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WESTERLY CAPITAL MANAGEMENT, LLC: ADTN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WESTERLY CAPITAL MANAGEMENT, LLC on ADTN, newest first. How the timeline and the estimate are built.

WESTERLY CAPITAL MANAGEMENT, LLC held 500,000 ADTN 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 500,000 shares
    Change vs previous 13F -300,000 shares

    1.28% of the 13F portfolio, value $6,950,000.

    13F-HR 0002073679-26-000089 filed by WESTERLY CAPITAL 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 800,000 shares
    Change vs previous 13F +100,000 shares

    3.1% of the 13F portfolio, value $10,064,000.

    13F-HR 0002073679-26-000057 filed by WESTERLY CAPITAL 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 700,000 shares
    Change vs previous 13F -220,220 shares

    1.83% of the 13F portfolio, value $6,083,000.

    13F-HR 0002073679-26-000027 filed by WESTERLY CAPITAL 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 920,220 shares
    Change vs previous 13F -54,780 shares

    2.74% of the 13F portfolio, value $8,631,664.

    13F-HR 0001546172-25-000011 filed by WESTERLY CAPITAL 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 975,000 shares
    Change vs previous 13F +140,000 shares

    3.71% of the 13F portfolio, value $8,745,750.

    13F-HR 0001546172-25-000007 filed by WESTERLY CAPITAL 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 835,000 shares
    Change vs previous 13F -95,000 shares

    3.49% of the 13F portfolio, value $7,281,200.

    13F-HR 0001546172-25-000005 filed by WESTERLY CAPITAL 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 930,000 shares
    Change vs previous 13F -390,000 shares

    3.58% of the 13F portfolio, value $7,746,900.

    13F-HR 0001546172-25-000003 filed by WESTERLY CAPITAL 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 1,320,000 shares
    Change vs previous 13F not available

    4.45% of the 13F portfolio, value $7,827,600.

    13F-HR 0001546172-24-000008 filed by WESTERLY CAPITAL MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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