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Filing Details

Accession Number:: 0001214659-24-017281
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2024-10-08 13:14:04
Reporting Period:: 2024-10-07

Accepted Time:: 2024-10-08 13:14:04
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1280452	Monolithic Power Systems Inc	MPWR	Semiconductors & Related Devices (3674)	770466789

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1360833	Maurice Sciammas	5808 Lake Washington Blvd Ne Kirkland WA 98033	Evp, Ww Sales & Marketing	No	No	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2024-10-07	226	$922.72	114,586	No	4	S	Direct
Common Stock	Disposition	2024-10-07	800	$925.91	113,786	No	4	S	Direct
Common Stock	Disposition	2024-10-07	75	$926.57	113,711	No	4	S	Direct
Common Stock	Disposition	2024-10-07	1,695	$927.40	112,016	No	4	S	Direct
Common Stock	Disposition	2024-10-07	1,576	$928.39	110,440	No	4	S	Direct
Common Stock	Disposition	2024-10-07	1,774	$929.55	108,666	No	4	S	Direct
Common Stock	Disposition	2024-10-07	789	$930.51	107,877	No	4	S	Direct
Common Stock	Disposition	2024-10-07	2,304	$931.33	105,573	No	4	S	Direct
Common Stock	Disposition	2024-10-07	1,559	$932.52	104,014	No	4	S	Direct
Common Stock	Disposition	2024-10-07	2	$933.16	104,012	No	4	S	Direct
Common Stock	Disposition	2024-10-07	200	$935.00	103,829	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	32,064	Indirect	Sciammas Family Trust
Common Stock	23,015	Indirect	By Sciammas Trust 2020
Common Stock	20,206	Indirect	Various Sciammas GRATs
Common Stock	13,424	Indirect	Maurice Sciammas Trust FBO Oski Crew
Common Stock	13,424	Indirect	Christina Sciammas Trust FBO Oski Crew
Common Stock	5,000	Indirect	Clement Sciammas Family 2021 Trust
Common Stock	2,000	Indirect	Rosalind Sciammas Family 2021 Trust
Common Stock	2,000	Indirect	Peter Rafferty and Eric Toothill 2021Trust
Common Stock	1,699	Indirect	The Joseph Roger Sciammas 2020 Irrevocable Trust
Common Stock	1,699	Indirect	The Chloe Liliane Sciammas 2020 Irrevocable Trust
Common Stock	1,699	Indirect	The Patrick Francis Sciammas 2020 Irrevocable Trust

Footnotes

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 $925.89 to $925.99. 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.
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 $927.00 to $927.81. 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.
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 $928.14 to $928.69. 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.
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 $929.09 to $929.72. 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.
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 $930.05 to $930.91. 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.
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 $931.00 to $931.85. 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.
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 $932.00 to $932.90. 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.
Ending balance includes 17 shares acquired on August 15, 2024 through the Company's qualified ESPP program.