Insider trading

Period: 120 months Stock: DYAI Type of trade: Sold × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

35 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.

35 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.

35 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.

35 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.
35 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
35 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.

35 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
24 Jul 2026
Sold at will
$3.17K 2,616 at 1.21
0.1%
Not planned
23 Jul 2026
Sold at will
$71.30K 54,760 at 1.30
1.6%
Not planned
22 Jul 2026
Sold at will
$50.48K 38,016 at 1.33
1.1%
Not planned
7 Jan 2025
Sold at will
$30.22K 15,000 at 2.01
0.4%
Not planned
6 Jan 2025
Sold at will
$38.46K 20,000 at 1.92
0.6%
Not planned
30 Dec 2024
Sold at will
$79.07K 40,000 at 1.98
1.2%
Not planned
24 Dec 2024
Sold at will
$9.19K 5,100 at 1.80
0.1%
Not planned
23 Dec 2024
Sold at will
$75.57K 41,143 at 1.84
1.2%
Not planned
20 Dec 2024
Sold at will
$47.34K 25,281 at 1.87
0.7%
Not planned
6 Jun 2024
Sold at will
$63.91K 26,340 at 2.43
0.7%
Not planned
8 Jul 2022
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$3.71K 1,089 at 3.41
100%
Sold half or more
7 Jul 2022
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$27.49K 7,854 at 3.50
100%
Sold half or more
23 Dec 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$117.94K 28,767 at 4.10
0.7%
22 Dec 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$146.87K 35,649 at 4.12
0.8%
21 Dec 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$114.68K 26,486 at 4.33
0.6%
11 Aug 2021
Sold, plan not stated
$115.65B 150,000 at 770,983.56
4.1%
27 Jul 2021
Sold, plan not stated
$2.60B 25,000 at 103,965.00
0.7%
9 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$85.56K 23,000 at 3.72
0.5%
8 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$114.60K 30,000 at 3.82
0.7%
7 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$173.80K 44,000 at 3.95
1.0%
4 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$508.20K 132,000 at 3.85
3.2%
3 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$96.46K 26,721 at 3.61
0.7%
2 Jun 2021
EMALFARB MARK A President and CEO · indirect
Sold, plan not stated
$285.55K 76,349 at 3.74
1.8%
11 Dec 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$26.54K 4,575 at 5.80
100%
Sold half or more
10 Dec 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$31.68K 5,425 at 5.84
54.3%
Sold half or more
3 Dec 2019
Buckland Barry Director
Sold, plan not stated
$92.70K 15,000 at 6.18
100%
Sold half or more
11 Nov 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$59.90K 10,000 at 5.99
100%
Sold half or more
11 Oct 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$31.73K 5,218 at 6.08
100%
Sold half or more
10 Oct 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$28.88K 4,782 at 6.04
100%
Sold half or more
10 Sep 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$52.70K 10,000 at 5.27
100%
Sold half or more
13 Aug 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$36.23K 6,300 at 5.75
100%
Sold half or more
12 Aug 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$21.16K 3,700 at 5.72
100%
Sold half or more
10 Jul 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$58.70K 10,000 at 5.87
100%
Sold half or more
18 Jun 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$128.80K 20,000 at 6.44
100%
Sold half or more
17 Jun 2019
TCHELET RONEN VP of Research and Bus. Dvlpmt
Sold, plan not stated
$122.20K 20,000 at 6.11
100%
Sold half or more
Showing 1–35 of 35.