previous 13F -16,228 shares

    1% of the 13F portfolio, value $17,690,189.

    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 184,289 shares
    Change vs previous 13F -8,679 shares

    0.88% of the 13F portfolio, value $15,467,388.

    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 192,968 shares
    Change vs previous 13F -35,972 shares

    0.89% of the 13F portfolio, value $15,275,393.

    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 228,940 shares
    Change vs previous 13F -39,396 shares

    1.27% of the 13F portfolio, value $20,549,656.

    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 268,336 shares
    Change vs previous 13F -16,716 shares

    1.65% of the 13F portfolio, value $26,694,122.

    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 285,052 shares
    Change vs previous 13F not available

    1.92% of the 13F portfolio, value $32,370,525.

    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).