Insider trading

Period: 12 months Stock: MPWR Role: Other officers × + Add filter Clear all
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When

Period

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

28 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.

28 decisions over 12 months Remove this filter
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.

28 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.

28 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.
28 decisions over 12 months
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
28 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.

28 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
3 Aug 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$40.32K 30 at 1,343.94
2.6%
Planned (10b5-1)
15 Jul 2026
Sciammas Maurice EVP, WW Sales & Marketing
Sold on a plan 18×
$20.25M 15,000 at 1,349.73
9.0%
Planned (10b5-1)
1 Jul 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$40.55K 30 at 1,351.61
2.5%
Planned (10b5-1)
1 Jun 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$46.02K 30 at 1,533.95
2.5%
Planned (10b5-1)
27 May 2026
Tseng Saria EVP & General Counsel
Sold at will
$12.86M 7,565 at 1,700.00
5.0%
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
15 May 2026
Sciammas Maurice EVP, WW Sales & Marketing
Sold on a plan 8×
$18.74M 12,000 at 1,561.40
6.7%
Planned (10b5-1)
6 May 2026
Xiao Deming EVP, Global Operations
Sold at will 4×
$49.64M 30,000 at 1,654.55
12.7%
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
4 May 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$47.66K 30 at 1,588.73
2.4%
Planned (10b5-1)
8 Apr 2026
Tseng Saria EVP & General Counsel
Sold on a plan 10×
$11.70M 8,963 at 1,305.22
5.4%
Planned (10b5-1)
6 Apr 2026
Tseng Saria EVP & General Counsel
Sold on a plan 8×
$8.92M 7,636 at 1,167.95
4.4%
Planned (10b5-1)
1 Apr 2026
Tseng Saria EVP & General Counsel
Sold on a plan 5×
$1.59M 1,400 at 1,133.52
0.8%
Planned (10b5-1)
1 Apr 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$33.49K 30 at 1,116.44
2.4%
Planned (10b5-1)
30 Mar 2026
Tseng Saria EVP & General Counsel
Sold on a plan 8×
$25.94M 25,674 at 1,010.50
12.8%
Planned (10b5-1)
20 Mar 2026
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold on a plan
$32.85K 30 at 1,095.07
2.3%
Planned (10b5-1)
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
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
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
24 Nov 2025
Sciammas Maurice EVP, WW Sales & Marketing
Sold at will
$3.56M 3,976 at 895.23
2.7%
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
5 Nov 2025
Sciammas Maurice EVP, WW Sales & Marketing · indirect
Sold at will
$197.36K 200 at 986.81
13.3%
Not planned
24 Oct 2025
Tseng Saria EVP & General Counsel
Sold on a plan
$1.41M 1,300 at 1,087.62
1.0%
Planned (10b5-1)
16 Oct 2025
Tseng Saria EVP & General Counsel
Sold on a plan 2×
$2.88M 2,812 at 1,025.72
2.2%
Planned (10b5-1)
15 Oct 2025
Tseng Saria EVP & General Counsel
Sold on a plan
$14.25M 14,028 at 1,016.18
9.7%
Planned (10b5-1)
Showing 1–28 of 28.