Insider trading

Period: 12 months Stock: AMBA 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.

29 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.

29 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.

29 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.

29 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.
29 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
29 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.

29 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
17 Sep 2026
Sold at will
$394.56K 6,086 at 64.83
0.8%
Not planned
17 Sep 2026
Sold at will
$202.66K 3,126 at 64.83
2.8%
Not planned
17 Sep 2026
Lee Chan W Chief Operations Officer
Sold at will
$187.55K 2,893 at 64.83
1.8%
Not planned
17 Sep 2026
Ju Chi-Hong Senior VP, Systems & GM
Sold at will
$130.24K 2,009 at 64.83
1.3%
Not planned
9 Jul 2026
Chen Yun-Lung VP, Business Dev. & Marketing
Sold at will
$468.66K 5,958 at 78.66
9.0%
Not planned
1 Jul 2026
Ju Chi-Hong Senior VP, Systems & GM
Sold at will
$888.40K 10,000 at 88.84
6.0%
Not planned
17 Jun 2026
Sold at will
$421.07K 6,204 at 67.87
0.8%
Not planned
17 Jun 2026
Lee Chan W Chief Operations Officer
Sold at will
$200.28K 2,951 at 67.87
1.8%
Not planned
17 Jun 2026
Ju Chi-Hong Senior VP, Systems & GM
Sold at will
$136.89K 2,017 at 67.87
1.2%
Not planned
12 Jun 2026
Chen Yun-Lung VP, Business Development and
Sold at will
$660.94K 9,856 at 67.06
12.9%
Not planned
19 Mar 2026
Sold at will
$437.61K 8,083 at 54.14
1.0%
Not planned
19 Mar 2026
Lee Chan W Chief Operations Officer
Sold at will
$197.12K 3,641 at 54.14
2.2%
Not planned
19 Mar 2026
Sold at will
$164.48K 3,038 at 54.14
2.5%
Not planned
19 Mar 2026
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$116.67K 2,155 at 54.14
1.3%
Not planned
17 Mar 2026
Sold at will
$1.00M 18,976 at 52.77
2.2%
Not planned
17 Mar 2026
Lee Chan W Chief Operations Officer
Sold at will
$355.09K 6,729 at 52.77
4.1%
Not planned
17 Mar 2026
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$249.55K 4,729 at 52.77
2.8%
Not planned
17 Mar 2026
Sold at will
$241.53K 4,577 at 52.77
3.8%
Not planned
5 Jan 2026
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$584.11K 7,728 at 75.58
5.0%
Not planned
30 Dec 2025
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$264.75K 3,765 at 70.32
2.4%
Not planned
26 Dec 2025
Sold at will
$36.09K 500 at 72.18
1.2%
Not planned
18 Dec 2025
Sold at will
$276.59K 3,791 at 72.96
3.6%
Not planned
17 Dec 2025
Sold at will
$355.51K 4,950 at 71.82
0.6%
Not planned
17 Dec 2025
Sold at will
$185.22K 2,579 at 71.82
2.4%
Not planned
17 Dec 2025
Lee Chan W Chief Operations Officer
Sold at will
$172.80K 2,406 at 71.82
1.9%
Not planned
17 Dec 2025
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$96.38K 1,342 at 71.82
0.8%
Not planned
16 Dec 2025
Sold at will
$45.16K 624 at 72.38
8.5%
Not planned
14 Oct 2025
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$498.39K 6,156 at 80.96
3.7%
Not planned
13 Oct 2025
Ju Chi-Hong Senior VP, Systems & GM, Asia
Sold at will
$411.09K 5,057 at 81.29
3.0%
Not planned
Showing 1–29 of 29.