UNITED STATES


SECURITIES AND EXCHANGE COMMISSION


Washington, D.C. 20549





FORM 10-Q/A


xQuarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.For the quarterly period ended December 31, 2011ORoTransition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.For the transition period from               to               .COMMISSION FILE NUMBER 000-52033





RED TRAIL ENERGY, LLC


(Exact name of registrant as specified in its charter)





North Dakota76-0742311(State or other jurisdiction ofincorporation or organization)(I.R.S. Employer Identification No.)3682 Highway 8 South, P.O. Box 11, Richardton, ND 58652(Address of principal executive offices)(701) 974-3308(Registrant's telephone number, including area code)





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.


x Yes o 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).


x Yes o 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:


Large Accelerated FileroAccelerated FileroNon-Accelerated FilerxSmaller Reporting Companyo





Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).


o Yes x No





Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date:





As of February 14, 2012, there were 40,213,973 Class A Membership Units outstanding.





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Explanatory Note Regarding Amendment No. 1





This Amendment No. 1 to the Quarterly Report on Form 10-Q of Red Trail Energy, LLC (the “Company”) for the fiscal quarter ended December 31, 2011, is being filed for the purpose of amending and correcting the number of outstanding units listed on the cover page of the report.  As of February 14, 2012, there were 40,213,973 Class A Membership Units outstanding.  The remainder of the Company's Form 10-Q is unchanged and is not reproduced in this Amendment No. 1.  This report speaks as of the original filing date of the Form 10-Q and has not been updated to reflect events occurring subsequent to the original reporting date.





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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 thereunto duly authorized.





RED TRAIL ENERGY, LLCDate:February 16, 2012/s/ Gerald BachmeierGerald BachmeierPresident and Chief Executive Officer(Principal Executive Officer)Date:February 16, 2012/s/ Kent AndersonKent AndersonChief Financial Officer(Principal Financial and Accounting Officer)