Luo Mary Z

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Luo Mary Z
CIK #0001611156
EDGAR Form CIK 2011 - 2026
3 [0001611156]
4 [0001611156]
Form 3/4/5 Subject 2011 - 2026
Luo Mary Z
Amphastar Pharmaceuticals Inc
Zhang Jack Y
Applied Physics & Chemistry Laboratories Inc
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-15 Tax withheld 9,784 $18.18 177,873
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-15 Tax withheld 2,908 $18.18 52,867
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-10 Tax withheld 14,785 $18.91 279,584
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-10 Tax withheld 4,395 $18.91 83,109
Amphastar Pharmaceuticals Inc AMPH
Employee Stock Option (right to buy) · derivative
2026-03-09 Grant 372,338 $0.00
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-09 Grant 72,462 $0.00
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-09 Grant 180,504 $0.00
Amphastar Pharmaceuticals Inc AMPH
Employee Stock Option (right to buy) · derivative
2026-03-09 Grant 149,472 $0.00
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-06 Tax withheld 3,077 $19.34 59,509
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-06 Tax withheld 7,773 $19.34 150,330
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-04 Tax withheld 5,769 $19.96 115,149
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2026-03-04 Tax withheld 2,432 $19.96 48,543
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-06-13 Option exercise 200,000 $13.03 2,606,000
Amphastar Pharmaceuticals Inc AMPH
Employee Stock Option (right to buy) · derivative
2025-06-13 Option exercise 200,000 $0.00
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-17 Tax withheld 7,223 $27.69 200,005
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-17 Tax withheld 16,150 $27.69 447,194
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-15 Tax withheld 4,115 $26.66 109,706
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-15 Tax withheld 9,765 $26.66 260,335
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-14 Option exercise 211,213 $14.69 3,102,719
Amphastar Pharmaceuticals Inc AMPH
Common Stock
2025-03-14 Tax withheld 162,657 $26.66 4,336,436
showing 20 of 200 most recent transactions
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