Insider trading

Period: 12 months Stock: ATRA + 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.

11 decisions over 12 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.

11 decisions over 12 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.

11 decisions over 12 months
The trade

Minimum amount

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

11 decisions over 12 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.
11 decisions over 12 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
11 decisions over 12 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.

11 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
4 Sep 2026
Cherry Brian N Director
Bought
$999.99K 104,166 at 9.60
167%
First buy on file
17 Aug 2026
Nguyen AnhCo President and CEO
Sold at will
$40.88K 5,062 at 8.08
3.7%
Not planned
18 May 2026
Nguyen AnhCo President and CEO
Sold at will
$47.84K 5,241 at 9.13
3.7%
Not planned
18 May 2026
Grant-Huerta Yanina Chief Accounting Officer
Sold at will
$22.04K 2,414 at 9.13
4.6%
Not planned
7 May 2026
EcoR1 Capital, LLC 10% owner · indirect
Bought
$4.74M 507,407 at 9.35
48.6%
First buy on file
7 May 2026
Panacea Innovation Ltd 10% owner · indirect
Sold at will
$3.17M 313,446 at 10.10
23.7%
Not planned
2 Mar 2026
Nguyen AnhCo President and CEO
Sold at will 4×
$15.24K 2,996 at 5.09
4.6%
Not planned
2 Mar 2026
Grant-Huerta Yanina Chief Accounting Officer
Sold at will 4×
$10.69K 2,104 at 5.08
6.2%
Not planned
12 Jan 2026
Panacea Innovation Ltd 10% owner · indirect
Sold at will
$489.02K 80,554 at 6.07
5.7%
Not planned
17 Nov 2025
Nguyen AnhCo President and CEO
Sold at will 2×
$38.44K 2,915 at 13.19
4.3%
Not planned
17 Nov 2025
Grant-Huerta Yanina Chief Accounting Officer
Sold at will 3×
$23.79K 1,804 at 13.19
5.1%
Not planned
Showing 1–11 of 11.