Insider trading

Period: 120 months Stock: AMPH Role: CEO × + 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.

25 decisions over 120 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.

25 decisions over 120 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.

25 decisions over 120 months
The trade

Minimum amount

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

25 decisions over 120 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.
25 decisions over 120 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
25 decisions over 120 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.

25 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
20 May 2022
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated
$364.37K 10,650 at 34.21
0.5%
19 May 2022
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated 2×
$1.41M 41,730 at 33.76
1.9%
18 May 2022
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated 3×
$2.29M 67,046 at 34.14
3.0%
17 May 2022
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated 2×
$1.80M 50,376 at 35.76
2.2%
16 May 2022
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated 2×
$2.43M 68,069 at 35.75
2.9%
18 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$7.56K 407 at 18.58
0.0%
17 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$257.72K 13,801 at 18.67
0.2%
16 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$301.03K 16,259 at 18.51
0.2%
12 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$251.52K 13,277 at 18.94
0.2%
11 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$377.88K 19,823 at 19.06
0.3%
10 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$295.34K 15,747 at 18.76
0.2%
9 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$225.78K 11,927 at 18.93
0.2%
8 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$254.05K 13,452 at 18.89
0.2%
5 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$293.72K 15,507 at 18.94
0.2%
4 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$483.02K 25,570 at 18.89
0.4%
3 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$299.32K 16,299 at 18.36
0.2%
2 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$257.82K 13,817 at 18.66
0.2%
1 Feb 2021
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$441.12K 24,114 at 18.29
0.3%
11 Sep 2019
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$6.25M 300,000 at 20.82
4.1%
14 Dec 2018
Zhang Jack Y. CEO & Chief Scientific Officer
Sold, plan not stated
$892.31K 43,577 at 20.48
2.1%
13 Dec 2018
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$623.17K 29,689 at 20.99
0.4%
12 Dec 2018
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$794.74K 37,469 at 21.21
0.5%
11 Dec 2018
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated 2×
$1.43M 66,757 at 21.47
0.9%
16 May 2018
Zhang Jack Y. CEO & Chief Scientific Officer
Bought
$240.85K 15,000 at 16.06
0.7%
First buy on file
15 May 2018
Zhang Jack Y. CEO & Chief Scientific Officer
Bought
$401.97K 25,000 at 16.08
1.2%
First buy on file
Showing 1–25 of 25.