Insider trading

Period: 120 months Stock: ALDX Plan: Discretionary × + Add filter Clear all
Views & alerts

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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.

22 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.

22 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.

22 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.

22 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.
22 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
22 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.

22 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
3 Jun 2026
Brady Todd C President and CEO
Bought
$418.45K 250,000 at 1.67
17.0%
First buy in 3+ yrs
19 Mar 2026
DOUGLAS RICHARD Director
Bought
$98.00K 70,000 at 1.40
56.0%
First buy on file
18 Mar 2026
Alfieri Michael Principal Financial Officer
Bought
$7.10K 5,000 at 1.42
200%
+200% of stake
13 Aug 2025
Alfieri Michael Principal Financial Officer
Bought
$13.25K 2,500 at 5.30
opened
First buy on file
11 Aug 2025
Machatha Stephen Chief Development Officer
Sold at will
$113.71K 22,073 at 5.15
9.1%
Not planned
3 Apr 2025
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Sold at will
$4.83M 3,400,000 at 1.42
36.7%
Not planned
12 Aug 2024
Machatha Stephen Chief Development Officer
Sold at will
$75.97K 16,041 at 4.74
6.3%
Not planned
12 Aug 2024
Greenberg Bruce See Remarks
Sold at will
$51.31K 10,834 at 4.74
7.9%
Not planned
5 Apr 2024
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Bought
$178.75K 37,712 at 4.74
0.4%
4 Apr 2024
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Bought
$655.11K 140,281 at 4.67
1.5%
3 Apr 2024
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Bought
$1.27M 309,847 at 4.09
3.5%
2 Apr 2024
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Bought
$640.02K 186,051 at 3.44
2.2%
1 Apr 2024
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Bought
$27.22K 8,374 at 3.25
0.1%
12 Mar 2024
Brady Todd C President and CEO
Sold at will
$260.24K 85,324 at 3.05
5.5%
Not planned
12 Mar 2024
Machatha Stephen Chief Development Officer
Sold at will
$36.50K 11,537 at 3.16
4.5%
Not planned
11 Mar 2024
Brady Todd C President and CEO
Sold at will
$320.52K 97,914 at 3.27
5.9%
Not planned
11 Mar 2024
Machatha Stephen Chief Development Officer
Sold at will
$62.10K 18,231 at 3.41
6.7%
Not planned
11 Mar 2024
Greenberg Bruce See Remarks
Sold at will
$44.97K 13,201 at 3.41
9.9%
Not planned
18 Oct 2023
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Sold at will
$533.31K 306,499 at 1.74
3.4%
Not planned
16 Oct 2023
PERCEPTIVE ADVISORS LLC 10% owner · indirect
Sold at will
$3.92M 2,450,000 at 1.60
21.6%
Not planned
12 Apr 2023
Bought
$5.16K 509 at 10.13
123%
+123% of stake
3 May 2021
Bought
$5.29K 413 at 12.81
opened
First buy on file
Showing 1–22 of 22.