X0304 4 2011-09-09 0 0000859598 SEACOR HOLDINGS INC /NEW/ CKH 0001253163 LORENTZEN OIVIND C/O SEACOR HOLDINGS INC. 2200 ELLER DRIVE FT. LAUDERDALE FL 33316 1 1 0 0 Chief Executive Officer Common Stock 2011-09-09 4 P 0 1630 86.00 A 75380 D Common Stock 2011-09-09 4 P 0 2000 86.1282 A 77380 D Common Stock 2011-09-09 4 P 0 10000 86.1282 A 87380 I See Footnote Common Stock 2011-09-12 4 P 0 12370 84.40 A 99750 D The price reported in Column 4 is a weighted average price. The Common Shares were sold in separate transactions on the same day at prices ranging from $85.70 to $86.50 per share. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this Footnote. The shares being reported here were purchased in trust for Reporting Person's five children, Luke Byrd Hack Lorentzen, Lily Hack Lorentzen, Claire Warwick Hack Lorentzen, Thea Hack Lorentzen, and Oivind H. Hack Lorentzen. The price reported in Column 4 is a weighted average price. The Common Shares were sold in separate transactions on the same day at prices ranging from $84.00 to $85.00 per share. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Common Shares sold at each separate price within the range set forth in this Footnote. Paul L. Robinson, Attorney-in-Fact 2011-09-13