Insider trading

Period: 120 months Stock: ACET Role: 10% owners × + 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.

13 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.

13 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.

13 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.

13 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.
13 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
13 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.

13 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
8 Apr 2026
ORBIMED ADVISORS LLC 10% owner · indirect
Sold at will 2×
$468.08K 72,939 at 6.42
100%
Sold half or more
7 Apr 2026
ORBIMED ADVISORS LLC 10% owner · indirect
Sold at will 2×
$206.77K 31,719 at 6.52
49.4%
Not planned
20 Feb 2026
RA CAPITAL MANAGEMENT, L.P. 10% owner · indirect
Bought
$543.44K 74,751 at 7.27
6.7%
Largest buy in 3 yrs
19 Feb 2026
RA CAPITAL MANAGEMENT, L.P. 10% owner · indirect
Bought
$535.47K 74,268 at 7.21
7.2%
Largest buy in 3 yrs
18 Feb 2026
RA CAPITAL MANAGEMENT, L.P. 10% owner · indirect
Bought
$525.02K 74,577 at 7.04
7.8%
First buy on file
8 Oct 2025
ORBIMED ADVISORS LLC 10% owner · indirect
Bought 2×
$5.00M 5,000,000 at 1.00
124%
+124% of stake
18 Dec 2019
Sold, plan not stated
$7.39M 6,161,531 at 1.20
74.4%
Sold half or more
13 Dec 2019
Sold, plan not stated
$255.80K 205,763 at 1.24
2.4%
12 Dec 2019
Sold, plan not stated
$482.32K 385,884 at 1.25
4.3%
11 Dec 2019
Sold, plan not stated
$74.90K 59,921 at 1.25
0.7%
10 Dec 2019
Sold, plan not stated
$423.66K 336,561 at 1.26
3.6%
15 Nov 2019
Sold, plan not stated
$661.94K 531,040 at 1.25
5.4%
30 Jan 2018
Bought
$3.50M 233,333 at 15.00
2.4%
First buy on file
Showing 1–13 of 13.