6-K

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

REPORT OF FOREIGN PRIVATE ISSUER

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For the month of May, 2009

Commission File Number 000-13355

ASM INTERNATIONAL N.V.

(Translation of registrant’s name into English)

VERSTERKERSTRAAT 8

1322 AP ALMERE

THE NETHERLANDS

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  x    Form 40-F  ¨

Indicate by check mark if the registrant is submitting the form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ¨

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ¨

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and had not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.    Yes  ¨    No  x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-                     .

Exhibits
Exhibit 99.1	ASM International announces appointment of Rob Ruijter as interim CFO

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 hereunto duly authorized.

Dated: May 5, 2009	ASM INTERNATIONAL N.V.
		/s/    ARNOLD J.M. VAN DER VEN
		Arnold J.M. van der Ven
		Managing Director and Chief Financial Officer

ASM INTERNATIONAL N.V.

(THE “REGISTRANT”)

(COMMISSION FILE NO. 0-13355)

EXHIBIT INDEX

TO

FORM 6-K

DATED May 5, 2009

Exhibit No.	Exhibit Description	Filed Herewith
99.1	ASM International announces appointment of Rob Ruijter as interim CFO	X

EX-99.1

EXHIBIT 99.1

                                                                                                                                                                                                        

ASM International N.V.

ASM INTERNATIONAL ANNOUNCES APPOINTMENT OF ROB RUIJTER AS INTERIM CFO

Almere, The Netherlands – May 4, 2009 — ASM International N.V. (NASDAQ: ASMI and Euronext Exchange in Amsterdam: ASM) announced today that it has appointed Rob Ruijter to the position of interim Chief Financial Officer as of 15 May 2009 following the departure of the incumbent CFO. Mr. Ruijter will work closely with Chuck del Prado, ASMI Chief Executive Officer, and other senior management team members, but he will not be a formal member of ASMI’s management board.

Mr. Ruijter, 58 and a Dutch national, recently retired as CFO of The Nielsen Company, the US-based global information and media group. He is a former CFO of international businesses including VNU, the media information and publishing group, and KLM, the Dutch national airline. He holds a non-executive board position at Wavin, and is nominated as such at Unit 4 Agresso.

Mr. Ruijter’s appointment as interim CFO is for the duration of the recruitment of a permanent CFO. ASMI expects to announce the proposed appointment of a permanent CFO before the end of the year.

About ASM International

ASM International N.V., headquartered in Almere, the Netherlands, and its subsidiaries design and manufacture equipment and materials used to produce semiconductor devices. The company provides production solutions for wafer processing (Front-end segment) as well as assembly and packaging (Back-end segment) through facilities in the United States, Europe, Japan and Asia. ASM International’s common stock trades on NASDAQ (symbol ASMI) and the Euronext Amsterdam Stock Exchange (symbol ASM). For more information, visit ASMI’s web site at www.asm.com.

Safe Harbor Statement under the U.S. Private Securities Litigation Reform Act of 1995: All matters discussed in this statement, except for any historical data, are forward-looking statements. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. These include, but are not limited to, economic conditions and trends in the semiconductor industry generally and the timing of the industry cycles specifically, currency fluctuations, the timing of significant orders, market acceptance of new products, competitive factors, litigation involving intellectual property, shareholder and other issues, commercial and economic disruption due to natural disasters, terrorist activity, armed conflict or political instability, epidemics and other risks indicated in the Company’s filings from time to time with the U.S. Securities and Exchange Commission, including, but not limited to, the Company’s reports on Form 20-F and Form 6-K. The Company assumes no obligation nor intends to update or revise any forward-looking statements to reflect future developments or circumstances.

For further information, please contact:

Investor contacts:

Erik Kamerbeek

Investor Relations

+31 88 100 8500

+31 (0)6 53 49 21 20

Erik.Kamerbeek@asm.com

Mary Jo Dieckhaus

Investor Relations

+1 212-986-290

MaryJo.Dieckhaus@asm.com

Media contacts:

Ian Bickerton

+31 (0)20 685 5955

+31 (0)6 25 01 85 12

ibickerton@huijskens.nl