UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

—————————

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

—————————

Dated March 2, 2007

 

Commission File Number: 001-14666

 

MITTAL STEEL COMPANY N.V.

(Translation of registrant’s name into English)

 

15th Floor, Hofplein 20

3032 AC Rotterdam

The Netherlands

(Address of principal executive offices)

 

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

 

Form 20-F    x               Form 40-F  o

 

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): _____

 

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): _____

 

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   o               No   x 

 

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

 

 

 

 

---

On March 2, 2007, Mittal Steel Company N.V. issued a press release, attached hereto as Exhibit 99.1, announcing the conversion of 385,340,210 Arcelor Mittal Class B shares owned by Mittal Investments S.a.r.l. into 385,340,210 Arcelor Mittal Class A shares, incorporated herein by reference.

 

Exhibit List

 

 

 

 

 

---

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.

 

Date: March 2, 2007

 

	By:	/s/ Henk Scheffer
		Name:	Henk Scheffer
		Title:	Company Secretary

 

 

 

---

Exhibit Index