Insider trading

Period: 12 months Stock: MPWR Plan: Not on a plan × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

32 decisions over 12 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

32 decisions over 12 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

32 decisions over 12 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

32 decisions over 12 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
32 decisions over 12 months Remove this filter
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
32 decisions over 12 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

32 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
24 Aug 2026
Sold at will
$64.08K 50 at 1,281.57
8.8%
Not planned
24 Aug 2026
DEAN ROBERT W II Interim CFO
Sold at will
$41.53K 32 at 1,297.72
0.4%
Not planned
17 Aug 2026
DEAN ROBERT W II Interim CFO
Sold at will
$8.48K 6 at 1,413.64
0.1%
Not planned
11 Aug 2026
Sold at will
$71.00K 50 at 1,420.00
8.1%
Not planned
5 Aug 2026
DEAN ROBERT W II Interim CFO
Sold at will
$141.15K 105 at 1,344.27
1.5%
Not planned
27 May 2026
Tseng Saria EVP & General Counsel
Sold at will
$12.86M 7,565 at 1,700.00
5.0%
Not planned
26 May 2026
Zhou Jeff Director
Sold at will
$816.48K 486 at 1,680.00
11.3%
Not planned
26 May 2026
DEAN ROBERT W II Interim CFO
Sold at will
$36.29K 22 at 1,649.56
0.4%
Not planned
22 May 2026
Tseng Saria EVP & General Counsel
Sold at will
$7.93M 5,000 at 1,586.43
3.2%
Not planned
18 May 2026
Sold at will 13×
$59.31M 40,000 at 1,482.75
4.5%
Not planned
18 May 2026
DEAN ROBERT W II Interim CFO
Sold at will
$6.25K 4 at 1,563.28
0.1%
Not planned
6 May 2026
Xiao Deming EVP, Global Operations
Sold at will 4×
$49.64M 30,000 at 1,654.55
12.7%
Not planned
6 May 2026
Elmiger Eugen J Director
Sold at will 9×
$19.02M 12,000 at 1,584.96
69.0%
Sold half or more
6 May 2026
Zhou Jeff Director
Sold at will
$825.00K 500 at 1,650.00
10.4%
Not planned
6 May 2026
Wynne Eileen Director
Sold at will
$530.20K 335 at 1,582.68
25.0%
Not planned
5 May 2026
Zhou Jeff Director
Sold at will 2×
$1.61M 1,014 at 1,587.06
17.5%
Not planned
5 May 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold at will
$601.85K 380 at 1,583.81
29.3%
Not planned
11 Feb 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold at will
$236.00K 200 at 1,179.98
13.3%
Not planned
6 Feb 2026
Sold at will
$64.32M 54,923 at 1,171.16
5.3%
Not planned
6 Feb 2026
Xiao Deming EVP, Global Operations
Sold at will
$26.79M 22,875 at 1,171.16
8.8%
Not planned
6 Feb 2026
Tseng Saria EVP & General Counsel
Sold at will
$26.79M 22,875 at 1,171.16
10.2%
Not planned
6 Feb 2026
Sciammas Maurice EVP, WW Sales & Marketing
Sold at will
$26.79M 22,875 at 1,171.16
11.4%
Not planned
6 Feb 2026
BLEGEN THEODORE EVP and CFO
Sold at will
$25.44M 21,725 at 1,171.16
20.9%
Not planned
26 Nov 2025
Tseng Saria EVP & General Counsel
Sold at will 9×
$18.53M 20,000 at 926.47
10.7%
Not planned
25 Nov 2025
Tseng Saria EVP & General Counsel
Sold at will 19×
$18.08M 20,000 at 904.18
9.6%
Not planned
25 Nov 2025
Sold at will
$89.70K 100 at 896.97
19.0%
Not planned
24 Nov 2025
Sciammas Maurice EVP, WW Sales & Marketing
Sold at will
$3.56M 3,976 at 895.23
2.7%
Not planned
21 Nov 2025
Sold at will
$87.40K 100 at 873.97
16.0%
Not planned
19 Nov 2025
Sciammas Maurice EVP, WW Sales & Marketing
Sold at will 24×
$30.78M 35,000 at 879.36
19.1%
Not planned
12 Nov 2025
Sold at will 19×
$35.72M 37,000 at 965.52
3.9%
Not planned
11 Nov 2025
Sold at will 17×
$38.34M 40,000 at 958.39
4.0%
Not planned
5 Nov 2025
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold at will
$197.36K 200 at 986.81
13.3%
Not planned
Showing 1–32 of 32.