Insider trading

Period: 120 months Stock: ATEC Role: CFO × + 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.

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 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.

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
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
13 Mar 2026
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$986.19K 79,789 at 12.36
11.7%
Planned (10b5-1)
22 Apr 2025
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$401.63K 37,500 at 10.71
7.4%
Planned (10b5-1)
10 Mar 2025
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$1.60M 165,121 at 9.72
25.5%
Planned (10b5-1)
24 Apr 2024
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$480.75K 37,500 at 12.82
8.7%
Planned (10b5-1)
1 Mar 2024
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$1.62M 121,601 at 13.30
22.0%
Planned (10b5-1)
20 Apr 2023
Koning John Todd CHIEF FINANCIAL OFFICER
Sold on a plan
$270.93K 16,500 at 16.42
3.8%
Planned (10b5-1)
27 Feb 2023
Koning John Todd CHIEF FINANCIAL OFFICER
Sold, plan not stated
$332.10K 22,500 at 14.76
4.9%
22 Feb 2023
Koning John Todd CHIEF FINANCIAL OFFICER
Sold, plan not stated
$185.57K 13,068 at 14.20
2.7%
16 Dec 2021
Koning John Todd Chief Financial Officer
Bought
$55.85K 5,000 at 11.17
2.6%
First buy on file
9 Mar 2021
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$116.83K 7,000 at 16.69
1.1%
16 Feb 2021
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$407.00K 25,000 at 16.28
3.8%
11 Aug 2020
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$32.10K 5,000 at 6.42
0.8%
4 Aug 2020
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$44.91K 8,929 at 5.03
1.3%
10 Mar 2020
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$33.31K 6,563 at 5.08
1.3%
2 Aug 2019
Black Jeffrey G. EVP & CFO
Sold, plan not stated
$42.37K 8,929 at 4.75
1.7%
17 Aug 2017
Black Jeffrey G. Executive VP & CFO · indirect
Bought
$9.00K 5,000 at 1.80
17.2%
First buy on file
16 Aug 2017
Black Jeffrey G. Executive VP & CFO
Bought
$7.00K 4,000 at 1.75
5.3%
First buy on file
Showing 1–17 of 17.