|   |
|---|
|   |  |
| o | Registration Statement pursuant to Section 12(b) or (g) of the Securities Exchange Act of 1934. |

|   |
|---|
|   |  |
| x | Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. |

|   |
|---|
|   |  |
| o | Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. |

|   |
|---|
|   |  |
| o | Shell company report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. |

|                                            |
|--------------------------------------------|
|                                            |  |  |
| Title of each class                        |   | Name of each exchange on which registered |
| Common Shares, par value € 0.04 |   | The NASDAQ Stock Market LLC |

|                                      |
|--------------------------------------|
|                                      |  |  |  |  |
| Large accelerated filer  x |   | Accelerated filer  o |   | Non-accelerated filer  o |

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|               |
|---------------|
|               |  |  |  |
| ExhibitNumber | Description | Incorporated by Reference to: | IncludedHerein: |
| 1.1           | English Informal Translation of ASM International NV’s Articles of Association, as amended | Exhibit 1.1 to the Registrants Form 20-F filed on April 9, 2014 |   |
| 4.1           | 2001 Stock Option Plan | Exhibit 99.1 to the Registrant’s Form S-8 filed on April 30, 2002 |   |
| 4.2           | Overview of Remuneration of Members of the Management Board, dated May 20, 2010 | Exhibit 4.6 to the Registrant's Form 20-F filed on April 4, 2013 |   |
| 4.3           | Overview of Remuneration of Mr Peter van Bommel | Exhibit 4.7 to the Registrant’sForm 20-F filed on March 25, 2011 |   |
| 4.4           | Form of Supervisory Board Member Indemnification Agreement | Exhibit 10.1 to the Registrant’sForm 20-F filed on March 16, 2007 |   |
| 4.5           | Form of Management Board Member Indemnification Agreement | Exhibit 10.2 to the Registrant’sForm 20-F filed on March 16, 2007 |   |
| 4.6           | Amended and Restated Settlement Agreement dated as of December 16, 1998 by and among ASM International NV, ASM America, Inc. and Applied Materials, Inc. -2- | Exhibit 10.3 to the Registrant’sForm 20-F filed on March 16, 2007 |   |
| 4.7           | Summary of the material elements of employment contract with Mr C.D. del Prado (effective as of March 1, 2008) | Exhibit 99.9 to the Registrant’s Form 6-K filed on May 20, 2008 |   |
| 4.8           | ASM International NV 2011 Stock Option Plan for Members of the Management Board | Exhibit 4.14 to the Registrant's Form 20-F filed on March 28, 2012 |   |
| 8.1           | Subsidiaries | Exhibit 8.1 to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 12.1          | Certification of CEO pursuant to Rule 13a-14(a) |   | X |
| 12.2          | Certification of CFO pursuant to Rule 13a-14(a) |   | X |
| 13.1          | Certification of CEO and CFO pursuant to Rule 13a-14(b) and 18 U.S.C. 1350 |   | X |
| 15.1          | Consent of Independent Registered Public Accounting Firm | Exhibit 101.INS to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 15.2          | Annual Audited Financial Statements of ASM Pacific Technology Ltd as of and for the fiscal year ended December 31, 2014 |   | X |
| 15.3          | Consent of Deloitte Touche Tohmatsu, independent auditors of ASM Pacific Technology Ltd* |   | X |
| 101.INS       | XBRL Instance Document* | Exhibit 101.INS to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 101.SCH       | XBRL Taxonomy Extension Schema Document* | Exhibit 101.SCH to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 101.CAL       | XBRL Taxonomy Extension Calculation Linkbase Document* | Exhibit 101.CAL to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 101.DEF       | XBRL Taxonomy Extension Definition Linkbase Document* | Exhibit 101.DEF to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 101.LAB       | XBRL Taxonomy Extension Label Linkbase Document* | Exhibit 101.LAB to the Registrant’s Form 20-F filed on April 9, 2015 |   |
| 101.PRE       | XBRL Taxonomy Extension Presentation Linkbase Document* | Exhibit 101.PRE to the Registrant’s Form 20-F filed on April 9, 2015 |   |

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|        |
|--------|
|        |  |  |
|   |   | ASM INTERNATIONAL NV |
|   |   |   |
| Date:  | June 30, 2015 | /S/ CHARLES D. DEL PRADO |
|   |   | Charles D. del Prado |
|   |   | Chief Executive Officer |