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BERKSHIRE HATHAWAY INC. To the Shareholders of Berkshire Hathaway Inc.: Our gain in net worth during 2003 was $13.6 billion, which increased the per-share book value of both our Class A and Class B stock by 21%. Over the last 39 years (that is, since present management took It's per-share intrinsic value that counts, however, not book value. See more of Christy DeVinaspre - Berkshire Hathaway HomeServices Silverhawk Realty on Facebook. Corey Wrenn has an M.B.A. from the University of Nebraska at Omaha. Corey is the Vice President, Treasurer, and CCO for Pecaut & Company. Before he joined the firm in 1992, he worked for 9 years as an internal auditor for Berkshire Hathaway. Each year, for thirty years, two veteran investment advisors attended Berkshire Hathaway's Annual.