Insiders · AMPH

AMPH insider transactions

Amphastar Pharmaceuticals Inc. (AMPH) Form 4 insider transactions - real-time wire coverage of every officer, director, and 10% owner trade.

AMPH insiders

Everyone who has filed a Form 4 or 5 at Amphastar Pharmaceuticals Inc., latest first. Follow anyone to get their next filing.

• William J PetersCFO, EVP & Treasurer, Director-$20.6M
• Rong ZhouSenior EVP, Production Center-$5.24M
• Richard K PrinsDirector-$3.81M
• Anthony T PierceDirector
• Howard LeeDirector-$1.69M
• Michael A ZasloffDirector-$2.84M
• Diane G. GerstDirector-$355K
• David Russell GaughDirector
• Gayle DeflinDirector-$494K
• Yakob LiawatidewiEVP Corp Admin Center, Director-$4.1M
• Jack Y. ZhangCEO & Chief Scientific Officer, Director, 10% owner-$12M
• Floyd F. PetersenDirector-$2.19M
• Mary Z. LuoCOO,Chief Scientist & Chairman, Director, 10% owner-$20M
• David MarisDirector
• Richard KooDirector

Recent Form 3, 4, and 5 filings for AMPH

• 3h
  CFO, EVP & TREASURER Peters William J exercised 27,000 shares at a strike of $15.05 and sold $814,669 worth of shares (28,631 units at $28.45) as part of a pre-agreed trading plan, decreasing direct ownership by 0.97% to 167,076 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 44d
  CFO, EVP & TREASURER Peters William J sold $103,475 worth of shares (4,139 units at $25.00) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 168,707 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 50d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong exercised 10,000 shares at a strike of $13.35 and sold $239,404 worth of shares (10,000 units at $23.94) (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 64d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong sold $75,306 worth of shares (3,187 units at $23.63), decreasing direct ownership by 2% to 169,203 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 86d
  Director Prins Richard K sold $161,852 worth of shares (7,973 units at $20.30), decreasing direct ownership by 21% to 29,625 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 87d
  CFO, EVP & TREASURER Peters William J exercised 5,053 shares at a strike of $19.79 and sold $183,886 worth of shares (8,180 units at $22.48) as part of a pre-agreed trading plan, decreasing direct ownership by 2% to 172,846 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 116d
  Director Pierce Anthony T was granted 7,886 shares (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 116d
  SEC Form 3 filed by new insider Pierce Anthony T

  3 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 155d
  Director Prins Richard K gifted 1,500 shares and was granted 8,143 shares, increasing direct ownership by 21% to 37,598 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 155d
  Director Lee Howard covered exercise/tax liability with 769 shares and was granted 8,143 shares, increasing direct ownership by 5% to 159,350 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 156d
  Director Zasloff Michael A was granted 8,143 shares, increasing direct ownership by 28% to 37,667 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 156d
  Director Gerst Diane G. was granted 8,143 shares, increasing direct ownership by 34% to 31,899 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 156d
  Director Gaugh David Russell was granted 8,143 shares, increasing direct ownership by 129% to 14,447 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 156d
  Director Deflin Gayle was granted 8,143 shares, increasing direct ownership by 75% to 19,057 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 234d
  EVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 1,033 shares, decreasing direct ownership by 0.84% to 121,892 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 234d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,225 shares, decreasing direct ownership by 0.71% to 171,554 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 234d
  CFO, EVP & TREASURER Peters William J covered exercise/tax liability with 1,973 shares, decreasing direct ownership by 1% to 175,063 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 234d
  CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 12,692 shares, decreasing direct ownership by 0.33% to 2,990,052 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 239d
  CFO, EVP & TREASURER Peters William J covered exercise/tax liability with 3,297 shares and was granted 58,693 shares, increasing direct ownership by 46% to 177,036 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 240d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong was granted 39,432 units of Common Srock and covered exercise/tax liability with 2,215 shares, increasing direct ownership by 27% to 172,779 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 240d
  SEC Form 4 filed by Amphastar Pharmaceuticals Inc.

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 240d
  SEC Form 4 filed by Amphastar Pharmaceuticals Inc.

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 241d
  SEC Form 4 filed by Amphastar Pharmaceuticals Inc.

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 241d
  SEC Form 4 filed by Amphastar Pharmaceuticals Inc.

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 241d
  SEC Form 4 filed by Amphastar Pharmaceuticals Inc.

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 241d
  EVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 1,144 shares, decreasing direct ownership by 1% to 89,345 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 244d
  CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 8,201 shares, decreasing direct ownership by 0.20% to 2,841,890 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 244d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,124 shares, decreasing direct ownership by 0.81% to 136,919 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 244d
  EVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 965 shares, decreasing direct ownership by 1% to 90,489 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 244d
  CFO, EVP & TREASURER Peters William J covered exercise/tax liability with 1,744 shares, decreasing direct ownership by 1% to 123,786 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 323d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong exercised 9,787 shares at a strike of $11.33 and sold $256,379 worth of shares (9,787 units at $26.20) (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 326d
  Director Petersen Floyd F. sold $107,508 worth of shares (4,163 units at $25.82), decreasing direct ownership by 6% to 71,368 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 346d
  Director Prins Richard K exercised 4,179 shares at a strike of $16.69 and sold $113,253 worth of shares (4,179 units at $27.10) (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 354d
  Director Petersen Floyd F. sold $441,837 worth of shares (16,679 units at $26.49) and exercised 16,679 shares at a strike of $16.69 (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 366d
  Director Petersen Floyd F. sold $12,633 worth of shares (500 units at $25.27), decreasing direct ownership by 0.66% to 75,531 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 400d
  Director Petersen Floyd F. sold $13,602 worth of shares (500 units at $27.20), decreasing direct ownership by 0.65% to 76,031 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 429d
  Director Petersen Floyd F. sold $15,492 worth of shares (500 units at $30.98), decreasing direct ownership by 0.65% to 76,531 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 459d
  Director Petersen Floyd F. sold $10,416 worth of shares (500 units at $20.83), decreasing direct ownership by 0.64% to 77,031 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 472d
  Director Gaugh David Russell was granted 6,304 shares (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 472d
  SEC Form 3 filed by new insider Gaugh David Russell

  3 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 491d
  Director Petersen Floyd F. sold $11,734 worth of shares (500 units at $23.47), decreasing direct ownership by 0.64% to 77,531 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 508d
  CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. exercised 200,000 shares at a strike of $13.03, increasing direct ownership by 8% to 2,847,659 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Lee Howard was granted 5,122 shares and covered exercise/tax liability with 923 shares, increasing direct ownership by 3% to 151,976 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Deflin Gayle was granted 5,122 shares, increasing direct ownership by 88% to 10,914 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Gerst Diane G. was granted 5,122 shares, increasing direct ownership by 27% to 23,756 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Prins Richard K was granted 5,122 shares, increasing direct ownership by 17% to 35,183 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Petersen Floyd F. sold $12,835 worth of shares (500 units at $25.67) and was granted 5,122 shares, increasing direct ownership by 6% to 78,031 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 520d
  Director Zasloff Michael A was granted 5,122 shares, increasing direct ownership by 21% to 29,524 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 535d
  CFO, EVP & TREASURER Peters William J covered exercise/tax liability with 273 shares, decreasing direct ownership by 0.22% to 124,985 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 553d
  Director Petersen Floyd F. sold $12,041 worth of shares (500 units at $24.08), decreasing direct ownership by 0.68% to 73,409 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 583d
  Director Petersen Floyd F. sold $14,190 worth of shares (500 units at $28.38), decreasing direct ownership by 0.67% to 73,909 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 598d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,222 shares and covered exercise/tax liability with 1,967 units of Common Srock, decreasing direct ownership by 2% to 137,497 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 598d
  CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. exercised 501,690 shares at a strike of $14.69 and covered exercise/tax liability with 426,195 shares, increasing direct ownership by 1% to 2,647,659 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 598d
  EVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 2,762 shares, decreasing direct ownership by 3% to 90,909 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 598d
  CFO, EVP & TREASURER Peters William J covered exercise/tax liability with 4,972 shares, decreasing direct ownership by 4% to 125,258 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 604d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong was granted 24,692 units of Common Srock, increasing direct ownership by 21% to 140,686 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 604d
  EVP CORP ADMIN CENTER Liawatidewi Yakob was granted 20,837 shares, increasing direct ownership by 29% to 93,671 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 604d
  CFO, EVP & TREASURER Peters William J was granted 36,747 shares, increasing direct ownership by 39% to 130,230 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 604d
  CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. was granted 165,222 shares, increasing direct ownership by 5% to 2,609,382 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
• 606d
  SENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,354 shares, decreasing direct ownership by 1% to 115,994 units (SEC Form 4)

  4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)