TNDM
insider transactionsTANDEM DIABETES CARE INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Other·G
EVP, Chief Strategy Officer
$0
7.2K sh
Own -100%
-
Grant·A
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
62.7K sh
Own New
-
Grant·A
John F Sheridan KEY
PRESIDENT & CEO
$0
191.1K sh
Own New
-
Grant·A
EVP & Chief Admin. Officer
$0
29.1K sh
Own New
-
Grant·A
EVP & Chief Operating Officer
$0
29.1K sh
Own New
-
Grant·A
EVP & Chief Legal Officer
$0
29.1K sh
Own New
-
Grant·A
EVP, Chief Strategy Officer
$0
29.1K sh
Own New
-
Grant·A
EVP & Chief Technology Officer
$0
26.0K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +56%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +56%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +64%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +49%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +64%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +42%
-
Exercise·M
Director
$0
8.8K sh
Own New
-
Exercise·M
Director
$0
8.8K sh
Own +64%
-
Exercise·M
Other
$0
8.8K sh
Own New
-
Exercise·M
Other
$0
8.8K sh
Own +45%
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
10.2K sh
Own New
-
Grant·A
Director
$0
5.1K sh
Own New
-
Grant·A
Other
$0
10.2K sh
Own New
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
10.5K sh
Own +100%
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
1.5K sh
Own +33%
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
1.5K sh
Own New
-
Grant·A
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$14.6K
1.3K sh · $10.90
Own +3%
-
Other·F
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$48.3K
3.8K sh · $12.82
Own -7%
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
10.5K sh
Own +25%
-
Other·F
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$6.9K
537 sh · $12.82
Own -1%
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
1.5K sh
Own +4%
-
Other·F
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$6.9K
540 sh · $12.82
Own -1%
-
Exercise·M
Leigh Vosseller KEY
EVP & CHIEF FINANCIAL OFFICER
$0
1.5K sh
Own +4%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
39.7K sh
Own +100%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
6.0K sh
Own +33%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
5.5K sh
Own New
-
Grant·A
John F Sheridan KEY
PRESIDENT & CEO
$14.6K
1.3K sh · $10.90
Own +1%
-
Other·F
John F Sheridan KEY
PRESIDENT & CEO
$242.9K
18.9K sh · $12.82
Own -11%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
39.7K sh
Own +30%
-
Other·F
John F Sheridan KEY
PRESIDENT & CEO
$39.0K
3.0K sh · $12.82
Own -2%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
6.0K sh
Own +5%
-
Other·F
John F Sheridan KEY
PRESIDENT & CEO
$35.7K
2.8K sh · $12.82
Own -2%
-
Exercise·M
John F Sheridan KEY
PRESIDENT & CEO
$0
5.5K sh
Own +4%
-
Exercise·M
EVP & CHIEF COMMERCIAL OFFICER
$0
10.5K sh
Own +100%
-
Exercise·M
EVP & CHIEF COMMERCIAL OFFICER
$0
76 sh
Own +33%
-
Other·F
EVP & CHIEF COMMERCIAL OFFICER
$100.7K
7.9K sh · $12.82
Own -16%
-
Exercise·M
EVP & CHIEF COMMERCIAL OFFICER
$0
10.5K sh
Own +28%
-
Other·F
EVP & CHIEF COMMERCIAL OFFICER
$731
57 sh · $12.82
Own -0%
-
Exercise·M
EVP & CHIEF COMMERCIAL OFFICER
$0
76 sh
Own +0%
-
Exercise·M
EVP & Chief Admin. Officer
$0
6.9K sh
Own +100%
-
Exercise·M
EVP & Chief Admin. Officer
$0
1.1K sh
Own +33%
-
Exercise·M
EVP & Chief Admin. Officer
$0
1.5K sh
Own New
-
Grant·A
EVP & Chief Admin. Officer
$14.6K
1.3K sh · $10.90
Own +3%
-
Other·F
EVP & Chief Admin. Officer
$25.4K
2.0K sh · $12.82
Own -4%
-
Exercise·M
EVP & Chief Admin. Officer
$0
6.9K sh
Own +16%
-
Other·F
EVP & Chief Admin. Officer
$4.0K
314 sh · $12.82
Own -1%
-
Exercise·M
EVP & Chief Admin. Officer
$0
1.1K sh
Own +3%
-
Other·F
EVP & Chief Admin. Officer
$5.5K
430 sh · $12.82
Own -1%
-
Exercise·M
EVP & Chief Admin. Officer
$0
1.5K sh
Own +4%
-
Exercise·M
EVP & Chief Operating Officer
$0
4.0K sh
Own +100%
-
Grant·A
EVP & Chief Operating Officer
$4.7K
434 sh · $10.90
Own +2%
-
Other·F
EVP & Chief Operating Officer
$27.4K
2.1K sh · $12.82
Own -7%
-
Exercise·M
EVP & Chief Operating Officer
$0
4.0K sh
Own +16%
-
Exercise·M
EVP & Chief Legal Officer
$0
7.7K sh
Own +100%
-
Exercise·M
EVP & Chief Legal Officer
$0
1.1K sh
Own +33%
-
Exercise·M
EVP & Chief Legal Officer
$0
1.4K sh
Own New
-
Grant·A
EVP & Chief Legal Officer
$20.6K
1.9K sh · $10.90
Own +7%
-
Other·F
EVP & Chief Legal Officer
$50.0K
3.9K sh · $12.82
Own -12%
-
Exercise·M
EVP & Chief Legal Officer
$0
7.7K sh
Own +31%
-
Other·F
EVP & Chief Legal Officer
$7.2K
559 sh · $12.82
Own -2%
-
Exercise·M
EVP & Chief Legal Officer
$0
1.1K sh
Own +5%
-
Other·F
EVP & Chief Legal Officer
$9.4K
732 sh · $12.82
Own -3%
-
Exercise·M
EVP & Chief Legal Officer
$0
1.4K sh
Own +6%
-
Exercise·M
EVP, Chief Strategy Officer
$0
7.7K sh
Own +100%
-
Exercise·M
EVP, Chief Strategy Officer
$0
1.1K sh
Own +33%
-
Exercise·M
EVP, Chief Strategy Officer
$0
1.5K sh
Own New
-
Grant·A
EVP, Chief Strategy Officer
$14.6K
1.3K sh · $10.90
Own +23%
-
Other·F
EVP, Chief Strategy Officer
$52.7K
4.1K sh · $12.82
Own -41%
-
Exercise·M
EVP, Chief Strategy Officer
$0
7.7K sh
Own +338%
-
Other·F
EVP, Chief Strategy Officer
$7.6K
589 sh · $12.82
Own -21%
-
Exercise·M
EVP, Chief Strategy Officer
$0
1.1K sh
Own +62%
-
Other·F
EVP, Chief Strategy Officer
$10.3K
807 sh · $12.82
Own -31%
-
Exercise·M
EVP, Chief Strategy Officer
$0
1.5K sh
Own +141%
-
Exercise·M
EVP & Chief Technology Officer
$0
6.4K sh
Own +100%
-
Exercise·M
EVP & Chief Technology Officer
$0
898 sh
Own +33%
-
Exercise·M
EVP & Chief Technology Officer
$0
1.4K sh
Own New
-
Grant·A
EVP & Chief Technology Officer
$14.6K
1.3K sh · $10.90
Own +5%
-
Other·F
EVP & Chief Technology Officer
$42.0K
3.3K sh · $12.82
Own -10%
-
Exercise·M
EVP & Chief Technology Officer
$0
6.4K sh
Own +24%
-
Other·F
EVP & Chief Technology Officer
$5.9K
457 sh · $12.82
Own -2%
-
Exercise·M
EVP & Chief Technology Officer
$0
898 sh
Own +3%
-
Other·F
EVP & Chief Technology Officer
$9.4K
732 sh · $12.82
Own -3%
-
Exercise·M
EVP & Chief Technology Officer
$0
1.4K sh
Own +6%
-
Exercise·M
EVP & Chief Operating Officer
$0
3.6K sh
Own +25%
-
Other·F
EVP & Chief Operating Officer
$39.8K
1.9K sh · $20.66
Own -7%
-
Exercise·M
EVP & Chief Operating Officer
$0
3.6K sh
Own +15%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 2, 2026 | Elizabeth Anne Gasser | Other G | 7.2K | $0 |
| May 29, 2026 | Leigh Vosseller KEY | Grant A | 62.7K | $0 |
| May 29, 2026 | John F Sheridan KEY | Grant A | 191.1K | $0 |
| May 29, 2026 | Susan Morrison | Grant A | 29.1K | $0 |
| May 29, 2026 | Jean-Claude Kyrillos | Grant A | 29.1K | $0 |
| May 29, 2026 | Shannon Marie Hansen | Grant A | 29.1K | $0 |
| May 29, 2026 | Elizabeth Anne Gasser | Grant A | 29.1K | $0 |
| May 29, 2026 | Rick Carpenter | Grant A | 26.0K | $0 |
| May 21, 2026 | Christopher J Twomey | Exercise M | 8.8K | $0 |
| May 21, 2026 | Christopher J Twomey | Exercise M | 8.8K | $0 |
| May 21, 2026 | Rajwant Sodhi | Exercise M | 8.8K | $0 |
| May 21, 2026 | Rajwant Sodhi | Exercise M | 8.8K | $0 |
| May 21, 2026 | Rebecca B Robertson | Exercise M | 8.8K | $0 |
| May 21, 2026 | Rebecca B Robertson | Exercise M | 8.8K | $0 |
| May 21, 2026 | Kathleen Mcgroddy-Goetz | Exercise M | 8.8K | $0 |
| May 21, 2026 | Kathleen Mcgroddy-Goetz | Exercise M | 8.8K | $0 |
| May 21, 2026 | Joao Paulo Falcao Malagueira | Exercise M | 8.8K | $0 |
| May 21, 2026 | Joao Paulo Falcao Malagueira | Exercise M | 8.8K | $0 |
| May 21, 2026 | Howell Peyton R | Exercise M | 8.8K | $0 |
| May 21, 2026 | Howell Peyton R | Exercise M | 8.8K | $0 |
| May 21, 2026 | Myoungil Cha | Exercise M | 8.8K | $0 |
| May 21, 2026 | Myoungil Cha | Exercise M | 8.8K | $0 |
| May 21, 2026 | Dick Allen | Exercise M | 8.8K | $0 |
| May 21, 2026 | Dick Allen | Exercise M | 8.8K | $0 |
| May 20, 2026 | Christopher J Twomey | Grant A | 10.2K | $0 |
| May 20, 2026 | Rajwant Sodhi | Grant A | 10.2K | $0 |
| May 20, 2026 | Rebecca B Robertson | Grant A | 10.2K | $0 |
| May 20, 2026 | Kathleen Mcgroddy-Goetz | Grant A | 10.2K | $0 |
| May 20, 2026 | Joao Paulo Falcao Malagueira | Grant A | 10.2K | $0 |
| May 20, 2026 | Howell Peyton R | Grant A | 10.2K | $0 |
| May 20, 2026 | Myoungil Cha | Grant A | 10.2K | $0 |
| May 20, 2026 | Sandra Beaver | Grant A | 5.1K | $0 |
| May 20, 2026 | Dick Allen | Grant A | 10.2K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 10.5K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 1.5K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 1.5K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Grant A | 1.3K | $14.6K |
| May 15, 2026 | Leigh Vosseller KEY | Other F | 3.8K | $48.3K |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 10.5K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Other F | 537 | $6.9K |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 1.5K | $0 |
| May 15, 2026 | Leigh Vosseller KEY | Other F | 540 | $6.9K |
| May 15, 2026 | Leigh Vosseller KEY | Exercise M | 1.5K | $0 |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 39.7K | $0 |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 6.0K | $0 |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 5.5K | $0 |
| May 15, 2026 | John F Sheridan KEY | Grant A | 1.3K | $14.6K |
| May 15, 2026 | John F Sheridan KEY | Other F | 18.9K | $242.9K |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 39.7K | $0 |
| May 15, 2026 | John F Sheridan KEY | Other F | 3.0K | $39.0K |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 6.0K | $0 |
| May 15, 2026 | John F Sheridan KEY | Other F | 2.8K | $35.7K |
| May 15, 2026 | John F Sheridan KEY | Exercise M | 5.5K | $0 |
| May 15, 2026 | Mark David Novara | Exercise M | 10.5K | $0 |
| May 15, 2026 | Mark David Novara | Exercise M | 76 | $0 |
| May 15, 2026 | Mark David Novara | Other F | 7.9K | $100.7K |
| May 15, 2026 | Mark David Novara | Exercise M | 10.5K | $0 |
| May 15, 2026 | Mark David Novara | Other F | 57 | $731 |
| May 15, 2026 | Mark David Novara | Exercise M | 76 | $0 |
| May 15, 2026 | Susan Morrison | Exercise M | 6.9K | $0 |
| May 15, 2026 | Susan Morrison | Exercise M | 1.1K | $0 |
| May 15, 2026 | Susan Morrison | Exercise M | 1.5K | $0 |
| May 15, 2026 | Susan Morrison | Grant A | 1.3K | $14.6K |
| May 15, 2026 | Susan Morrison | Other F | 2.0K | $25.4K |
| May 15, 2026 | Susan Morrison | Exercise M | 6.9K | $0 |
| May 15, 2026 | Susan Morrison | Other F | 314 | $4.0K |
| May 15, 2026 | Susan Morrison | Exercise M | 1.1K | $0 |
| May 15, 2026 | Susan Morrison | Other F | 430 | $5.5K |
| May 15, 2026 | Susan Morrison | Exercise M | 1.5K | $0 |
| May 15, 2026 | Jean-Claude Kyrillos | Exercise M | 4.0K | $0 |
| May 15, 2026 | Jean-Claude Kyrillos | Grant A | 434 | $4.7K |
| May 15, 2026 | Jean-Claude Kyrillos | Other F | 2.1K | $27.4K |
| May 15, 2026 | Jean-Claude Kyrillos | Exercise M | 4.0K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 7.7K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 1.1K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 1.4K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Grant A | 1.9K | $20.6K |
| May 15, 2026 | Shannon Marie Hansen | Other F | 3.9K | $50.0K |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 7.7K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Other F | 559 | $7.2K |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 1.1K | $0 |
| May 15, 2026 | Shannon Marie Hansen | Other F | 732 | $9.4K |
| May 15, 2026 | Shannon Marie Hansen | Exercise M | 1.4K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 7.7K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 1.1K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 1.5K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Grant A | 1.3K | $14.6K |
| May 15, 2026 | Elizabeth Anne Gasser | Other F | 4.1K | $52.7K |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 7.7K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Other F | 589 | $7.6K |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 1.1K | $0 |
| May 15, 2026 | Elizabeth Anne Gasser | Other F | 807 | $10.3K |
| May 15, 2026 | Elizabeth Anne Gasser | Exercise M | 1.5K | $0 |
| May 15, 2026 | Rick Carpenter | Exercise M | 6.4K | $0 |
| May 15, 2026 | Rick Carpenter | Exercise M | 898 | $0 |
| May 15, 2026 | Rick Carpenter | Exercise M | 1.4K | $0 |
| May 15, 2026 | Rick Carpenter | Grant A | 1.3K | $14.6K |
| May 15, 2026 | Rick Carpenter | Other F | 3.3K | $42.0K |
| May 15, 2026 | Rick Carpenter | Exercise M | 6.4K | $0 |
| May 15, 2026 | Rick Carpenter | Other F | 457 | $5.9K |
| May 15, 2026 | Rick Carpenter | Exercise M | 898 | $0 |
| May 15, 2026 | Rick Carpenter | Other F | 732 | $9.4K |
| May 15, 2026 | Rick Carpenter | Exercise M | 1.4K | $0 |
| Apr 15, 2026 | Jean-Claude Kyrillos | Exercise M | 3.6K | $0 |
| Apr 15, 2026 | Jean-Claude Kyrillos | Other F | 1.9K | $39.8K |
| Apr 15, 2026 | Jean-Claude Kyrillos | Exercise M | 3.6K | $0 |
About TNDM insider trading
This page tracks insider transactions for TANDEM DIABETES CARE INC (TNDM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.