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 2.2K
Granted 29.5K · Sold 79.5K
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Granted 115.2K · Bought 25.4K · Sold 50.0K
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Granted 93.4K · Sold 88.1K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Roeder Douglas ADirector · 5 transactions | — | 2.02Mas of May 2022 | 2.2K | — | — |
| Blickenstaff Kim DDirector · 10 transactions | -21.4% | 183.0Kas of Nov 2024 | 29.5K | — | 79.5K |
| Sheridan John FPRESIDENT & CEO, Director · 109 transactions | +1715.3% | 127.4K | 239.6K | 12.5K | — |
| Vosseller LeighEVP & CHIEF FINANCIAL OFFICER · 126 transactions | — | 119.3K | 115.2K | 25.4K | 50.0K |
| Allen DickChair Emeritus · 14 transactions | +80.1% | 93.0K | 22.5K | 15.0K | 5.0K |
| Gasser Elizabeth AnneEVP, Chief Strategy Officer · 124 transactions | — | 64.9K | 81.8K | — | 24.0K |
| Hansen Shannon MarieEVP & Chief Legal Officer · 63 transactions | — | 52.8K | 47.2K | 1.9K | — |
| Morrison SusanEVP & Chief Admin. Officer · 112 transactions | +450.5% | 44.5K | 108.4K | — | 50.0K |
| Novara Mark DavidEVP & CHIEF COMMERCIAL OFFICER · 28 transactions | — | 37.7K | 78.7K | 532 | 189 |
| Twomey Christopher JDirector · 13 transactions | — | 37.1K | 22.9K | — | 9.2K |
| Carpenter RickEVP & Chief Technology Officer · 82 transactions | — | 32.9K | 49.6K | — | — |
| Howell Peyton RDirector · 14 transactions | +3047.3% | 29.8K | 23.9K | 5.0K | — |
| Kyrillos Jean-ClaudeEVP & Chief Operating Officer · 14 transactions | — | 27.7K | 30.3K | 10.5K | — |
| McGroddy-Goetz KathleenDirector · 9 transactions | +2083.1% | 26.6K | 24.8K | 1.0K | 405 |
| Sodhi RajwantDirector · 8 transactions | — | 24.3K | 24.3K | — | — |
| Robertson Rebecca BDirector · 15 transactions | +5650.5% | 22.5K | 26.6K | — | 4.5K |
| Cha MyoungilDirector · 6 transactions | — | 22.5K | 22.5K | — | — |
| Malagueira Joao Paulo FalcaoDirector · 6 transactions | — | 22.5K | 22.5K | — | — |
| Leal JamesChief Manufacturing Officer · 79 transactions | +330.7% | 16.9Kas of May 2024 | 32.7K | — | 11.2K |
| Hansen Brian BEVP & CHIEF COMMERCIAL OFFICER · 49 transactions | +101.4% | 12.8Kas of Nov 2023 | 41.2K | — | 32.2K |
| Berger David BEVP & Chief Operating Officer · 77 transactions | +46.6% | 6.6Kas of Nov 2023 | 93.4K | — | 88.1K |
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 the last 5 years: -282.3K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.