Insider trading

Period: 120 months Stock: ARDX Type of trade: Bought × + 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 Remove this filter
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
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
20 Feb 2026
MOTT DAVID M Director
Bought
$1.95M 333,333 at 5.84
11.2%
Largest buy in 3 yrs
16 Jun 2025
MOTT DAVID M Director
Bought
$725.88K 200,000 at 3.63
7.4%
9 Jun 2025
MOTT DAVID M Director
Bought
$737.26K 200,000 at 3.69
8.0%
15 May 2025
MOTT DAVID M Director
Bought
$329.12K 100,000 at 3.29
4.2%
2 May 2025
MOTT DAVID M Director
Bought
$1.61M 381,377 at 4.22
18.9%
Largest buy in 3 yrs
24 Feb 2025
MOTT DAVID M Director
Bought
$388.74K 77,729 at 5.00
4.0%
21 Jan 2025
MOTT DAVID M Director
Bought
$992.67K 199,000 at 4.99
11.4%
19 Dec 2024
MOTT DAVID M Director
Bought
$996.58K 213,300 at 4.67
15.0%
13 Nov 2024
MOTT DAVID M Director
Bought
$996.60K 215,868 at 4.62
17.8%
17 Nov 2022
MOTT DAVID M Director
Bought
$1.00M 567,000 at 1.76
94.5%
+95% of stake
31 Aug 2022
GRAMMER ELIZABETH A See Remarks
Bought
$1.86K 3,000 at 0.62
1.2%
First buy on file
31 Aug 2022
RAAB MICHAEL President & CEO
Bought
$1.86K 3,000 at 0.62
0.5%
First buy on file
31 Aug 2022
Williams Laura A Chief Medical Officer
Bought
$1.86K 3,000 at 0.62
1.2%
First buy on file
31 Aug 2022
Renz Justin A Chief Financial Officer
Bought
$1.86K 3,000 at 0.62
1.2%
First buy on file
31 Aug 2022
Rosenbaum David P. Chief Development Officer · indirect
Bought
$1.86K 3,000 at 0.62
3.4%
First buy on file
31 Aug 2022
Felsch Robert Ora See Remarks
Bought
$1.86K 3,000 at 0.62
3.4%
First buy on file
10 Dec 2020
MOTT DAVID M Director
Bought
$1.00M 170,000 at 5.89
68.7%
First buy on file
25 Jun 2020
MOTT DAVID M Director
Bought
$476.04K 68,373 at 6.96
38.2%
First buy on file
24 Jun 2020
MOTT DAVID M Director
Bought
$489.86K 72,598 at 6.75
68.3%
First buy on file
22 Jun 2020
MOTT DAVID M Director
Bought
$31.52K 4,673 at 6.75
4.6%
First buy on file
30 Dec 2019
GRAMMER ELIZABETH A EVP, General Counsel · indirect
Bought
$495.92 66 at 7.51
3.3%
First buy on file
30 May 2018
RINGOLD GORDON Director · indirect
Bought
$40.00K 10,000 at 4.00
66.7%
First buy on file
Showing 1–22 of 22.