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Circumference Group LLC: AMPL position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Circumference Group LLC on AMPL, newest first. How the timeline and the estimate are built.

Circumference Group LLC held 238,000 AMPL 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 238,000 shares
    Change vs previous 13F 0 shares

    3.95% of the 13F portfolio, value $1,820,700.

    13F-HR 0001420506-26-001805 filed by Circumference Group 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 238,000 shares
    Change vs previous 13F 0 shares

    3.64% of the 13F portfolio, value $1,623,160.

    13F-HR 0001420506-26-001158 filed by Circumference Group 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 238,000 shares
    Change vs previous 13F +20,000 shares

    3.07% of the 13F portfolio, value $2,756,040.

    13F-HR 0001420506-26-000560 filed by Circumference Group 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 218,000 shares
    Change vs previous 13F 0 shares

    2.74% of the 13F portfolio, value $2,336,960.

    13F-HR 0001420506-25-003406 filed by Circumference Group 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 218,000 shares
    Change vs previous 13F +40,000 shares

    2.8% of the 13F portfolio, value $2,703,200.

    13F-HR 0001420506-25-002184 filed by Circumference Group 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 178,000 shares
    Change vs previous 13F 0 shares

    2.25% of the 13F portfolio, value $1,813,820.

    13F-HR 0001420506-25-001266 filed by Circumference Group 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 178,000 shares
    Change vs previous 13F 0 shares

    1.75% of the 13F portfolio, value $1,877,900.

    13F-HR 0001420506-25-000601 filed by Circumference Group 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 178,000 shares
    Change vs previous 13F not available

    1.67% of the 13F portfolio, value $1,596,660.

    13F-HR 0001420506-24-002546 filed by Circumference Group LLC
    Filed (acceptance time not in the bulk data set), ingested

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