UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 8, 2013

Chicago Bridge & Iron Company N.V.

(Exact name of registrant as specified in its charter)

The Netherlands

(State or other jurisdiction of incorporation)

Registrant’s telephone number, including area code: 31-70-3732010

N.A.

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following (See General Instruction A.2 below):

Item 5.07. Submission of Matters to a Vote of Security Holders.

The following matters were voted upon and adopted at the 2013 Annual Meeting of Shareholders of Chicago Bridge & Iron Company N.V. (the “Company”) held on May 8, 2013:

1. Election of Deborah M. Fretz as a member of the Supervisory Board to serve until the Annual General Meeting of Shareholders in 2016 and until her successor has been duly appointed.

2. Election of Michael L. Underwood as a member of the Supervisory Board to serve until the Annual General Meeting of Shareholders in 2016 and until his successor has been duly appointed.

3. Approval, by non-binding vote, of the compensation of the Company’s named executive officers.

4. Authorization of the preparation of the Company’s Dutch statutory annual accounts and the annual report of its Management Board in the English language and the adoption of the Company’s Dutch statutory annual accounts for the year ended December 31, 2012.

5. Approval of the final dividend for the year ended December 31, 2012 in an amount of $0.20 per share, which has previously been paid out to shareholders in the form of interim dividends.

6. Discharge of the sole member of the Company’s Management Board from liability in respect of the exercise of its duties during the year ended December 31, 2012.

7. Discharge of the members of the Company’s Supervisory Board from liability in respect of the exercise of their supervisory duties during the year ended December 31, 2012.

8. Appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm, who will audit its accounts for the year ending December 31, 2013.

9. Extension of the authority of the Company’s Management Board, acting with the approval of the Supervisory Board, to repurchase up to 10% of the Company’s issued share capital until November 8, 2014 on the open market, through privately negotiated transactions or in one or more self tender offers for a price per share not less than the nominal value of a share and not higher than 110% of the most recently available (as of the time of repurchase) price of a share on any securities exchange where our shares are traded.

10. Approval of the extension of the authority of the Company’s Supervisory Board to issue shares and/or grant rights to acquire the Company’s shares (including options to subscribe for shares), never to exceed the number of authorized but unissued shares, and to limit or exclude the preemptive rights of shareholders with respect to the issuance of shares and/or the grant of the right to acquire shares, until May 8, 2018.

11. Approval of the amendment to the Chicago Bridge & Iron 2001 Employee Stock Purchase Plan.

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.