13D Filing: Related Real Estate Fund II, L.P. and Ladder Capital Corp (LADR)

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED

PURSUANT TO § 240.13d-2(a)

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

Ladder Capital
Corp

(Name of Issuer)

Class A
Common Stock, par value $0.001 per share

(Title of Class of Securities)

505743 104

(CUSIP
Number)

Richard OToole, Esq.

Related Fund Management, LLC

60 Columbus Circle

New
York, New York 10023

(212) 421-5333

with a copy to:

Alan J. Sinsheimer, Esq. and Robert W. Downes, Esq.

Sullivan & Cromwell LLP

125 Broad Street

New
York, New York 10004

(212) 558-4000

(Name, Address and Telephone Number of Person Authorized to

Receive Notices and Communications)

February 2, 2018

(Date of Event Which Requires Filing of This Statement)

If the filing person has
previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e),
240.13d-1(f) or 240.13d-1(g), check the following box.  ☐

Note: Schedules filed in paper format shall
include a signed original and five copies of the schedule, including all exhibits. See

§ 240.13d-7 for
other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).