Insider trading

Period: 120 months Stock: AMPH Plan: Not stated × + 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.

263 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.

263 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.

263 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.

263 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.
263 decisions over 120 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
263 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.

263 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
15 Mar 2023
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$465.47K 12,776 at 36.43
9.7%
1 Mar 2023
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$398.69K 10,974 at 36.33
9.8%
1 Mar 2023
Sold, plan not stated 3×
$18.35K 500 at 36.70
0.6%
1 Feb 2023
Sold, plan not stated
$15.18K 500 at 30.35
0.6%
3 Jan 2023
Sold, plan not stated
$13.97K 500 at 27.94
0.6%
1 Dec 2022
Sold, plan not stated
$15.07K 500 at 30.13
0.6%
1 Nov 2022
Sold, plan not stated
$15.57K 500 at 31.13
0.6%
3 Oct 2022
Sold, plan not stated
$14.30K 500 at 28.59
0.6%
1 Sep 2022
Sold, plan not stated
$14.72K 500 at 29.44
0.6%
9 Aug 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$383.50K 10,000 at 38.35
9.1%
9 Aug 2022
Liawatidewi Yakob EVP Corp Admin Center
Sold, plan not stated
$119.15K 3,055 at 39.00
4.7%
8 Aug 2022
Liawatidewi Yakob EVP Corp Admin Center
Sold, plan not stated
$190.00K 5,000 at 38.00
7.5%
1 Aug 2022
Sold, plan not stated
$18.74K 500 at 37.48
0.6%
18 Jul 2022
Gerst Diane G. Director
Sold, plan not stated
$56.60K 1,520 at 37.23
10.6%
15 Jul 2022
Liawatidewi Yakob EVP Corp Admin Center
Sold, plan not stated 2×
$397.08K 10,837 at 36.64
15.0%
11 Jul 2022
Gerst Diane G. Director
Sold, plan not stated
$55.14K 1,521 at 36.26
10.6%
5 Jul 2022
Gerst Diane G. Director
Sold, plan not stated
$63.46K 1,813 at 35.00
12.4%
1 Jul 2022
Sold, plan not stated
$17.39K 500 at 34.78
0.6%
30 Jun 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$642.59K 18,386 at 34.95
15.5%
30 Jun 2022
Gerst Diane G. Director
Sold, plan not stated
$180.11K 5,146 at 35.00
28.6%
17 Jun 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$176.68K 5,512 at 32.05
5.2%
6 Jun 2022
Lee Howard Director
Sold, plan not stated
$388.86K 10,291 at 37.79
6.9%
1 Jun 2022
Sold, plan not stated 2×
$18.50K 500 at 37.00
0.6%
23 May 2022
Lee Howard Director
Sold, plan not stated
$349.32K 10,000 at 34.93
6.7%
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%
18 May 2022
Sold, plan not stated
$347.83K 9,924 at 35.05
10.3%
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 May 2022
Sold, plan not stated
$366.50K 10,291 at 35.61
17.9%
2 May 2022
Sold, plan not stated 2×
$10.38K 295 at 35.18
0.4%
1 Apr 2022
Sold, plan not stated 2×
$18.34K 500 at 36.69
0.7%
16 Mar 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated 2×
$1.72M 50,777 at 33.96
30.8%
16 Mar 2022
Sold, plan not stated
$337.07K 10,000 at 33.71
17.5%
15 Mar 2022
PRINS RICHARD K Director
Sold, plan not stated
$340.21K 10,000 at 34.02
18.1%
15 Mar 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$272.25K 7,900 at 34.46
7.4%
7 Mar 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$382.31K 13,026 at 29.35
10.9%
1 Mar 2022
Sold, plan not stated
$13.64K 500 at 27.27
0.6%
25 Feb 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated 2×
$654.85K 23,000 at 28.47
17.8%
25 Feb 2022
Zhou Rong EVP, Production Center
Sold, plan not stated
$381.09K 13,246 at 28.77
15.9%
8 Feb 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$269.50K 10,000 at 26.95
8.6%
8 Feb 2022
Zhou Rong EVP, Production Center
Sold, plan not stated
$187.39K 7,000 at 26.77
8.4%
1 Feb 2022
Sold, plan not stated 2×
$12.04K 500 at 24.08
0.6%
10 Jan 2022
Zhou Rong EVP, Production Center
Sold, plan not stated 2×
$530.68K 20,928 at 25.36
21.5%
10 Jan 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$406.40K 16,000 at 25.40
13.1%
7 Jan 2022
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated 2×
$776.22K 31,776 at 24.43
23.1%
3 Jan 2022
Sold, plan not stated
$11.61K 500 at 23.22
0.6%
30 Dec 2021
PETERS WILLIAM J CFO, EVP & Treasurer
Sold, plan not stated
$234.00K 10,000 at 23.40
8.6%
22 Dec 2021
Sold, plan not stated
$22.50K 1,000 at 22.50
1.3%
Showing 1–50 of 263. Page 1 of 6 Older →