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): February 24, 2011

GigOptix, Inc.

(Exact name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (650) 424-1937

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:

The following information is intended to be furnished under Item 2.02 of Form 8-K, “Results of Operations and Financial Condition.” This information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On February 24, 2011, GigOptix, Inc. (the “Company”) issued a press release announcing its financial results for the three months ended and year ended December 31, 2010. The full text of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference.

On February 24, 2011, an updated PowerPoint presentation has been posted on GigOptix’s website to include updated financial numbers to the original PowerPoint presentation posted on February 7, 2011 that detailed the rationale, motivation and prospects of the merger of GigOptix and Endwave. A copy of the updated PowerPoint presentation is filed as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference.

(d) Exhibits.

Important Additional Information

This communication shall not constitute an offer of any securities for sale. In connection with the proposed merger of GigOptix and Endwave, GigOptix will file with the Securities and Exchange Commission a Registration Statement on Form S-4 that will include a proxy statement of Endwave and a prospectus of GigOptix. The definitive proxy statement/prospectus will be mailed to stockholders of Endwave. GigOptix and Endwave urge investors and security holders to read the proxy statement/prospectus regarding the proposed transaction when it becomes available because it will contain important information about the proposed transaction. You may obtain a free copy of the proxy statement/prospectus (when available) and other related documents filed by GigOptix and Endwave with the SEC at the SEC’s web site at www.sec.gov. The proxy statement/prospectus (when it is available) and other documents filed by GigOptix or Endwave with the SEC relating to the proposed transaction may also be obtained for free by accessing GigOptix’s web site at www.gigoptix.com by clicking on the link for “Investor”, then clicking on the link for “SEC Filings”, or by accessing Endwave’s web site at www.endwave.com and clicking on the “Company” link and then clicking on the link for “SEC Filings” underneath the heading “Investor Relations”.

Participants in the Merger

GigOptix, Endwave and their respective directors, executive officers and certain other members of management and employees may be deemed to be participants in the solicitation of proxies from Endwave stockholders in connection with the proposed transaction. Information regarding the persons who may, under the rules of the SEC, be considered participants in the solicitation of Endwave stockholders in connection with the proposed transaction, including the interests of such participants in the proposed transaction, will be set forth in the proxy statement/prospectus when it is filed with the SEC. You can find information about GigOptix’s executive officers and directors in GigOptix’s definitive proxy statement filed with the SEC on October 28, 2010. You can find information about Endwave’s executive officers and directors in Endwave’s definitive proxy statement filed with the SEC on June 11, 2010. You can obtain free copies of these documents from the sources indicated above. You may obtain additional information regarding the direct and indirect interests of GigOptix, Endwave and their respective executive officers and directors in the merger by reading the proxy statement/prospectus regarding the merger when it becomes available.

Signature

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 thereunder duly authorized.

Date: February 24, 2011