Insider trading

Period: 120 months Stock: ATRC Role: Directors × + 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.

43 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.

43 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.

43 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.

43 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.
43 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
43 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.

43 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
11 Sep 2026
GROVES REGINA E Director
Sold at will
$288.07K 5,313 at 54.22
13.3%
Not planned
5 Aug 2026
Prange Karen Director
Sold at will
$138.28K 3,564 at 38.80
13.5%
Not planned
5 Aug 2026
Yuen Maggie Director
Sold at will
$134.47K 3,500 at 38.42
20.0%
Not planned
28 Jul 2026
WEHRWEIN SVEN Director
Sold at will
$946.00K 25,000 at 37.84
38.2%
Not planned
20 May 2026
Prange Karen Director
Sold at will
$85.95K 3,000 at 28.65
10.2%
Not planned
25 Nov 2025
WEHRWEIN SVEN Director
Sold at will
$188.75K 4,967 at 38.00
12.6%
Not planned
24 Nov 2025
WEHRWEIN SVEN Director
Sold at will
$187.83K 5,033 at 37.32
12.8%
Not planned
21 Nov 2025
Yuen Maggie Director
Sold at will
$107.16K 3,000 at 35.72
20.9%
Not planned
22 Aug 2025
WEHRWEIN SVEN Director
Sold at will
$185.00K 5,000 at 37.00
12.7%
Not planned
19 Aug 2025
WEHRWEIN SVEN Director
Sold at will
$180.00K 5,000 at 36.00
12.7%
Not planned
6 Aug 2025
GROVES REGINA E Director
Sold at will
$90.28K 2,452 at 36.82
6.8%
Not planned
5 Mar 2025
Prange Karen Director
Sold at will
$232.53K 6,100 at 38.12
25.5%
Not planned
15 Aug 2024
Yuen Maggie Director
Sold at will
$84.25K 3,500 at 24.07
28.1%
Not planned
8 Jun 2023
Prange Karen Director
Sold at will
$34.15K 713 at 47.89
4.2%
Not planned
26 May 2023
Yuen Maggie Director
Sold at will
$202.88K 4,313 at 47.04
47.9%
Not planned
4 Nov 2021
Collar Mark A Director
Sold, plan not stated
$323.64K 4,000 at 80.91
4.9%
15 Sep 2021
GROVES REGINA E Director
Sold, plan not stated
$235.85K 3,156 at 74.73
16.3%
1 Jul 2021
Collar Mark A Director
Sold, plan not stated
$238.83K 3,000 at 79.61
3.6%
26 May 2021
GROVES REGINA E Director
Sold, plan not stated
$302.77K 4,208 at 71.95
17.9%
10 May 2021
Sold, plan not stated
$354.36K 4,631 at 76.52
10.1%
7 May 2021
Sold, plan not stated
$3.01M 38,641 at 77.90
48.5%
3 May 2021
WEHRWEIN SVEN Director
Sold, plan not stated 2×
$779.70K 10,000 at 77.97
44.1%
30 Apr 2021
GROVES REGINA E Director
Bought
$2.61K 34 at 76.68
0.2%
First buy on file
1 Apr 2021
Collar Mark A Director
Sold, plan not stated
$195.84K 3,000 at 65.28
4.0%
4 Jan 2021
Collar Mark A Director
Sold, plan not stated
$166.08K 3,000 at 55.36
3.8%
17 Nov 2020
Bought
$500.67K 12,350 at 40.54
43.1%
First buy on file
6 Oct 2020
Collar Mark A Director
Sold, plan not stated
$93.20K 2,330 at 40.00
2.9%
1 Oct 2020
Collar Mark A Director
Sold, plan not stated
$26.93K 670 at 40.20
0.8%
14 Sep 2020
GROVES REGINA E Director
Sold, plan not stated
$264.07K 6,313 at 41.83
22.4%
1 Jul 2020
Collar Mark A Director
Sold, plan not stated
$178.40K 4,000 at 44.60
4.7%
7 Apr 2020
Collar Mark A Director
Sold, plan not stated
$144.28K 4,000 at 36.07
5.2%
15 Jan 2020
Collar Mark A Director
Sold, plan not stated
$140.08K 4,000 at 35.02
4.9%
12 Sep 2019
GROVES REGINA E Director
Bought
$12.43K 500 at 24.86
2.0%
First buy on file
14 Jun 2018
Collar Mark A Director
Sold, plan not stated
$52.25K 2,090 at 25.00
3.0%
8 May 2018
Sold, plan not stated
$228.20K 10,000 at 22.82
33.4%
13 Mar 2018
Sold, plan not stated
$200.00K 10,000 at 20.00
33.4%
1 Mar 2018
Bought
$194.04K 11,000 at 17.64
189%
First buy on file
1 Mar 2018
GROVES REGINA E Director
Bought
$17.43K 1,000 at 17.43
10.6%
First buy on file
8 Nov 2017
Bought
$27.54K 1,500 at 18.36
15.8%
First buy on file
22 Aug 2017
Sold, plan not stated
$224.00K 10,000 at 22.40
33.4%
17 May 2017
Sold, plan not stated
$214.40K 10,000 at 21.44
41.4%
5 May 2017
Hooven Michael D Director
Sold, plan not stated
$220.80K 10,000 at 22.08
14.9%
15 Nov 2016
Sold, plan not stated
$197.30K 10,000 at 19.73
41.4%
Showing 1–43 of 43.