Walthausen & Co., LLC: OSUR position timeline

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

Walthausen & Co., LLC held 0 OSUR shares at 2021-03-31 per its 13F-HR filed 2021-05-13.

the latest 13F is the newest step

period ended2021-03-31
13F 0 shares
Change vs previous 13F -27,380 shares
13F-HR 0001483339-21-000003 filed by Walthausen & Co., LLC
Filed 2021-05-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:39:37 UTC
Acceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
period ended2020-12-31
13F 27,380 shares
Change vs previous 13F not available
0.08% of the 13F portfolio, value $290,000.
13F-HR 0001483339-21-000002 filed by Walthausen & Co., LLC
Filed 2021-02-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:42:52 UTC
Acceptance time not in the bulk data set (spec §4.2).