Tandem Diabetes Care, Inc. (TNDM)
Trading
Quantity
Profitability
Ownership
Largest Insider Buys in Sector
TNDM Insider Trading Activity
TNDM Median Price and Trade Amounts History Chart
Statistics of Insider Transactions
Amount of Insider Buys and Sells
Buys | $203,330 | 2 | 40 |
Sells | $1,499,800 | 3 | 60 |
Related Transactions
| Kyrillos Jean-Claude | EVP & Chief Operating Officer | 1 | $190,966 | 0 | $0 | $190,966 |
| Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | 1 | $12,364 | 0 | $0 | $12,364 |
| Allen Dick | director | 0 | $0 | 1 | $258,400 | $-258,400 |
| BLICKENSTAFF KIM D | director | 0 | $0 | 2 | $1.24M | $-1.24M |
About Tandem Diabetes Care, Inc.
Tandem Diabetes Care, Inc., a medical device company, designs, develops, and commercializes various products for people with insulin-dependent diabetes in the United States and internationally. The company's flagship product is the t:slim X2 insulin delivery system, a pump platform that comprises t:slim X2 pump, its 300-unit disposable insulin cartridge, and an infusion set. It also provides t:slim X2 insulin with Basal-IQ and control IQ technology; t:slim X2 with G5 Integration; and Tandem Device Updater, a tool that allows users to update …
Insider Activity of Tandem Diabetes Care, Inc.
Over the last 12 months, insiders at Tandem Diabetes Care, Inc. have bought $203,330 and sold $1.5M worth of Tandem Diabetes Care, Inc. stock.
On average, over the past 5 years, insiders at Tandem Diabetes Care, Inc. have bought $403,428 and sold $86.38M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Kyrillos Jean-Claude (EVP & Chief Operating Officer) — $190,966. Novara Mark David (EVP & CHIEF COMMERCIAL OFFICER) — $12,364.
The last purchase of 10,538 shares for transaction amount of $190,966 was made by Kyrillos Jean-Claude (EVP & Chief Operating Officer) on 2025‑03‑07.
List of Insider Buy and Sell Transactions, Tandem Diabetes Care, Inc.
| 2025-03-07 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | 10,538 0.0158% | $18.12 | $190,966 | +1.17% | ||
| 2024-11-21 | Sale | BLICKENSTAFF KIM D | director | 30,000 0.0465% | $31.38 | $941,400 | +10.82% | |
| 2024-11-20 | Sale | BLICKENSTAFF KIM D | director | 10,000 0.0151% | $30.00 | $300,000 | +12.82% | |
| 2024-11-15 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | 532 0.0007% | $23.24 | $12,364 | +23.24% | ||
| 2024-05-30 | Sale | Allen Dick | director | 5,000 0.0075% | $51.68 | $258,400 | -30.74% | |
| 2023-11-27 | Allen Dick | director | 5,000 0.0074% | $18.96 | $94,778 | +79.20% | ||
| 2023-11-08 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | 6,200 0.0094% | $15.39 | $95,395 | +125.06% | ||
| 2023-11-08 | Hansen Shannon Marie | Chief Legal Officer | 1,935 0.003% | $15.44 | $29,884 | +125.06% | ||
| 2023-09-15 | McGroddy-Goetz Kathleen | director | 1,000 0.0015% | $21.45 | $21,450 | +41.47% | ||
| 2023-05-18 | Allen Dick | director | 10,000 0.0154% | $29.47 | $294,687 | -10.23% | ||
| 2023-05-17 | Howell Peyton R | director | 3,000 0.0046% | $30.16 | $90,492 | -12.50% | ||
| 2023-05-12 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | 3,015 0.0046% | $32.77 | $98,805 | -19.34% | ||
| 2023-03-03 | Sale | BERGER DAVID B | EVP & Chief Operating Officer | 10,000 0.0153% | $41.19 | $411,884 | -36.11% | |
| 2022-12-16 | Sale | BERGER DAVID B | EVP & Chief Operating Officer | 10,000 0.0151% | $40.25 | $402,500 | -29.18% | |
| 2022-06-08 | Sale | BERGER DAVID B | EVP & Chief Operating Officer | 3,097 0.0048% | $65.00 | $201,305 | -35.37% | |
| 2022-05-17 | Sale | BLICKENSTAFF KIM D | 10,762 0.0209% | $92.91 | $999,897 | -40.74% | ||
| 2022-05-09 | Sheridan John F | PRESIDENT & CEO | 2,500 0.0039% | $69.90 | $174,750 | -35.25% | ||
| 2022-05-06 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | 1,000 0.0016% | $76.63 | $76,628 | -40.68% | ||
| 2022-05-06 | Howell Peyton R | 400 0.0006% | $75.21 | $30,084 | -40.68% | |||
| 2022-05-05 | Sale | TWOMEY CHRISTOPHER J | 158 0.0003% | $111.73 | $17,653 | -43.75% |
Insider Historical Profitability
| BLICKENSTAFF KIM D | director | 165190 0.2485% | $3M | 3 | 33 | +440.37% |
| Kyrillos Jean-Claude | EVP & Chief Operating Officer | 10538 0.0159% | $191,580.84 | 1 | 0 | |
| Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | 532 0.0008% | $9,671.76 | 1 | 0 | |
| Allen Dick | director | 0 0% | $0 | 6 | 9 | +337.16% |
| HLM VENTURE PARTNERS II, L.P. | 10 percent owner | 200000 0.3009% | $3.64M | 1 | 0 | <0.0001% |
TNDM Institutional Investors: Active Positions
| Increased Positions | 185 | +56.75% | 12M | +16.92% |
| Decreased Positions | 138 | -42.33% | 13M | -17.83% |
| New Positions | 44 | New | 3M | New |
| Sold Out Positions | 49 | Sold Out | 2M | Sold Out |
| Total Postitions | 373 | +14.42% | 72M | -0.9% |
TNDM Ownership Change vs Market
Institutional Investor Ownership
| Blackrock, Inc. | $258,990.00 | 17.72% | 11.7M | +587,379 | +5.29% | 2024-12-31 |
| Vanguard Group Inc | $164,722.00 | 11.27% | 7.44M | +77,451 | +1.05% | 2024-12-31 |
| State Street Corp | $61,220.00 | 4.19% | 2.77M | +109,401 | +4.12% | 2024-12-31 |
| Arrowmark Colorado Holdings Llc | $60,303.00 | 4.13% | 2.72M | +337,026 | +14.12% | 2024-12-31 |
| Gw&K Investment Management, Llc | $47,014.00 | 3.22% | 2.12M | +323,674 | +17.98% | 2024-12-31 |
| Fred Alger Management, Llc | $43,026.00 | 2.94% | 1.94M | -35,763 | -1.81% | 2024-12-31 |
| Jacobs Levy Equity Management, Inc | $36,775.00 | 2.52% | 1.66M | +1M | +189.03% | 2024-12-31 |
| Park West Asset Management Llc | $35,424.00 | 2.42% | 1.6M | +530,000 | +49.53% | 2024-12-31 |
| Stephens Investment Management Group Llc | $34,446.00 | 2.36% | 1.56M | +281,327 | +22.07% | 2024-12-31 |
| Geode Capital Management, Llc | $33,959.00 | 2.32% | 1.53M | +8,012 | +0.53% | 2024-12-31 |