UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 1)

For the fiscal year ended December 31, 2012

OR

For the transition period from              to             

Commission file number: 000-26393

Mediabistro Inc.

(Exact name of Registrant as specified in its charter)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes £ No x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 15(d) of the Act. Yes ¨ No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2 of the Act). Yes £ No x

The aggregate market value of voting and non-voting common stock held by non-affiliates of the registrant as of June 30, 2012, based upon the last sale price of such common stock on that date as reported by the Nasdaq Capital Market was $12,120,475.

The number of shares of the outstanding registrant’s Common Stock as of March 11, 2013 was 6,023,175.

EXPLANATORY NOTE

We are filing this Amendment No. 1 on Form 10-K/A (the “Amendment”) to our Annual Report on Form 10-K for the fiscal year ended December 31, 2012, filed with the Securities and Exchange Commission on March 15, 2013 (the “Original Filing”), for the sole purpose of filing Exhibit 23.1 which was erroneously omitted from the Original Filing.

This amendment speaks as of the filing date of the Original Filing, does not reflect events occurring after the original filing date or modify or update those disclosures that may be affected by subsequent events, and no other changes are being made to any other disclosure contained in the Original Filing or any exhibits thereto.

PART IV

INDEX TO EXHIBITS

(a) Documents filed as part of this report.

(3) Exhibits

The following is a list of exhibits filed as part of this Report on Form 10-K/A. Where so indicated by footnote, exhibits, which were previously filed, are incorporated by reference.

SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.