Insider trading

Period: 120 months Stock: NTHI + 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.

44 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.

44 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.

44 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.

44 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.
44 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
44 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.

44 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
15 Sep 2026
Heshmatpour Amir F CEO, President
Bought
$115.40K 35,000 at 3.30
1.1%
Cluster · 3 buyers
15 Sep 2026
Bought
$16.81K 5,000 at 3.36
2.2%
Cluster · 3 buyers
14 Sep 2026
Heshmatpour Amir F CEO, President
Bought
$59.40K 15,000 at 3.96
0.5%
Cluster · 3 buyers
14 Sep 2026
CHEN THOMAS C CEO · indirect
Bought
$20.00K 5,242 at 3.82
27.2%
Cluster · 3 buyers
14 Sep 2026
Bought
$1.00K 257 at 3.89
0.1%
Cluster · 3 buyers
11 Sep 2026
Heshmatpour Amir F CEO, President
Bought
$135.62K 37,000 at 3.67
1.2%
Cluster · 3 buyers
11 Sep 2026
CHEN THOMAS C CEO · indirect
Bought
$20.00K 5,556 at 3.60
40.5%
Cluster · 3 buyers
18 Aug 2026
CHEN THOMAS C CEO · indirect
Bought
$70.00K 12,757 at 5.49
×13
Cluster · 3 buyers
18 Aug 2026
Heshmatpour Amir F CEO, President
Bought
$49.86K 9,000 at 5.54
0.3%
Cluster · 3 buyers
17 Aug 2026
Heshmatpour Amir F CEO, President
Bought
$13.12K 3,000 at 4.37
0.1%
Cluster · 3 buyers
17 Aug 2026
Bought
$10.00K 2,472 at 4.04
0.4%
Cluster · 3 buyers
14 Aug 2026
Bought
$130.00K 33,787 at 3.85
6.2%
Cluster · 3 buyers
14 Aug 2026
Heshmatpour Amir F CEO, President
Bought
$45.46K 12,000 at 3.79
0.4%
Cluster · 3 buyers
1 May 2026
Heshmatpour Amir F President
Bought
$41.59K 10,000 at 4.16
0.3%
Cluster · 3 buyers
28 Apr 2026
Heshmatpour Amir F President
Bought
$45.18K 10,000 at 4.52
0.3%
Cluster · 3 buyers
23 Apr 2026
Heshmatpour Amir F President
Bought
$49.00K 10,000 at 4.90
0.3%
Cluster · 3 buyers
23 Apr 2026
Neman-Ebrahim Yousha Chief Clinical Officer
Bought
$2.44K 500 at 4.88
0.4%
Cluster · 3 buyers
10 Apr 2026
Heshmatpour Amir F President
Bought
$48.95K 10,000 at 4.90
0.3%
Cluster · 3 buyers
9 Apr 2026
Heshmatpour Amir F President
Bought
$25.95K 5,000 at 5.19
0.2%
Cluster · 3 buyers
9 Apr 2026
SUH, DAVID JR. Chief Accounting Officer
Bought
$1.00K 200 at 5.00
0.2%
Cluster · 3 buyers
8 Apr 2026
Heshmatpour Amir F President
Bought
$56.05K 10,000 at 5.61
0.3%
Cluster · 3 buyers
6 Apr 2026
Heshmatpour Amir F President
Bought
$31.60K 5,000 at 6.32
0.2%
Cluster · 3 buyers
2 Apr 2026
Heshmatpour Amir F President
Bought
$121.80K 20,000 at 6.09
0.7%
Cluster · 3 buyers
24 Nov 2025
Heshmatpour Amir F President
Bought
$39.06K 6,000 at 6.51
0.2%
Cluster · 3 buyers
21 Nov 2025
Heshmatpour Amir F President
Bought
$119.60K 20,000 at 5.98
0.7%
Cluster · 3 buyers
21 Nov 2025
Heshmatpour Amir F President
Bought
$26.00K 4,000 at 6.50
0.1%
Cluster · 3 buyers
20 Nov 2025
Neman-Ebrahim Yousha Chief Clinical Officer
Bought
$7.36K 1,100 at 6.69
0.8%
Cluster · 3 buyers
23 May 2025
Heshmatpour Amir F President
Bought
$14.79K 2,000 at 7.39
0.1%
Cluster · 3 buyers
22 May 2025
Bought
$20.00K 2,709 at 7.38
0.5%
Cluster · 3 buyers
22 May 2025
Bought
$4.92K 675 at 7.29
0.3%
Cluster · 3 buyers
21 May 2025
Bought
$20.00K 2,759 at 7.25
0.5%
Cluster · 3 buyers
19 May 2025
Bought
$976.05 135 at 7.23
0.1%
Cluster · 3 buyers
16 May 2025
Heshmatpour Amir F President
Bought
$59.22K 3,510 at 16.87
0.2%
Cluster · 3 buyers
15 May 2025
Heshmatpour Amir F President
Bought
$10.95K 1,500 at 7.30
0.1%
Cluster · 3 buyers
14 May 2025
Heshmatpour Amir F President
Bought
$7.27K 1,000 at 7.27
0.1%
Cluster · 3 buyers
13 May 2025
Heshmatpour Amir F President
Bought
$6.94K 990 at 7.01
0.1%
Cluster · 3 buyers
13 May 2025
Sold at will
$631.11 90 at 7.01
0.0%
Not planned
12 May 2025
Delshad Jim Director
Bought
$36.11K 5,000 at 7.22
9.9%
Cluster · 3 buyers
12 May 2025
Heshmatpour Amir F President
Bought
$10.12K 1,400 at 7.23
0.1%
Cluster · 3 buyers
12 May 2025
Bought
$2.80K 400 at 7.00
0.1%
Cluster · 3 buyers
11 May 2025
Heshmatpour Amir F President
Bought
$12.02K 1,600 at 7.51
0.1%
Cluster · 3 buyers
17 Apr 2025
Delshad Jim Director
Bought
$346.00 50 at 6.92
0.1%
Cluster · 3 buyers
15 Apr 2025
Bought
$1.61K 300 at 5.38
0.1%
Cluster · 3 buyers
26 Mar 2025
Delshad Jim Director
Bought
$802.30 50 at 16.05
0.1%
Cluster · 3 buyers
Showing 1–44 of 44.