Insider trading

Period: 120 months Stock: DMAC Type of trade: Bought × + 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.

66 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.

66 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.

66 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.

66 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.
66 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
66 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.

66 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
25 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$626.82K 73,099 at 8.57
0.8%
24 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$317.72K 40,253 at 7.89
0.5%
21 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$1.55M 208,872 at 7.41
2.5%
20 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$951.21K 128,426 at 7.41
1.5%
19 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$1.73M 240,352 at 7.21
3.0%
18 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$1.23M 182,882 at 6.75
2.3%
17 Nov 2025
STAHLBERG JAN 10% owner · indirect
Bought
$1.22M 187,393 at 6.52
2.4%
27 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$304.63K 50,772 at 6.00
0.7%
26 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$357.89K 59,648 at 6.00
0.8%
25 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$2.03M 338,265 at 6.00
4.6%
22 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$356.58K 59,788 at 5.96
0.8%
21 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$287.03K 48,172 at 5.96
0.7%
20 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$416.50K 71,107 at 5.86
1.0%
15 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$49.40K 8,233 at 6.00
0.1%
14 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$421.92K 70,414 at 5.99
1.0%
13 Aug 2025
STAHLBERG JAN 10% owner · indirect
Bought
$1.73M 293,601 at 5.91
4.3%
23 Jul 2025
Von Koch Thomas 10% owner · indirect
Bought
$10.00M 2,857,142 at 3.50
51.7%
Largest buy in 3 yrs
23 Jul 2025
STAHLBERG JAN 10% owner · indirect
Bought
$5.40M 1,542,857 at 3.50
29.5%
Largest buy in 3 yrs
23 Jul 2025
JACINTO RICHARD II 10% owner · indirect
Bought
$1.40M 400,000 at 3.50
8.8%
First buy on file
28 Jun 2024
STAHLBERG JAN 10% owner · indirect
Bought
$3.00M 1,200,000 at 2.50
29.8%
First buy on file
28 Jun 2024
Von Koch Thomas 10% owner · indirect
Bought
$3.00M 1,200,000 at 2.50
27.7%
+28% of stake
16 Nov 2023
Wambeke David J. Chief Business Officer
Bought
$49.20K 20,000 at 2.46
3.9%
23 Jun 2023
Von Koch Thomas 10% owner · indirect
Bought
$5.00M 1,470,588 at 3.40
51.5%
Largest buy in 3 yrs
23 Jun 2023
Bought
$254.15K 65,000 at 3.91
22.0%
Largest buy in 3 yrs
23 Jun 2023
Wambeke David J. Chief Business Officer
Bought
$150.00K 38,364 at 3.91
8.2%
23 Jun 2023
Bought
$150.00K 38,363 at 3.91
18.3%
Largest buy in 3 yrs
23 Jun 2023
Bought
$50.00K 12,787 at 3.91
74.5%
First buy on file
23 Jun 2023
Pauls Dietrich John President and CEO
Bought
$50.00K 12,787 at 3.91
22.9%
Largest buy in 3 yrs
23 Jun 2023
Kellen Scott CFO and Secretary
Bought
$39.10K 10,000 at 3.91
44.9%
Largest buy in 3 yrs
10 Apr 2023
Wambeke David J. Chief Business Officer
Bought
$750.00K 468,750 at 1.60
opened
First buy on file
9 Dec 2022
Bought
$53.02K 37,079 at 1.43
16.6%
8 Dec 2022
Bought
$28.00K 20,000 at 1.40
9.8%
7 Dec 2022
Bought
$31.60K 22,574 at 1.40
12.5%
6 Dec 2022
Bought
$3.11K 2,300 at 1.35
1.3%
5 Dec 2022
Bought
$48.49K 35,000 at 1.39
29.3%
+29% of stake
2 Dec 2022
Von Koch Thomas 10% owner · indirect
Bought
$3.53M 2,855,847 at 1.24
opened
Largest buy in 3 yrs
1 Dec 2022
Bought 2×
$56.33K 46,952 at 1.20
35.8%
+36% of stake
30 Nov 2022
Bought
$3.53K 2,970 at 1.19
2.3%
29 Nov 2022
Bought
$21.57K 18,125 at 1.19
16.4%
16 Nov 2022
Pauls Dietrich John President and CEO
Bought
$24.20K 20,000 at 1.21
55.9%
Largest buy in 3 yrs
8 Jul 2022
Von Koch Thomas 10% owner · indirect
Bought
$275.90K 207,974 at 1.33
7.9%
First buy on file
15 Sep 2021
ALCORN HARRY W JR SVP, Clinical Operations
Bought
$56.96K 15,000 at 3.80
52.5%
+52% of stake
16 Aug 2021
Burroughs Amy L. Director
Bought
$141.59K 44,950 at 3.15
opened
First buy on file
16 Aug 2021
ALCORN HARRY W JR Senior VP, Clinical Operations
Bought 2×
$62.83K 20,322 at 3.09
246%
First buy on file
16 Aug 2021
Bought 2×
$49.06K 15,000 at 3.27
18.6%
16 Aug 2021
Kellen Scott CFO and Secretary
Bought
$31.46K 10,000 at 3.15
81.4%
Largest buy in 3 yrs
16 Aug 2021
Pauls Dietrich John President and CEO
Bought
$15.70K 5,000 at 3.14
16.2%
First buy on file
16 Aug 2021
ALCORN HARRY W JR Senior VP, Clinical Operations · indirect
Bought
$1.22K 399 at 3.07
opened
First buy on file
4 Dec 2020
Bought 2×
$53.70K 10,000 at 5.37
16.4%
First buy on file
20 Nov 2020
Bought
$63.91K 15,000 at 4.26
16.0%
First buy on file
Showing 1–50 of 66. Page 1 of 2 Older →