X0303 4 2010-03-16 0 0001227930 ENTROPIC COMMUNICATIONS INC ENTR 0001416998 Henry Patrick C 6290 SEQUENCE DRIVE SAN DIEGO CA 92121 1 1 0 0 CEO & Chairman of the Board Common Stock 2010-03-16 4 S 0 15000 4.6194 D 1129788 I by Trust Common Stock 10000 D Common Stock 160000 I '09 GRAT PH Common Stock 160000 I '09 GRAT WH The sales reported in the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2009. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.57 to $4.78, per share. The reporting person undertakes to provide to Entropic Communications (the "Company"), any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. By Patrick C. Henry and Wendy A. Henry Family Trust The shares are held by the Patrick C. Henry and Wendy A. Henry, Trustees of the Patrick C. Henry 2009 Annuity Trust, dated March 26, 2009, of which the Reporting Person holds a pecuniary interest in the annuity provided for in the trust agreement. The shares are held by the Patrick C. Henry and Wendy A. Henry, Trustees of the Wendy A. Henry 2009 Annuity Trust, dated March 26, 2009, of which the Reporting Person holds a pecuniary interest in the annuity provided for in the trust agreement. By: Lance W. Bridges, as attorney-in-fact For: Patrick C. Henry 2010-03-17