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NEEDHAM INVESTMENT MANAGEMENT LLC: ADTN position timeline

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

NEEDHAM INVESTMENT MANAGEMENT LLC held 450,000 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 450,000 shares
    Change vs previous 13F -778,500 shares

    0.19% of the 13F portfolio, value $6,255,000.

    13F-HR 0000919574-26-005153 filed by NEEDHAM INVESTMENT 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 1,228,500 shares
    Change vs previous 13F -219,000 shares

    0.79% of the 13F portfolio, value $15,454,531.

    13F-HR 0000919574-26-003133 filed by NEEDHAM INVESTMENT 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 1,447,500 shares
    Change vs previous 13F +272,500 shares

    0.79% of the 13F portfolio, value $12,578,775.

    13F-HR 0000919574-26-000997 filed by NEEDHAM INVESTMENT 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 1,175,000 shares
    Change vs previous 13F +55,000 shares

    0.77% of the 13F portfolio, value $11,021,500.

    13F-HR 0000919574-25-006767 filed by NEEDHAM INVESTMENT 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 1,120,000 shares
    Change vs previous 13F 0 shares

    0.8% of the 13F portfolio, value $10,046,400.

    13F-HR 0000919574-25-004664 filed by NEEDHAM INVESTMENT 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 1,120,000 shares
    Change vs previous 13F -125,000 shares

    0.92% of the 13F portfolio, value $9,766,400.

    13F-HR 0000919574-25-003041 filed by NEEDHAM INVESTMENT 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 1,245,000 shares
    Change vs previous 13F -90,000 shares

    0.8% of the 13F portfolio, value $10,370,850.

    13F-HR 0000919574-25-001161 filed by NEEDHAM INVESTMENT 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 1,335,000 shares
    Change vs previous 13F not available

    0.61% of the 13F portfolio, value $7,916,550.

    13F-HR 0000919574-24-006457 filed by NEEDHAM INVESTMENT MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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