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Insider Filings - XIAO DEMING
Last Updated 
10-Jul-09
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XIAO DEMING: Declared Holdings
Company/RelationshipReportedShares  Ownership
Monolithic Power Systems, Inc.
Officer
NasdaqGS:MPWR
(historical quotes, profile, other insiders) 		29-May-09
18-May-09		63,908
   6,137
70,045		  Direct
  Indirect  
  Total

Insider & restricted shareholder transactions reported over the last two years
DateSharesStockTransaction
29-May-09 48,334MPWR Sale at $20.49 per share.
(Proceeds of $990,363)
29-May-09 48,334MPWR Option Exercise at $1.20 per share.
(Cost of $58,000)
26-May-09 1,331MPWR Sale at $20.11 - $20.13 per share.
(Proceeds of about $27,000)
19-May-09 542MPWR Sale at $19.96 per share.
(Proceeds of $10,818)
18-May-09 *2,398MPWR Sale at $19.05 - $19.45 per share.
(Proceeds of about $46,000)
17-Feb-09 *1,063MPWR Acquisition (Non Open Market) at $11.14 per share.
(Value of $11,841)
17-Feb-09 1,005MPWR Acquisition (Non Open Market) at $11.14 per share.
(Value of $11,195)
2-Feb-09 7,472MPWR Disposition (Non Open Market) at $11.82 per share.
(Value of $88,319)
12-Aug-08 12,429MPWR Option Exercise at $5 - $10.91 per share.
12-Aug-08 12,429MPWR Sale at $23.22 - $28.27 per share.
(Proceeds of about $320,000)
11-Aug-08 *2,568MPWR Automatic Sale at $28 - $28.02 per share.
(Proceeds of about $72,000)
11-Aug-08 *2,568MPWR Automatic Sale at $28 - $28.02 per share.
(Proceeds of about $72,000)
7-Aug-08 16,000MPWR Sale at $25.30 - $25.39 per share.
(Proceeds of about $406,000)
7-Aug-08 16,000MPWR Sale at $25.30 - $25.39 per share.
(Proceeds of about $406,000)
5-Aug-08 *2,000MPWR Acquisition (Non Open Market) at $0 per share.
5-Aug-08 *2,000MPWR Acquisition (Non Open Market) at $0 per share.
13-May-08 68,333MPWR Option Exercise at $1.20 per share.
(Cost of $81,999)
13-May-08 68,333MPWR Automatic Sale at $25 per share.
(Proceeds of $1,708,325)
15-Feb-08 *739MPWR Acquisition (Non Open Market) at $14.20 per share.
(Value of $10,493)
15-Feb-08 1,331MPWR Acquisition (Non Open Market) at $14.20 per share.
(Value of $18,900)
8-Feb-08 *3,000MPWR Acquisition (Non Open Market) at $0 per share.
8-Feb-08 60,000MPWR Acquisition (Non Open Market) at $0 per share.
17-Aug-07 12,544MPWR Sale at $19.26 per share.
(Proceeds of $241,597)
17-Aug-07 12,544MPWR Option Exercise at $0.80 - $0.8 per share.
(Cost of about $10,000)
15-Aug-07 *898MPWR Acquisition (Non Open Market) at $11.67 per share.
(Value of $10,479)
15-Aug-07 2,456MPWR Option Exercise at $0.80 - $0.8 per share.
(Cost of about $1,964)
15-Aug-07 2,456MPWR Sale at $19.12 - $19.12 per share.
(Proceeds of about $47,000)
15-Aug-07 542MPWR Acquisition (Non Open Market) at $11.67 per share.
(Value of $6,325)
14-Aug-07 14,000MPWR Option Exercise at $0.80 - $0.8 per share.
(Cost of about $11,000)
14-Aug-07 14,000MPWR Sale at $18.52 - $18.52 per share.
(Proceeds of about $259,000)
3-Aug-07 9,500MPWR Acquisition (Non Open Market) at $0 per share.
    * Indicates that some (or all) shares are held indirectly (e.g. in a trust, by a spouse, etc.)

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