UNITED STATES SECURITIES AND EXCHANGE COMMISSION


Washington, D.C. 20549


Form 10-Q/A


(Amendment No. 1)


(Mark One)þQUARTERLY REPORT PURSUANT TO SECTION 13OR 15(d) OF THE SECURITIES EXCHANGE ACTOF 1934


FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2017


OR ̈TRANSITION REPORT PURSUANT TOSECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934





For the transition period from _________ to _________ .


Commission File Number 1-6903





(Exact name of registrant as specified in its charter)


Delaware75-0225040(State or Other Jurisdiction of Incorporation or Organization)(I.R.S. Employer Identification No.)2525 N. Stemmons Freeway, Dallas, Texas75207-2401(Address of principal executive offices)(Zip Code)





(214) 631-4420


(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.  Yes þ  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 þ   No  ̈


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


Large accelerated filer þ Accelerated filer  ̈ Non-accelerated filer  ̈ (Do not check if a smaller reporting company)


Smaller reporting company  ̈ Emerging growth company   ̈





If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) 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 þ


At July 14, 2017 the number of shares of common stock outstanding was 151,335,584 .











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EXPLANATORY NOTE





Trinity Industries, Inc. is filing this Amendment No. 1 ("Amendment") to the Quarterly Report on Form 10-Q for the quarter ended June 30, 2017 which was originally filed with the Securities and Exchange Commission on July 26, 2017 ("the Quarterly Report"). This Amendment amends the certification of the Chief Financial Officer originally filed as Exhibit 32.2, which inadvertently omitted the electronic signature.





This Amendment should be read in conjunction with the Quarterly Report, which continues to speak as of the date of the Quarterly Report. Other than as set forth above, the Amendment does not modify or update disclosures in the Quarterly Report. Accordingly, this Amendment does not reflect events occurring after the filing of the Quarterly Report or modify or update any related or other disclosures.











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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.


TRINITY INDUSTRIES, INC.By/s/ James E. PerryRegistrantJames E. PerrySenior Vice President andChief Financial OfficerJuly 26, 2017