Mr. Deming Xiao - 10 Jan 2024 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Signature
/s/ Saria Tseng, attorney-in-fact for Mr. Deming Xiao
Issuer symbol
MPWR
Transactions as of
10 Jan 2024
Net transactions value
-$6,786,331
Form type
4
Filing time
11 Jan 2024, 11:37:13 UTC
Previous filing
08 Jan 2024
Next filing
07 Feb 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MPWR Common Stock Sale $292,195 -500 -0.23% $584.39 221,436 10 Jan 2024 Direct
transaction MPWR Common Stock Sale $410,347 -700 -0.32% $586.21 220,736 10 Jan 2024 Direct F1
transaction MPWR Common Stock Sale $634,279 -1,079 -0.49% $587.84 219,657 10 Jan 2024 Direct F2
transaction MPWR Common Stock Sale $1,033,889 -1,757 -0.8% $588.44 217,900 10 Jan 2024 Direct F3
transaction MPWR Common Stock Sale $1,407,184 -2,387 -1.1% $589.52 215,513 10 Jan 2024 Direct F4
transaction MPWR Common Stock Sale $2,194,996 -3,718 -1.7% $590.37 211,795 10 Jan 2024 Direct F5
transaction MPWR Common Stock Sale $549,946 -930 -0.44% $591.34 210,865 10 Jan 2024 Direct F6
transaction MPWR Common Stock Sale $118,476 -200 -0.09% $592.38 210,665 10 Jan 2024 Direct F7
transaction MPWR Common Stock Sale $5,930 -10 -0% $593.00 210,655 10 Jan 2024 Direct
transaction MPWR Common Stock Sale $121,203 -204 -0.1% $594.13 210,451 10 Jan 2024 Direct
transaction MPWR Common Stock Sale $17,886 -30 -0.01% $596.19 210,421 10 Jan 2024 Direct
holding MPWR Common Stock 455 10 Jan 2024 by Spouse
holding MPWR Common Stock 3,391 10 Jan 2024 Christopher Chao Xiao Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $586.07 to $586.55. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F2 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $587.43 to $587.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F3 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $588.09 to $588.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F4 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $589.00 to $589.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F5 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $590.00 to $590.93. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F6 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $591.00 to $591.77. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
F7 The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $592.30 to $592.46. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.