Buffett Letters
Specialty ChemicalsAcquired 2011

Lubrizol

Berkshire acquired Lubrizol 鈥?a specialty chemicals company focused on engine additives and industrial lubricants 鈥?for $9 billion in 2011. The acquisition involved a controversy regarding a Berkshire board member's pre-announcement stock purchase (the Sokol affair), which Buffett addressed directly and thoroughly in the 2010 letter.