MATTERN CAPITAL MANAGEMENT, LLC: IGSB position timeline

MATTERN CAPITAL MANAGEMENT, LLC held 0 IGSB shares at 2026-03-31 per its 13F-HR filed 2026-05-04.

the latest 13F is the newest step

1. period ended2026-03-31

   13F 0 shares

   Change vs previous 13F -28,945 shares

   13F-HR 0001725547-26-000166 filed by MATTERN CAPITAL MANAGEMENT, LLC
   Filed 2026-05-04 (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).

   Exited: the 13F for this period no longer lists the position.

2. period ended2025-12-31

   13F 28,945 shares

   Change vs previous 13F +2,414 shares

   0.18% of the 13F portfolio, value $1,530,612.

   13F-HR 0001725547-26-000059 filed by MATTERN CAPITAL MANAGEMENT, LLC
   Filed 2026-01-29 (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).

3. period ended2025-09-30

   13F 26,531 shares

   Change vs previous 13F +10,490 shares

   0.17% of the 13F portfolio, value $1,406,939.

   13F-HR 0001725547-25-004185 filed by MATTERN CAPITAL MANAGEMENT, LLC
   Filed 2025-10-21 (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).

4. period ended2025-06-30

   13F 16,041 shares

   Change vs previous 13F +6,514 shares

   0.1% of the 13F portfolio, value $846,323.

   13F-HR 0001725547-25-003493 filed by MATTERN CAPITAL MANAGEMENT, LLC
   Filed 2025-07-21 (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).

5. period ended2025-03-31

   13F 9,527 shares

   Change vs previous 13F not available

   0.06% of the 13F portfolio, value $498,929.

   13F-HR 0001725547-25-001447 filed by MATTERN CAPITAL MANAGEMENT, LLC
   Filed 2025-04-23 (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).