Walthausen & Co., LLC: PUMP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Walthausen & Co., LLC on PUMP, newest first. How the timeline and the estimate are built.

Walthausen & Co., LLC held 138,450 PUMP shares at 2022-09-30 per its 13F-HR/A filed 2022-11-14.

the latest 13F is the newest step

period ended2022-09-30
13F/A 138,450 shares
Change vs previous 13F -81,590 shares
0.93% of the 13F portfolio, value $1,115,000.
13F-HR/A 0001483339-22-000006 filed by Walthausen & Co., LLC
Filed 2022-11-14 (acceptance time not in the bulk data set), ingested 2026-10-07 18:34:10 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2022-06-30
13F 220,040 shares
Change vs previous 13F -32,250 shares
0.99% of the 13F portfolio, value $2,200,000.
13F-HR 0001483339-22-000004 filed by Walthausen & Co., LLC
Filed 2022-08-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:35:03 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2022-03-31
13F 252,290 shares
Change vs previous 13F -43,630 shares
0.99% of the 13F portfolio, value $3,514,000.
13F-HR 0001483339-22-000003 filed by Walthausen & Co., LLC
Filed 2022-05-11 (acceptance time not in the bulk data set), ingested 2026-10-07 18:35:57 UTC
Acceptance time not in the bulk data set (spec §4.2).
period ended2021-12-31
13F 295,920 shares
Change vs previous 13F not available
0.63% of the 13F portfolio, value $2,397,000.
13F-HR 0001483339-22-000002 filed by Walthausen & Co., LLC
Filed 2022-02-11 (acceptance time not in the bulk data set), ingested 2026-10-07 18:36:54 UTC
Acceptance time not in the bulk data set (spec §4.2).