Filing Details

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 17142R202

1

Names of Reporting Persons
Magnetar Constellation Master Fund, Ltd

2

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

o

(b)

x

3

SEC Use Only

4

Citizenship or Place of Organization
Cayman Islands

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:

5

Sole Voting Power

6

Shared Voting Power
4,117,772

7

Sole Dispositive Power

8

Shared Dispositive Power
4,117,772

9

Aggregate Amount Beneficially Owned by Each Reporting Person
4,117,772

10

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11

Percent of Class Represented by Amount in Row (9)
5.97%

12

Type of Reporting Person (See Instructions)
OO

Item 1(a)

Name of Issuer.
Churchill Capital Corp.

Item 1(b)

Address of Issuers Principal Executive Offices.
640 fifth Avenue, 12th Floor

New York, NY  10019

Item 2(a)

Name of Person Filing.
Magnetar Constellation Master Fund, Ltd

Item 2(b)

Address of Principal Business Office.
1603 Orrington Avenue, Suite 1300

Evanston, Illinois, 60201

Item 2(c)

Place of Organization.
Cayman Islands exempted company

Item 2(d)

Title of Class of Securities.
Common Stock, par value $0.0001 per share (the Shares)

Item 2(e)

CUSIP Number.
17142R202

Item 3

Reporting Person.

Not Applicable

Item 4

Ownership.

Item 4(a)

Amount beneficially owned:   

As of September 17, 2018, Magnetar Constellation Master Fund, Ltd held 4,117,772 Shares.

Item 4(b)

Percent of class:   

As of September 17, 2018, Magnetar Constellation Master Fund, Ltd was deemed to be the beneficial owner constituting approximately 5.97% of the total number of Shares outstanding (based upon the information provided by the Issuer in its Form 8-K filed on September 12, 2018, there were approximately 69,000,000 Shares outstanding as of September 11, 2018).

Item 4(c)

Number of shares of which such person has:

Magnetar Constellation Master Fund, Ltd:

(i)

Sole power to vote or to direct the vote:   

0

(ii)

Shared power to vote or to direct the vote:    

4,117,772

(iii)

Sole power to dispose or to direct the disposition of:   

0

(iv)

Shared power to dispose or to direct the disposition of:   

4,117,772

Item 5

Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following   o.

Item 6

Ownership of More than Five Percent on Behalf of Another Person.

Not applicable

Item 7

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

Not Applicable

Item 8

Identification and Classification of Members of the Group.

Not Applicable

Item 9

Notice of Dissolution of Group.

Not Applicable

Item 10

Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Date: September 17, 2018

MAGNETAR CONSTELLATION MASTER FUND, LTD

By: Magnetar Constellation Master Fund, Ltd, its Investment Manager

By:

/s/ Michael Turro

Name:

Michael Turro

Title:

Chief Compliance Officer