X0306 4 2015-04-17 0 0001348334 BARRACUDA NETWORKS INC CUDA 0001590405 Perone Michael D C/O BARRACUDA NETWORKS, INC. 3175 S. WINCHESTER BLVD. CAMPBELL CA 95008 1 1 1 0 Chief Marketing Officer & EVP Common Stock 2015-04-17 4 S 0 1680 43.38 D 5025362 D Common Stock 2015-04-20 4 S 0 1680 43.72 D 5023682 D Common Stock 2015-04-21 4 S 0 3360 44.77 D 5020322 D Common Stock 2015-04-17 4 S 0 300 43.38 D 187667 I By Trust Common Stock 2015-04-20 4 S 0 300 43.72 D 187367 I By Trust Common Stock 2015-04-21 4 S 0 600 44.77 D 186767 I By Trust Common Stock 2015-04-17 4 S 0 180 43.38 D 597347 I By Trust Common Stock 2015-04-20 4 S 0 180 43.72 D 597167 I By Trust Common Stock 2015-04-21 4 S 0 360 44.77 D 596807 I By Trust Common Stock 2015-04-17 4 S 0 375 43.38 D 1223459 I By LLC Common Stock 2015-04-20 4 S 0 375 43.72 D 1223084 I By LLC Common Stock 2015-04-21 4 S 0 750 44.77 D 1222334 I By LLC Common Stock 462744 I By Spouse Common Stock 262179 I By Trust Common Stock 262179 I By Trust Common Stock 128523 I By Trust The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on February 7, 2014 by the Reporting Person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.312 to $43.54, 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), (3) and (4) 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 $43.20 to $43.90, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.56 to $45.08, inclusive. The shares are held directly by the Perone Family 2010 Irrevocable Trust dated June 29, 2010 for which the Reporting Person serves as a trustee. The shares are held directly by the Perone 2012 Irrevocable Trust for which the Reporting Person serves as a trustee. The shares are held directly Consulting2 LLC for which the Reporting Person serves as the managing member. The shares are held directly by the 2010 Four Year Plan 3 Trust for which the Reporting Person serves as a trustee. The shares are held directly by the 2010 Four Year Plan 9 Trust for which the Reporting Person serves as a trustee. The shares are held directly by the Perone Family 2010 Irrevocable Trust - Exempt dated June 29, 2010 for which the Reporting Person serves as a trustee. /s/ Diane Honda Attorney-in-Fact for Michael D. Perone 2015-04-21