<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 13F
INFORMATION REQUIRED OF INSTITUTIONAL INVESTMENT MANAGERS PURSUANT
TO SECTION 13(f) OF THE SECURITIES EXCHANGE ACT OF 1934 AND RULES THEREUNDER
Report for the Calendar Year or Quarter Ended December 31, 1999.
(PLEASE READ INSTRUCTIONS BEFORE PREPARING FORM.)
If amended report, check here: / /
Folksamerica Holding Company, Inc.
- -------------------------------------------------------------------------------
Name of Institutional Investment Manager
One Liberty Plaza New York NY 10006
- -------------------------------------------------------------------------------
Business Address (Street) (City) (State) (Zip)
Michael S. Paquette (603) 640-2205 Senior Vice President and Controller
- -------------------------------------------------------------------------------
Name, Phone No., and Title of Person Duly Authorized to Submit This Report.
ATTENTION
INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACTS CONSTITUTE FEDERAL CRIMINAL
VIOLATIONS. SEE 18 U.S.C. 1001 AND 15 U.S.C. 78FF(a).
The institutional investment manager submitting this Form and its
attachments are the person by whom it is signed represent hereby that all
information contained therein is true, correct and complete. It is understood
that all required items, statements and schedules are considered integral parts
of this Form and that the submission of any amendment represents that all
unamended items, statements and schedules remain true, correct and complete as
previously submitted.
Pursuant to the requirements of Securities Exchange Act of 1934, the
undersigned institutional investment manager has caused this report to be signed
on its behalf in the City of Hanover and State of New Hampshire on the 11th day
of February, 2000.
Folksamerica Holding Company, Inc.
------------------------------------------
(Name of Institutional Investment Manager)
------------------------------------------
(Manual Signature of Person Duly Authorized
to Submit This Report)
Name and 13F file numbers of ALL Institutional Investment Managers with respect
to which this schedule is filled (other than the one filing this report): (LIST
IN ALPHABETICAL ORDER).
13F File Numbers will be assigned to Institutional Investment Managers after
they file their first report.
Name: 13F File No.: Name: 13F File No.:
- -------------------- ---------------- -------------------- ----------------
- -------------------- ---------------- -------------------- ----------------
- -------------------- ---------------- -------------------- ----------------
- -------------------- ---------------- -------------------- ----------------
- -------------------- ---------------- -------------------- ----------------
- -------------------- ---------------- -------------------- ----------------
<PAGE>
FOLKSAMERICA HOLDING COMPANY, INC.
February 11, 2000
Securities and Exchange Commission
Washington, DC
A report on Form 13F for the Quarter Ended December 31, 1999 has been filed by
White Mountains Insurance Group, Ltd. with respect to securities over which
Folksamerica Holding Company, Inc. has investment discretion.
