UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington , D.C. 20549

FORM 10-Q/A

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended: June 30, 2016

OR

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from:________to________

Commission File Number: 0-30746

FRONTIER OILFIELD SERVICES, INC.

(Exact name of registrant as specified in its charter)

(972) 234-2610 

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

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    ☐  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, 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    ☒  No

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 the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

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

As of August 15, 2016 there were 11,855,276 shares of common stock, par value $0.01 per share, outstanding.

EXPLANATORY NOTE 

The sole purpose of this Amendment 1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2016, originally filed with the Securities and Exchange Commission on August 15, 2016, is to furnish Exhibit 101 to the Form 10-Q, which contains the XBRL (eXtensible Business Reporting Language) Interactive Data File for the consolidated financial statements and notes included in Part I, Item I of the Form 10-Q.

No other changes have been made to the Form 10-Q, and the Form 10-Q has not been updated to reflect events occurring subsequent to the original filing date.

31.1 Certification of Chief Executive Officer and Chief Accounting Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1 Certification of Chief Executive Officer/Chief Accounting Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101 101.INS XBRL Instance Document

101.SCH XBRL Taxonomy Schema

101.CAL XBRL Taxonomy Calculation Linkbase

101.LAB XBRL Taxonomy Label Linkbase

101.PRE XBRL Taxonomy Presentation Linkbase

101.DEF XBRL Taxonomy Definition Linkbase

SIGNATURES

In accordance with Section 13 or 15(d) of the Exchange Act, the registrant has caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on August 15, 2016.

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