Alphatec (ATEC) Insider Trading & Ownership $15.54 +0.32 (+2.10%) Closing price 09/19/2025 04:00 PM EasternExtended Trading$15.11 -0.43 (-2.76%) As of 09/19/2025 07:12 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 Alphatec (NASDAQ:ATEC) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage20.90%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)7Amount OfInsider Selling(Last 12 Months)$17.90M Get ATEC Insider Trade Alerts Want to know when executives and insiders are buying or selling Alphatec stock? 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ATEC Insider Buying and Selling by Quarter Alphatec 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 TransactionDetails9/19/2025David SponselEVPSell2,555$15.34$39,193.70 9/18/2025David SponselEVPSell137,445$15.09$2,074,045.05 9/9/2025Mortimer Berkowitz IIIDirectorSell62,500$15.97$998,125.00 9/2/2025Patrick MilesCEOSell300,000$15.73$4,719,000.00 8/21/2025Scott LishCOOSell6,323$16.01$101,231.23 8/13/2025Scott LishCOOSell9,302$16.00$148,832.00 8/6/2025Craig E HunsakerEVPSell10,876$15.33$166,729.08 8/5/2025Craig E HunsakerEVPSell50,000$15.00$750,000.00 8/5/2025Scott LishCOOSell16,666$15.00$249,990.00 8/5/2025Tyson Eliot MarshallGeneral CounselSell18,092$14.91$269,751.72 Get Insider Trades Delivered To Your InboxEnter your email address below to receive a concise daily summary of insider buying activity, insider selling activity and changes in hedge fund holdings. 8/4/2025Scott LishCOOSell17,857$14.00$249,998.00 8/1/2025Scott LishCOOSell36,081$12.53$452,094.93 8/1/2025Tyson Eliot MarshallGeneral CounselSell12,878$12.00$154,536.00 7/10/2025Scott LishCOOSell3,982$12.00$47,784.00 7/10/2025Tyson Eliot MarshallGeneral CounselSell1,500$12.00$18,000.00 6/13/2025Scott LishCOOSell22,727$11.07$251,587.89 6/11/2025Karen K McginnisDirectorSell3,963$12.11$47,991.93 6/5/2025Craig E HunsakerEVPSell13,878$12.36$171,532.08 6/4/2025Craig E HunsakerEVPSell186,122$12.34$2,296,745.48 5/19/2025Scott LishCOOSell55,375$13.00$719,875.00 5/5/2025Scott LishCOOSell12,000$12.12$145,440.00 3/7/2025Patrick MilesCEOSell12,691$10.64$135,032.24 3/6/2025David SponselEVPSell33,732$10.83$365,317.56 2/27/2025Scott LishCOOSell23,183$12.03$278,891.49 2/26/2025Patrick MilesCEOSell32,393$10.89$352,759.77 2/24/2025David SponselEVPSell12,946$10.73$138,910.58 2/6/2025Scott LishCOOSell27,453$11.49$315,434.97 2/5/2025Patrick MilesCEOSell43,459$11.95$519,335.05 2/3/2025David SponselEVPSell36,256$11.42$414,043.52 1/29/2025Patrick MilesCEOSell50,000$12.03$601,500.00 1/21/2025Patrick MilesCEOSell6,687$12.00$80,244.00 1/13/2025David SponselEVPSell58,283$10.71$624,210.93 1/10/2025David SponselEVPSell238$10.00$2,380.00 (Data available from 1/1/2013 forward) ATEC Insider Trading Activity - Frequently Asked Questions Who is on Alphatec's Insider Roster? The list of insiders at Alphatec includes Craig E Hunsaker, David H Mowry, David M Demski, David Sponsel, Elizabeth Ann Altman, Evan Bakst, James L L Tullis, Jennifer N Pritzker, John Todd Koning, Karen K Mcginnis, L-5 Healthcare Partners, Llc, Mortimer Berkowitz III, Patrick Miles, Paul Segal, Quentin S Blackford, Scott Lish, and Tyson Eliot Marshall. Learn more on insiders at ATEC. What percentage of Alphatec stock is owned by insiders? 20.90% of Alphatec stock is owned by insiders. Learn more on ATEC's insider holdings. Which Alphatec insiders have been buying company stock? The following insiders have purchased ATEC shares in the last 24 months: David M Demski ($598,500.00), Evan Bakst ($202,950.00), and Quentin S Blackford ($256,600.00). How much insider buying is happening at Alphatec? Insiders have purchased a total of 115,000 ATEC shares in the last 24 months for a total of $1,058,050.00 bought. Which Alphatec insiders have been selling company stock? The following insiders have sold ATEC shares in the last 24 months: Craig E Hunsaker ($4,010,484.64), David Sponsel ($4,046,860.14), John Todd Koning ($2,098,043.30), Karen K Mcginnis ($47,991.93), Mortimer Berkowitz III ($998,125.00), Patrick Miles ($8,731,346.06), Scott Lish ($3,616,701.18), and Tyson Eliot Marshall ($1,267,485.38). How much insider selling is happening at Alphatec? Insiders have sold a total of 1,837,119 Alphatec shares in the last 24 months for a total of $24,817,037.63 sold. Alphatec Key ExecutivesMr. Patrick S. Miles (Age 58)Executive Chairman, CEO & President Compensation: $1.59M1 recent tradesMr. J. Todd Koning (Age 51)Executive VP & CFO Compensation: $815.29kMr. Craig E. Hunsaker (Age 60)Executive VP of People and Culture Compensation: $909.33k4 recent tradesMr. Scott Lish (Age 45)Chief Operating Officer 9 recent tradesMr. Tyson Eliot Marshall (Age 50)General Counsel & Corporate Secretary 3 recent tradesMr. Jonathan Allen (Age 64)Executive Vice President of Commercial Operations Dr. Luiz PimentaChief Medical OfficerMs. Kelli Mari Howell (Age 50)Executive Vice President of Clinical Strategies Mr. Robert JuddVP of Finance & Controller More Insider Trading Tools from MarketBeat Related Companies Globus Medical Insider Transactions Masimo Insider Transactions Teleflex Insider Transactions Integer Insider Transactions AtriCure Insider Transactions Integra LifeSciences Insider Transactions Orthofix Medical Insider Transactions Surmodics Insider Transactions AngioDynamics Insider Transactions Accuray Insider Transactions 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 $100 Million Buyback in Upwork Stock Follows a Strong Quarter Insiders Sell These High-Quality Stocks: Why Investors Shouldn’tCoreWeave and Madrigal's Insider Trades Flash Bullish SignalsPalantir Insider Selling: Risk Signal or Normal Activity?Loop Industries Insiders Buy Stock, Signal Confidence in Outlook This page (NASDAQ:ATEC) was last updated on 9/20/2025 by MarketBeat.com Staff From Our PartnersPrepare for the “Mar-a-Lago Accord” Money ShockWhy Are Wall Street Insiders Moving Their Money to This ONE Asset? 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