Oppenheimer & Close, LLC: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Oppenheimer & Close, LLC on BRK-B, newest first. How the timeline and the estimate are built.

Oppenheimer & Close, LLC held 11,149 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

period ended2026-06-30
13F 11,149 shares
Change vs previous 13F +145 shares
3.52% of the 13F portfolio, value $5,578,848.
13F-HR 0001062993-26-004206 filed by Oppenheimer & Close, LLC
Filed 2026-08-12 (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).
period ended2026-03-31
13F 11,004 shares
Change vs previous 13F not available
3.32% of the 13F portfolio, value $5,273,117.
13F-HR 0001062993-26-002521 filed by Oppenheimer & Close, LLC
Filed 2026-05-12 (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).