UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

For the quarterly period ended March 31, 2018

OR

For the transition period from                      to                      .

Commission File Number: 001-37833

Audentes Therapeutics, Inc.

(Exact name of registrant as specified in its charter)

600 California Street, 17th Floor

San Francisco, California 94108

(Address of principal executive offices and zip code)

(415) 818-1001  

(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  ☒    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 or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

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 Act).    Yes  ☐    No  ☒

As of May 7, 2018, there were 36,743,621 shares of the Registrant’s Common Stock, $0.00001 par value per share, outstanding.

EXPLANATORY NOTE

We are filing this Amendment No. 1 to Quarterly Report on Form 10-Q/A (this “Amendment”) to amend our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, as filed with the Securities and Exchange Commission (the “SEC”) on May 10, 2018 (the “10-Q”). This Amendment is being filed solely to refile the certifications of our principal executive officer and principal financial officer as exhibits to this Amendment as required pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities and Exchange Act of 1934 and pursuant to 18 U.S.C. Section 1350.

No attempt has been made in this Amendment to otherwise modify or update the other disclosures presented in the 10-Q. This Amendment does not reflect events occurring after the filing of the original 10-Q (i.e., those events occurring after May 10, 2018) or modify of update those disclosures that may be affected by subsequent events. Such subsequent matters are addressed in subsequent reports filed with the SEC. Accordingly, this Amendment should be read in conjunction with the 10-Q and our other filings with the SEC.

ITEM 6. EXHIBITS

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.