Insider trading

Period: 120 months Stock: AMPH Minimum amount: $1M × + 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.

17 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.

17 decisions over 120 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.

17 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.

17 decisions over 120 months Remove this filter
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.
17 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
17 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.

17 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
10 Jan 2024
Luo Mary Z. COO,Chief Scientist & Chairman
Sold on a plan 4×
$7.17M 131,386 at 54.59
10.6%
Planned (10b5-1)
9 Jan 2024
Luo Mary Z. COO,Chief Scientist & Chairman
Sold on a plan 3×
$4.92M 86,156 at 57.14
6.5%
Planned (10b5-1)
8 Jan 2024
Luo Mary Z. COO,Chief Scientist & Chairman
Sold on a plan 7×
$7.88M 133,644 at 58.93
9.2%
Planned (10b5-1)
14 Nov 2023
PETERS WILLIAM J CFO, EVP & Treasurer
Sold on a plan 3×
$3.30M 59,250 at 55.67
36.9%
Planned (10b5-1)
6 Sep 2023
PETERS WILLIAM J CFO, EVP & Treasurer
Sold on a plan 2×
$3.14M 60,743 at 51.75
37.5%
Planned (10b5-1)
28 Aug 2023
Liawatidewi Yakob EVP Corp Admin Center
Sold at will
$1.53M 28,816 at 53.13
29.3%
Not planned
15 Jun 2023
PETERS WILLIAM J CFO, EVP & Treasurer
Sold on a plan 3×
$1.87M 36,868 at 50.85
25.9%
Planned (10b5-1)
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%
16 Mar 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated 2×
$1.72M 50,777 at 33.96
30.8%
11 Sep 2019
Zhang Jack Y. CEO & Chief Scientific Officer · indirect
Sold, plan not stated
$6.25M 300,000 at 20.82
4.1%
11 Dec 2018
Sold, plan not stated 2×
$1.43M 66,757 at 21.47
0.9%
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%
10 Dec 2018
Sold, plan not stated
$1.27M 58,557 at 21.72
65.6%
Sold half or more
2 Oct 2017
Sold, plan not stated
$1.16M 63,624 at 18.18
62.5%
Sold half or more
Showing 1–17 of 17.