80/100B1,371.72
USD
-79.13
(-5.47%)
Market Open
Last updated: · Delayed 15 min
Fair valueNot reliable
Q4 FY2026 · Earnings report
EPS estimate 9.42Revenue estimate 1.35B
Q4 FY2026 · Earnings report
EPS estimate 9.42Revenue estimate 1.35B
Monolithic Power Systems executives and insider trading
Michael R. Hsing sold 224,923 shares for 280.72M USD in 53 sales over the last twelve months, the last on 28 September 2026, and bought none on the open market.
Over the last twelve months Monolithic Power Systems's insiders sold 528,847 shares for 643.57M USD in 251 sales on the open market, and bought 0 shares in 0 purchases.
Insiders over the last twelve months
- Insider sales
- 251
- Shares sold
- 528,847
- Value sold
- 643.57M USD
- Insider purchasesWhat is insider trading? Insider trading here means the legal trades that a company's executives, directors and large owners make in its shares, reported to the SEC on Form 4.
- 0
Insiders buying against sellingWhat is a Rule 10b5-1 trading plan? A Rule 10b5-1 plan lets an insider fix future trades in advance, while holding no inside information, so later trades follow the plan, not a new decision.
Bought on the market
Sold on the market
0
1 week
0
0
1 month
0
0
3 months
40.46M USD
0
6 months
160.75M USD
0
1 year
643.57M USD
0
2 years
851.17M USD
Sold, decided at the timeSold under a Rule 10b5-1 plan set in advance
Open-market purchases and sales reported on Form 4, by value. Awards, option exercises and shares withheld for tax are not counted. Whether a sale was under a Rule 10b5-1 plan is read from each Form 4 at the SEC (the box exists on filings since April 2023).
Executives and directors
The people who run the company and the directors who reported trades, with what each bought and sold on the open market over the last twelve months. The CEO first, then whoever traded most.
| Name | Position | Age | Shares sold (12 months) | Value sold (12 months) | Shares bought (12 months) | Last sale | Shares held after |
|---|---|---|---|---|---|---|---|
| Michael R. Hsing CEO | Founder, Chairman, President & Chief Executive Officer | 66 | 224,923 | 280.72M USD | — | 28 Sept 2026 | 847,668 |
| Saria Tseng | EVice President of Strategic Corporate Development, General Counsel & Corporate Secretary | 55 | 113,909 | 125.51M USD | — | 27 May 2026 | 142,218 |
| Maurice Sciammas | Executive Vice President of Worldwide Sales & Marketing | 66 | 89,611 | 101.19M USD | — | 3 Aug 2026 | 113,652 |
| Deming Xiao | Executive Vice President of Global Operations | 63 | 52,875 | 76.43M USD | — | 6 May 2026 | 232,630 |
| Theodore Blegen | EVP and CFO | — | 30,725 | 34.38M USD | — | 6 Feb 2026 | 82,353 |
| Eugen J Elmiger | Director | — | 12,000 | 19.02M USD | — | 6 May 2026 | 17,082 |
| Jeff Zhou | Director | — | 2,000 | 3.25M USD | — | 26 May 2026 | 3,800 |
| Victor K Lee | Director | — | 2,000 | 2.00M USD | — | 9 Feb 2026 | 27,756 |
| Eileen Wynne | Director | — | 335 | 530.20K USD | — | 6 May 2026 | 1,007 |
| Kuo Wei Herbert Chang | Director | — | 300 | 312.17K USD | — | 24 Aug 2026 | 515 |
| Robert W. Dean | VP & Chief Accounting Officer | 61 | 169 | 233.70K USD | — | 24 Aug 2026 | 7,094 |
| Arthur Lee | Finance Manager | — | — | — | — | — | — |
| Tony Balow | Vice President & Chief Financial Officer | 56 | — | — | — | — | — |
| Genevieve Cunningham | Senior Manager of Marketing Communications | — | — | — | — | — | — |
| Frank Anthony Iii Balow | Chief Financial Officer | — | — | — | — | — | 2,941 |
| Carintia Martinez | Director | — | — | — | — | — | 1,067 |
Insider sales and purchases by quarter
How many insider sales and purchases were reported each quarter.
Insider sales Insider purchases
Every insider transactionWhat is insider trading? Insider trading here means the legal trades that a company's executives, directors and large owners make in its shares, reported to the SEC on Form 4.
Insiders must report every trade in the company's shares to the SEC within two business days, on Form 4. Only purchases and sales are trades on the open market; awards, option exercises, shares withheld for tax and gifts come with pay, and the twelve-month totals leave them out.
| Date | Name | Transaction | Shares | Price | Value | Shares held after | Filing |
|---|---|---|---|---|---|---|---|
| 3 Nov 2026 | Maurice Sciammas | Gift | 13,000 | — | — | 113,652 | Form 4 |
| 3 Nov 2026 | Maurice Sciammas | Gift | 13,000 | — | — | 49,062 | Form 4 |
| 27 Oct 2026 | Frank Anthony Iii Balow | Other | — | — | — | 2,941 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 596 | 1,323.31 | 788.69K USD | 847,668 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 2,121 | 1,328.54 | 2.82M USD | 845,547 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 1,111 | 1,333.34 | 1.48M USD | 844,436 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 2,949 | 1,338.66 | 3.95M USD | 841,487 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 5,783 | 1,343.76 | 7.77M USD | 835,704 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 6,343 | 1,347.15 | 8.54M USD | 829,361 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 10,967 | 1,351.43 | 14.82M USD | 818,394 | Form 4 |
| 28 Sept 2026 | Michael R. Hsing | Sale | 130 | 1,356.94 | 176.40K USD | 818,264 | Form 4 |
| 31 Aug 2026 | Saria Tseng | Gift | 2,000 | — | — | 142,218 | Form 4 |
| 31 Aug 2026 | Saria Tseng | Gift | 2,000 | — | — | 2,000 | Form 4 |
| 24 Aug 2026 | Robert W. Dean | Sale | 32 | 1,297.72 | 41.53K USD | 7,094 | Form 4 |
| 24 Aug 2026 | Robert W. Dean | Other | 5 | — | — | 7,089 | Form 4 |
| 24 Aug 2026 | Kuo Wei Herbert Chang | Sale | 50 | 1,281.57 | 64.08K USD | 515 | Form 4 |
| 17 Aug 2026 | Robert W. Dean | Sale | 6 | 1,413.64 | 8.48K USD | 7,126 | Form 4 |
| 11 Aug 2026 | Kuo Wei Herbert Chang | Sale | 50 | 1,420.00 | 71.00K USD | 565 | Form 4 |
| 5 Aug 2026 | Robert W. Dean | Sale | 105 | 1,344.27 | 141.15K USD | 7,132 | Form 4 |
| 4 Aug 2026 | Maurice Sciammas | Gift | 25,000 | — | — | 126,644 | Form 4 |
| 4 Aug 2026 | Maurice Sciammas | Gift | 25,000 | — | — | 36,062 | Form 4 |
| 3 Aug 2026 | Maurice Sciammas | Sale | 30 | 1,343.94 | 40.32K USD | 1,119 | Form 4 |
| 25 Jul 2026 | Robert W. Dean | Award | 1,359 | — | — | 7,237 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 527 | 1,314.03 | 692.49K USD | 166,117 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 274 | 1,318.42 | 361.25K USD | 165,843 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 409 | 1,323.93 | 541.49K USD | 165,434 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 464 | 1,329.30 | 616.80K USD | 164,970 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 776 | 1,334.59 | 1.04M USD | 164,194 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 1,460 | 1,339.59 | 1.96M USD | 162,734 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 1,864 | 1,344.16 | 2.51M USD | 160,870 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 1,506 | 1,348.91 | 2.03M USD | 159,364 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 5,640 | 1,352.95 | 7.63M USD | 153,724 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 50 | 1,359.36 | 67.97K USD | 153,674 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 240 | 1,369.18 | 328.60K USD | 153,434 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 472 | 1,375.47 | 649.22K USD | 152,962 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 418 | 1,378.73 | 576.31K USD | 152,544 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 410 | 1,384.11 | 567.49K USD | 152,134 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 50 | 1,388.19 | 69.41K USD | 152,084 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 213 | 1,396.16 | 297.38K USD | 151,871 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 117 | 1,400.45 | 163.85K USD | 151,754 | Form 4 |
| 15 Jul 2026 | Maurice Sciammas | Sale | 110 | 1,405.71 | 154.63K USD | 151,644 | Form 4 |
| 1 Jul 2026 | Maurice Sciammas | Sale | 30 | 1,351.61 | 40.55K USD | 1,149 | Form 4 |
| 1 Jun 2026 | Maurice Sciammas | Sale | 30 | 1,533.95 | 46.02K USD | 1,179 | Form 4 |
| 29 May 2026 | Maurice Sciammas | Gift | 12,472 | — | — | 12,625 | Form 4 |
| 27 May 2026 | Saria Tseng | Sale | 7,565 | 1,700.00 | 12.86M USD | 144,218 | Form 4 |
| 26 May 2026 | Robert W. Dean | Sale | 22 | 1,649.56 | 36.29K USD | 5,878 | Form 4 |
| 26 May 2026 | Jeff Zhou | Sale | 486 | 1,680.00 | 816.48K USD | 3,800 | Form 4 |
| 22 May 2026 | Saria Tseng | Gift | 200 | — | — | 156,783 | Form 4 |
| 22 May 2026 | Saria Tseng | Sale | 5,000 | 1,586.43 | 7.93M USD | 151,783 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 3,424 | 1,462.61 | 5.01M USD | 884,839 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 5,819 | 1,467.62 | 8.54M USD | 879,020 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 5,049 | 1,472.84 | 7.44M USD | 873,971 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 4,082 | 1,476.96 | 6.03M USD | 869,889 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 5,737 | 1,482.51 | 8.51M USD | 864,152 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 6,688 | 1,486.76 | 9.94M USD | 857,464 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 862 | 1,491.48 | 1.29M USD | 856,602 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 608 | 1,499.46 | 911.67K USD | 855,994 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 2,929 | 1,503.05 | 4.40M USD | 853,065 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 3,769 | 1,507.70 | 5.68M USD | 849,296 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 551 | 1,513.11 | 833.72K USD | 848,745 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 352 | 1,518.15 | 534.39K USD | 848,393 | Form 4 |
| 18 May 2026 | Michael R. Hsing | Sale | 130 | 1,521.43 | 197.79K USD | 848,263 | Form 4 |
| 18 May 2026 | Robert W. Dean | Sale | 4 | 1,563.28 | 6.25K USD | 5,900 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 3,741 | 1,550.36 | 5.80M USD | 174,903 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 1,717 | 1,557.48 | 2.67M USD | 173,186 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 2,010 | 1,562.01 | 3.14M USD | 171,176 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 2,020 | 1,567.15 | 3.17M USD | 169,156 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 1,312 | 1,571.49 | 2.06M USD | 167,844 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 703 | 1,577.75 | 1.11M USD | 167,141 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 447 | 1,582.21 | 707.25K USD | 166,694 | Form 4 |
| 15 May 2026 | Maurice Sciammas | Sale | 50 | 1,585.51 | 79.28K USD | 166,644 | Form 4 |
| 13 May 2026 | Maurice Sciammas | Gift | 1,563 | — | — | 51,023 | Form 4 |
| 13 May 2026 | Maurice Sciammas | Gift | 1,563 | — | — | 25,097 | Form 4 |
| 13 May 2026 | Robert W. Dean | Other | 2,156 | — | — | 5,904 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 320 | 1,559.88 | 499.16K USD | 17,082 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 814 | 1,566.36 | 1.28M USD | 16,268 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 1,078 | 1,571.58 | 1.69M USD | 15,190 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 834 | 1,575.57 | 1.31M USD | 14,356 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 1,879 | 1,581.81 | 2.97M USD | 12,477 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 2,587 | 1,586.81 | 4.11M USD | 9,890 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 1,355 | 1,591.38 | 2.16M USD | 8,535 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 2,619 | 1,596.42 | 4.18M USD | 5,916 | Form 4 |
| 6 May 2026 | Eugen J Elmiger | Sale | 514 | 1,600.14 | 822.47K USD | 5,402 | Form 4 |
| 6 May 2026 | Deming Xiao | Sale | 3,329 | 1,648.38 | 5.49M USD | 232,630 | Form 4 |
| 6 May 2026 | Deming Xiao | Sale | 14,167 | 1,652.80 | 23.42M USD | 218,463 | Form 4 |
| 6 May 2026 | Deming Xiao | Sale | 11,597 | 1,657.93 | 19.23M USD | 206,866 | Form 4 |
| 6 May 2026 | Deming Xiao | Sale | 907 | 1,661.38 | 1.51M USD | 205,959 | Form 4 |
| 6 May 2026 | Eileen Wynne | Sale | 335 | 1,582.68 | 530.20K USD | 1,007 | Form 4 |
| 6 May 2026 | Jeff Zhou | Sale | 500 | 1,650.00 | 825.00K USD | 4,286 | Form 4 |
| 5 May 2026 | Jeff Zhou | Sale | 514 | 1,574.48 | 809.28K USD | 5,286 | Form 4 |
| 5 May 2026 | Jeff Zhou | Sale | 500 | 1,600.00 | 800.00K USD | 4,786 | Form 4 |
| 5 May 2026 | Maurice Sciammas | Sale | 380 | 1,583.81 | 601.85K USD | 919 | Form 4 |
| 4 May 2026 | Maurice Sciammas | Sale | 30 | 1,588.73 | 47.66K USD | 1,209 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 560 | 1,266.48 | 709.23K USD | 165,386 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 360 | 1,270.29 | 457.30K USD | 165,026 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 240 | 1,279.55 | 307.09K USD | 164,786 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 120 | 1,287.12 | 154.45K USD | 164,666 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 400 | 1,292.08 | 516.83K USD | 164,266 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 800 | 1,302.52 | 1.04M USD | 163,466 | Form 4 |
| 8 Apr 2026 | Saria Tseng | Sale | 1,279 | 1,308.30 | 1.67M USD | 162,187 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 244 | 1,139.96 | 278.15K USD | 173,338 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 556 | 1,144.42 | 636.30K USD | 172,782 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 480 | 1,149.05 | 551.54K USD | 172,302 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 560 | 1,159.62 | 649.39K USD | 171,742 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 684 | 1,165.66 | 797.31K USD | 171,058 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 2,036 | 1,170.38 | 2.38M USD | 169,022 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 1,680 | 1,176.35 | 1.98M USD | 167,342 | Form 4 |
| 6 Apr 2026 | Saria Tseng | Sale | 1,396 | 1,179.50 | 1.65M USD | 165,946 | Form 4 |
| 1 Apr 2026 | Saria Tseng | Sale | 576 | 1,131.24 | 651.59K USD | 174,406 | Form 4 |
| 1 Apr 2026 | Saria Tseng | Sale | 184 | 1,132.15 | 208.32K USD | 174,222 | Form 4 |
| 1 Apr 2026 | Saria Tseng | Sale | 160 | 1,134.14 | 181.46K USD | 174,062 | Form 4 |
| 1 Apr 2026 | Saria Tseng | Sale | 188 | 1,135.91 | 213.55K USD | 173,874 | Form 4 |
| 1 Apr 2026 | Saria Tseng | Sale | 292 | 1,136.99 | 332.00K USD | 173,582 | Form 4 |
| 1 Apr 2026 | Maurice Sciammas | Sale | 30 | 1,116.44 | 33.49K USD | 1,239 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 5,154 | 1,000.81 | 5.16M USD | 195,502 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 9,080 | 1,005.18 | 9.13M USD | 186,422 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 3,360 | 1,009.63 | 3.39M USD | 183,062 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 3,194 | 1,017.22 | 3.25M USD | 179,868 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 2,200 | 1,023.00 | 2.25M USD | 177,668 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 2,440 | 1,029.21 | 2.51M USD | 175,228 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 166 | 1,035.60 | 171.91K USD | 175,062 | Form 4 |
| 30 Mar 2026 | Saria Tseng | Sale | 80 | 1,041.12 | 83.29K USD | 174,982 | Form 4 |
| 20 Mar 2026 | Maurice Sciammas | Sale | 30 | 1,095.07 | 32.85K USD | 1,269 | Form 4 |
| 27 Feb 2026 | Robert W. Dean | Other | — | — | — | 8,060 | Form 4 |
| 27 Feb 2026 | Robert W. Dean | Other | — | — | — | 65 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 12,731 | 1,155.71 | 14.71M USD | 908,503 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 4,992 | 1,159.84 | 5.79M USD | 903,511 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 4,001 | 1,164.92 | 4.66M USD | 899,510 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 2,076 | 1,168.80 | 2.43M USD | 897,434 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 200 | 1,173.39 | 234.68K USD | 897,234 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 480 | 1,180.79 | 566.78K USD | 896,754 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 160 | 1,188.23 | 190.12K USD | 896,594 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 600 | 1,194.34 | 716.60K USD | 895,994 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 1,440 | 1,200.81 | 1.73M USD | 894,554 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 3,640 | 1,205.82 | 4.39M USD | 890,914 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 1,240 | 1,210.11 | 1.50M USD | 889,674 | Form 4 |
| 12 Feb 2026 | Michael R. Hsing | Sale | 1,440 | 1,217.12 | 1.75M USD | 888,234 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 363 | 1,158.71 | 420.61K USD | 953,871 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 1,366 | 1,163.71 | 1.59M USD | 952,505 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 1,533 | 1,167.62 | 1.79M USD | 950,972 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 1,987 | 1,172.92 | 2.33M USD | 948,985 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 2,799 | 1,177.67 | 3.30M USD | 946,186 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 1,542 | 1,182.82 | 1.82M USD | 944,644 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 2,104 | 1,188.17 | 2.50M USD | 942,540 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 6,079 | 1,192.67 | 7.25M USD | 936,461 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 14,578 | 1,197.20 | 17.45M USD | 921,883 | Form 4 |
| 11 Feb 2026 | Michael R. Hsing | Sale | 649 | 1,202.28 | 780.28K USD | 921,234 | Form 4 |
| 11 Feb 2026 | Maurice Sciammas | Sale | 200 | 1,179.98 | 235.99K USD | 1,299 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 4,302 | 1,132.01 | 4.87M USD | 983,932 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 6,325 | 1,136.75 | 7.19M USD | 977,607 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 16,080 | 1,141.88 | 18.36M USD | 961,527 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 3,864 | 1,145.90 | 4.43M USD | 957,663 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 1,215 | 1,151.11 | 1.40M USD | 956,448 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 694 | 1,154.96 | 801.54K USD | 955,754 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 360 | 1,161.41 | 418.11K USD | 955,394 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 880 | 1,176.04 | 1.03M USD | 954,514 | Form 4 |
| 10 Feb 2026 | Michael R. Hsing | Sale | 280 | 1,197.26 | 335.23K USD | 954,234 | Form 4 |
| 9 Feb 2026 | Victor K Lee | Sale | 400 | 1,212.16 | 484.86K USD | 27,756 | Form 4 |
| 6 Feb 2026 | Deming Xiao | Sale | 22,875 | 1,171.16 | 26.79M USD | 235,932 | Form 4 |
| 6 Feb 2026 | Saria Tseng | Sale | 22,875 | 1,171.16 | 26.79M USD | 200,626 | Form 4 |
| 6 Feb 2026 | Maurice Sciammas | Sale | 22,875 | 1,171.16 | 26.79M USD | 178,625 | Form 4 |
| 6 Feb 2026 | Theodore Blegen | Sale | 21,725 | 1,171.16 | 25.44M USD | 82,353 | Form 4 |
| 6 Feb 2026 | Michael R. Hsing | Sale | 54,923 | 1,171.16 | 64.32M USD | 988,234 | Form 4 |
| 3 Feb 2026 | Eileen Wynne | Award | 189 | — | — | 1,342 | Form 4 |
| 3 Feb 2026 | Jeff Zhou | Award | 189 | — | — | 5,800 | Form 4 |
| 3 Feb 2026 | Kuo Wei Herbert Chang | Award | 189 | — | — | 615 | Form 4 |
| 3 Feb 2026 | Eugen J Elmiger | Award | 189 | — | — | 17,402 | Form 4 |
| 3 Feb 2026 | Victor K Lee | Award | 189 | — | — | 28,156 | Form 4 |
| 3 Feb 2026 | Carintia Martinez | Award | 189 | — | — | 1,067 | Form 4 |
| 3 Feb 2026 | Deming Xiao | Award | 57,170 | — | — | 258,807 | Form 4 |
| 3 Feb 2026 | Theodore Blegen | Award | 38,745 | — | — | 104,078 | Form 4 |
| 3 Feb 2026 | Saria Tseng | Award | 57,170 | — | — | 223,501 | Form 4 |
| 3 Feb 2026 | Michael R. Hsing | Award | 136,825 | — | — | 1,043,157 | Form 4 |
| 3 Feb 2026 | Maurice Sciammas | Award | 57,170 | — | — | 201,500 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 220 | 1,110.58 | 244.33K USD | 68,112 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 40 | 1,117.11 | 44.68K USD | 68,072 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 80 | 1,120.77 | 89.66K USD | 67,992 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 40 | 1,122.56 | 44.90K USD | 67,952 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 200 | 1,126.58 | 225.32K USD | 67,752 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 80 | 1,127.39 | 90.19K USD | 67,672 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 240 | 1,128.43 | 270.82K USD | 67,432 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 240 | 1,129.28 | 271.03K USD | 67,192 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 320 | 1,130.48 | 361.75K USD | 66,872 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 198 | 1,131.70 | 224.08K USD | 66,674 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 322 | 1,132.67 | 364.72K USD | 66,352 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 379 | 1,133.47 | 429.59K USD | 65,973 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 241 | 1,134.41 | 273.39K USD | 65,732 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 120 | 1,135.49 | 136.26K USD | 65,612 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 120 | 1,136.35 | 136.36K USD | 65,492 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 80 | 1,137.81 | 91.02K USD | 65,412 | Form 4 |
| 2 Feb 2026 | Theodore Blegen | Sale | 80 | 1,139.49 | 91.16K USD | 65,333 | Form 4 |
| 2 Jan 2026 | Victor K Lee | Sale | 600 | 930.86 | 558.52K USD | 27,967 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 80 | 927.61 | 74.21K USD | 71,252 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 194 | 930.86 | 180.59K USD | 71,058 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 80 | 933.64 | 74.69K USD | 70,978 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 40 | 934.74 | 37.39K USD | 70,938 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 80 | 935.33 | 74.83K USD | 70,858 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 120 | 936.50 | 112.38K USD | 70,738 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 460 | 938.52 | 431.72K USD | 70,278 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 117 | 939.75 | 109.95K USD | 70,161 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 40 | 940.03 | 37.60K USD | 70,121 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 406 | 941.60 | 382.29K USD | 69,715 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 74 | 942.42 | 69.74K USD | 69,641 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 539 | 943.71 | 508.66K USD | 69,102 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 650 | 944.35 | 613.83K USD | 68,452 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 40 | 945.00 | 37.80K USD | 68,412 | Form 4 |
| 2 Jan 2026 | Theodore Blegen | Sale | 80 | 946.62 | 75.73K USD | 68,332 | Form 4 |
| 24 Dec 2025 | Saria Tseng | Gift | 1,000 | — | — | 166,331 | Form 4 |
| 24 Dec 2025 | Saria Tseng | Gift | 1,000 | — | — | 1,000 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 197 | 949.70 | 187.09K USD | 29,370 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 280 | 950.64 | 266.18K USD | 29,090 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 160 | 951.60 | 152.26K USD | 28,930 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 83 | 952.37 | 79.05K USD | 28,847 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 200 | 953.70 | 190.74K USD | 28,647 | Form 4 |
| 24 Dec 2025 | Victor K Lee | Sale | 80 | 955.08 | 76.41K USD | 28,567 | Form 4 |
| 9 Dec 2025 | Michael R. Hsing | Gift | 12,337 | — | — | 906,332 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 40 | 899.73 | 35.99K USD | 74,292 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 40 | 900.88 | 36.04K USD | 74,252 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 80 | 901.88 | 72.15K USD | 74,172 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 40 | 902.31 | 36.09K USD | 74,132 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 120 | 904.38 | 108.53K USD | 74,012 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 80 | 906.84 | 72.55K USD | 73,932 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 80 | 907.59 | 72.61K USD | 73,852 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 480 | 908.69 | 436.17K USD | 73,372 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 1,984 | 909.00 | 1.80M USD | 71,388 | Form 4 |
| 1 Dec 2025 | Theodore Blegen | Sale | 56 | 911.59 | 51.05K USD | 71,332 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 240 | 922.78 | 221.47K USD | 187,091 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 1,200 | 923.54 | 1.11M USD | 185,891 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 1,327 | 924.32 | 1.23M USD | 184,564 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 1,126 | 925.55 | 1.04M USD | 183,438 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 10,360 | 926.02 | 9.59M USD | 173,078 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 1,845 | 927.41 | 1.71M USD | 171,233 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 984 | 928.60 | 913.74K USD | 170,249 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 2,238 | 929.29 | 2.08M USD | 168,011 | Form 4 |
| 26 Nov 2025 | Saria Tseng | Sale | 680 | 930.48 | 632.73K USD | 167,331 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 385 | 894.54 | 344.40K USD | 206,946 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 1,625 | 895.63 | 1.46M USD | 205,321 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 2,066 | 896.37 | 1.85M USD | 203,255 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 754 | 897.54 | 676.75K USD | 202,501 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 145 | 898.38 | 130.27K USD | 202,356 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 320 | 899.37 | 287.80K USD | 202,036 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 346 | 900.41 | 311.54K USD | 201,690 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 880 | 901.58 | 793.39K USD | 200,810 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 120 | 902.07 | 108.25K USD | 200,690 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 160 | 903.54 | 144.57K USD | 200,530 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 200 | 904.39 | 180.88K USD | 200,330 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 160 | 905.32 | 144.85K USD | 200,170 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 272 | 906.33 | 246.52K USD | 199,898 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 10,200 | 907.21 | 9.25M USD | 189,698 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 888 | 908.49 | 806.74K USD | 188,810 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 556 | 909.35 | 505.60K USD | 188,254 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 359 | 910.42 | 326.84K USD | 187,895 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 324 | 911.92 | 295.46K USD | 187,571 | Form 4 |
| 25 Nov 2025 | Saria Tseng | Sale | 240 | 912.30 | 218.95K USD | 187,331 | Form 4 |
| 25 Nov 2025 | Kuo Wei Herbert Chang | Sale | 100 | 896.97 | 89.70K USD | 426 | Form 4 |
| 24 Nov 2025 | Maurice Sciammas | Sale | 3,976 | 895.23 | 3.56M USD | 144,330 | Form 4 |
| 21 Nov 2025 | Kuo Wei Herbert Chang | Sale | 100 | 873.97 | 87.40K USD | 526 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 431 | 875.26 | 377.24K USD | 175,841 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 940 | 876.62 | 824.02K USD | 174,901 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,976 | 877.45 | 1.73M USD | 172,925 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,854 | 878.55 | 1.63M USD | 171,071 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,966 | 879.54 | 1.73M USD | 169,105 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 3,776 | 880.58 | 3.33M USD | 165,329 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 2,469 | 881.42 | 2.18M USD | 162,860 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 3,344 | 882.51 | 2.95M USD | 159,516 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 6,513 | 883.50 | 5.75M USD | 153,003 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 2,149 | 884.44 | 1.90M USD | 150,854 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,738 | 885.10 | 1.54M USD | 149,116 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 810 | 886.01 | 717.67K USD | 148,306 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 240 | 862.58 | 207.02K USD | 183,066 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 160 | 863.86 | 138.22K USD | 182,906 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 40 | 865.89 | 34.64K USD | 182,866 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 339 | 866.19 | 293.64K USD | 182,527 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 699 | 867.57 | 606.43K USD | 181,828 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 723 | 868.42 | 627.87K USD | 181,105 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,842 | 869.39 | 1.60M USD | 179,263 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 320 | 870.36 | 278.52K USD | 178,943 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 220 | 871.45 | 191.72K USD | 178,723 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 574 | 872.80 | 500.99K USD | 178,149 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 1,146 | 873.78 | 1.00M USD | 177,003 | Form 4 |
| 19 Nov 2025 | Maurice Sciammas | Sale | 731 | 874.50 | 639.26K USD | 176,272 | Form 4 |
| 13 Nov 2025 | Maurice Sciammas | Gift | 4,530 | — | — | 49,460 | Form 4 |
| 13 Nov 2025 | Maurice Sciammas | Gift | 4,530 | — | — | 26,660 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 403 | 957.58 | 385.90K USD | 955,266 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 2,799 | 958.34 | 2.68M USD | 952,467 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 440 | 959.36 | 422.12K USD | 952,027 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 403 | 960.45 | 387.06K USD | 951,624 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 1,904 | 961.63 | 1.83M USD | 949,720 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 2,817 | 962.61 | 2.71M USD | 946,903 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 3,552 | 963.47 | 3.42M USD | 943,351 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 3,264 | 964.47 | 3.15M USD | 940,087 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 5,619 | 965.50 | 5.43M USD | 934,468 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 6,562 | 966.45 | 6.34M USD | 927,906 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 3,024 | 967.41 | 2.93M USD | 924,882 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 2,072 | 968.37 | 2.01M USD | 922,810 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 975 | 969.62 | 945.38K USD | 921,835 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 728 | 970.29 | 706.37K USD | 921,107 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 59 | 971.81 | 57.34K USD | 921,048 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 461 | 972.78 | 448.45K USD | 920,587 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 298 | 973.73 | 290.17K USD | 920,289 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 633 | 979.59 | 620.08K USD | 919,656 | Form 4 |
| 12 Nov 2025 | Michael R. Hsing | Sale | 987 | 980.06 | 967.32K USD | 918,669 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 80 | 951.69 | 76.14K USD | 995,589 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 1,516 | 952.62 | 1.44M USD | 994,073 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 2,927 | 953.69 | 2.79M USD | 991,146 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 7,934 | 954.61 | 7.57M USD | 983,212 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 4,056 | 955.46 | 3.88M USD | 979,156 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 797 | 956.50 | 762.33K USD | 978,359 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 1,020 | 957.71 | 976.86K USD | 977,339 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 2,500 | 958.59 | 2.40M USD | 974,839 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 4,010 | 959.45 | 3.85M USD | 970,829 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 2,734 | 960.45 | 2.63M USD | 968,095 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 3,900 | 961.47 | 3.75M USD | 964,195 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 4,172 | 962.57 | 4.02M USD | 960,023 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 1,894 | 963.41 | 1.82M USD | 958,129 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 739 | 964.38 | 712.68K USD | 957,390 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 321 | 965.44 | 309.91K USD | 957,069 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 1,246 | 966.30 | 1.20M USD | 955,823 | Form 4 |
| 11 Nov 2025 | Michael R. Hsing | Sale | 154 | 967.15 | 148.94K USD | 955,669 | Form 4 |
| 5 Nov 2025 | Maurice Sciammas | Sale | 200 | 986.81 | 197.36K USD | 1,299 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 204 | 1,013.62 | 206.78K USD | 77,128 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 135 | 1,014.47 | 136.95K USD | 76,993 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 80 | 1,016.51 | 81.32K USD | 76,913 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 6 | 1,017.78 | 6.11K USD | 76,907 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 180 | 1,018.01 | 183.24K USD | 76,727 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 181 | 1,019.49 | 184.53K USD | 76,546 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 160 | 1,020.30 | 163.25K USD | 76,386 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 168 | 1,021.28 | 171.58K USD | 76,218 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 40 | 1,022.28 | 40.89K USD | 76,178 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 291 | 1,023.32 | 297.79K USD | 75,887 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 208 | 1,024.86 | 213.17K USD | 75,679 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 43 | 1,025.91 | 44.11K USD | 75,636 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 200 | 1,027.49 | 205.50K USD | 75,436 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 240 | 1,028.43 | 246.82K USD | 75,196 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 246 | 1,029.45 | 253.24K USD | 74,950 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 210 | 1,030.00 | 216.30K USD | 74,740 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 17 | 1,031.86 | 17.54K USD | 74,723 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 184 | 1,032.07 | 189.90K USD | 74,539 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 80 | 1,033.00 | 82.64K USD | 74,459 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 40 | 1,034.99 | 41.40K USD | 74,419 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 40 | 1,035.25 | 41.41K USD | 74,379 | Form 4 |
| 3 Nov 2025 | Theodore Blegen | Sale | 47 | 1,038.41 | 48.81K USD | 74,332 | Form 4 |
| 30 Oct 2025 | Michael R. Hsing | Shares withheld for tax | 121,918 | 1,096.63 | 133.70M USD | 995,669 | Form 4 |
| 30 Oct 2025 | Theodore Blegen | Shares withheld for tax | 48,298 | 1,096.63 | 52.97M USD | 77,332 | Form 4 |
| 30 Oct 2025 | Saria Tseng | Shares withheld for tax | 54,543 | 1,096.63 | 59.81M USD | 207,331 | Form 4 |
| 30 Oct 2025 | Maurice Sciammas | Shares withheld for tax | 54,543 | 1,096.63 | 59.81M USD | 183,306 | Form 4 |
| 30 Oct 2025 | Deming Xiao | Shares withheld for tax | 54,543 | 1,096.63 | 59.81M USD | 201,637 | Form 4 |
| 25 Oct 2025 | Saria Tseng | Award | 135,520 | — | — | 261,874 | Form 4 |
| 25 Oct 2025 | Theodore Blegen | Award | 87,690 | — | — | 125,630 | Form 4 |
| 25 Oct 2025 | Michael R. Hsing | Award | 302,920 | — | — | 1,117,587 | Form 4 |
| 25 Oct 2025 | Deming Xiao | Award | 135,520 | — | — | 256,180 | Form 4 |
| 25 Oct 2025 | Maurice Sciammas | Award | 135,520 | — | — | 237,849 | Form 4 |
| 24 Oct 2025 | Saria Tseng | Sale | 1,300 | 1,087.62 | 1.41M USD | 126,354 | Form 4 |
| 16 Oct 2025 | Saria Tseng | Sale | 1,499 | 1,021.26 | 1.53M USD | 128,967 | Form 4 |
| 16 Oct 2025 | Saria Tseng | Sale | 1,313 | 1,030.81 | 1.35M USD | 127,654 | Form 4 |
| 15 Oct 2025 | Saria Tseng | Sale | 14,028 | 1,016.18 | 14.25M USD | 130,466 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 6 | 902.61 | 5.42K USD | 40,933 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 40 | 903.82 | 36.15K USD | 40,893 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 60 | 904.00 | 54.24K USD | 40,833 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 115 | 905.37 | 104.12K USD | 40,718 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 250 | 907.36 | 226.84K USD | 40,468 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 80 | 909.52 | 72.76K USD | 40,388 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 65 | 911.27 | 59.23K USD | 40,323 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 676 | 912.73 | 617.01K USD | 39,647 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 138 | 913.87 | 126.11K USD | 39,509 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 390 | 914.71 | 356.74K USD | 39,119 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 440 | 915.43 | 402.79K USD | 38,679 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 580 | 916.37 | 531.49K USD | 38,099 | Form 4 |
| 1 Oct 2025 | Theodore Blegen | Sale | 160 | 917.17 | 146.75K USD | 37,940 | Form 4 |
| 18 Sept 2025 | Carintia Martinez | Sale | 1,400 | 900.00 | 1.26M USD | 878 | Form 4 |
| 18 Sept 2025 | Saria Tseng | Sale | 14,510 | 914.45 | 13.27M USD | 144,494 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 803.43 | 80.34K USD | 43,839 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 804.64 | 80.46K USD | 43,739 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 200 | 806.57 | 161.31K USD | 43,539 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 808.53 | 80.85K USD | 43,439 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 500 | 811.45 | 405.73K USD | 42,939 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 812.84 | 81.28K USD | 42,839 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 813.09 | 81.31K USD | 42,739 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 200 | 814.75 | 162.95K USD | 42,539 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 400 | 815.39 | 326.16K USD | 42,139 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 574 | 816.47 | 468.65K USD | 41,565 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 100 | 818.44 | 81.84K USD | 41,465 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 200 | 820.70 | 164.14K USD | 41,265 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 200 | 821.75 | 164.35K USD | 41,065 | Form 4 |
| 2 Sept 2025 | Theodore Blegen | Sale | 126 | 822.59 | 103.65K USD | 40,939 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 800 | 844.25 | 675.40K USD | 20,413 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 700 | 845.54 | 591.88K USD | 19,713 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 700 | 846.66 | 592.66K USD | 19,013 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 900 | 847.30 | 762.57K USD | 18,113 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 100 | 848.03 | 84.80K USD | 18,013 | Form 4 |
| 29 Aug 2025 | Eugen J Elmiger | Sale | 800 | 849.41 | 679.53K USD | 17,213 | Form 4 |
| 27 Aug 2025 | Jeff Zhou | Sale | 193 | 870.00 | 167.91K USD | 5,611 | Form 4 |
| 19 Aug 2025 | Maurice Sciammas | Gift | 1,499 | — | — | 12,228 | Form 4 |
| 19 Aug 2025 | Maurice Sciammas | Gift | 1,499 | — | — | 1,499 | Form 4 |
| 19 Aug 2025 | Maurice Sciammas | Gift | 1,000 | — | — | 1,000 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 2,603 | 825.69 | 2.15M USD | 832,295 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 2,555 | 826.64 | 2.11M USD | 829,740 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 3,878 | 827.72 | 3.21M USD | 825,862 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 396 | 828.64 | 328.14K USD | 825,466 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 4,101 | 829.45 | 3.40M USD | 821,365 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 2,100 | 830.46 | 1.74M USD | 819,265 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 1,953 | 831.57 | 1.62M USD | 817,312 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 1,510 | 832.57 | 1.26M USD | 815,802 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 535 | 833.37 | 445.85K USD | 815,267 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 200 | 834.92 | 166.98K USD | 815,067 | Form 4 |
| 15 Aug 2025 | Michael R. Hsing | Sale | 400 | 836.40 | 334.56K USD | 814,667 | Form 4 |
| 13 Aug 2025 | Jeff Zhou | Sale | 400 | 850.00 | 340.00K USD | 5,804 | Form 4 |
| 12 Aug 2025 | Jeff Zhou | Sale | 200 | 830.00 | 166.00K USD | 6,204 | Form 4 |
| 11 Aug 2025 | Deming Xiao | Gift | 945 | — | — | 120,660 | Form 4 |
| 11 Aug 2025 | Deming Xiao | Gift | 945 | — | — | 4,336 | Form 4 |
| 6 Aug 2025 | Maurice Sciammas | Gift | 4,836 | — | — | 44,930 | Form 4 |
| 6 Aug 2025 | Maurice Sciammas | Gift | 2,000 | — | — | 13,727 | Form 4 |
| 6 Aug 2025 | Maurice Sciammas | Gift | 1,418 | — | — | 9,481 | Form 4 |
| 1 Aug 2025 | Deming Xiao | Sale | 39,999 | 780.00 | 31.20M USD | 121,605 | Form 4 |
| 1 Aug 2025 | Theodore Blegen | Sale | 3,000 | 750.00 | 2.25M USD | 43,939 | Form 4 |
| 1 Jul 2025 | Theodore Blegen | Sale | 6,000 | 750.00 | 4.50M USD | 46,939 | Form 4 |
| 28 May 2025 | Maurice Sciammas | Gift | 1,499 | — | — | 15,727 | Form 4 |
| 28 May 2025 | Maurice Sciammas | Gift | 1,499 | — | — | 1,499 | Form 4 |
| 13 May 2025 | Kuo Wei Herbert Chang | Sale | 50 | 738.00 | 36.90K USD | 626 | Form 4 |
| 12 May 2025 | Kuo Wei Herbert Chang | Sale | 100 | 698.00 | 69.80K USD | 676 | Form 4 |
| 12 May 2025 | Maurice Sciammas | Sale | 12,000 | 701.00 | 8.41M USD | 4,015 | Form 4 |
| 9 May 2025 | Maurice Sciammas | Gift | 1,878 | — | — | 40,094 | Form 4 |
| 9 May 2025 | Maurice Sciammas | Gift | 1,878 | — | — | 17,226 | Form 4 |
| 8 May 2025 | Kuo Wei Herbert Chang | Sale | 100 | 650.00 | 65.00K USD | 776 | Form 4 |
| 18 Feb 2025 | Maurice Sciammas | Gift | 1,102 | — | — | 38,216 | Form 4 |
| 18 Feb 2025 | Maurice Sciammas | Gift | 1,102 | — | — | 19,104 | Form 4 |
| 18 Feb 2025 | Michael R. Hsing | Sale | 5,200 | 700.00 | 3.64M USD | 834,898 | Form 4 |
| 11 Feb 2025 | Maurice Sciammas | Gift | 5,050 | — | — | 37,114 | Form 4 |
| 11 Feb 2025 | Maurice Sciammas | Gift | 2,525 | — | — | 10,899 | Form 4 |
| 10 Feb 2025 | Deming Xiao | Sale | 662 | 717.10 | 474.72K USD | 161,577 | Form 4 |
| 10 Feb 2025 | Saria Tseng | Sale | 663 | 717.10 | 475.44K USD | 158,977 | Form 4 |
| 10 Feb 2025 | Maurice Sciammas | Sale | 662 | 717.10 | 474.72K USD | 102,301 | Form 4 |
| 10 Feb 2025 | Michael R. Hsing | Sale | 2,594 | 717.10 | 1.86M USD | 840,071 | Form 4 |
| 10 Feb 2025 | Theodore Blegen | Sale | 532 | 717.10 | 381.50K USD | 52,912 | Form 4 |
| 7 Feb 2025 | Michael R. Hsing | Sale | 11,964 | 700.00 | 8.37M USD | 842,665 | Form 4 |
| 7 Feb 2025 | Maurice Sciammas | Sale | 3,941 | 701.03 | 2.76M USD | 19,074 | Form 4 |
| 7 Feb 2025 | Maurice Sciammas | Sale | 1,600 | 702.46 | 1.12M USD | 17,474 | Form 4 |
| 7 Feb 2025 | Maurice Sciammas | Sale | 1,259 | 703.88 | 886.18K USD | 16,215 | Form 4 |
| 7 Feb 2025 | Maurice Sciammas | Sale | 200 | 704.92 | 140.98K USD | 16,015 | Form 4 |
| 4 Feb 2025 | Victor K Lee | Award | 335 | — | — | 29,567 | Form 4 |
| 4 Feb 2025 | Eugen J Elmiger | Award | 335 | — | — | 21,213 | Form 4 |
| 4 Feb 2025 | Kuo Wei Herbert Chang | Award | 335 | — | — | 876 | Form 4 |
| 4 Feb 2025 | Carintia Martinez | Award | 335 | — | — | 2,278 | Form 4 |
| 4 Feb 2025 | Jeff Zhou | Award | 335 | — | — | 6,404 | Form 4 |
| 4 Feb 2025 | Eileen Wynne | Award | 335 | — | — | 1,153 | Form 4 |
| 24 Jan 2025 | Michael R. Hsing | Sale | 3,636 | 700.00 | 2.55M USD | 854,629 | Form 4 |
| 9 Dec 2024 | Theodore Blegen | Sale | 2,500 | 600.00 | 1.50M USD | 53,444 | Form 4 |
Common questions about Monolithic Power Systems's executives and insiders
Source: Financial Modeling PrepVerified against SEC filings