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Disclosery

FIRST MANHATTAN CO. LLC.: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of FIRST MANHATTAN CO. LLC. on CIEN, newest first. How the timeline and the estimate are built.

FIRST MANHATTAN CO. LLC. held 32,396 CIEN 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 32,396 shares
    Change vs previous 13F -1,423 shares

    0.04% of the 13F portfolio, value $15,892,182.

    13F-HR 0000728083-26-000007 filed by FIRST MANHATTAN CO. 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 33,819 shares
    Change vs previous 13F -12,322 shares

    0.04% of the 13F portfolio, value $13,129,550.

    13F-HR 0000728083-26-000005 filed by FIRST MANHATTAN CO. 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 46,141 shares
    Change vs previous 13F -1,200 shares

    0.03% of the 13F portfolio, value $10,790,996.

    13F-HR 0000728083-26-000002 filed by FIRST MANHATTAN CO. 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 47,341 shares
    Change vs previous 13F -5,531 shares

    0.02% of the 13F portfolio, value $6,896,163.

    13F-HR 0000728083-25-000015 filed by FIRST MANHATTAN CO. 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 52,872 shares
    Change vs previous 13F -6,955 shares

    0.01% of the 13F portfolio, value $4,300,080.

    13F-HR 0000728083-25-000010 filed by FIRST MANHATTAN CO. 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 59,827 shares
    Change vs previous 13F -24,217 shares

    0.01% of the 13F portfolio, value $3,615,346.

    13F-HR 0001750312-25-000007 filed by FIRST MANHATTAN CO. 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 84,044 shares
    Change vs previous 13F -900 shares

    0.02% of the 13F portfolio, value $7,127,772.

    13F-HR 0000728083-25-000003 filed by FIRST MANHATTAN CO. 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 84,944 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $5,231,701.

    13F-HR 0001172661-24-004939 filed by FIRST MANHATTAN CO. LLC.
    Filed (acceptance time not in the bulk data set), ingested

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