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EXHIBIT 77(O) MORGAN STANLEY DEAN WITTER CONVERTIBLE SECURITIES TRUST
10f-3 transactions for the period December 31, 1999- March 31, 2000
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TOTAL
ISSUED/
DATE PRICE SHARES % of PRINCIPAL PURCHASED
SECURITY PURCHASED SHARE PURCHASED Assets AMOUNT BY FUND BROKER(S)
America Online 12/01/99 $ 55.13 9,000 5.212% $1,250,000,000.00 0.072% SSB, GS
American Tower 02/10/00 $100.00 4,000 1.333% $ 450,000,000.00 0.889% CSFB, Deutsche
ASM Lithography 11/16/99 $100.00 2,000 0.738% $ 520,000,000.00 0.038% CSFB, AFN
Burr-Brown 02/18/00 $100.00 2,000 0.666% $ 250,000,000.00 0.800% Salomon Smith Barney
Cacheflow 11/18/99 $ 24.00 1,600 0.015% $ 120,000,000.00 0.032% Goldman Sachs
Charter Comm. 11/08/99 $ 19.00 30,200 0.231% $3,230,000,000.00 0.018% Goldman Sachs
Clear Channel 11/18/99 $100.00 3,000 1.106% $1,000,000,000.00 0.033% SSB, GS, Deutsche
Curagen 01/27/00 $100.00 1,000 0.033% $ 150,000,000.00 0.667% Lehman Brothers
Dobson Comm. 02/03/00 $ 22.00 19,300 0.155% $ 550,000,000.00 0.077% Banc of America
Emmis Communica. 10/26/99 $ 50.00 40,000 0.738 $ 143,750,000.00 3.200% DLJ, GS Deutsche
Exciteathome 12/08/99 $100.00 3,000 1.106% $ 500,000,000.00 0.600% RS, GS, DLJ
Flag Telecom 02/11/00 $ 24.00 100,000 0.766% $ 760,320,000.00 0.316% Salomon Brothers
Freemarkets Inc. 12/09/99 $ 48.00 1,500 0.027% $ 172,800,000.00 0.042% Goldman Sachs
Getty Images 03/07/00 $100.00 2,000 0.666% $ 200,000,000.00 1.000% Deutsche Bank
Global Crossing 10/29/99 $100.00 20,000 0.738% $1,000,000,000.00 0.200% ML, GS, SSB
Global Crossing 12/09/99 $250.00 12,000 1.106% $ 50,000,000.00 0.600% ML, GS SSB
Kulicke & Soffa 12/08/99 $100.00 2,000 0.738% $ 150,000,000.00 0.400% BOA, RS
Palm Inc. 03/01/00 $ 38.00 5,650 0.066% $ 874,000,000.00 0.025% BancAmerica
Semtech 02/09/00 $100.00 3,000 0.100% $ 350,000,000.00 0.857% BOA
United Global Tele 12/02/99 $ 50.00 30,000 0.553% $ 250,000,000.00 0.600% DLJ, MS, ML
Young & Rubicam 01/14/00 $100.00 2,000 0.666% $ 250,000,000.00 0.080% SSB, BS
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