Gerst Diane G.

CIK 00016112831 companyRANCHO CUCAMONGA, CA

SEC Profile

Transactions

Companies

Filings

CIK

0001611283

Recent Transactions

50 trades

Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2025-06-02+11,402→ 11,402 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2025-06-02+5,122→ 23,756 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2024-06-03+6,864→ 6,864 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2024-06-03+3,076→ 18,634 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2023-06-05+2,716→ 15,558 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2023-06-05+7,016→ 7,016 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-07-18−1,520→ 1,336 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-18$20.08/sh+1,520→ 14,362 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-18$37.23/sh−1,520→ 12,842 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-11$20.08/sh+1,521→ 14,363 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-11$36.26/sh−1,521→ 12,842 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-07-11−1,521→ 2,856 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-05$35.00/sh−1,813→ 12,842 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-07-05$20.08/sh+1,813→ 14,655 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-07-05−1,813→ 4,377 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-06-30$20.08/sh+1,813→ 17,988 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-06-30−3,333→ 3,626 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-06-30$35.00/sh−5,146→ 12,842 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-06-30$20.03/sh+3,333→ 16,175 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-06-30−1,813→ 6,190 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2022-06-10+4,163→ 12,842 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2022-06-10+10,984→ 10,984 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2021-06-07+3,009→ 8,679 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2021-06-07+8,592→ 8,592 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2020-06-08+8,003→ 8,003 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2020-06-08+2,925→ 5,670 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Stock Option (right to buy)
2019-06-12+6,959→ 6,959 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2019-06-12+2,745→ 2,745 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-12-19$19.48/sh−523→ 30,164 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-12-12$18.96/sh−523→ 30,687 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-11-28$18.15/sh−523→ 31,210 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-11-21$18.81/sh−523→ 31,733 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-11-15$17.77/sh−523→ 32,256 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-11-07$17.93/sh−523→ 32,779 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-10-24$18.29/sh−523→ 33,302 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-10-17$18.48/sh−523→ 33,825 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-10-05$18.87/sh−8,444→ 34,348 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-10-05$11.33/sh+8,444→ 42,792 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2017-10-05−8,444→ 25,330 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-06-15$16.18/sh−146→ 34,348 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-04-14$14.80/sh−754→ 34,494 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-03-26$13.76/sh−614→ 35,248 total
Tax Payment
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-03-17$13.75/sh−1,194→ 35,862 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2017-03-16+10,861→ 37,056 total
Award
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2017-03-16+27,088→ 27,088 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2016-12-15$20.51/sh−2,940→ 26,195 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2016-08-19$14.23/sh+10,046→ 39,031 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2016-08-19−14,000→ 14,000 total
Sale
Amphastar Pharmaceuticals, Inc.$AMPH
Common Stock
2016-08-19$19.28/sh−24,046→ 28,985 total
Exercise/Conversion
Amphastar Pharmaceuticals, Inc.$AMPH
Employee Stock Option (right to buy)
2016-08-19−10,046→ 4,954 total

Companies

Amphastar Pharmaceuticals, Inc.
Corp. SVP of Quality Assurance
$AMPH

Recent Filings

Address

C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET

RANCHO CUCAMONGA, CA, 91730

View on SEC.gov