Tandem Diabetes Care (TNDM) Insider Trading & Ownership $20.72 +0.08 (+0.39%) Closing price 05/23/2025 04:00 PM EasternExtended Trading$21.02 +0.30 (+1.45%) As of 05/23/2025 07:53 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Tandem Diabetes Care (NASDAQ:TNDM) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage1.90%Number OfInsiders Buying(Last 12 Months)2Amount OfInsider Buying(Last 12 Months)$203,312.24Number OfInsiders Selling(Last 12 Months)2Amount OfInsider Selling(Last 12 Months)$858,400.00 Get TNDM Insider Trade Alerts Want to know when executives and insiders are buying or selling Tandem Diabetes Care stock? 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Email Address TNDM Insider Buying and Selling by Quarter Tandem Diabetes Care Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame * Start Date * End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails3/19/2025Josh GottheimerU.S. Congress Member (D-NJ)Sell$20.62$1,001 - $15,0003/7/2025Jean-Claude KyrillosCOOBuy10,538$18.12$190,948.56 3/4/2025Gilbert Ray Cisneros, Jr.U.S. Congress Member (D-CA)Buy$19.49$1,001 - $15,00011/20/2024Kim D BlickenstaffDirectorSell10,000$30.00$300,000.00 11/20/2024Kim D BlickenstaffDirectorSell10,000$30.00$300,000.00 11/15/2024Mark David NovaraEVPBuy532$23.24$12,363.68 8/5/2024Josh GottheimerU.S. Congress Member (D-NJ)Buy$40.79$1,001 - $15,0005/30/2024Dick AllenDirectorSell5,000$51.68$258,400.00 (Data available from 1/1/2013 forward) TNDM Insider Trading Activity - Frequently Asked Questions Who is on Tandem Diabetes Care's Insider Roster? The list of insiders at Tandem Diabetes Care includes David B Berger, Dick Allen, Jean-Claude Kyrillos, Kathleen Mcgroddy-Goetz, Kim D Blickenstaff, Leigh Vosseller, Mark David Novara, and Shannon Marie Hansen. Learn more on insiders at TNDM. What percentage of Tandem Diabetes Care stock is owned by insiders? 1.90% of Tandem Diabetes Care stock is owned by insiders. Learn more on TNDM's insider holdings. Which Tandem Diabetes Care insiders have been buying company stock? The following insiders have purchased TNDM shares in the last 24 months: Dick Allen ($94,800.00), Jean-Claude Kyrillos ($190,948.56), Kathleen Mcgroddy-Goetz ($21,450.00), Leigh Vosseller ($95,418.00), Mark David Novara ($12,363.68), and Shannon Marie Hansen ($29,876.40). How much insider buying is happening at Tandem Diabetes Care? Insiders have purchased a total of 25,205 TNDM shares in the last 24 months for a total of $444,856.64 bought. Which Tandem Diabetes Care insiders have been selling company stock? The following insiders have sold TNDM shares in the last 24 months: Dick Allen ($258,400.00), and Kim D Blickenstaff ($600,000.00). How much insider selling is happening at Tandem Diabetes Care? Insiders have sold a total of 25,000 Tandem Diabetes Care shares in the last 24 months for a total of $858,400.00 sold. Which members of congress are trading Tandem Diabetes Care? Gilbert Ray Cisneros, Jr. (D-CA) and Josh Gottheimer (D-NJ) have bought shares of Tandem Diabetes Care in the last year totaling $16,000. Josh Gottheimer (D-NJ) has sold shares totaling $8,000. Tandem Diabetes Care Key ExecutivesMr. John F. Sheridan (Age 69)President, CEO & Director Compensation: $988.35kMs. Leigh A. Vosseller (Age 50)Executive VP, CFO & Treasurer Compensation: $543.38kMs. Susan M. Morrison (Age 45)Executive VP & Chief Administrative Officer Compensation: $538.21kMr. David B. Berger Esq. (Age 54)Transitional Advisor Compensation: $543.38kMr. Brian B. Hansen (Age 56)Executive Officer Compensation: $561.74kMs. Elizabeth Anne Gasser (Age 48)Executive Vice President and Chief Strategy & Product Officer Compensation: $542.91kMr. Mark Novara (Age 49)Executive VP & Chief Commercial Officer Compensation: $169.6kMr. Rick A. Carpenter (Age 61)Chief Technical Officer Ms. Shannon M. Hansen (Age 58)Executive VP, Chief Legal, Privacy & Compliance Officer and Secretary Mr. Tom FoxChief Human Resources Officer More Insider Trading Tools from MarketBeat Related Companies GKOS Insider Trades NARI Insider Trades IRTC Insider Trades INSP Insider Trades BLCO Insider Trades TMDX Insider Trades SLNO Insider Trades PRCT Insider Trades NVST Insider Trades LIVN Insider Trades Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Turbulence for Joby Shares: What's Behind the Recent Dip?UnitedHealth Insiders Double Down: Is UNH Stock a Value Play?Sprouts Stock: Insider Sales, But Strong Bullish Signals5 Hot Small-Cap Insiders Bought at the Peak of Tariff FearsThe Top-Ranked Insider Buys From April by Market Cap This page (NASDAQ:TNDM) was last updated on 5/24/2025 by MarketBeat.com Staff From Our PartnersTrump Predicts Dollar DownfallREAD THIS VERY CAREFULLY: If you have $100,000 or more saved for retirement, this may make you VERY angry... ...Augusta Precious Metals | Sponsored$19 for a FULL YEAR of stock picks?!Invest in Musk's AI Play With Just $100 You don't need deep pockets to ride the next wave of AI wealth. ...Behind the Markets | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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