X0306 4 2013-05-01 0 0001129260 VOCERA COMMUNICATIONS, INC. VCRA 0001544336 LANG BRENT D. C/O VOCERA COMMUNICATIONS, INC. 525 RACE STREET SAN JOSE CA 95126 0 1 0 0 President & COO Common Stock 2013-05-01 4 S 0 2000 19.6898 D 52342 I By Lang Van Schaack Family Revocable Trust Common Stock 23646 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 27, 2012. Represents the aggregate of sales effected on the same day at different prices. Represents the weighted average sales price per share. The shares sold at prices ranging from $19.54 to $19.86 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. /s/ Brent D. Lang by Jay Spitzen, Attorney-in-Fact 2013-05-03