<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: MARCH 31, 2000
Check here if Amendment [ ]; Amendment Number: _____________________
This Amendment: (Check only one:): [ ] is a restatement
[ ] adds new holdings entries
Institutional Investment manager Filing this Report:
Name: MICHAEL LARSON
Address: 2365 CARILLON POINT
KIRKLAND, WA 98033
Form 13F File number: 28-05147
The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.
Person Signing this report on Behalf of Reporting Manager:
Name: MICHAEL LARSON
Title: REPORTING MANAGER
Phone: (425) 803-0720
Signature, Place, and Date of Signing
/s/ Michael Larson Kirkland, Washington May 11, 2000
- ---------------------- ----------------------- -----------------
[Signature] [City, State] [Date]
Report Type (Check only one.):
[ X ] 13F HOLDING REPORT. (Check here if all holdings of this reporting manager
are reported in this report.)
[ ] 13F NOTICE: (Check here if no holdings reported are in this report, and
all holdings are reported by other reporting manager(s).)
[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this
reporting manager are reported in this report and a portion are reported
by other reporting managers(s).)
Form 13F File Number Name
28-
------------------------- -------------------------------
[Repeat as necessary.]
PURSUANT TO RULE 24b-2 OF THE SECURITIES EXCHANGE ACT OF 1934, CONFIDENTIAL
INFORMATION HAS BEEN OMITTED FROM THIS FORM 13F AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION.
1
<PAGE>
Form 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 1
Form 13F Information Table Entry Value: *
Form 13F Information Table Value Total: $*
(thousands)
* PURSUANT TO RULE 24b-2 OF THE SECURITIES EXCHANGE ACT OF 1934, CONFIDENTIAL
INFORMATION HAS BEEN OMITTED FROM THIS FORM 13F AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION.
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.
No. Form 13F File Number Name
1 28-05149 Cascade Investment L.L.C.
[Repeat as necessary.]
2
<PAGE>
<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
FORM 13F INFORMATION TABLE*
- ---------------------------------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------------------------------------------------------------------------------
AMOUNT AND TYPE OF
SECURITY
- ---------------------------------------------------------------------------------------------------------------------------------
NAME OF ISSUER TITLE OF CLASS CUSIP VALUE (X$1000) SHARES/PRN SH/ INVESTMENT
-------------- ---------------- ------- ---------------- ------------ ----- -----------
AMOUNT PRN DISCRETION
------------ ----- -----------
- ---------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C>
AVISTA CORP COMMON STOCK 05379B100 72,840.63 1,787,500 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
ICOS CORP COMMON STOCK 449295100 178,291.11 4,935,394 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
NEWPORT NEWS SHIPBUILDING COMMON STOCK 652228100 77,527.73 2,562,900 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
OTTER TAIL POWER COMPANY COMMON STOCK 689648100 19,267.60 966,400 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
PAN AMERN SILVER CORP COMMON STOCK 697900100 11,075.31 2,905,000 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
REPUBLIC SVCS INC COMMON STOCK 760759100 151,637.50 13,864,000 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
SCHNITZER STL INDS INC COMMON STOCK 806882100 10,877.24 602,200 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
WARNER CHILCOTT PLC SPONSORED ADR 934435200 23,936.61 1,484,441 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
WISCONSIN CENTRAL TRANSPORTATION COMMON STOCK 976592100 16,353.75 1,335,000 SH YES
- ---------------------------------------------------------------------------------------------------------------------------------
<CAPTION>
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
VOTING AUTHORITITY
- -------------------------------------------------------------------------------
NAME OF ISSUER OTHER SOLE SHARED NONE
-------------- ------ ---- ------ ----
MANAGERS
--------
- -------------------------------------------------------------------------------
<S> <C> <C> <C> <C>
AVISTA CORP N/A YES
- -------------------------------------------------------------------------------
ICOS CORP N/A YES
- -------------------------------------------------------------------------------
NEWPORT NEWS SHIPBUILDING N/A YES
- -------------------------------------------------------------------------------
OTTER TAIL POWER COMPANY N/A YES
- -------------------------------------------------------------------------------
PAN AMERN SILVER CORP N/A YES
- -------------------------------------------------------------------------------
REPUBLIC SVCS INC N/A YES
- -------------------------------------------------------------------------------
SCHNITZER STL INDS INC N/A YES
- -------------------------------------------------------------------------------
WARNER CHILCOTT PLC N/A YES
- -------------------------------------------------------------------------------
WISCONSIN CENTRAL TRANSPORTATION N/A YES
- -------------------------------------------------------------------------------
</TABLE>
*PURSUANT TO RULE 24b-2 OF THE SECURITIES EXCHANGE ACT OF 1934, CONFIDENTIAL
INFORMATION HAS BEEN OMITTED FROM THIS FORM 13F AND FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION.
3