NASDAQ:TNDM

Tandem Diabetes Care Stock Insider Trading

Healthcare > Medical - Devices

Buy TNDM

*Your capital is at risk

$19.50

+0.490 (+2.58%)

At Close: Jul 31, 2026

Tandem Diabetes Care Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 89.53. In total, the insiders bought 825.7K and sold 60.28K TNDM shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	89.53
● Buy	825.7K shares
● Sell	60.28K shares
80% Buy Activity Moderate Negative Correlation
Buy Signal High Confidence May 29, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 89.53. Confidence increased due to high data reliability score of 100. Supported by overwhelming buy-side pressure (80% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
May 15, 2026 Sell	Common Stock F-InKind	Morrison Susan EVP & Chief Admin. Officer	Officer	314 Value: $4K
May 15, 2026 Buy	Common Stock M-Exempt	Carpenter Rick EVP & Chief Technology Officer	Officer	6 439 Value: $82.5K
May 15, 2026 Sell	Common Stock F-InKind	Carpenter Rick EVP & Chief Technology Officer	Officer	3 277 Value: $42.0K
May 15, 2026 Buy	Common Stock M-Exempt	Carpenter Rick EVP & Chief Technology Officer	Officer	1 437 Value: $18.4K
May 15, 2026 Sell	Common Stock F-InKind	Carpenter Rick EVP & Chief Technology Officer	Officer	732 Value: $9K
May 15, 2026 Buy	Restricted Stock Unit M-Exempt	Carpenter Rick EVP & Chief Technology Officer	Officer	898 Value: $11.5K
May 15, 2026 Buy	Restricted Stock Unit M-Exempt	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	7 667 Value: $98.3K
May 15, 2026 Buy	Common Stock A-Award	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	1 337 Value: $14.6K
May 15, 2026 Sell	Common Stock F-InKind	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	4 114 Value: $52.7K
May 15, 2026 Buy	Common Stock M-Exempt	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	1 097 Value: $14.1K
May 15, 2026 Sell	Common Stock F-InKind	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	589 Value: $8K
May 15, 2026 Sell	Common Stock F-InKind	Gasser Elizabeth Anne EVP, Chief Strategy Officer	Officer	807 Value: $10.3K
May 15, 2026 Buy	Common Stock M-Exempt	Hansen Shannon Marie EVP & Chief Legal Officer	Officer	7 667 Value: $98.3K
May 15, 2026 Sell	Common Stock F-InKind	Hansen Shannon Marie EVP & Chief Legal Officer	Officer	3 901 Value: $50.0K
May 15, 2026 Buy	Common Stock M-Exempt	Hansen Shannon Marie EVP & Chief Legal Officer	Officer	1 097 Value: $14.1K
May 15, 2026 Sell	Common Stock F-InKind	Hansen Shannon Marie EVP & Chief Legal Officer	Officer	559 Value: $7K
May 15, 2026 Sell	Common Stock F-InKind	Morrison Susan EVP & Chief Admin. Officer	Officer	1 980 Value: $25.4K
May 15, 2026 Buy	Common Stock M-Exempt	Morrison Susan EVP & Chief Admin. Officer	Officer	1 097 Value: $14.1K
May 15, 2026 Buy	Restricted Stock Unit M-Exempt	Sheridan John F President & CEO	CEO / President	5 472 Value: $70.2K
May 15, 2026 Buy	Common Stock A-Award	Morrison Susan EVP & Chief Admin. Officer	Officer	1 336 Value: $14.6K
May 15, 2026 Buy	Common Stock M-Exempt	Morrison Susan EVP & Chief Admin. Officer	Officer	6 923 Value: $88.8K
May 15, 2026 Buy	Restricted Stock Unit M-Exempt	Kyrillos Jean-claude EVP & Chief Operating Officer	C-Suite Officer	4 038 Value: $51.8K
May 15, 2026 Sell	Common Stock F-InKind	Kyrillos Jean-claude EVP & Chief Operating Officer	C-Suite Officer	2 139 Value: $27.4K
May 15, 2026 Buy	Common Stock A-Award	Kyrillos Jean-claude EVP & Chief Operating Officer	C-Suite Officer	434 Value: $5K
May 15, 2026 Buy	Common Stock M-Exempt	Kyrillos Jean-claude EVP & Chief Operating Officer	C-Suite Officer	4 038 Value: $51.8K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT TANDEM DIABETES CARE

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 technolo...

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