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JOHN G ULLMAN & ASSOCIATES INC: GLW position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of JOHN G ULLMAN & ASSOCIATES INC on GLW, newest first. How the timeline and the estimate are built.

JOHN G ULLMAN & ASSOCIATES INC held 233,865 GLW shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 233,865 shares
    Change vs previous 13F -85,877 shares

    7.25% of the 13F portfolio, value $59,736,074.

    13F-HR 0000919530-26-000003 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 319,742 shares
    Change vs previous 13F -63,789 shares

    5.76% of the 13F portfolio, value $43,475,368.

    13F-HR 0000919530-26-000002 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 383,531 shares
    Change vs previous 13F -25,638 shares

    4.48% of the 13F portfolio, value $33,581,941.

    13F-HR 0000919530-26-000001 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 409,169 shares
    Change vs previous 13F -151,070 shares

    4.52% of the 13F portfolio, value $33,564,099.

    13F-HR 0000919530-25-000006 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 560,239 shares
    Change vs previous 13F -5,693 shares

    4.37% of the 13F portfolio, value $29,462,989.

    13F-HR 0000919530-25-000003 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 565,932 shares
    Change vs previous 13F -54,975 shares

    4% of the 13F portfolio, value $25,908,347.

    13F-HR 0000919530-25-000002 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 620,907 shares
    Change vs previous 13F -48,970 shares

    4.34% of the 13F portfolio, value $29,505,524.

    13F-HR 0000919530-25-000001 filed by JOHN G ULLMAN & ASSOCIATES INC
    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 669,877 shares
    Change vs previous 13F not available

    4.35% of the 13F portfolio, value $30,244,969.

    13F-HR 0000919530-24-000004 filed by JOHN G ULLMAN & ASSOCIATES INC
    Filed (acceptance time not in the bulk data set), ingested

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