Tandem Diabetes Care, Inc.
A maker of insulin pumps and automated insulin delivery systems for people with type 1 and type 2 diabetes. Its t:slim X2 and Tandem Mobi pumps, powered by the Control-IQ+ algorithm, work with continuous glucose monitors to help predict and prevent high and low blood sugar events. The company serves nearly 500,000 people across more than 25 countries.
Granted 4.1K · Bought 1.00M · Sold 366.8K
Bought 200.0K
Granted 983.3K · Bought 2.64M · Sold 1.85M
Granted 519.4K · Bought 12.5K · Sold 265.9K
Granted 241.2K · Bought 25.4K · Sold 170.0K
Granted 58.4K · Bought 120.5K · Sold 94.6K
Granted 82.2K · Sold 24.0K
Bought 50.0K · Sold 51.8K
Granted 18.4K
Granted 47.2K · Bought 1.9K
Granted 264.6K · Sold 180.0K
Granted 78.7K · Bought 532 · Sold 189
Granted 25.1K · Bought 75.0K · Sold 52.3K
Granted 49.6K
Granted 24.8K · Bought 5.0K
Granted 30.3K · Bought 10.5K
Granted 26.0K · Bought 1.0K · Sold 405
Granted 24.3K
Granted 42.5K · Sold 20.0K
Granted 22.5K
Granted 22.5K
Granted 43.5K · Sold 21.7K
Granted 324.0K · Sold 300.3K
Granted 213.3K · Bought 2.0K · Sold 197.1K
Granted 3.3K · Sold 1.4K
Bought 3.1K
Granted 2.8K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Bochnowski James J +6 co-filers10% owner, Director, 10% owner · 2 transactions | — | 3.67Mas of Nov 2013 | — | — | — |
| Blair James C10% owner · 2 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Dovey Brian H10% owner · 2 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Halak Brian K10% owner · 4 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Schoemaker Kathleen K10% owner · 2 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Treu Jesse IDirector, 10% owner · 2 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Vitullo Nicole10% owner · 2 transactions | — | 3.24Mas of Nov 2013 | — | — | — |
| Domain Parters VII L P10% owner · 1 transaction | — | 3.19Mas of Nov 2013 | — | — | — |
| Bonderman David +2 co-filers10% owner · 1 transaction | — | 2.50Mas of Nov 2013 | — | — | — |
| Roeder Douglas ADirector · 24 transactions | — | 2.02Mas of May 2022 | 4.1K | 1.00M | 366.8K |
| Cahill Edward L +4 co-filersDirector, 10% owner, 10% owner, Previously a 10% Owner · 2 transactions | — | 1.45Mas of Nov 2013 | — | 200.0K | — |
| Blickenstaff Kim DDirector · 101 transactions | — | 183.0Kas of Nov 2024 | 983.3K | 2.64M | 1.85M |
| Smith Lonnie MDirector · 1 transaction | — | 149.2Kas of Nov 2013 | — | — | — |
| Sheridan John FPRESIDENT & CEO, Director · 205 transactions | — | 127.4K | 519.4K | 12.5K | 265.9K |
| Vosseller LeighEVP & CHIEF FINANCIAL OFFICER · 167 transactions | — | 119.3K | 241.2K | 25.4K | 170.0K |
| Allen DickChair Emeritus · 78 transactions | — | 93.0K | 58.4K | 120.5K | 94.6K |
| Gasser Elizabeth AnneEVP, Chief Strategy Officer · 126 transactions | — | 64.9K | 82.2K | — | 24.0K |
| Greene Howard E JrDirector · 10 transactions | — | 61.7Kas of Aug 2019 | — | 50.0K | 51.8K |
| Cajigas JohnEVP, CFO & TREASURER · 6 transactions | — | 59.8Kas of May 2017 | 18.4K | — | — |
| DP VII Associates LP10% owner · 1 transaction | — | 54.4Kas of Nov 2013 | — | — | — |
| Hansen Shannon MarieEVP & Chief Legal Officer · 63 transactions | — | 52.8K | 47.2K | 1.9K | — |
| Morrison SusanEVP & Chief Admin. Officer · 147 transactions | — | 44.5K | 264.6K | — | 180.0K |
| Novara Mark DavidEVP & CHIEF COMMERCIAL OFFICER · 28 transactions | — | 37.7K | 78.7K | 532 | 189 |
| Twomey Christopher JDirector · 42 transactions | — | 37.1K | 25.1K | 75.0K | 52.3K |
| Carpenter RickEVP & Chief Technology Officer · 82 transactions | — | 32.9K | 49.6K | — | — |
| Howell Peyton RDirector · 15 transactions | — | 29.8K | 24.8K | 5.0K | — |
| Kyrillos Jean-ClaudeEVP & Chief Operating Officer · 14 transactions | — | 27.7K | 30.3K | 10.5K | — |
| McGroddy-Goetz KathleenDirector · 10 transactions | — | 26.6K | 26.0K | 1.0K | 405 |
| Sodhi RajwantDirector · 8 transactions | — | 24.3K | 24.3K | — | — |
| Robertson Rebecca BDirector · 31 transactions | — | 22.5K | 42.5K | — | 20.0K |
| Cha MyoungilDirector · 6 transactions | — | 22.5K | 22.5K | — | — |
| Malagueira Joao Paulo FalcaoDirector · 6 transactions | — | 22.5K | 22.5K | — | — |
| Leal JamesChief Manufacturing Officer · 89 transactions | — | 16.9Kas of May 2024 | 43.5K | — | 21.7K |
| Hansen Brian BEVP & CHIEF COMMERCIAL OFFICER · 107 transactions | — | 12.8Kas of Nov 2023 | 324.0K | — | 300.3K |
| Berger David BEVP & Chief Operating Officer · 145 transactions | — | 6.6Kas of Nov 2023 | 213.3K | 2.0K | 197.1K |
| Cahill Edward LDirector · 9 transactions | — | 5.9Kas of Dec 2020 | 3.3K | — | 1.4K |
| Valencia Richard P.Director · 2 transactions | — | 3.1Kas of Nov 2018 | — | 3.1K | — |
| Anacone RobertEVP & CHIEF COMMERICAL OFFICER · 2 transactions | — | 2.8Kas of Nov 2014 | 2.8K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: +550.7K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.