X0306 4 2015-02-25 0 0001348334 BARRACUDA NETWORKS INC CUDA 0001590386 Levow Zachary S C/O BARACUDA NETWORKS, INC. 3175 S. WINCHESTER BLVD. CAMPBELL CA 95008 1 0 0 0 Common Stock 2015-02-25 4 S 0 58945 37.97 D 2713535 D Common Stock 2015-02-25 4 S 0 1380 38.36 D 2712155 D Common Stock 2015-02-25 4 S 0 5213 37.97 D 243105 I By Trust Common Stock 2015-02-25 4 S 0 32 38.36 D 243073 I By Trust Common Stock 102470 I By Spouse The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2014. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.25 to $38.24, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, 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 footnotes (2) and (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.26 to $38.44, inclusive. The shares are held directly by the Levow Family 2010 Irrevocable Trust, dated June 29, 2010 for which the Reporting Person serves as a trustee. /s/ Diane Honda Attorney-in-Fact for Zachary S. Levow 2015-02-27