UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

(Mark One)

For the quarterly period ended September 30, 2015

For the transition period from                      to                     

Commission File Number: 001-37598

Multi Packaging Solutions International Limited

(Exact Name of Registrant as Specified in Its Charter)

(441) 295-5950

(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 Exchange Act of 1934 during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirement for the past 90 days. Yes    x     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 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 whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of “accelerated filer” and “large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

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

As of November 12, 2015, there were 77,439,432 common shares, $1.00 par value per share, outstanding.

Explanatory Note

Multi Packaging Solutions International Limited (the “Company” or “we”) is filing this Amendment No. 1 (the “Amendment”) to its Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2015, filed on November 13, 2015 (the “Original Filing”), to provide the interactive data files required by Item 601(b)(101) of Regulation S-K and Rule 405 of Regulation S-T.

No changes have been made to the Original Filing other than the inclusion of the interactive data files. This Amendment should be read in conjunction with the Original Filing. This Amendment speaks as of the date of the Original Filing, does not reflect events that may have occurred after the date of the Original Filing and does not modify or update in any way the disclosures made in the Original Filing.

ITEM 6.    Exhibits.

SIGNATURES

In accordance with 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.