UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 21, 2011

Nara Bancorp, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (213) 639-1700

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Item 5.07. Submission of Matters to a Vote of Security Holders

Nara Bancorp’s (the “Company’s”) annual meeting of stockholders was held on September 21, 2011, at which time shareholders voted on the following items:

Proxies were solicited by the Company’s management pursuant to Section14 of the Securities Exchange Act of 1934, as amended.

A total of 33,153,267 shares were represented and eligible to vote at the meeting, constituting approximately 87% of the 38,097,910 issued and outstanding shares entitled to vote at the meeting.

The Merger Agreement was adopted and approved, with the number of votes cast as follows:

The number of shares voting “for” constituted approximately 74% of the total number of shares of outstanding common stock. There were approximately 4,924,642 broker non-votes received with respect to this item.

The vote on the election of directors was as follows:

There were approximately 4,924,642 broker non-votes received with respect to this item.

The resolution approving the amendment and restatement of Section IV, of the Company’s Certificate of Incorporation to increase the number of authorized shares of common stock, $0.001 par value per share, to one hundred fifty million (150,000,000) shares of common stock was approved by a majority of our outstanding shares of common stock, with the number of shares cast as follows:

The number of shares voting “for” constituted approximately 68% of the total number of shares of outstanding common stock. There were no broker non-votes received with respect to this item.

The appointment of Crowe Horwath LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2011 was ratified, with the number of shares cast as follows:

The number of shares voting “for” constituted approximately 86.7% of the total number of shares represented and voting at the meeting. There were no broker non-votes received with respect to this item.

The resolution approving, on an advisory and non-binding basis, the compensation paid to the Company’s Named Executive Officers set forth in the Summary Compensation Table of the Company’ Proxy Statement dated August 4, 2011 was approved, with the number of shares cast as follows:

The number of shares voting “for” constituted approximately 70% of the total number of shares represented and voting at the meeting. There were no broker non-votes received with respect to this item.

The adjournment of the meeting if necessary or appropriate in the judgment of our board of directors to solicit additional proxies or votes in favor of the above proposals that are to be presented at the meeting was approved, with the number of shares cast as follows:

The number of shares voting “for” constituted approximately 82.7% of the total number of shares represented and voting at the meeting. There were no broker non-votes received with respect to this item.

Item 8.01 Other Events.

On September 21, 2011 Nara Bancorp, Inc. and Center Financial Corporation issued a joint press release to announce the receipt of shareholder approval for the planned merger of the two companies.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.