PROSPECTUS Dated May 5, 1999 Pricing Supplement No. 75 to
PROSPECTUS SUPPLEMENT Registration Statement No. 333-75289
Dated May 6, 1999 May 4, 2000
Rule 424(b)(3)
Morgan Stanley Dean Witter & Co.
MEDIUM-TERM NOTES, SERIES C
Senior Floating Rate Notes
-----------------------
We will not redeem these Medium-Term Notes, Series C (Senior Floating Rate
Notes) prior to the maturity date. We describe the basic features of this type
of note in the section called "Description of Notes--Floating Rate Notes" in
the accompanying prospectus supplement, subject to and as modified by the
provisions described below.
Principal Amount: $25,000,000
Maturity Date: May 10, 2002
Interest Accrual
Date: May 10, 2000
Interest Payment
Dates: Each February 10,
May 10, August 10,
and November 10,
commencing August
10, 2000
Initial Interest Rate: To be determined on
the business day
immediately preceding
the Original Issue
Date
Base Rate: Federal Funds Rate
Index Maturity: One Day
Spread
(Plus or Minus): Plus 0.30% per annum
Index Currency: N/A
Interest Payment
Period: Quarterly
Specified Currency: U.S. Dollars
Issue Price: 100%
Settlement Date
(Original Issue Date): May 10, 2000
Initial Interest Reset
Date: May 11, 2000
Interest Reset Dates: Each business day
except the business
day immediately
preceding each
interest payment date
Interest Reset Period: Daily
Interest Determination
Dates: The business day
immediately preceding
each interest reset date
Reporting Service: Telerate (Page 120)
Book Entry Note or
Certificated Note: Book Entry Note
Senior Note or
Subordinated Note: Senior Note
Agent: Morgan Stanley & Co.
Incorporated
Calculation Agent: The Chase Manhattan
Bank
Minimum Denomination: $1,000
CUSIP: 61745EPV7
Terms not defined above have the meanings given to such terms in the
accompanying prospectus supplement.
MORGAN STANLEY DEAN WITTER
