DF DENT & CO INC: HEI-A position timeline

DF DENT & CO INC held 699,176 HEI-A 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 699,176 shares

   Change vs previous 13F -77,842 shares

   3.42% of the 13F portfolio, value $180,324,569.

   13F-HR 0000934999-26-000003 filed by DF DENT & CO INC
   Filed 2026-08-14 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC

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

2. period ended2026-03-31

   13F 777,018 shares

   Change vs previous 13F -211,057 shares

   3.14% of the 13F portfolio, value $164,020,788.

   13F-HR 0000934999-26-000002 filed by DF DENT & CO INC
   Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC

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

3. period ended2025-12-31

   13F 988,075 shares

   Change vs previous 13F -135,771 shares

   3.59% of the 13F portfolio, value $249,419,786.

   13F-HR 0000934999-26-000001 filed by DF DENT & CO INC
   Filed 2026-02-17 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC

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

4. period ended2025-09-30

   13F 1,123,846 shares

   Change vs previous 13F -99,679 shares

   3.69% of the 13F portfolio, value $285,558,029.

   13F-HR 0000934999-25-000008 filed by DF DENT & CO INC
   Filed 2025-11-14 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC

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

5. period ended2025-06-30

   13F 1,223,525 shares

   Change vs previous 13F -13,041 shares

   4.02% of the 13F portfolio, value $316,587,060.

   13F-HR 0000934999-25-000005 filed by DF DENT & CO INC
   Filed 2025-08-14 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC

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

6. period ended2025-03-31

   13F 1,236,566 shares

   Change vs previous 13F +2,135 shares

   3.48% of the 13F portfolio, value $260,878,240.

   13F-HR 0000934999-25-000004 filed by DF DENT & CO INC
   Filed 2025-05-15 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC

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

7. period ended2024-12-31

   13F 1,234,431 shares

   Change vs previous 13F -69,873 shares

   2.91% of the 13F portfolio, value $229,702,929.

   13F-HR 0000934999-25-000002 filed by DF DENT & CO INC
   Filed 2025-02-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC

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

8. period ended2024-09-30

   13F 1,304,304 shares

   Change vs previous 13F not available

   3.23% of the 13F portfolio, value $265,764,946.

   13F-HR 0000934999-24-000013 filed by DF DENT & CO INC
   Filed 2024-11-15 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC

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