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Amphastar Pharmaceuticals, Inc.(AMPH)
Closing price · checked 8:18 PM ETAbout this dataData status
$29.37▲0.50 (1.73%)
Extended:$29.37+0.00 (+0.00%)
WatchlistChart

Insider Transactions

Buys (12mo)
30
Sells (12mo)
38
Buy Value (12mo)
$18.37M
Net (12mo)
$14.13M
DateInsiderTitleTypePriceSharesValueOwned After
Nov 4, 26PETERS WILLIAM JCFOPurchase$13.0316.00K$208.48K184.71K
Nov 5, 26PETERS WILLIAM JCFOPurchase$17.9911.00K$197.89K179.71K
Nov 4, 26PETERS WILLIAM JCFOSale$28.0316.00K$448.48K168.71K
Nov 5, 26PETERS WILLIAM JCFOSale$28.9912.63K$366.19K167.08K
Nov 5, 26PETERS WILLIAM JCFOSale$17.9911.00K$197.89K67.83K
Nov 4, 26PETERS WILLIAM JCFOSale$13.0316.00K$208.48K7.67K
Sep 21, 26PETERS WILLIAM JCFOSale$25.004.14K$103.47K168.71K
Sep 16, 26Zhou RongOfficerPurchase$13.3510.00K$133.50K179.20K
Sep 16, 26Zhou RongOfficerSale$23.9410.00K$239.40K169.20K
Sep 16, 26Zhou RongOfficerSale$13.3510.00K$133.50K19.42K
Sep 2, 26Zhou RongOfficerSale$23.633.19K$75.31K169.20K
Aug 11, 26PRINS RICHARD KCTOSale$20.307.97K$161.85K29.63K
Aug 7, 26PETERS WILLIAM JCFOPurchase$19.795.05K$100.00K181.03K
Aug 7, 26PETERS WILLIAM JCFOSale$22.488.18K$183.89K172.85K
Aug 7, 26PETERS WILLIAM JCFOSale$19.795.05K$100.00K--
Jul 9, 26Pierce Anthony TCTOPurchase$19.0216.65K$316.61K16.65K
Jul 9, 26Pierce Anthony TCTOPurchase--7.89K--7.89K
Jul 9, 26Pierce Anthony T--Sale--------
Jun 1, 26PRINS RICHARD KCTOPurchase--8.14K--37.60K
Aug 19, 24PRINS RICHARD KCTOSale--1.50K--29.45K
Jun 1, 26PRINS RICHARD KCTOPurchase$18.4217.36K$319.86K17.36K
Jun 1, 26Lee HowardCTOPurchase--8.14K--160.12K
Jun 2, 26Lee HowardCTOSale$18.45769$14.19K159.35K
Jun 1, 26Lee HowardCTOPurchase$18.4217.36K$319.86K17.36K
Jun 1, 26ZASLOFF MICHAEL ACTOPurchase--8.14K--37.67K
Jun 1, 26ZASLOFF MICHAEL ACTOPurchase$18.4217.36K$319.86K17.36K
Jun 1, 26Gerst Diane G.CTOPurchase--8.14K--31.90K
Jun 1, 26Gerst Diane G.CTOPurchase$18.4217.36K$319.86K17.36K
Jun 1, 26Gaugh David RussellCTOPurchase$18.4217.36K$319.86K17.36K
Jun 1, 26Gaugh David RussellCTOPurchase--8.14K--14.45K
Jun 1, 26Deflin GayleCTOPurchase--8.14K--19.06K
Jun 1, 26Deflin GayleCTOPurchase$18.4217.36K$319.86K17.36K
Mar 15, 26Liawatidewi YakobCTOSale$18.181.03K$18.78K121.89K
Mar 15, 26Zhou RongOfficerSale$18.181.23K$22.27K171.55K
Mar 15, 26PETERS WILLIAM JCFOSale$18.181.97K$35.87K175.06K
Mar 15, 26Zhang Jack Y.CEOSale$18.189.78K$177.87K2.99M
Mar 15, 26Zhang Jack Y.CEOSale$18.182.91K$52.87K1.25M
Mar 9, 26PETERS WILLIAM JCFOPurchase--58.69K--180.33K
Mar 10, 26PETERS WILLIAM JCFOSale$18.913.30K$62.35K177.04K
Mar 9, 26PETERS WILLIAM JCFOPurchase$19.21121.07K$2.33M121.07K
Mar 9, 26Zhou RongOfficerPurchase--39.43K--174.99K
Mar 10, 26Zhou RongOfficerSale$18.912.21K$41.89K172.78K
Mar 9, 26Zhou RongOfficerPurchase$19.2181.34K$1.56M81.34K
Mar 9, 26Liawatidewi YakobCTOPurchase--35.45K--124.80K
Mar 10, 26Liawatidewi YakobCTOSale$18.911.87K$35.36K122.92K
Mar 9, 26Liawatidewi YakobCTOPurchase$19.2173.13K$1.40M73.13K
Mar 9, 26Zhang Jack Y.CEOPurchase--180.50K--3.01M
Mar 10, 26Zhang Jack Y.CEOSale$18.9114.79K$279.58K3.00M
Mar 9, 26Zhang Jack Y.CEOPurchase--72.46K--1.25M
Mar 10, 26Zhang Jack Y.CEOSale$18.914.39K$83.11K1.25M
Mar 9, 26Zhang Jack Y.CEOPurchase$19.21372.34K$7.15M372.34K
Mar 9, 26Zhang Jack Y.CEOPurchase$19.21149.47K$2.87M149.47K
Mar 6, 26PETERS WILLIAM JCFOSale$19.342.15K$41.50K121.64K
Mar 6, 26Zhou RongOfficerSale$19.341.36K$26.24K135.56K
Mar 6, 26Liawatidewi YakobCTOSale$19.341.14K$22.12K89.34K
Mar 6, 26Zhang Jack Y.CEOSale$19.347.77K$150.33K2.83M
Mar 6, 26Zhang Jack Y.CEOSale$19.343.08K$59.51K1.18M
Mar 4, 26Zhang Jack Y.CEOSale$19.965.77K$115.15K2.84M
Mar 4, 26Zhang Jack Y.CEOSale$19.962.43K$48.54K1.18M
Mar 4, 26Zhou RongOfficerSale$19.961.12K$22.44K136.92K
Mar 4, 26Liawatidewi YakobCTOSale$19.96965$19.26K90.49K
Mar 4, 26PETERS WILLIAM JCFOSale$19.961.74K$34.81K123.79K
Dec 17, 25Zhou RongOfficerPurchase$11.339.79K$110.89K147.83K
Dec 17, 25Zhou RongOfficerSale$26.209.79K$256.38K138.04K
Dec 17, 25Zhou RongOfficerSale$11.339.79K$110.89K--
Dec 11, 25Petersen Floyd F.CTOSale$25.691.74K$44.62K73.79K
Dec 12, 25Petersen Floyd F.CTOSale$25.922.43K$62.89K71.37K
Nov 25, 25PRINS RICHARD KCTOPurchase$16.694.18K$69.75K39.36K
Nov 25, 25PRINS RICHARD KCTOSale$27.104.18K$113.25K35.18K
Nov 25, 25PRINS RICHARD KCTOSale$16.694.18K$69.75K--
Nov 13, 25Petersen Floyd F.CTOPurchase$16.6916.68K$278.37K92.21K
Nov 13, 25Petersen Floyd F.CTOSale$26.4916.68K$441.84K75.53K
Nov 13, 25Petersen Floyd F.CTOSale$16.6916.68K$278.37K--
Nov 3, 25Petersen Floyd F.CTOSale$25.27500$12.63K75.53K
Oct 1, 25Petersen Floyd F.CTOSale$27.20500$13.60K76.03K
Sep 2, 25Petersen Floyd F.CTOSale$30.98500$15.49K76.53K
Aug 1, 25Petersen Floyd F.CTOSale$20.83500$10.42K77.03K
Jul 18, 25Gaugh David RussellCTOPurchase$20.6213.99K$288.41K13.99K
Jul 18, 25Gaugh David RussellCTOPurchase--6.30K--6.30K
Jul 18, 25Gaugh David Russell--Sale--------
Jul 2, 25Petersen Floyd F.CTOSale$23.47500$11.73K77.53K
Jun 13, 25Zhang Jack Y.CEOPurchase$13.03200.00K$2.61M2.85M
Jun 13, 25Zhang Jack Y.CEOSale$13.03200.00K$2.61M205.00K
Jun 2, 25Lee HowardCTOPurchase--5.12K--152.90K
Jun 3, 25Lee HowardCTOSale$26.01923$24.01K151.98K
Jun 2, 25Lee HowardCTOPurchase$25.3811.40K$289.38K11.40K
Jun 2, 25Deflin GayleCTOPurchase$25.3811.40K$289.38K11.40K
Jun 2, 25Deflin GayleCTOPurchase--5.12K--10.91K
Jun 2, 25Gerst Diane G.CTOPurchase--5.12K--23.76K
Jun 2, 25Gerst Diane G.CTOPurchase$25.3811.40K$289.38K11.40K
Jun 2, 25PRINS RICHARD KCTOPurchase--5.12K--35.18K
Jun 2, 25PRINS RICHARD KCTOPurchase$25.3811.40K$289.38K11.40K
Jun 2, 25Petersen Floyd F.CTOPurchase--5.12K--78.03K
Jun 2, 25Petersen Floyd F.CTOSale$25.67500$12.84K72.91K
Jun 2, 25Petersen Floyd F.CTOPurchase$25.3811.40K$289.38K11.40K
Jun 2, 25ZASLOFF MICHAEL ACTOPurchase--5.12K--29.52K
Jun 2, 25ZASLOFF MICHAEL ACTOPurchase$25.3811.40K$289.38K11.40K
May 19, 25PETERS WILLIAM JCFOSale$24.79273$6.77K124.98K
May 1, 25Petersen Floyd F.CTOSale$24.08500$12.04K73.41K
Apr 1, 25Petersen Floyd F.CTOSale$28.38500$14.19K73.91K
Mar 15, 25Zhou RongOfficerSale$26.661.22K$32.58K139.46K
Mar 17, 25Zhou RongOfficerSale$27.691.97K$54.47K137.50K
Mar 14, 25Zhang Jack Y.CEOPurchase$14.69290.48K$4.27M2.90M
Mar 14, 25Zhang Jack Y.CEOSale$26.66226.28K$6.03M2.67M
Mar 15, 25Zhang Jack Y.CEOSale$26.669.77K$260.33K2.66M
Mar 17, 25Zhang Jack Y.CEOSale$27.6916.15K$447.19K2.65M
Mar 14, 25Zhang Jack Y.CEOPurchase$14.69211.21K$3.10M1.36M
Mar 14, 25Zhang Jack Y.CEOSale$26.66162.66K$4.34M1.20M
Mar 15, 25Zhang Jack Y.CEOSale$26.664.12K$109.71K1.19M
Mar 17, 25Zhang Jack Y.CEOSale$27.697.22K$200.00K1.19M
Mar 14, 25Zhang Jack Y.CEOSale$14.69211.21K$3.10M--
Mar 15, 25Liawatidewi YakobCTOSale$26.661.03K$27.49K92.64K
Mar 17, 25Liawatidewi YakobCTOSale$27.691.73K$47.93K90.91K
Mar 15, 25PETERS WILLIAM JCFOSale$26.661.97K$52.47K128.26K
Mar 17, 25PETERS WILLIAM JCFOSale$27.693.00K$83.18K125.26K
Mar 10, 25Zhou RongOfficerPurchase--24.69K--140.69K
Mar 10, 25Zhou RongOfficerPurchase$28.4152.44K$1.49M52.44K
Mar 10, 25Liawatidewi YakobCTOPurchase--20.84K--93.67K
Mar 10, 25Liawatidewi YakobCTOPurchase$28.4144.25K$1.26M44.25K
Mar 10, 25PETERS WILLIAM JCFOPurchase--36.75K--130.23K
Mar 10, 25PETERS WILLIAM JCFOPurchase$28.4178.04K$2.22M78.04K
Mar 10, 25Zhang Jack Y.CEOPurchase--116.23K--2.61M
Mar 10, 25Zhang Jack Y.CEOPurchase--49.00K--1.15M
Mar 10, 25Zhang Jack Y.CEOPurchase$28.41246.82K$7.01M246.82K
Mar 10, 25Zhang Jack Y.CEOPurchase$28.41104.05K$2.96M104.05K
Mar 6, 25Zhou RongOfficerSale$28.321.35K$38.35K115.99K
Mar 6, 25PETERS WILLIAM JCFOSale$28.322.14K$60.63K93.48K
Mar 6, 25Liawatidewi YakobCTOSale$28.321.14K$32.31K72.83K
Mar 6, 25Zhang Jack Y.CEOSale$28.329.64K$273.15K2.49M
Mar 6, 25Zhang Jack Y.CEOSale$28.323.07K$86.91K1.10M
Mar 6, 25Petersen Floyd F.CTOSale$27.991.00K$27.99K74.41K
Mar 4, 25PETERS WILLIAM JCFOPurchase$13.357.49K$99.99K101.59K
Mar 4, 25PETERS WILLIAM JCFOSale$27.544.23K$116.52K97.36K
Mar 4, 25PETERS WILLIAM JCFOSale$27.621.74K$48.03K95.62K
Mar 4, 25PETERS WILLIAM JCFOSale$13.357.49K$99.99K--
Dec 13, 24Zhou RongOfficerPurchase$11.338.00K$90.64K126.47K
Dec 12, 24Zhou RongOfficerPurchase$11.337.00K$79.31K125.47K
Dec 12, 24Zhou RongOfficerSale$44.437.00K$310.98K118.47K
Dec 13, 24Zhou RongOfficerSale$45.238.00K$361.84K118.47K
Dec 12, 24Zhou RongOfficerSale$11.337.00K$79.31K17.79K
Dec 13, 24Zhou RongOfficerSale$11.338.00K$90.64K9.79K
Dec 9, 24PRINS RICHARD KCTOPurchase$19.5210.00K$195.20K40.47K
Dec 9, 24PRINS RICHARD KCTOSale$43.7710.00K$437.70K30.47K
Dec 9, 24PRINS RICHARD KCTOSale--410--30.06K
Dec 9, 24PRINS RICHARD KCTOSale$19.5210.00K$195.20K--
Nov 12, 24Zhou RongOfficerPurchase$14.956.89K$103.05K125.28K
Nov 12, 24Zhou RongOfficerSale$48.886.89K$336.93K118.39K
Nov 12, 24Zhou RongOfficerSale$14.956.89K$103.05K--
Nov 12, 24PRINS RICHARD KCTOPurchase$16.692.50K$41.73K36.47K
Nov 12, 24PRINS RICHARD KCTOSale$48.805.00K$243.99K31.47K
Nov 12, 24PRINS RICHARD KCTOSale--1.00K--30.47K
Nov 12, 24PRINS RICHARD KCTOSale$16.692.50K$41.73K4.18K
Nov 11, 24Zhang Jack Y.CEOSale--125.00K--2.51M
Nov 11, 24Zhang Jack Y.CEOSale--125.00K--1.10M
Nov 6, 24Liawatidewi YakobCTOPurchase$13.035.21K$67.94K80.15K
Nov 6, 24Liawatidewi YakobCTOSale$52.055.21K$271.39K74.94K
Nov 6, 24Liawatidewi YakobCTOSale$13.035.21K$67.94K10.96K
Nov 6, 24PETERS WILLIAM JCFOPurchase$13.037.43K$96.76K101.53K
Nov 6, 24PETERS WILLIAM JCFOSale$52.057.43K$386.52K94.10K
Nov 6, 24PETERS WILLIAM JCFOSale$13.037.43K$96.76K23.67K
Sep 13, 24Zhou RongOfficerPurchase$14.953.00K$44.85K121.39K
Sep 13, 24Zhou RongOfficerSale$48.263.00K$144.78K118.39K
Sep 13, 24Zhou RongOfficerSale$14.953.00K$44.85K6.89K
Sep 13, 24Zhang Jack Y.CEOPurchase$14.69100.00K$1.47M2.63M
Sep 13, 24Zhang Jack Y.CEOSale$14.69100.00K$1.47M290.48K
Sep 5, 24Petersen Floyd F.CTOSale$46.473.00K$139.42K75.41K
Aug 26, 24Zhou RongOfficerPurchase$14.954.00K$59.80K122.39K
Aug 26, 24Zhou RongOfficerSale$48.354.00K$193.40K118.39K
Aug 26, 24Zhou RongOfficerSale$14.954.00K$59.80K9.89K
Aug 12, 24PRINS RICHARD KCTOPurchase$19.527.18K$140.19K51.07K
Aug 12, 24PRINS RICHARD KCTOPurchase$20.086.00K$120.56K43.89K
Aug 12, 24PRINS RICHARD KCTOPurchase$20.033.92K$78.42K37.89K
Aug 12, 24PRINS RICHARD KCTOSale$43.0717.10K$736.55K33.97K
Aug 12, 24PRINS RICHARD KCTOSale$19.527.18K$140.19K10.00K
Aug 12, 24PRINS RICHARD KCTOSale$20.033.92K$78.42K10.00K
Aug 12, 24PRINS RICHARD KCTOSale$20.086.00K$120.56K10.00K
Jul 31, 24PETERS WILLIAM JCFOPurchase$20.2310.28K$208.00K104.39K
Jul 31, 24PETERS WILLIAM JCFOSale$44.2310.28K$454.77K94.10K
Jul 31, 24PETERS WILLIAM JCFOSale$20.2310.28K$208.00K4.94K
Jun 27, 24PETERS WILLIAM JCFOSale$40.852.96K$120.95K94.74K
Jun 27, 24PETERS WILLIAM JCFOSale$41.29635$26.22K94.10K
Jun 10, 24Zhang Jack Y.CEOPurchase$14.69100.00K$1.47M2.53M
Jun 10, 24Zhang Jack Y.CEOSale$14.69100.00K$1.47M390.48K
Jun 10, 24Petersen Floyd F.CTOSale$41.403.00K$124.20K78.41K
Jun 3, 24Lee HowardCTOPurchase--3.08K--148.36K
Jun 5, 24Lee HowardCTOSale$42.04579$24.34K147.78K
Jun 3, 24Lee HowardCTOPurchase$42.256.86K$290.00K6.86K
Jun 3, 24Gerst Diane G.CTOPurchase--3.08K--18.63K
Jun 3, 24Gerst Diane G.CTOPurchase$42.256.86K$290.00K6.86K
Jun 3, 24Deflin GayleCTOPurchase$42.256.86K$290.00K6.86K
Jun 3, 24Deflin GayleCTOPurchase--3.08K--5.79K
Jun 3, 24Petersen Floyd F.CTOPurchase--3.08K--81.41K
Jun 3, 24Petersen Floyd F.CTOSale$42.65500$21.33K78.33K
Jun 3, 24Petersen Floyd F.CTOPurchase$42.256.86K$290.00K6.86K
Jun 4, 24Liawatidewi YakobCTOSale$42.22272$11.48K74.94K
Jun 3, 24PRINS RICHARD KCTOPurchase--3.08K--33.97K
Jun 3, 24PRINS RICHARD KCTOPurchase$42.256.86K$290.00K6.86K
Jun 3, 24ZASLOFF MICHAEL ACTOPurchase--3.08K--24.40K
Jun 3, 24ZASLOFF MICHAEL ACTOPurchase$42.256.86K$290.00K6.86K
May 19, 24PETERS WILLIAM JCFOSale$43.48387$16.83K97.27K

Latest filing Checked hourly; insiders must file within 2 business days of a tradeAbout this data

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Data is provided for informational purposes only and does not constitute investment advice. Past performance is not indicative of future results.