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AMPH – amphastar pharmaceuticals, inc. (US:NASDAQ)
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AMPH
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Main News & Impact Reports
Date
Time
Symbol
Headline
Impact
12/3
03:43 pm
amph
Amphastar Pharmaceuticals (AMPH) Stock Trades Up, Here Is Why [Yahoo! Finance]
Neutral
Report
Amphastar Pharmaceuticals (AMPH) Stock Trades Up, Here Is Why [Yahoo! Finance]
11/29
10:57 am
amph
Amphastar Pharmaceuticals (AMPH) Jumps 6.5% After Q3 Beat and Conference Reveal—Has the Investment Case Shifted? [Yahoo! Finance]
Low
Report
Amphastar Pharmaceuticals (AMPH) Jumps 6.5% After Q3 Beat and Conference Reveal—Has the Investment Case Shifted? [Yahoo! Finance]
11/28
09:35 pm
amph
A Look at Amphastar Pharmaceuticals (AMPH) Valuation Following Strong Quarterly Results and Pipeline Progress [Yahoo! Finance]
Low
Report
A Look at Amphastar Pharmaceuticals (AMPH) Valuation Following Strong Quarterly Results and Pipeline Progress [Yahoo! Finance]
11/18
07:20 am
amph
Amphastar Pharmaceuticals (NASDAQ:AMPH) was downgraded by analysts at Zacks Research from a "strong-buy" rating to a "hold" rating.
Low
Report
Amphastar Pharmaceuticals (NASDAQ:AMPH) was downgraded by analysts at Zacks Research from a "strong-buy" rating to a "hold" rating.
11/14
10:48 pm
amph
Why Amphastar Pharmaceuticals (AMPH) Is Up 8.4% After Strong Q3 Revenue and Key FDA Approvals [Yahoo! Finance]
Low
Report
Why Amphastar Pharmaceuticals (AMPH) Is Up 8.4% After Strong Q3 Revenue and Key FDA Approvals [Yahoo! Finance]
11/12
03:35 pm
amph
Why Amphastar Pharmaceuticals (AMPH) Stock Is Trading Up Today [Yahoo! Finance]
Low
Report
Why Amphastar Pharmaceuticals (AMPH) Stock Is Trading Up Today [Yahoo! Finance]
11/12
04:43 am
amph
Generic Pharmaceuticals Q3 Earnings: Amphastar Pharmaceuticals (NASDAQ:AMPH) Simply the Best [Yahoo! Finance]
Low
Report
Generic Pharmaceuticals Q3 Earnings: Amphastar Pharmaceuticals (NASDAQ:AMPH) Simply the Best [Yahoo! Finance]
11/10
03:56 pm
amph
Why Are Amphastar Pharmaceuticals (AMPH) Shares Soaring Today [Yahoo! Finance]
Low
Report
Why Are Amphastar Pharmaceuticals (AMPH) Shares Soaring Today [Yahoo! Finance]
Date
Time
Symbol
Company Name
Action
%Chg
11/6/2025
04:05 pm
AMPH
amphastar pharmaceuticals, inc.
BEAT
Report
-0.8%
amphastar pharmaceuticals, inc.
8/7/2025
04:05 pm
AMPH
amphastar pharmaceuticals, inc.
BEAT
Report
8.2%
amphastar pharmaceuticals, inc.
5/7/2025
04:05 pm
AMPH
amphastar pharmaceuticals, inc.
BEAT
Report
0.9%
amphastar pharmaceuticals, inc.
5/7/2025
04:05 pm
AMPH
amphastar pharmaceuticals, inc.
BEAT
Report
0.9%
amphastar pharmaceuticals, inc.
Date
Time
Action
From
To
Firm
Impact
%Chg
Date
Time
Symbol
Headline
Impact
11/28
01:23 pm
amph
Form 144 Amphastar Pharmaceutical Filed by: Zhou Rong
Neutral
Report
Form 144 Amphastar Pharmaceutical Filed by: Zhou Rong
11/25
07:39 pm
amph
Form 4 Amphastar Pharmaceutical For: Nov 25 Filed by: PRINS RICHARD K
Low
Report
Form 4 Amphastar Pharmaceutical For: Nov 25 Filed by: PRINS RICHARD K
11/25
05:05 pm
amph
Form 144 Amphastar Pharmaceutical Filed by: PRINS RICHARD K
Low
Report
Form 144 Amphastar Pharmaceutical Filed by: PRINS RICHARD K
11/17
04:16 pm
amph
Form 4 Amphastar Pharmaceutical For: Nov 13 Filed by: Petersen Floyd F.
Low
Report
Form 4 Amphastar Pharmaceutical For: Nov 13 Filed by: Petersen Floyd F.
11/6
04:38 pm
amph
Form 10-Q Amphastar Pharmaceutical For: Sep 30
Medium
Report
Form 10-Q Amphastar Pharmaceutical For: Sep 30
11/6
04:27 pm
amph
Form 8-K Amphastar Pharmaceutical For: Nov 06
Medium
Report
Form 8-K Amphastar Pharmaceutical For: Nov 06
11/5
04:20 pm
amph
Form 4 Amphastar Pharmaceutical For: Nov 03 Filed by: Petersen Floyd F.
Medium
Report
Form 4 Amphastar Pharmaceutical For: Nov 03 Filed by: Petersen Floyd F.
11/3
04:24 pm
amph
Form 144 Amphastar Pharmaceutical Filed by: Petersen Floyd F.
Low
Report
Form 144 Amphastar Pharmaceutical Filed by: Petersen Floyd F.
Stock Stats
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Main News & Impact Reports
TOP News Gainers
3/16
Form 10-K Amphastar Pharmaceutical For: Dec 31
11.3%
4/27 Amphastar Pharmaceuticals, Inc. Receives FDA Approval for Epinephrine Injection, USP 30mg/30mL (1mg/mL) Multiple Dose Vial 7.5%
8/7 Q2/2019 6/30/2019 EPS 0.080 ZacksConsensus 0.030 ActVsEst 0.050 - Beat 7.0%
11/8 Amphastar Pharmaceuticals Inc (AMPH) Q3 2019 Earnings Call Transcript [The Motley Fool] 4.9%
3/18 Form 4 Amphastar Pharmaceutical For: Mar 16 Filed by: Liawatidewi Yakob 4.5%
3/3 Form 4 Amphastar Pharmaceutical For: Mar 02 Filed by: Petersen Floyd F. 3.9%
4/9 Amphastar Pharmaceuticals to Present at the 19th Annual Needham Virtual Healthcare Conference 3.8%
8/16 Form 4 Amphastar Pharmaceutical For: Aug 15 Filed by: PETERS WILLIAM J 3.4%
9/9 Form 4 Amphastar Pharmaceutical For: Sep 05 Filed by: Liawatidewi Yakob 3.1%
3/12 Q4/2019 12/31/2019 EPS 0.070 ZacksConsensus 0.050 ActVsEst 0.020 - Beat 2.3%
4/27 Amphastar Pharmaceuticals, Inc. Receives FDA Approval for Epinephrine Injection, USP 30mg/30mL (1mg/mL) Multiple Dose Vial 7.5%
8/7 Q2/2019 6/30/2019 EPS 0.080 ZacksConsensus 0.030 ActVsEst 0.050 - Beat 7.0%
11/8 Amphastar Pharmaceuticals Inc (AMPH) Q3 2019 Earnings Call Transcript [The Motley Fool] 4.9%
3/18 Form 4 Amphastar Pharmaceutical For: Mar 16 Filed by: Liawatidewi Yakob 4.5%
3/3 Form 4 Amphastar Pharmaceutical For: Mar 02 Filed by: Petersen Floyd F. 3.9%
4/9 Amphastar Pharmaceuticals to Present at the 19th Annual Needham Virtual Healthcare Conference 3.8%
8/16 Form 4 Amphastar Pharmaceutical For: Aug 15 Filed by: PETERS WILLIAM J 3.4%
9/9 Form 4 Amphastar Pharmaceutical For: Sep 05 Filed by: Liawatidewi Yakob 3.1%
3/12 Q4/2019 12/31/2019 EPS 0.070 ZacksConsensus 0.050 ActVsEst 0.020 - Beat 2.3%
TOP News Decliners
3/17
Form 4 Amphastar Pharmaceutical For: Mar 15 Filed by: Zhou Rong
-11.9%
3/12 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at BidaskClub from a "sell" rating to a "hold" rating. -9.3%
2/28 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at BidaskClub from a "strong sell" rating to a "sell" rating. -9.3%
3/13 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at Zacks Investment Research from a "hold" rating to a "buy" rating. They now have a $16.00 price target on the stock. -8.2%
11/7 Form 8-K Amphastar Pharmaceutical For: Nov 07 -8.0%
5/31 Amphastar Pharmaceuticals to Present at the Jefferies 2019 Healthcare Conference -7.3%
5/12 Amphastar Pharmaceuticals, Inc. (AMPH) Q1 2019 Results - Earnings Call Transcript [Seeking Alpha] -6.8%
11/8 Form 10-Q Amphastar Pharmaceutical For: Sep 30 -5.8%
1/29 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) had its "hold" rating re-affirmed by analysts at Needham & Company LLC. -3.1%
6/10 Form 4 Amphastar Pharmaceutical For: Jun 07 Filed by: Lee Howard -3.1%
3/12 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at BidaskClub from a "sell" rating to a "hold" rating. -9.3%
2/28 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at BidaskClub from a "strong sell" rating to a "sell" rating. -9.3%
3/13 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) was upgraded by analysts at Zacks Investment Research from a "hold" rating to a "buy" rating. They now have a $16.00 price target on the stock. -8.2%
11/7 Form 8-K Amphastar Pharmaceutical For: Nov 07 -8.0%
5/31 Amphastar Pharmaceuticals to Present at the Jefferies 2019 Healthcare Conference -7.3%
5/12 Amphastar Pharmaceuticals, Inc. (AMPH) Q1 2019 Results - Earnings Call Transcript [Seeking Alpha] -6.8%
11/8 Form 10-Q Amphastar Pharmaceutical For: Sep 30 -5.8%
1/29 Amphastar Pharmaceuticals Inc (NASDAQ: AMPH) had its "hold" rating re-affirmed by analysts at Needham & Company LLC. -3.1%
6/10 Form 4 Amphastar Pharmaceutical For: Jun 07 Filed by: Lee Howard -3.1%
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