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TANDEM DIABETES CARE INC

TNDM Net selling
CIK 0001438133 #2225 in the set updated 17 Sep 2026
Bought (120 mo)
$8.76M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$287.76M
$45.62 on a plan · $140.35M straight out of an exercise
Sold at will
$147.41M
110 of 313 sales
Net
−$279.00M
−$138.65M against sales at will

By person

25 insiders · 375 transactions
4.6×

John Sheridan holds only 4.6 times base salary in stock. $3.69M of shares against $790.58K in salary for 2025.

Salary from the company's own proxy. The shares are what John Sheridan last reported holding, valued at $23.05, the price Common Stock was last bought or sold at on the open market here, on 17 Mar 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
BLICKENSTAFF KIM D
Director
$4.50M (3)
$149.33M (61)
−$144.83M
970,021
1.39%
$22.36M
HANSEN BRIAN B
EVP & CHIEF COMMERCIAL OFFICER
$25.00M (30) scheduled
−$25.00M
12,622
0.0181%
$290.94K
ROEDER DOUGLAS A
Director
$2.00M (2)
$25.78M (12)
−$23.78M
1,007,863
1.45%
$23.23M
−26.3%
Morrison Susan
EVP & Chief Admin. Officer
$18.79M (14) scheduled
−$18.79M
52,788
0.0759%
$1.22M
Vosseller Leigh
EVP & CHIEF FINANCIAL OFFICER
$530.13K (6)
$17.00M (26) scheduled
−$16.47M
77,910
0.1120%
$1.80M
+6,453%
BERGER DAVID B
EVP & Chief Operating Officer
$15.73M (50) scheduled
−$15.73M
8,273
0.0119%
$190.69K
+97.6%
Sheridan John F
PRESIDENT & CEO
$277.07K (2)
$14.15M (22) scheduled
−$13.87M
160,260
0.2303%
$3.69M
+20,499%
Allen Dick
Chair Emeritus
$608.68K (9)
$6.78M (29)
−$6.17M
57,038
0.0820%
$1.31M
+144.2%
TWOMEY CHRISTOPHER J
Director
$150.00K (2)
$5.29M (22)
−$5.14M
56,057
0.0806%
$1.29M
+141.1%
Gasser Elizabeth Anne
EVP, Chief Strategy Officer
$3.37M (4) scheduled
−$3.37M
34,505
0.0496%
$795.34K
+3,439%
Leal James
Chief Manufacturing Officer
$2.53M (15) scheduled
−$2.53M
16,876
0.0243%
$388.99K
+369.3%
ROBERTSON REBECCA B
Director
$2.19M (17) scheduled
−$2.19M
22,542
0.0324%
$519.59K
GREENE HOWARD E JR
Director
$100.00K (1)
$1.70M (7)
−$1.60M
30,000
0.0431%
$691.50K
+154.5%
Howell Peyton R
Director
$240.19K (7)
+$240.19K
29,836
0.0429%
$687.72K
Kyrillos Jean-Claude
EVP & Chief Operating Officer
$190.97K (1)
+$190.97K
30,290
0.0435%
$698.18K
Valencia Richard P.
Director
$99.06K (2)
+$99.06K
3,054
0.0044%
$70.39K
CAHILL EDWARD L
Director
$89.31K (1) scheduled
−$89.31K
23,274
0.0334%
$536.47K
−87.8%
Hansen Shannon Marie
EVP & Chief Legal Officer
$29.88K (1)
+$29.88K
33,585
0.0483%
$774.13K
McGroddy-Goetz Kathleen
Director
$21.45K (1)
$42.93K (1)
−$21.48K
26,612
0.0382%
$613.41K
Novara Mark David
EVP & CHIEF COMMERCIAL OFFICER
$12.36K (1)
$4.36K (2)
+$8.01K
40,317
0.0579%
$929.31K
Cajigas John
EVP, CFO & TREASURER
59,816
0.0860%
$1.38M
+22.1%
Carpenter Rick
EVP & Chief Technology Officer
32,148
0.0462%
$741.01K
Sodhi Rajwant
Director
24,280
0.0349%
$559.65K
Malagueira Joao Paulo Falcao
Director
22,458
0.0323%
$517.66K
Cha Myoungil
Director
22,458
0.0323%
$517.66K
Insider
Date
Role
Action
Shares
Price
Amount
Sheridan John F
11 Aug 2025
PRESIDENT & CEO
Buy
10,000
$10.23
$102.32K
Vosseller Leigh
8 Aug 2025
EVP & CHIEF FINANCIAL OFFICER
Buy indirect
13,720
$10.89
$149.40K
Kyrillos Jean-Claude
7 Mar 2025
EVP & Chief Operating Officer
Buy
10,538
$18.12
$190.97K
Novara Mark David
15 Nov 2024
EVP & CHIEF COMMERCIAL OFFICER
Buy
532
$23.24
$12.36K
Allen Dick
27 Nov 2023
Director
Buy
5,000
$18.96
$94.78K
Hansen Shannon Marie
8 Nov 2023
Chief Legal Officer
Buy indirect
1,935
$15.44
$29.88K
Vosseller Leigh
8 Nov 2023
EVP & CHIEF FINANCIAL OFFICER
Buy indirect
6,200
$15.39
$95.40K
McGroddy-Goetz Kathleen
15 Sep 2023
Director
Buy
1,000
$21.45
$21.45K
Allen Dick
18 May 2023
Director
Buy
10,000
$29.47
$294.69K
Howell Peyton R
17 May 2023
Director
Buy
3,000
$30.16
$90.49K
Vosseller Leigh
12 May 2023
EVP & CHIEF FINANCIAL OFFICER
Buy indirect
3,015
$32.77
$98.81K
Sheridan John F
9 May 2022
PRESIDENT & CEO
Buy
2,500
$69.90
$174.75K
Vosseller Leigh
9 May 2022
EVP & CHIEF FINANCIAL OFFICER
Buy
500
$70.00
$35.00K
Howell Peyton R
6 May 2022
Director
Buy
483
$74.58
$36.02K
Howell Peyton R
6 May 2022
Director
Buy
500
$75.00
$37.50K
Howell Peyton R
6 May 2022
Director
Buy
400
$75.21
$30.08K
Howell Peyton R
6 May 2022
Director
Buy
500
$74.60
$37.30K
Howell Peyton R
6 May 2022
Director
Buy
17
$74.57
$1.27K
Howell Peyton R
6 May 2022
Director
Buy
100
$75.21
$7.52K
Vosseller Leigh
6 May 2022
EVP & CHIEF FINANCIAL OFFICER
Buy
1,000
$74.90
$74.90K
Vosseller Leigh
6 May 2022
EVP & CHIEF FINANCIAL OFFICER
Buy
1,000
$76.63
$76.63K
Showing 250 of 375 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 652
Amendments (4/A) skipped 4
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 1
Sales straight out of an exercise 202
Sales at will 110
Transactions with no price 0
Shares from compensation/vesting 4,925,455
Sales filed before the plan box existed 106
History held since 16 Nov 2016