X0306 4 2012-08-28 0 0001131457 ZIPCAR INC ZIP 0001094581 CASE STEPHEN M 1717 RHODE ISLAND AVENUE, N.W. 10TH FLOOR WASHINGTON DC 20036 1 0 1 0 Common Stock 2012-08-28 4 P 0 255311 7.75 A 1000000 I See Footnote Common Stock 6352175 I See Footnote Common Stock 250000 I See Footnote Common Stock 250000 I See Footnote Shares held directly by the Stephen M. Case Revocable Trust under agreement, dated December 17, 1998, as amended (the "Trust"). Mr. Case serves as the sole trustee of the Trust and has the sole power to direct the vote and disposition of the shares held by the Trust. Shares held directly by Revolution Living LLC ("RL"), an entity controlled by Mr. Case. Mr. Case is the Chairman, Chief Executive Officer and President of RL and has the sole power to direct the vote and disposition of the shares held by RL. Shares held directly by Revolution Living II LLC ("RL II"), a wholly-owned subsidiary of RL. Mr. Case is the Chairman, Chief Executive Officer and President of RL and RL II and has the sole power to direct the vote and disposition of the shares held by RL II. Shares held directly by Revolution Living III LLC ("RL III"), a wholly-owned subsidiary of RL. Mr. Case is the Chairman, Chief Executive Officer and President of RL and RL III and has the sole power to direct the vote and disposition of the shares held by RL III. /s/ SONG H. PAK, attorney-in-fact for Stephen M. Case 2012-08-30