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Disclosery

DF DENT & CO INC: RGEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DF DENT & CO INC on RGEN, newest first. How the timeline and the estimate are built.

DF DENT & CO INC held 356,854 RGEN 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 356,854 shares
    Change vs previous 13F -8,261 shares

    0.92% of the 13F portfolio, value $48,689,109.

    13F-HR 0000934999-26-000003 filed by DF DENT & CO 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 365,115 shares
    Change vs previous 13F -130,435 shares

    0.82% of the 13F portfolio, value $43,017,879.

    13F-HR 0000934999-26-000002 filed by DF DENT & CO 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 495,550 shares
    Change vs previous 13F -39,169 shares

    1.17% of the 13F portfolio, value $81,200,789.

    13F-HR 0000934999-26-000001 filed by DF DENT & CO 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 534,719 shares
    Change vs previous 13F -51,754 shares

    0.92% of the 13F portfolio, value $71,475,843.

    13F-HR 0000934999-25-000008 filed by DF DENT & CO 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 586,473 shares
    Change vs previous 13F +11,797 shares

    0.93% of the 13F portfolio, value $72,945,571.

    13F-HR 0000934999-25-000005 filed by DF DENT & CO 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 574,676 shares
    Change vs previous 13F +11,396 shares

    0.98% of the 13F portfolio, value $73,121,744.

    13F-HR 0000934999-25-000004 filed by DF DENT & CO 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 563,280 shares
    Change vs previous 13F -27,041 shares

    1.03% of the 13F portfolio, value $81,078,555.

    13F-HR 0000934999-25-000002 filed by DF DENT & CO 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 590,321 shares
    Change vs previous 13F not available

    1.07% of the 13F portfolio, value $87,851,594.

    13F-HR 0000934999-24-000013 filed by DF DENT & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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