Insider trading

Period: 120 months Stock: TNDM Plan: Discretionary × + 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.

15 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.

15 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.

15 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.

15 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.
15 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
15 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.

15 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
17 Mar 2026
Novara Mark David EVP & CHIEF COMMERCIAL OFFICER
Sold at will
$4.31K 187 at 23.05
0.5%
Not planned
11 Aug 2025
Sheridan John F PRESIDENT & CEO
Bought
$102.32K 10,000 at 10.23
10.4%
First buy in 3+ yrs
8 Aug 2025
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER · indirect
Bought
$149.40K 13,720 at 10.89
116%
Largest buy in 3 yrs
7 Mar 2025
Kyrillos Jean-Claude EVP & Chief Operating Officer
Bought
$190.97K 10,538 at 18.12
opened
First buy on file
21 Nov 2024
BLICKENSTAFF KIM D Director · indirect
Sold at will
$941.40K 30,000 at 31.38
15.4%
Not planned
20 Nov 2024
BLICKENSTAFF KIM D Director · indirect
Sold at will
$300.00K 10,000 at 30.00
4.9%
Not planned
15 Nov 2024
Novara Mark David EVP & CHIEF COMMERCIAL OFFICER
Bought
$12.36K 532 at 23.24
opened
First buy on file
30 May 2024
Allen Dick Director · indirect
Sold at will
$258.40K 5,000 at 51.68
100%
Sold half or more
27 Nov 2023
Allen Dick Director
Bought
$94.78K 5,000 at 18.96
33.4%
+33% of stake
8 Nov 2023
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER · indirect
Bought
$95.40K 6,200 at 15.39
110%
+110% of stake
8 Nov 2023
Hansen Shannon Marie Chief Legal Officer · indirect
Bought
$29.88K 1,935 at 15.44
opened
First buy on file
15 Sep 2023
Bought
$21.45K 1,000 at 21.45
12.5%
First buy on file
18 May 2023
Allen Dick Director
Bought
$294.69K 10,000 at 29.47
454%
First buy on file
17 May 2023
Howell Peyton R Director
Bought
$90.49K 3,000 at 30.16
54.1%
+54% of stake
12 May 2023
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER · indirect
Bought
$98.81K 3,015 at 32.77
114%
+114% of stake
Showing 1–15 of 15.