UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(RULE 14a-101)

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 o

Check the appropriate box:

o  Preliminary Proxy Statement

o  Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o  Definitive Proxy Statement

x  Definitive Additional Materials

o  Soliciting Material Pursuant to §240.14a-12

The Navigators Group, 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.

o   Fee computed on table below per Exchange Act Rules 14a-6(i)(4) 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):

(4)   Proposed maximum aggregate value of transaction:

(5)   Total fee paid:

o   Fee paid previously with preliminary materials.

o   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:

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 26, 2010 THE NAVIGATORS GROUP, INC. Meeting Information Meeting Type: Annual Meeting For holders as of: April 01, 2010 Date: May 26, 2010 Time: 10:00 AM EDT Location: Office of the Company Reckson Executive Park 6 International Drive Nye Brook, NY 10573 BROKE LOGO HERE Return Address Line 1 Return Address Line 2 Return Address Line 3 51 MERCEDES WAY EDGEWOOD NY 11717 Investor Address Line 1 Investor Address Line 2 Investor Address Line 3 Investor Address Line 4 Investor Address Line 5 John Sample

1234 ANYWHERE STREET ANY CITY, ON A1A 1A1 You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. BARCODE See the reverse side of this notice to obtain proxy materials and voting instructions. Broadridge Internal Use Only Job # Envelope # Sequence # # of # Sequence #

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: 1. Annual Report 2. Notice & Proxy Statement How to View Online: Have the 12-Digit Control Number available (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the 12-Digit Control Number (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor.. Please To facilitate make timely the request delivery as instructed please make above the request on or before as instructed May 12, 2010 above to on facilitate or before timely delivery. How To Vote Please Choose One of the Following Voting Methods Vote In Person: If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.proxyvote.com or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the 12-Digit Control Number available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form. Internal Use Only 00000632882 R2.09.05.010

Voting items The Board of Directors recommends that you vote FOR the following: 1. Election of Directors Nominees 01 H.J. Mervyn Blakeney 02 Peter A. Cheney 03 Terence N. Deeks 04 W. Thomas Forrester 05 Stanley A. Galanski 06 John F. Kirby 07 Marjorie D. Raines 08 Marc M. Tract The Board of Directors recommends you vote FOR the following proposal(s): 2 Approval of The Navigators Group, Inc. Amended and Restated 2005 Stock Incentive Plan. 3 Ratification of the appointment of KPMG LLP as the Company’s Independent registered public accounting firm for 2010. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 0000 0000 0000 BARCODE Broadridge Internal Use Only xxxxxxxxxx xxxxxxxxxx Cusip Job # Envelope # Sequence # # of # Sequence # 00000632883 R2.09.05.010

Reserved for Broadridge Internal Control Information Voting Instructions THIS SPACE RESERVED FOR LANGUAGE PERTAINING TO BANKS AND BROKERS AS REQUIRED BY THE NEW YORK STOCK EXCHANGE THIS SPACE RESERVED FOR SIGNATURES IF APPLICABLE Broadridge Internal Use Only P99999-010 12 Job # Envelope # Sequence 15 # # of # Sequence # OF## 00000632884 R2.09.05.010