Skip to content
Insider tapeFilings through Fri, Oct 2

Michael J. O'sullivan

See Remarks at Berkshire Hathaway Inc (BRK-B)

Purchase track record

Not enough history. Based on 1 purchase with a full 90 days of price history.

—
Avg. 90-day return+10.1%
vs. S&P 500+4.7%
Beat the market100%
Paper profit on buys+$16K
Total bought / sold$501K / $0

Reported trades

Filed Stock Type Shares Price Value Since
Aug 13SEC BRK-BBerkshire Hathaway Inc Buy 45 $510.64 $23K -1.2%
Aug 13SEC BRK-BBerkshire Hathaway Inc Buy 400 $512.52 $205K -1.6%
Aug 13SEC BRK-BBerkshire Hathaway Inc Buy 43 $513.61 $22K -1.8%
May 6SEC BRK-BBerkshire Hathaway Inc Buy 483 $467.13 $226K +7.9%
May 6SEC BRK-BBerkshire Hathaway Inc Buy 53 $470.22 $25K +7.2%
  • Buy

    See Remarks Michael J. O'sullivan bought $205K of BRK-B at $512.52 — raises the stake by 56%.

  • Buy

    See Remarks Michael J. O'sullivan bought $226K of BRK-B at $467.13 — first open-market purchase in our records; raises the stake by 380%.