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Disclosery

Prospect Hill Management, LLC: MA position timeline

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

Prospect Hill Management, LLC held 5,800 MA shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 5,800 shares
    Change vs previous 13F -500 shares

    1.16% of the 13F portfolio, value $2,978,880.

    13F-HR 0001837320-26-000003 filed by Prospect Hill 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 6,300 shares
    Change vs previous 13F -850 shares

    1.4% of the 13F portfolio, value $3,147,858.

    13F-HR 0001837320-26-000002 filed by Prospect Hill 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 7,150 shares
    Change vs previous 13F 0 shares

    1.65% of the 13F portfolio, value $4,081,792.

    13F-HR 0001837320-26-000001 filed by Prospect Hill 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 7,150 shares
    Change vs previous 13F 0 shares

    1.74% of the 13F portfolio, value $4,066,992.

    13F-HR 0001837320-25-000009 filed by Prospect Hill 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 7,150 shares
    Change vs previous 13F 0 shares

    2.07% of the 13F portfolio, value $4,017,871.

    13F-HR 0001837320-25-000008 filed by Prospect Hill 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 7,150 shares
    Change vs previous 13F 0 shares

    2.04% of the 13F portfolio, value $3,919,058.

    13F-HR 0001837320-25-000007 filed by Prospect Hill 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 7,150 shares
    Change vs previous 13F -250 shares

    1.66% of the 13F portfolio, value $3,764,976.

    13F-HR 0001837320-25-000001 filed by Prospect Hill 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 7,400 shares
    Change vs previous 13F not available

    1.83% of the 13F portfolio, value $3,654,120.

    13F-HR 0001837320-24-000004 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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