MONOLITHIC POWER SYSTEMS, INC. (MPWR)

Data as of Sep 30, 2026, from SEC Form 4 filings.

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Latest MPWR insider trades

Michael Hsing - Officer
Open-market sale$789K

About MONOLITHIC POWER SYSTEMS, INC. (MPWR)

MONOLITHIC POWER SYSTEMS, INC. is an SEC registrant, filing under CIK 0001280452, classified as semiconductors and related devices. We track it alongside the rest of the Information Technology sector.

Sector: Information Technology

SEC filings for MPWR on EDGAR

MPWR Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	14	30,273	$40.72M
Bona-fide gift	4	54,000
Other acquisition / disposition	1	5

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

MPWR insider transactions (Form 4)

107

108 Form 4 filings on record, the earliest from Oct 2, 2024, newest first. Filing history page 1 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	596^{footnote F1}	$1,323.31^{footnote F3}	$789K
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	2,121^{footnote F1}	$1,328.54^{footnote F4}	$2.82M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	1,111^{footnote F1}	$1,333.34^{footnote F5}	$1.48M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	2,949^{footnote F1}	$1,338.66^{footnote F6}	$3.95M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	5,783^{footnote F1}	$1,343.76^{footnote F7}	$7.77M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	6,343^{footnote F1}	$1,347.15^{footnote F8}	$8.54M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	10,967^{footnote F1}	$1,351.43^{footnote F9}	$14.82M
Sep 28, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	130^{footnote F1}	$1,356.94^{footnote F10}	$176K
Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. Footnote F3 (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 $1,320.64 to $1,325.61. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,325.65 to $1,330.62. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,330.65 to $1,335.51. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,335.68 to $1,340.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,340.69 to $1,345.65. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,345.66 to $1,350.47. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,350.84 to $1,355.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F10 (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 $1,356.78 to $1,357.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Aug 31, 2026	Saria Tseng - Officer	Gift	Common Stock	2,000^{footnote F1}	$0.00	-
Aug 31, 2026	Saria Tseng - Officer	Gift	Common Stock	2,000^{footnote F2}	$0.00	-
Footnote F1 (shares): 2,000 shares were transferred from the reporting person's direct holdings to C&T Family Irrevocable Trust, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer. Footnote F2 (shares): 2,000 shares were received by C&T Family Irrevocable Trust, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.
Aug 24, 2026	Robert W. Dean II - Officer	Other	Common Stock	5	$0.00^{footnote F3}	-
Aug 24, 2026	Robert W. Dean II - Officer	Open-market sale	Common Stock	32^{footnote F1}	$1,297.72^{footnote F2}	$42K
Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units. Footnote F2 (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 $1,296.07 to $1,298.01. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR
Aug 24, 2026	Kuo Wei Herbert Chang - Director	Open-market sale	Common Stock	50	$1,281.57	$64K
Aug 17, 2026	Robert W. Dean II - Officer	Open-market sale	Common Stock	6^{footnote F1}	$1,413.64	$8K
Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.
Aug 11, 2026	Kuo Wei Herbert Chang - Director	Open-market sale	Common Stock	50	$1,420.00	$71K
Aug 4, 2026	Maurice Sciammas - Officer	Gift	Common Stock	25,000^{footnote F1}	$0.00	-
Aug 4, 2026	Maurice Sciammas - Officer	Gift	Common Stock	25,000^{footnote F2}	$0.00	-
Footnote F1 (shares): 25,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer. Footnote F2 (shares): 25,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.
Aug 5, 2026	Robert W. Dean II - Officer	Open-market sale	Common Stock	105	$1,344.27	$141K
Aug 3, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	30^{footnote F1}	$1,343.94	$40K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.
Jul 25, 2026	Robert W. Dean II - Officer	Grant or award	Common Stock	1,359^{footnote F1}	$0.00	-
Footnote F1 (shares): On July 25, 2023, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of stock price targets and relative total stockholder return percentile rank over a three-year performance period. On July 25, 2026, the Company's… Full note on SEC EDGAR
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	527^{footnote F1}	$1,314.03^{footnote F2}	$692K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	274^{footnote F1}	$1,318.42^{footnote F3}	$361K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	409^{footnote F1}	$1,323.93^{footnote F4}	$541K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	464^{footnote F1}	$1,329.30^{footnote F5}	$617K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	776^{footnote F1}	$1,334.59^{footnote F6}	$1.04M
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	1,460^{footnote F1}	$1,339.59^{footnote F7}	$1.96M
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	1,864^{footnote F1}	$1,344.16^{footnote F8}	$2.51M
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	1,506^{footnote F1}	$1,348.91^{footnote F9}	$2.03M
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	5,640^{footnote F1}	$1,352.95^{footnote F10}	$7.63M
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	50^{footnote F1}	$1,359.36^{footnote F11}	$68K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	240^{footnote F1}	$1,369.18^{footnote F12}	$329K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	472^{footnote F1}	$1,375.47^{footnote F13}	$649K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	418^{footnote F1}	$1,378.73^{footnote F14}	$576K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	410^{footnote F1}	$1,384.11^{footnote F15}	$567K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	50^{footnote F1}	$1,388.19^{footnote F16}	$69K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	213^{footnote F1}	$1,396.16^{footnote F17}	$297K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	117^{footnote F1}	$1,400.45^{footnote F18}	$164K
Jul 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	110^{footnote F1}	$1,405.71^{footnote F19}	$155K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025. Footnote F2 (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 $1,311.45 to $1,316.40 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,316.56 to $1,321.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,321.72 to $1,326.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,326.94 to $1,331.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,331.95 to $1,336.95. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,336.97 to $1,341.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,341.99 to $1,346.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,347.09 to $1,352.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F10 (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 $1,352.13 to $1,357.03. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F11 (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 $1,357.88 to $1,362.57. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F12 (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 $1,366.15 to $1,371.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F13 (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 $1,371.23 to $1,376.20. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F14 (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 $1,376.51 to $1,381.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F15 (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 $1,381.79 to $1,386.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F16 (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 $1,388.18 to $1,388.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F17 (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 $1,393.94 to $1,398.92. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F18 (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 $1,398.97 to $1,400.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F19 (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 $1,404.25 to $1,406.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Jul 1, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	30^{footnote F1}	$1,351.61	$41K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.
Jun 1, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	30^{footnote F1}	$1,533.95	$46K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.
May 29, 2026	Maurice Sciammas - Officer	Gift	Common Stock	12,472	$0.00^{footnote F1}	-
Footnote F1 (price): The reported transaction involved distributions of securities from the various GRATs, of which the reporting person is a trustee, to individuals who are not immediate family members sharing the same household. No funds were exchanged and no sale of shares occurred in the… Full note on SEC EDGAR
May 27, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	7,565	$1,700.00	$12.86M
May 26, 2026	Robert W. Dean II - Officer	Open-market sale	Common Stock	22^{footnote F1}	$1,649.56^{footnote F2}	$36K
Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units. Footnote F2 (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 $1,647.84 to $1,650.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
May 26, 2026	Jeff Zhou	Open-market sale	Common Stock	486	$1,680.00	$816K
May 22, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	5,000	$1,586.43	$7.93M
May 22, 2026	Saria Tseng - Officer	Gift	Common Stock	200	$0.00^{footnote F1}	-
Footnote F1 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	2,929	$1,503.05^{footnote F10}	$4.40M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	3,769	$1,507.70^{footnote F11}	$5.68M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	551	$1,513.11^{footnote F12}	$834K
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	352	$1,518.15^{footnote F13}	$534K
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	130	$1,521.43^{footnote F14}	$198K
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	3,424	$1,462.61^{footnote F2}	$5.01M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	5,819	$1,467.62^{footnote F3}	$8.54M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	5,049	$1,472.84^{footnote F4}	$7.44M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	4,082	$1,476.96^{footnote F5}	$6.03M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	5,737	$1,482.51^{footnote F6}	$8.51M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	608	$1,499.46^{footnote F9}	$912K
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	6,688	$1,486.76^{footnote F7}	$9.94M
May 18, 2026	Michael Hsing - Officer	Open-market sale	Common Stock	862	$1,491.48^{footnote F8}	$1.29M
Footnote F2 (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 $1,459.96 to $1,464.86. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,464.97 to $1,469.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,469.95 to $1,474.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,474.95 to $1,479.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,479.99 to $1,484.93. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,484.95 to $1,489.73. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,490.17 to $1,494.10. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $,1495.74 to $1,500.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F10 (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 $1,500.75 to $1,505.70. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F11 (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 $1,505.70 to $1,510.67. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F12 (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 $1,510.68 to $1,515.44. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F13 (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 $1,516.26 to $1,519.25. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F14 (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 $1,521.33 to $1,521.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
May 18, 2026	Robert W. Dean II - Officer	Open-market sale	Common Stock	4^{footnote F1}	$1,563.28	$6K
Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	3,741^{footnote F1}	$1,550.36^{footnote F2}	$5.80M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	1,717^{footnote F1}	$1,557.48^{footnote F3}	$2.67M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	2,010^{footnote F1}	$1,562.01^{footnote F4}	$3.14M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	2,020^{footnote F1}	$1,567.15^{footnote F5}	$3.17M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	1,312^{footnote F1}	$1,571.49^{footnote F6}	$2.06M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	703^{footnote F1}	$1,577.75^{footnote F7}	$1.11M
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	447^{footnote F1}	$1,582.21^{footnote F8}	$707K
May 15, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	50^{footnote F1}	$1,585.51^{footnote F9}	$79K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025. Footnote F2 (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 $1,549.62 to $1,554.55. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,554.59 to $1,559.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,559.61 to $1,564.59. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,564.75 to $1,569.67. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,569.78 to $1,574.53. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,574.9 to $1,579.7. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,579.97 to $1,584.43. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,585.17 to $1,586.76. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
May 13, 2026	Maurice Sciammas - Officer	Gift	Common Stock	1,563^{footnote F1}	$0.00	-
May 13, 2026	Maurice Sciammas - Officer	Gift	Common Stock	1,563^{footnote F2}	$0.00	-
Footnote F1 (shares): 1,563 shares were transferred from three GRATs, of which the reporting person is a Trustee, to the Sciammas Family Trust, of which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer. Footnote F2 (shares): 1,563 shares were received by the Sciammas Family Trust, of which the reporting person is a Trustee, and transferred from three GRATs, of which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer.
May 13, 2026	Robert W. Dean II - Officer	Other	Common Stock	2,156	$0.00^{footnote F1}	-
Footnote F1 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	320	$1,559.88^{footnote F1}	$499K
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	814	$1,566.36^{footnote F2}	$1.28M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	1,078	$1,571.58^{footnote F3}	$1.69M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	834	$1,575.57^{footnote F4}	$1.31M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	1,879	$1,581.81^{footnote F5}	$2.97M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	2,587	$1,586.81^{footnote F6}	$4.11M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	1,355	$1,591.38^{footnote F7}	$2.16M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	2,619	$1,596.42^{footnote F8}	$4.18M
May 6, 2026	Eugen J. Elmiger	Open-market sale	Common Stock	514	$1,600.14^{footnote F9}	$822K
Footnote F1 (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 $1,557.08 to $1,561.97. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F2 (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 $1,563.39 to $1,568.28. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,568.78 to $1,573.40. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,573.86 to $1,578.73. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,578.85 to $1,583.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,583.79 to $1,588.65. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,588.80 to $1,593.63. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,593.95 to $1,598.78. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,598.99 to $1,602.68 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
May 6, 2026	Deming Xiao - Officer	Open-market sale	Common Stock	3,329	$1,648.38^{footnote F2}	$5.49M
May 6, 2026	Deming Xiao - Officer	Open-market sale	Common Stock	14,167	$1,652.80^{footnote F3}	$23.42M
May 6, 2026	Deming Xiao - Officer	Open-market sale	Common Stock	11,597	$1,657.93^{footnote F4}	$19.23M
May 6, 2026	Deming Xiao - Officer	Open-market sale	Common Stock	907	$1,661.38^{footnote F5}	$1.51M
Footnote F2 (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 $1,645.48 to $1,650.43. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,650.75 to $1,655.75. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,655.80 to $1,660.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,660.99 to $1,662 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
May 6, 2026	Eileen Wynne	Open-market sale	Common Stock	335	$1,582.68	$530K
May 5, 2026	Jeff Zhou	Open-market sale	Common Stock	514	$1,574.48	$809K
May 5, 2026	Jeff Zhou	Open-market sale	Common Stock	500	$1,600.00	$800K
May 6, 2026	Jeff Zhou	Open-market sale	Common Stock	500	$1,650.00	$825K
May 4, 2026	Maurice Sciammas - Officer	Open-market sale	Common Stock	30^{footnote F1}	$1,588.73	$48K
Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	560^{footnote F1}	$1,266.48^{footnote F2}	$709K
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	360^{footnote F1}	$1,270.29^{footnote F3}	$457K
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	240^{footnote F1}	$1,279.55^{footnote F4}	$307K
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	120^{footnote F1}	$1,287.12^{footnote F5}	$154K
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	400^{footnote F1}	$1,292.08^{footnote F6}	$517K
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	800^{footnote F1}	$1,302.52^{footnote F7}	$1.04M
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	1,279^{footnote F1}	$1,308.30^{footnote F8}	$1.67M
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	4,244^{footnote F1}	$1,312.82^{footnote F9}	$5.57M
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	840^{footnote F1}	$1,319.25^{footnote F10}	$1.11M
Apr 8, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	120^{footnote F1}	$1,321.94^{footnote F11}	$159K
Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted on 11/28/2025. Footnote F2 (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 $1,264.04 to $1,268.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,269.36 to $1,272.23. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,277.78 to $1,281.49. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,284.26 to $1,289.24. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,290.95 to $1,294.78. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,299.99 to $1,304.82. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,305.08 to $1,310.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,310.27 to $1,315.08. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F10 (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 $1,316.25 to $1,321.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F11 (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 $1,321.50 to $1,322.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	1,396^{footnote F1}	$1,179.50^{footnote F9}	$1.65M
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	244^{footnote F1}	$1,139.96^{footnote F2}	$278K
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	556^{footnote F1}	$1,144.42^{footnote F3}	$636K
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	480^{footnote F1}	$1,149.05^{footnote F4}	$552K
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	560^{footnote F1}	$1,159.62^{footnote F5}	$649K
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	684^{footnote F1}	$1,165.66^{footnote F6}	$797K
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	2,036^{footnote F1}	$1,170.38^{footnote F7}	$2.38M
Apr 6, 2026	Saria Tseng - Officer	Open-market sale	Common Stock	1,680^{footnote F1}	$1,176.35^{footnote F8}	$1.98M
Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted on 11/28/2025. Footnote F2 (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 $1,136.69 to $1,141.64. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F3 (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 $1,141.91 to $ 1,146.02. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F4 (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 $1,147.58 to $1,152.19. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F5 (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 $1,156.58 to $1,161.42. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F6 (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 $1,163.16 to $1,168.12. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F7 (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 $1,168.24 to $ 1,172.42. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F8 (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 $1,173.31 to $1,178.29. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR Footnote F9 (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 $1,178.53 to $1,180.83. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

Recent MPWR Form 8-K filings

Read MPWR company news

Oct 29, 2026Item 2.02, 5.02, 9.01

Read the filing on SEC EDGAR

Sep 10, 2026Item 8.01, 9.01

Read the filing on SEC EDGAR

Jul 30, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

Jun 12, 2026Item 5.07, 8.01, 9.01

Recent MPWR Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Sep 28, 2026	Hsing Michael	Officer, Director	30,000	$40.35M	View on EDGAR
Aug 24, 2026	Robert W. Dean II	Officer	32

Congress trades in MPWR

All congress trades

Stock trades in MPWR disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Byron DonaldsRepublican, FL-19	Sale (partial)

MPWR insider trading FAQ

What is the latest insider trade for MPWR?

MONOLITHIC POWER SYSTEMS, INC. (MPWR) had 9 insider filings in the last 90 days, with the most recent on 30 September 2026. The full record for MPWR runs to 108 Form 4 filings, the earliest from 2 October 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying MPWR stock?

No insider purchases of MPWR were filed in the last 90 days.

How many insiders are selling MPWR stock?

14 insider sales of MPWR were filed in the last 90 days, totaling $40.72M.

Where can I see MPWR SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects MPWR Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 30, 2026 - Michael Hsing view on EDGAR
Sep 2, 2026 - Saria Tseng view on EDGAR
Aug 26, 2026 - Robert W. Dean II view on EDGAR
Aug 25, 2026 - Kuo Wei Herbert Chang view on EDGAR
Aug 20, 2026 - Robert W. Dean II view on EDGAR
Aug 13, 2026 - Kuo Wei Herbert Chang view on EDGAR
Aug 7, 2026 - Maurice Sciammas view on EDGAR
Aug 6, 2026 - Robert W. Dean II view on EDGAR
Aug 5, 2026 - Maurice Sciammas view on EDGAR

Related companies with recent insider activity

Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where MPWR's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

30,273

$40.72M

Bona-fide gift

54,000

Other acquisition / disposition

Traded

Insider

Transaction

Security

Price

Value

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

596^{footnote F1}

$1,323.31^{footnote F3}

$789K

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

2,121^{footnote F1}

$1,328.54^{footnote F4}

$2.82M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

1,111^{footnote F1}

$1,333.34^{footnote F5}

$1.48M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

2,949^{footnote F1}

$1,338.66^{footnote F6}

$3.95M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

5,783^{footnote F1}

$1,343.76^{footnote F7}

$7.77M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

6,343^{footnote F1}

$1,347.15^{footnote F8}

$8.54M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

10,967^{footnote F1}

$1,351.43^{footnote F9}

$14.82M

Sep 28, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

130^{footnote F1}

$1,356.94^{footnote F10}

$176K

Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.
Footnote F3 (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 $1,320.64 to $1,325.61. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,325.65 to $1,330.62. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,330.65 to $1,335.51. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,335.68 to $1,340.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,340.69 to $1,345.65. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,345.66 to $1,350.47. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,350.84 to $1,355.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (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 $1,356.78 to $1,357.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

Aug 31, 2026

Saria Tseng - Officer

Gift

Common Stock

2,000^{footnote F1}

$0.00

Aug 31, 2026

Saria Tseng - Officer

Gift

Common Stock

2,000^{footnote F2}

$0.00

Footnote F1 (shares): 2,000 shares were transferred from the reporting person's direct holdings to C&T Family Irrevocable Trust, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.
Footnote F2 (shares): 2,000 shares were received by C&T Family Irrevocable Trust, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.

Aug 24, 2026

Robert W. Dean II - Officer

Other

Common Stock

$0.00^{footnote F3}

Aug 24, 2026

Robert W. Dean II - Officer

Open-market sale

Common Stock

32^{footnote F1}

$1,297.72^{footnote F2}

$42K

Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.
Footnote F2 (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 $1,296.07 to $1,298.01. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR

Aug 24, 2026

Kuo Wei Herbert Chang - Director

Open-market sale

Common Stock

$1,281.57

$64K

Aug 17, 2026

Robert W. Dean II - Officer

Open-market sale

Common Stock

6^{footnote F1}

$1,413.64

$8K

Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

Aug 11, 2026

Kuo Wei Herbert Chang - Director

Open-market sale

Common Stock

$1,420.00

$71K

Aug 4, 2026

Maurice Sciammas - Officer

Gift

Common Stock

25,000^{footnote F1}

$0.00

Aug 4, 2026

Maurice Sciammas - Officer

Gift

Common Stock

25,000^{footnote F2}

$0.00

Footnote F1 (shares): 25,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.
Footnote F2 (shares): 25,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.

Aug 5, 2026

Robert W. Dean II - Officer

Open-market sale

Common Stock

105

$1,344.27

$141K

Aug 3, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

30^{footnote F1}

$1,343.94

$40K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

Jul 25, 2026

Robert W. Dean II - Officer

Grant or award

Common Stock

1,359^{footnote F1}

$0.00

Footnote F1 (shares): On July 25, 2023, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of stock price targets and relative total stockholder return percentile rank over a three-year performance period. On July 25, 2026, the Company's… Full note on SEC EDGAR

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

527^{footnote F1}

$1,314.03^{footnote F2}

$692K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

274^{footnote F1}

$1,318.42^{footnote F3}

$361K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

409^{footnote F1}

$1,323.93^{footnote F4}

$541K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

464^{footnote F1}

$1,329.30^{footnote F5}

$617K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

776^{footnote F1}

$1,334.59^{footnote F6}

$1.04M

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

1,460^{footnote F1}

$1,339.59^{footnote F7}

$1.96M

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

1,864^{footnote F1}

$1,344.16^{footnote F8}

$2.51M

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

1,506^{footnote F1}

$1,348.91^{footnote F9}

$2.03M

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

5,640^{footnote F1}

$1,352.95^{footnote F10}

$7.63M

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

50^{footnote F1}

$1,359.36^{footnote F11}

$68K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

240^{footnote F1}

$1,369.18^{footnote F12}

$329K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

472^{footnote F1}

$1,375.47^{footnote F13}

$649K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

418^{footnote F1}

$1,378.73^{footnote F14}

$576K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

410^{footnote F1}

$1,384.11^{footnote F15}

$567K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

50^{footnote F1}

$1,388.19^{footnote F16}

$69K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

213^{footnote F1}

$1,396.16^{footnote F17}

$297K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

117^{footnote F1}

$1,400.45^{footnote F18}

$164K

Jul 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

110^{footnote F1}

$1,405.71^{footnote F19}

$155K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.
Footnote F2 (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 $1,311.45 to $1,316.40 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,316.56 to $1,321.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,321.72 to $1,326.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,326.94 to $1,331.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,331.95 to $1,336.95. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,336.97 to $1,341.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,341.99 to $1,346.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,347.09 to $1,352.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (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 $1,352.13 to $1,357.03. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F11 (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 $1,357.88 to $1,362.57. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F12 (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 $1,366.15 to $1,371.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F13 (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 $1,371.23 to $1,376.20. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F14 (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 $1,376.51 to $1,381.11. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F15 (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 $1,381.79 to $1,386.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F16 (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 $1,388.18 to $1,388.22. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F17 (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 $1,393.94 to $1,398.92. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F18 (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 $1,398.97 to $1,400.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F19 (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 $1,404.25 to $1,406.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

Jul 1, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

30^{footnote F1}

$1,351.61

$41K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

Jun 1, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

30^{footnote F1}

$1,533.95

$46K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

May 29, 2026

Maurice Sciammas - Officer

Gift

Common Stock

12,472

$0.00^{footnote F1}

Footnote F1 (price): The reported transaction involved distributions of securities from the various GRATs, of which the reporting person is a trustee, to individuals who are not immediate family members sharing the same household. No funds were exchanged and no sale of shares occurred in the… Full note on SEC EDGAR

May 27, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

7,565

$1,700.00

$12.86M

May 26, 2026

Robert W. Dean II - Officer

Open-market sale

Common Stock

22^{footnote F1}

$1,649.56^{footnote F2}

$36K

Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.
Footnote F2 (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 $1,647.84 to $1,650.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

May 26, 2026

Jeff Zhou

Open-market sale

Common Stock

486

$1,680.00

$816K

May 22, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

5,000

$1,586.43

$7.93M

May 22, 2026

Saria Tseng - Officer

Gift

Common Stock

200

$0.00^{footnote F1}

Footnote F1 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

2,929

$1,503.05^{footnote F10}

$4.40M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

3,769

$1,507.70^{footnote F11}

$5.68M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

551

$1,513.11^{footnote F12}

$834K

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

352

$1,518.15^{footnote F13}

$534K

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

130

$1,521.43^{footnote F14}

$198K

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

3,424

$1,462.61^{footnote F2}

$5.01M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

5,819

$1,467.62^{footnote F3}

$8.54M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

5,049

$1,472.84^{footnote F4}

$7.44M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

4,082

$1,476.96^{footnote F5}

$6.03M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

5,737

$1,482.51^{footnote F6}

$8.51M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

608

$1,499.46^{footnote F9}

$912K

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

6,688

$1,486.76^{footnote F7}

$9.94M

May 18, 2026

Michael Hsing - Officer

Open-market sale

Common Stock

862

$1,491.48^{footnote F8}

$1.29M

Footnote F2 (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 $1,459.96 to $1,464.86. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,464.97 to $1,469.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,469.95 to $1,474.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,474.95 to $1,479.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,479.99 to $1,484.93. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,484.95 to $1,489.73. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,490.17 to $1,494.10. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $,1495.74 to $1,500.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (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 $1,500.75 to $1,505.70. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F11 (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 $1,505.70 to $1,510.67. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F12 (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 $1,510.68 to $1,515.44. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F13 (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 $1,516.26 to $1,519.25. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F14 (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 $1,521.33 to $1,521.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

May 18, 2026

Robert W. Dean II - Officer

Open-market sale

Common Stock

4^{footnote F1}

$1,563.28

$6K

Footnote F1 (shares): The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

3,741^{footnote F1}

$1,550.36^{footnote F2}

$5.80M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

1,717^{footnote F1}

$1,557.48^{footnote F3}

$2.67M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

2,010^{footnote F1}

$1,562.01^{footnote F4}

$3.14M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

2,020^{footnote F1}

$1,567.15^{footnote F5}

$3.17M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

1,312^{footnote F1}

$1,571.49^{footnote F6}

$2.06M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

703^{footnote F1}

$1,577.75^{footnote F7}

$1.11M

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

447^{footnote F1}

$1,582.21^{footnote F8}

$707K

May 15, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

50^{footnote F1}

$1,585.51^{footnote F9}

$79K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025.
Footnote F2 (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 $1,549.62 to $1,554.55. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,554.59 to $1,559.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,559.61 to $1,564.59. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,564.75 to $1,569.67. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,569.78 to $1,574.53. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,574.9 to $1,579.7. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,579.97 to $1,584.43. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,585.17 to $1,586.76. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

May 13, 2026

Maurice Sciammas - Officer

Gift

Common Stock

1,563^{footnote F1}

$0.00

May 13, 2026

Maurice Sciammas - Officer

Gift

Common Stock

1,563^{footnote F2}

$0.00

Footnote F1 (shares): 1,563 shares were transferred from three GRATs, of which the reporting person is a Trustee, to the Sciammas Family Trust, of which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer.
Footnote F2 (shares): 1,563 shares were received by the Sciammas Family Trust, of which the reporting person is a Trustee, and transferred from three GRATs, of which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer.

May 13, 2026

Robert W. Dean II - Officer

Other

Common Stock

2,156

$0.00^{footnote F1}

Footnote F1 (price): The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the… Full note on SEC EDGAR

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

320

$1,559.88^{footnote F1}

$499K

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

814

$1,566.36^{footnote F2}

$1.28M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

1,078

$1,571.58^{footnote F3}

$1.69M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

834

$1,575.57^{footnote F4}

$1.31M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

1,879

$1,581.81^{footnote F5}

$2.97M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

2,587

$1,586.81^{footnote F6}

$4.11M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

1,355

$1,591.38^{footnote F7}

$2.16M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

2,619

$1,596.42^{footnote F8}

$4.18M

May 6, 2026

Eugen J. Elmiger

Open-market sale

Common Stock

514

$1,600.14^{footnote F9}

$822K

Footnote F1 (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 $1,557.08 to $1,561.97. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F2 (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 $1,563.39 to $1,568.28. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,568.78 to $1,573.40. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,573.86 to $1,578.73. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,578.85 to $1,583.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,583.79 to $1,588.65. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,588.80 to $1,593.63. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,593.95 to $1,598.78. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,598.99 to $1,602.68 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

May 6, 2026

Deming Xiao - Officer

Open-market sale

Common Stock

3,329

$1,648.38^{footnote F2}

$5.49M

May 6, 2026

Deming Xiao - Officer

Open-market sale

Common Stock

14,167

$1,652.80^{footnote F3}

$23.42M

May 6, 2026

Deming Xiao - Officer

Open-market sale

Common Stock

11,597

$1,657.93^{footnote F4}

$19.23M

May 6, 2026

Deming Xiao - Officer

Open-market sale

Common Stock

907

$1,661.38^{footnote F5}

$1.51M

Footnote F2 (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 $1,645.48 to $1,650.43. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,650.75 to $1,655.75. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,655.80 to $1,660.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,660.99 to $1,662 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

May 6, 2026

Eileen Wynne

Open-market sale

Common Stock

335

$1,582.68

$530K

May 5, 2026

Jeff Zhou

Open-market sale

Common Stock

514

$1,574.48

$809K

May 5, 2026

Jeff Zhou

Open-market sale

Common Stock

500

$1,600.00

$800K

May 6, 2026

Jeff Zhou

Open-market sale

Common Stock

500

$1,650.00

$825K

May 4, 2026

Maurice Sciammas - Officer

Open-market sale

Common Stock

30^{footnote F1}

$1,588.73

$48K

Footnote F1 (shares): This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025.

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

560^{footnote F1}

$1,266.48^{footnote F2}

$709K

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

360^{footnote F1}

$1,270.29^{footnote F3}

$457K

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

240^{footnote F1}

$1,279.55^{footnote F4}

$307K

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

120^{footnote F1}

$1,287.12^{footnote F5}

$154K

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

400^{footnote F1}

$1,292.08^{footnote F6}

$517K

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

800^{footnote F1}

$1,302.52^{footnote F7}

$1.04M

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

1,279^{footnote F1}

$1,308.30^{footnote F8}

$1.67M

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

4,244^{footnote F1}

$1,312.82^{footnote F9}

$5.57M

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

840^{footnote F1}

$1,319.25^{footnote F10}

$1.11M

Apr 8, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

120^{footnote F1}

$1,321.94^{footnote F11}

$159K

Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted on 11/28/2025.
Footnote F2 (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 $1,264.04 to $1,268.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,269.36 to $1,272.23. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,277.78 to $1,281.49. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,284.26 to $1,289.24. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,290.95 to $1,294.78. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,299.99 to $1,304.82. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,305.08 to $1,310.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,310.27 to $1,315.08. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F10 (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 $1,316.25 to $1,321.04. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F11 (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 $1,321.50 to $1,322.56. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

1,396^{footnote F1}

$1,179.50^{footnote F9}

$1.65M

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

244^{footnote F1}

$1,139.96^{footnote F2}

$278K

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

556^{footnote F1}

$1,144.42^{footnote F3}

$636K

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

480^{footnote F1}

$1,149.05^{footnote F4}

$552K

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

560^{footnote F1}

$1,159.62^{footnote F5}

$649K

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

684^{footnote F1}

$1,165.66^{footnote F6}

$797K

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

2,036^{footnote F1}

$1,170.38^{footnote F7}

$2.38M

Apr 6, 2026

Saria Tseng - Officer

Open-market sale

Common Stock

1,680^{footnote F1}

$1,176.35^{footnote F8}

$1.98M

Footnote F1 (shares): These transactions were made pursuant to a Rule 10b5-1 trading plan adopted on 11/28/2025.
Footnote F2 (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 $1,136.69 to $1,141.64. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F3 (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 $1,141.91 to $ 1,146.02. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F4 (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 $1,147.58 to $1,152.19. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F5 (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 $1,156.58 to $1,161.42. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F6 (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 $1,163.16 to $1,168.12. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F7 (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 $1,168.24 to $ 1,172.42. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F8 (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 $1,173.31 to $1,178.29. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR
Footnote F9 (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 $1,178.53 to $1,180.83. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange… Full note on SEC EDGAR

Filed

Filer

Relationship

Market value

Notice

Sep 28, 2026

Hsing Michael

Officer, Director

30,000

$40.35M

View on EDGAR

Aug 24, 2026

Robert W. Dean II

Officer

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Byron DonaldsRepublican, FL-19	Sale (partial)

Member

Type

Traded

Disclosed

Value range

Owner

Days to disclose

Filing

Byron DonaldsRepublican, FL-19

Sale (partial)