Amphastar Pharmaceuticals (AMPH) Insider Trading & Ownership $38.56 +0.98 (+2.61%) (As of 08:56 AM ET) Add Compare Share Share Insider TradesStock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsStock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Amphastar Pharmaceuticals (NASDAQ:AMPH) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage27.10%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)7Amount OfInsider Selling(Last 12 Months)$22.59 M Get AMPH Insider Trade Alerts Want to know when executives and insiders are buying or selling Amphastar Pharmaceuticals stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address AMPH Insider Buying and Selling by Quarter Ad Oasis GoldNew Government Policy to Wipe Out Seniors WealthDon't wait until it's too late. The digital dollar is nearing the end of its trial period, and the window of opportunity to protect your interests is closing fast.Click Here To Get Your FREE Guide Now! Amphastar Pharmaceuticals 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 TransactionDetails6/27/2024William J PetersCFOSell3,596$40.93$147,184.28 6/10/2024Floyd F PetersenDirectorSell3,000$41.40$124,200.00 6/3/2024Floyd F PetersenDirectorSell500$42.65$21,325.00 5/1/2024Floyd F PetersenDirectorSell500$41.67$20,835.00 4/1/2024Floyd F PetersenDirectorSell500$43.43$21,715.00 3/5/2024Michael A ZasloffDirectorSell12,500$47.18$589,750.00 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. 3/1/2024Floyd F PetersenDirectorSell500$45.69$22,845.00 2/1/2024Floyd F PetersenDirectorSell500$53.10$26,550.00 1/10/2024Mary Z LuoCOOSell131,386$54.59$7,172,361.74 1/8/2024Mary Z LuoCOOSell133,644$58.93$7,875,640.92 1/2/2024Floyd F PetersenDirectorSell500$61.37$30,685.00 12/4/2023Rong ZhouEVPSell3,514$59.58$209,364.12 12/1/2023Floyd F PetersenDirectorSell500$57.90$28,950.00 12/1/2023Rong ZhouEVPSell4,316$58.58$252,831.28 11/17/2023Richard K PrinsDirectorSell4,000$55.86$223,440.00 11/13/2023Richard K PrinsDirectorSell5,000$52.50$262,500.00 11/1/2023Floyd F PetersenDirectorSell500$45.30$22,650.00 10/2/2023Floyd F PetersenDirectorSell500$45.78$22,890.00 9/6/2023William J PetersCFOSell60,743$51.75$3,143,450.25 8/28/2023Yakob LiawatidewiEVPSell28,816$53.13$1,530,994.08 8/18/2023Richard K PrinsDirectorSell2,000$52.50$105,000.00 8/15/2023Michael A ZasloffDirectorSell12,759$57.22$730,069.98 (Data available from 1/1/2013 forward) AMPH Insider Trading Activity - Frequently Asked Questions Who is on Amphastar Pharmaceuticals's Insider Roster? The list of insiders at Amphastar Pharmaceuticals includes Diane G Gerst, Floyd F Petersen, Howard Lee, Jack Y Zhang, Mary Z Luo, Michael A Zasloff, Richard K Prins, Rong Zhou, William J Peters, and Yakob Liawatidewi. Learn more on insiders at AMPH. What percentage of Amphastar Pharmaceuticals stock is owned by insiders? 27.10% of Amphastar Pharmaceuticals stock is owned by insiders. Learn more on AMPH's insider holdings. Which Amphastar Pharmaceuticals insiders have been selling company stock? The following insiders have sold AMPH shares in the last 24 months: Diane G Gerst ($175,196.06), Floyd F Petersen ($658,440.52), Howard Lee ($750,888.58), Mary Z Luo ($15,048,002.66), Michael A Zasloff ($1,636,169.98), Richard K Prins ($801,240.00), Rong Zhou ($1,404,345.40), William J Peters ($7,839,293.21), and Yakob Liawatidewi ($2,724,897.40). How much insider selling is happening at Amphastar Pharmaceuticals? Insiders have sold a total of 603,860 Amphastar Pharmaceuticals shares in the last 24 months for a total of $31,038,473.81 sold. 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A Closer Look at This High-Flying StockOccidental Petroleum: Buffett Causes OXY Stock Rebound3 Tech Stocks Insiders, Major Shareholders, and Institutions BuyThe Top 3 Stocks Sold by Insiders This Quarter This page (NASDAQ:AMPH) was last updated on 7/5/2024 by MarketBeat.com Staff From Our PartnersUrgent Alert: Is the U.S. Implementing a Digital Dollar?Our exclusive guide, "Exploring the Future of the U.S. Dollar in a Digital World," is your essential resource ...Gold Gate Capital | SponsoredBiden to Launch “FedNOW” [Move Your Money Now]Earlier this year President Biden signed the death warrant for America… Executive Order 14067 will essentia...Priority Gold | SponsoredElon to Transform U.S. Economy? 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The digital dollar is nearing the end of its trial period, and the window of o...Oasis Gold | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Amphastar Pharmaceuticals, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Amphastar Pharmaceuticals With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. 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