UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) KONA GRILL INC. ------------------------------------------------------ (Name of Issuer) Common Stock ------------------------------------------------------ (Title of Class of Securities) 50047H201 ------------------------------------------------------ (CUSIP Number) December 31, 2006 ------------------------------------------------------ (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 50047H201 --------------------------------------------------------------------- 1. NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Cortina Asset Management, LLC 56-2450074 --------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [ ] (b) [ ] --------------------------------------------------------------------- 3. SEC USE ONLY --------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Wisconsin --------------------------------------------------------------------- 5. SOLE VOTING POWER: 198,778 NUMBER OF ------------------------------------------------------ SHARES 6. SHARED VOTING POWER: None BENEFICIALLY OWNED BY ------------------------------------------------------ EACH 7. SOLE DISPOSITIVE POWER: 364,468 REPORTING PERSON WITH ------------------------------------------------------ 8. SHARED DISPOSITIVE POWER: None --------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 198,778 --------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES [ ] --------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.26% --------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON IA --------------------------------------------------------------------- Item 1(a) NAME OF ISSUER Kona Grill Inc. (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES 7150 E. Camelback Road, Suite 220, Scottsdale, AZ 85251 Item 2(a) NAME OF PERSONS FILING Cortina Asset Management, LLC (b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE 330 East Kilbourn Avenue, Suite 850, Milwaukee, Wisconsin 53202 (c) CITIZENSHIP Cortina is a Wisconsin limited liability company (d) TITLE OF CLASS OF SECURITIES Common Stock (e) CUSIP NUMBER 50047H201 Item 3. Type of Person: (e) [X] Cortina is an Investment Adviser registered under section 203 of the Investment Advisors Act of 1940 Item 4. OWNERSHIP Ownership (as December 31, 2006): (a) Amount owned ?beneficially? within the meaning of rule 13d-3: 364,468 (b) Percent of class: 6.26% (based on 5,822,194 shares outstanding as of November 1, 2006.) (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote 198,778 (ii) Shared power to vote or direct the vote None (iii) Sole power to dispose or to direct the disposition of 364,468 (iv) Shared power to dispose or to direct the disposition of None Item 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS Not Applicable Item 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON Not Applicable Item 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON Not Applicable Item 8. IDENTIFICATION AND CLASSIFICAITON OF MEMBERS OF THE GROUP Not Applicable Item 9. NOTICE OF DISSOLUTION OF GROUP Not Applicable Item 10. CERTIFICATION By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 14, 2007 ------------------------------------- Date /s/LORI K. HOCH ------------------------------------- Signature Lori K. Hoch Chief Operating Officer and Chief Compliance Officer ------------------------------------- Name/Title