UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the registrant x Filed by a Party other than the registrant ¨

Check the appropriate box:

¨ Preliminary proxy statement

¨ Confidential, for use of the commission only (as permitted by Rule 14a-6(e)(2))

¨ Definitive proxy statement

x Definitive additional materials

¨ Soliciting material under Rule 14a-12

AUTODESK, INC.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

x No fee required.

¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1) Title of each class of securities to which transaction applies:

(2) Aggregate number of securities to which transaction applies:

(3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

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(5) Total fee paid:

¨ Fee paid previously with preliminary materials.

¨ Check box if any part of the fee is offset as provided by Exchange Act Rule 0- 11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.

(1) Amount Previously Paid:

(2) Form, Schedule or Registration Statement No.:

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(4) Date Filed:

Autodesk employees,

Last month we began mailing materials for the upcoming Autodesk annual stockholder meeting to be held on Tuesday, June 10, 2014. If you owned Autodesk shares (not options or unvested restricted stock units) on April 11, 2014, you should have received materials as part of the mailing.  Please note that you likely have received or will receive this information via email rather than regular mail.  The delivery method depends on how you previously elected to receive stockholder materials from Autodesk. 

If you hold your shares in an E*TRADE account, you should have received an email from them on May 1st with a link to the materials.  Those materials instruct you on how to submit your vote.

Additionally, a copy of the stockholder materials can also be viewed here: http://www.sec.gov/Archives/edgar/data/769397/000120677414001360/autodesk_def14a.htm

We encourage you to review this material and cast your vote to approve the proposals.  Regardless of whether you own shares or not, you may review Autodesk’s 2014 Annual Report here:

http://investors.autodesk.com/phoenix.zhtml?c=117861&p=irol-reportsAnnual

If you have any questions, please call the Autodesk Investor Line at 415-507-6705.

David Gennarelli