Insider trading

Period: 120 months Stock: TNDM Minimum amount: $100K × + 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.

189 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.

189 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.

189 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.

189 decisions over 120 months Remove this filter
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.
189 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
189 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.

189 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
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
30 May 2024
Allen Dick Director · indirect
Sold at will
$258.40K 5,000 at 51.68
100%
Sold half or more
18 May 2023
Allen Dick Director
Bought
$294.69K 10,000 at 29.47
454%
First buy on file
3 Mar 2023
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$411.88K 10,000 at 41.19
74.8%
Sold half or more
16 Dec 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$402.50K 10,000 at 40.25
76.8%
Sold half or more
15 Dec 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$604.80K 15,000 at 40.32
83.2%
Sold half or more
8 Jun 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated 2×
$656.52K 10,097 at 65.02
80.4%
Sold half or more
17 May 2022
BLICKENSTAFF KIM D Director · indirect
Sold, plan not stated
$999.90K 10,762 at 92.91
5.0%
9 May 2022
Sheridan John F PRESIDENT & CEO
Bought
$174.75K 2,500 at 69.90
33.1%
First buy on file
6 May 2022
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Bought 2×
$151.53K 2,000 at 75.76
30.2%
First buy on file
6 May 2022
Howell Peyton R Director
Bought 6×
$149.69K 2,000 at 74.85
211%
First buy on file
2 May 2022
Sold, plan not stated 2×
$145.09K 1,500 at 96.73
100%
Sold half or more
1 Apr 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$117.88K 1,000 at 117.88
17.5%
16 Mar 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$541.84K 5,000 at 108.37
51.5%
Sold half or more
1 Mar 2022
BERGER DAVID B EVP & Chief Operating Officer
Sold, plan not stated
$112.68K 1,000 at 112.68
17.5%
1 Feb 2022
Sold, plan not stated 3×
$176.95K 1,500 at 117.97
100%
Sold half or more
1 Feb 2022
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated 3×
$117.91K 1,000 at 117.91
18.3%
3 Jan 2022
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated 2×
$149.16K 1,000 at 149.16
18.3%
27 Dec 2021
Leal James SVP, Operations
Sold, plan not stated 3×
$288.67K 1,906 at 151.45
32.2%
27 Dec 2021
Gasser Elizabeth Anne EVP, Chief Strategy Officer
Sold, plan not stated 2×
$164.07K 1,084 at 151.36
71.6%
Sold half or more
15 Dec 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated
$1.73M 12,000 at 144.25
72.9%
Sold half or more
7 Dec 2021
Gasser Elizabeth Anne EVP, Chief Strategy Officer
Sold, plan not stated
$151.62K 1,083 at 140.00
71.5%
Sold half or more
1 Dec 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated 2×
$128.44K 1,000 at 128.44
18.3%
29 Nov 2021
Leal James SVP, Operations
Sold, plan not stated 3×
$249.48K 1,905 at 130.96
32.2%
16 Nov 2021
Morrison Susan EVP & Chief Admin. Officer
Sold, plan not stated
$4.92M 34,624 at 142.21
81.1%
Sold half or more
3 Nov 2021
Gasser Elizabeth Anne EVP, Chief Strategy Officer
Sold, plan not stated
$3.05M 21,785 at 140.02
98.9%
Sold half or more
3 Nov 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated
$1.40M 10,000 at 140.05
61.9%
Sold half or more
3 Nov 2021
Morrison Susan EVP & Chief Admin. Officer
Sold, plan not stated
$763.40K 5,376 at 142.00
39.9%
1 Nov 2021
Sold, plan not stated 2×
$203.66K 1,500 at 135.77
100%
Sold half or more
1 Nov 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated 2×
$135.70K 1,000 at 135.70
19.1%
27 Oct 2021
Leal James SVP, Operations
Sold, plan not stated
$248.17K 1,904 at 130.34
33.7%
14 Oct 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated
$1.35M 10,000 at 135.09
61.9%
Sold half or more
13 Oct 2021
Morrison Susan EVP & Chief Admin. Officer
Sold, plan not stated
$1.33M 10,048 at 132.01
55.4%
Sold half or more
12 Oct 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated
$1.30M 10,000 at 130.00
61.9%
Sold half or more
12 Oct 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated
$1.29M 10,000 at 129.28
70.2%
Sold half or more
1 Oct 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated
$118.00K 1,000 at 118.00
19.1%
27 Sep 2021
Leal James SVP, Operations
Sold, plan not stated 3×
$231.88K 1,905 at 121.72
33.7%
16 Sep 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated
$812.50K 6,500 at 125.00
51.4%
Sold half or more
15 Sep 2021
BERGER DAVID B EVP, Bus Ops & Compliance
Sold, plan not stated 3×
$1.10M 9,000 at 121.99
67.9%
Sold half or more
15 Sep 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated
$437.50K 3,500 at 125.00
36.3%
13 Sep 2021
HANSEN BRIAN B EVP & CHIEF COMMERCIAL OFFICER
Sold, plan not stated 5×
$3.83M 32,180 at 119.00
83.6%
Sold half or more
13 Sep 2021
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER
Sold, plan not stated 3×
$1.21M 10,000 at 120.75
61.9%
Sold half or more
7 Sep 2021
Leal James SVP, Operations
Sold, plan not stated
$439.60K 3,574 at 123.00
48.8%
2 Sep 2021
BLICKENSTAFF KIM D Director · indirect
Sold, plan not stated 2×
$3.25M 28,700 at 113.36
12.4%
2 Sep 2021
TWOMEY CHRISTOPHER J Director · indirect
Sold, plan not stated 2×
$1.00M 8,696 at 115.00
53.6%
Sold half or more
27 Aug 2021
Leal James SVP, Operations
Sold, plan not stated 2×
$184.44K 1,667 at 110.64
30.8%
Showing 1–50 of 189. Page 1 of 4 Older →