SC 13G 1 dsc13g.txt KONA GRILL, INC. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.__________)* Kona Grill, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 50047H201 ------------------------------------ (CUSIP Number) December 31, 2005 -------------------------------------------------------------------------------- (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 remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. 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). Page 1 of 6 pages CUSIP No. 50047H201 13G Page 2 of 6 Pages ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. or 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) [ ] Not Applicable (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Wisconsin ------------------------------------------------------------------------------- 5 SOLE VOTING POWER 318,293 NUMBER OF ------------------------------------------------------------------ SHARES 6 SHARED VOTING POWER BENEFICIALLY OWNED BY None EACH ------------------------------------------------------------------ REPORTING 7 SOLE DISPOSITIVE POWER PERSON WITH 318,293 ------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER None ------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 318,293 ------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not Applicable [ ] ------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.6% ------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA ------------------------------------------------------------------------------- Item 1(a) Name of Issuer: Kona Grill, Inc. Item 1(b) Address of Issuer's Principal Executive Offices: 7150 East Camelback Road Suite 220 Scottsdale, AZ 85251 Item 2(a) Name of Person Filing: Cortina Asset Management, LLC ("Cortina") Item 2(b) Address of Principal Business Office: Cortina is located at: 330 East Kilbourn Avenue Suite 850 Milwaukee, WI 53202 Item 2(c) Citizenship: Cortina is a Wisconsin limited liability company Item 2(d) Title of Class of Securities: Common Stock Item 2(e) CUSIP Number: 50047H201 Item 3 Type of Person: (e) Cortina is an Investment Adviser registered under section 203 of the Investment Advisers Act of 1940 Page 3 of 6 pages Item 4 Ownership (at December 31, 2005): (a) Amount owned "beneficially" within the meaning of rule 13d-3: 318,293 (b) Percent of class: 5.6% (based on 5,676,810 shares outstanding as of November 7, 2005) (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 318,293 (ii) shared power to vote or to direct the vote: None (iii) sole power to dispose or to direct the disposition of: 318,293 (iv) shared power to dispose or to direct 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: Not Applicable Item 8 Identification and Classification of Members of the Group: Not Applicable Item 9 Notice of Dissolution of Group: Not Applicable Page 4 of 6 pages 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 of 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. Page 5 of 6 pages 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. Date: February 7, 2006 Cortina Asset Management, LLC By: /s/ Lori K. Hoch ----------------------------- Lori K. Hoch Chief Operating Officer and Chief Compliance Officer Page 6 of 6 pages