AMPH

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NEW: Price Reaction to Earnings Reports

View detailed tables showing price action before and after earnings announcements, ranging from intraday to one week out. Track how the market has reacted to past earnings to identify patterns and predict future behavior. Click here to open.

Dollar change -0.27
Percentage change -0.73	%

Peers: PFE JNJ BMY LLY ABBV MRK REGN AZN GILD VRTX

| Held by: IJR VTI CALF IWM VXF AVUV IWO SPSM IJT VTWO

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Index	RUT	P/E	12.26	EPS (ttm)	3.01	Insider Own	25.56%	Shs Outstand	48.37M	Perf Week	-3.68%
Market Cap	1.77B	Forward P/E	8.68	EPS next Y	4.24	Insider Trans	-0.70%	Shs Float	35.79M	Perf Month	-19.66%
Income	157.72M	PEG	1.29	EPS next Q	0.96	Inst Own	74.87%	Short Float	12.20%	Perf Quarter	-20.73%
Sales	723.55M	P/S	2.45	EPS this Y	17.16%	Inst Trans	0.75%	Short Ratio	9.90	Perf Half Y	-4.41%
Book/sh	15.04	P/B	2.45	EPS next Y	9.12%	ROA	10.21%	Short Interest	4.37M	Perf Year	-40.83%
Cash/sh	5.26	P/C	7.01	EPS next 5Y	9.54%	ROE	23.85%	52W Range	36.48 - 65.92	Perf YTD	-0.73%
Dividend Est.	-	P/FCF	10.42	EPS past 5Y	-	ROI	11.66%	52W High	-44.09%	Beta	0.82
Dividend TTM	-	Quick Ratio	2.61	Sales past 5Y	17.24%	Gross Margin	51.35%	52W Low	1.04%	ATR (14)	1.35
Dividend Ex-Date	-	Current Ratio	3.43	EPS Y/Y TTM	16.54%	Oper. Margin	29.61%	RSI (14)	22.20	Volatility	2.76% 3.32%
Employees	1761	Debt/Eq	0.87	Sales Y/Y TTM	20.33%	Profit Margin	21.80%	Recom	1.67	Target Price	58.20
Option/Short	Yes / Yes	LT Debt/Eq	0.86	EPS Q/Q	-14.59%	Payout	0.00%	Rel Volume	0.46	Prev Close	37.13
Sales Surprise	-1.78%	EPS Surprise	-2.83%	Sales Q/Q	5.90%	Earnings	Nov 06 AMC	Avg Volume	441.08K	Price	36.86
SMA20	-9.36%	SMA50	-17.77%	SMA200	-15.59%	Trades		Volume	111,377	Change	-0.73%

Date	Action	Analyst	Rating Change	Price Target Change
Nov-22-24	Initiated	Wells Fargo	Equal Weight	$55
Mar-05-24	Initiated	JP Morgan	Overweight	$60
Nov-17-23	Initiated	BofA Securities	Neutral	$63
Jul-25-23	Resumed	Jefferies	Buy	$70
Oct-21-22	Resumed	Jefferies	Buy	$36
Jul-29-22	Initiated	CapitalOne	Overweight	$44
Jan-07-22	Upgrade	Piper Sandler	Neutral → Overweight	$21 → $28
Jan-08-21	Downgrade	Wells Fargo	Overweight → Equal Weight	$21
Oct-05-20	Upgrade	Northland Capital	Market Perform → Outperform	$24
May-01-20	Initiated	Northland Capital	Outperform	$23
Mar-13-19	Downgrade	Piper Jaffray	Overweight → Neutral	$24 → $23
Mar-13-19	Downgrade	Needham	Buy → Hold
Aug-10-18	Reiterated	Needham	Buy	$24 → $22
Mar-13-18	Reiterated	Needham	Buy	$23 → $24
Dec-01-17	Reiterated	Needham	Buy	$20 → $23
Nov-09-17	Downgrade	Raymond James	Outperform → Mkt Perform
Sep-27-17	Reiterated	Needham	Buy	$18 → $20
Mar-14-17	Downgrade	Raymond James	Strong Buy → Outperform
Aug-09-16	Reiterated	Needham	Buy	$20 → $22
May-10-16	Reiterated	Needham	Buy	$21 → $20

Show Previous Ratings

Dec-04-24 02:54PM	Implied Volatility Surging for Amphastar Pharmceuticals (AMPH) Stock Options (Zacks)
Nov-30-24 04:27PM	Why Amphastar Pharmaceuticals (AMPH) Is One of the Most Profitable Pharmaceutical Stocks Right Now? (Insider Monkey)
Nov-26-24 04:05PM	Amphastar Pharmaceuticals to Present at the 36th Annual Piper Sandler Healthcare Conference (ACCESSWIRE)
Nov-23-24 06:20AM	Amphastar initiated with an Equal Weight at Wells Fargo (TipRanks)
Nov-13-24 04:05PM	Amphastar Pharmaceuticals to Present at the Jefferies London Healthcare Conference (ACCESSWIRE)
01:18PM	Loading…
Nov-07-24 01:18PM	Q3 2024 Amphastar Pharmaceuticals Inc Earnings Call (Thomson Reuters StreetEvents) -13.69%
02:24AM	Amphastar Pharmaceuticals Inc (AMPH) Q3 2024 Earnings Call Highlights: Resilient Revenue Growth ... (GuruFocus.com)
Nov-06-24 06:00PM	Here's What Key Metrics Tell Us About Amphastar (AMPH) Q3 Earnings (Zacks)
05:35PM	Amphastar Pharmaceuticals (AMPH) Lags Q3 Earnings and Revenue Estimates (Zacks)
04:33PM	Amphastar: Q3 Earnings Snapshot (Associated Press Finance)
04:05PM	Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended September 30, 2024 (ACCESSWIRE)
Nov-05-24 07:44AM	Amphastar Pharmaceuticals Inc (AMPH) Q3 2024 Earnings Report Preview: What to Expect (GuruFocus.com)
Oct-30-24 10:01AM	Amphastar Pharmaceuticals (AMPH) Expected to Beat Earnings Estimates: Should You Buy? (Zacks)
Oct-29-24 06:00AM	Amphastar Pharmaceuticals to Release Third Quarter Earnings and Hold Conference Call on November 6, 2024 (ACCESSWIRE)
Oct-25-24 09:40AM	Are Investors Undervaluing Amphastar Pharmaceuticals (AMPH) Right Now? (Zacks)
12:10PM	Loading…
Oct-18-24 12:10PM	Will Amphastar (AMPH) Beat Estimates Again in Its Next Earnings Report? (Zacks)
Oct-11-24 12:32PM	Is Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) The Top Stock With Improving Technical Ratings According To Piper Sandler? (Insider Monkey)
Oct-03-24 08:42AM	Implied Volatility Surging for Amphastar Pharmaceuticals (AMPH) Stock Options (Zacks)
Sep-07-24 01:43AM	Insider Sale: Director Floyd Petersen Sells Shares of Amphastar Pharmaceuticals Inc (AMPH) (GuruFocus.com)
Aug-28-24 04:10PM	Amphastar Pharmaceuticals to Present at the 2024 Wells Fargo Healthcare Conference (ACCESSWIRE)
Aug-07-24 07:30PM	Compared to Estimates, Amphastar (AMPH) Q2 Earnings: A Look at Key Metrics (Zacks) +13.29%
05:30PM	Amphastar Pharmaceuticals (AMPH) Tops Q2 Earnings and Revenue Estimates (Zacks)
04:29PM	Amphastar: Q2 Earnings Snapshot (Associated Press Finance)
04:05PM	Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended June 30, 2024 (ACCESSWIRE)
Jul-31-24 04:05PM	Amphastar Pharmaceuticals to Release Second Quarter Earnings and Hold Conference Call on August 7, 2024 (ACCESSWIRE)
Jul-15-24 12:10PM	Why Amphastar (AMPH) is Poised to Beat Earnings Estimates Again (Zacks)
Jun-28-24 07:00PM	Insider Sale: CFO, EVP & Treasurer William Peters Sells Shares of Amphastar Pharmaceuticals ... (GuruFocus.com)
Jun-24-24 12:56PM	7 Biotech Stocks to Buy on the Dip: June 2024 (InvestorPlace)
Jun-14-24 04:30PM	BetterInvesting Magazine Update on Amphastar Pharmaceuticals Inc. and Medtronic PLC (PR Newswire)
Jun-12-24 02:36AM	Insider Sale: Director Floyd Petersen Sells Shares of Amphastar Pharmaceuticals Inc (AMPH) (GuruFocus.com)
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Jun-04-24 06:00AM	Amphastar Announces Additional $50 Million Increase to its Share Buyback Program (ACCESSWIRE)
Jun-03-24 06:00AM	Amphastar Pharmaceuticals to Present at the Jefferies Global Healthcare Conference (ACCESSWIRE)
May-22-24 06:00AM	Amphastar Receives FDA Approval for Albuterol Sulfate Inhalation Aerosol (ACCESSWIRE)
May-16-24 06:15AM	Patent Peril: 3 Stocks at Risk From the FTC's Drug Crusade (InvestorPlace)
May-15-24 08:36AM	Implied Volatility Surging for Amphastar (AMPH) Stock Options (Zacks)
May-10-24 01:23PM	Amphastar Pharmaceuticals Reports Strong First Quarter Earnings, Surpassing Analyst Revenue ... (GuruFocus.com)
May-09-24 04:05PM	Amphastar Pharmaceuticals to Present at the Bank of America Securities Health Care Conference (ACCESSWIRE)
01:46PM	Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Q1 2024 Earnings Call Transcript (Insider Monkey)
07:41AM	Q1 2024 Amphastar Pharmaceuticals Inc Earnings Call (Thomson Reuters StreetEvents)
03:53AM	Amphastar Pharmaceuticals Inc (AMPH) Q1 2024 Earnings Call Transcript Highlights: Robust Growth ... (GuruFocus.com)
May-08-24 10:57PM	AMPH Stock Earnings: Amphastar Pharma Beats EPS, Misses Revenue for Q1 2024 (InvestorPlace)
05:15PM	Amphastar Pharmaceuticals (AMPH) Tops Q1 Earnings and Revenue Estimates (Zacks)
04:13PM	Amphastar: Q1 Earnings Snapshot (Associated Press Finance)
04:05PM	Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2024 (ACCESSWIRE)
May-01-24 10:01AM	Amphastar Pharmaceuticals (AMPH) Reports Next Week: Wall Street Expects Earnings Growth (Zacks)
Apr-30-24 04:05PM	Amphastar Pharmaceuticals to Release First Quarter Earnings and Hold Conference Call on May 8, 2024 (ACCESSWIRE)
12:10PM	Why Amphastar (AMPH) Could Beat Earnings Estimates Again (Zacks)
Apr-04-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Stock Moves -1%: What You Should Know (Zacks)
Apr-01-24 06:00AM	Amphastar Pharmaceuticals to Present at the 23rd Annual Needham Virtual Healthcare Conference (ACCESSWIRE)
Mar-27-24 09:30AM	Is Amphastar (AMPH) a Buy as Wall Street Analysts Look Optimistic? (Zacks)
Mar-26-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Registers a Bigger Fall Than the Market: Important Facts to Note (Zacks)
Mar-20-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Stock Sinks As Market Gains: What You Should Know (Zacks)
Mar-11-24 09:30AM	Brokers Suggest Investing in Amphastar (AMPH): Read This Before Placing a Bet (Zacks)
Mar-08-24 11:31PM	Amphastar Pharmaceuticals Inc CFO, EVP & Treasurer William Peters Sells 18,136 Shares (GuruFocus.com)
Mar-06-24 11:29PM	Amphastar Pharmaceuticals Inc Director Michael Zasloff Sells 12,500 Shares (GuruFocus.com)
04:05PM	Amphastar Pharmaceuticals to Present at the Barclays 26th Annual Global Healthcare Conference (ACCESSWIRE)
Mar-02-24 08:24AM	Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Q4 2023 Earnings Call Transcript (Insider Monkey)
Feb-29-24 08:09AM	Q4 2023 Amphastar Pharmaceuticals Inc Earnings Call (Thomson Reuters StreetEvents) -14.93%
Feb-28-24 05:25PM	Amphastar Pharmaceuticals (AMPH) Surpasses Q4 Earnings and Revenue Estimates (Zacks)
05:12PM	Amphastar Pharmaceuticals Inc Reports Robust Revenue Growth and Strong Full-Year Performance (GuruFocus.com)
04:25PM	Amphastar: Q4 Earnings Snapshot (Associated Press Finance)
04:05PM	Amphastar Pharmaceuticals Reports Financial Results for the Three Months and Full-Year Ended December 31, 2023 (ACCESSWIRE)
Feb-23-24 02:09PM	The Cream Of The Crop: 5 Biotechs That Outrank Most Stocks (Investor's Business Daily)
Feb-22-24 05:45PM	Amphastar Pharmaceuticals (AMPH) Increases Yet Falls Behind Market: What Investors Need to Know (Zacks)
09:30AM	Wall Street Bulls Look Optimistic About Amphastar (AMPH): Should You Buy? (Zacks)
Feb-21-24 06:54AM	Amphastar (AMPH) to Report Q4 Earnings: What's in the Cards? (Zacks)
Feb-20-24 04:01PM	Amphastar Pharmaceuticals to Release Fourth Quarter Earnings and Hold Conference Call on February 28, 2024 (ACCESSWIRE)
Feb-16-24 08:00AM	It May Be Time To Revisit Amphastar Once It Settles After A Plunge (Investor's Business Daily)
Feb-15-24 05:45PM	Amphastar Pharmaceuticals (AMPH) Outpaces Stock Market Gains: What You Should Know (Zacks)
Feb-09-24 05:45PM	Amphastar Pharmaceuticals (AMPH) Laps the Stock Market: Here's Why (Zacks)
Feb-05-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Dips More Than Broader Market: What You Should Know (Zacks)
12:41PM	3 Once-in-a-Lifetime Biotech Stocks With Unprecedented Surge Potential (InvestorPlace)
Jan-30-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Falls More Steeply Than Broader Market: What Investors Need to Know (Zacks)
Jan-23-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Stock Sinks As Market Gains: What You Should Know (Zacks)
Jan-17-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Gains As Market Dips: What You Should Know (Zacks)
Jan-11-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Registers a Bigger Fall Than the Market: Important Facts to Note (Zacks)
Jan-05-24 05:50PM	Amphastar Pharmaceuticals (AMPH) Stock Drops Despite Market Gains: Important Facts to Note (Zacks) -5.24%
Jan-02-24 06:00AM	Amphastar Pharmaceuticals to Present at the 42nd Annual J.P. Morgan Healthcare Conference (ACCESSWIRE)
Jan-01-24 12:00PM	Amphastar Pharmaceuticals (AMPH) Is Up 1.53% in One Week: What You Should Know (Zacks)
Dec-27-23 09:30AM	Wall Street Analysts Think Amphastar (AMPH) Is a Good Investment: Is It? (Zacks)
Dec-25-23 08:23PM	3 Stocks at the Forefront of Medical Innovation (InvestorPlace)
12:45PM	3 Reasons Why Amphastar (AMPH) Is a Great Growth Stock (Zacks)
Dec-21-23 08:00AM	Will Eli Lilly's Emergency Diabetes Drug Give Amphastar Wings? (Investor's Business Daily)
Dec-08-23 12:45PM	3 Reasons Why Growth Investors Shouldn't Overlook Amphastar (AMPH) (Zacks)
Dec-05-23 12:00PM	Are You Looking for a Top Momentum Pick? Why Amphastar Pharmaceuticals (AMPH) is a Great Choice (Zacks)
Dec-04-23 03:02PM	Amphastar, Stock Of The Day, Breaks Out As It Sees Upside From Eli Lilly Deal (Investor's Business Daily)
Nov-30-23 06:13PM	This Biotech Stock Nears A Buy Point After 200% Profit Growth (Investor's Business Daily)
Nov-29-23 09:30AM	Amphastar (AMPH) Is Considered a Good Investment by Brokers: Is That True? (Zacks)
Nov-22-23 12:45PM	3 Reasons Why Growth Investors Shouldn't Overlook Amphastar (AMPH) (Zacks)
Nov-21-23 01:03AM	Insider Sell Alert: Director Richard Prins Sells 4,000 Shares of Amphastar Pharmaceuticals Inc ... (GuruFocus.com)
Nov-20-23 04:20PM	Amphastar Pharmaceuticals to Present at the Piper Sandler 35th Annual Healthcare Conference (ACCESSWIRE)
Nov-17-23 11:04AM	Insider Sell: CFO William Peters Sells Shares of Amphastar Pharmaceuticals Inc (GuruFocus.com)
Nov-16-23 05:10AM	Insider Sell: Director Richard Prins Sells 5,000 Shares of Amphastar Pharmaceuticals Inc (AMPH) (GuruFocus.com)
Nov-13-23 09:30AM	Wall Street Analysts See Amphastar (AMPH) as a Buy: Should You Invest? (Zacks)
Nov-10-23 03:43PM	Amphastar Pharmaceuticals Stock Earns Composite Rating Upgrade (Investor's Business Daily)
01:15PM	Plenty Of IBD 50 Companies' Earnings Impress, And Some Remain Actionable (Investor's Business Daily)
Nov-09-23 04:05PM	Amphastar Pharmaceuticals to Present at the Jefferies London Healthcare Conference (ACCESSWIRE) +15.39%
01:27PM	Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Q3 2023 Earnings Call Transcript (Insider Monkey)
08:38AM	Q3 2023 Amphastar Pharmaceuticals Inc Earnings Call (Thomson Reuters StreetEvents)
05:42AM	Amphastar: Q3 Earnings Snapshot (Associated Press Finance)

Amphastar Pharmaceuticals, Inc. engages in developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products, and insulin active pharmaceutical ingredient. It operates through Finished Pharmaceutical Products and Active Pharmaceutical Ingredients Products segments. The Finished Pharmaceutical Products segment manufactures, markets, and distributes Primatene Mist, enoxaparin, naloxone, phytonadione, lidocaine, and other critical and non-critical care drugs. The Active Pharmaceutical Ingredients Products segment offers RHI API and porcine insulin API for external customers and internal product development. The company was founded by Zi-Ping Luo and Yong Feng Zhang on February 29, 1996 and is headquartered in Rancho Cucamonga, CA.

Insider Trading	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Dec 13 '24	Option Exercise	11.33	8,000	90,640	126,469	Dec 16 05:22 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Dec 12 '24	Option Exercise	11.33	7,000	79,310	125,469	Dec 16 05:22 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Dec 13 '24	Sale	45.23	8,000	361,840	118,469	Dec 16 05:22 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Dec 12 '24	Sale	44.42	7,000	310,975	118,469	Dec 16 05:22 PM
PRINS RICHARD K	Director	Dec 09 '24	Option Exercise	19.52	10,000	195,200	40,471	Dec 11 08:28 PM
PRINS RICHARD K	Director	Dec 09 '24	Sale	43.77	10,000	437,702	30,471	Dec 11 08:28 PM
Richard Prins	Executive	Dec 09 '24	Proposed Sale	44.00	10,000	440,000		Dec 09 11:37 AM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Nov 12 '24	Option Exercise	14.95	6,893	103,050	125,281	Nov 13 08:26 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Nov 12 '24	Sale	48.88	6,893	336,930	118,388	Nov 13 08:26 PM
PRINS RICHARD K	Director	Nov 12 '24	Option Exercise	16.69	2,500	41,725	36,471	Nov 13 06:55 PM
PRINS RICHARD K	Director	Nov 12 '24	Sale	48.80	5,000	243,986	31,471	Nov 13 06:55 PM
Rong Zhou	Executive Vice President	Nov 12 '24	Proposed Sale	48.10	31,680	1,523,808		Nov 12 01:29 PM
Richard Prins	Director	Nov 12 '24	Proposed Sale	48.10	5,000	240,500		Nov 12 01:29 PM
Liawatidewi Yakob	EVP CORP ADMIN CENTER	Nov 06 '24	Option Exercise	13.03	5,214	67,938	80,152	Nov 08 07:02 PM
Liawatidewi Yakob	EVP CORP ADMIN CENTER	Nov 06 '24	Sale	52.05	5,214	271,389	74,938	Nov 08 07:02 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Nov 06 '24	Option Exercise	13.03	7,426	96,761	101,529	Nov 08 05:24 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Nov 06 '24	Sale	52.05	7,426	386,523	94,103	Nov 08 05:24 PM
Liawatidewi Yakob	Director	Nov 06 '24	Proposed Sale	52.05	5,214	271,389		Nov 06 04:54 PM
PETERS WILLIAM J	Officer	Nov 06 '24	Proposed Sale	52.05	7,426	386,523		Nov 06 04:54 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Sep 13 '24	Option Exercise	14.95	3,000	44,850	121,388	Sep 17 04:11 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Sep 13 '24	Sale	48.26	3,000	144,784	118,388	Sep 17 04:11 PM
Zhang Jack Y.	CEO & CHIEF SCIENTIFIC OFFICER	Sep 13 '24	Option Exercise	14.69	100,000	1,469,000	2,633,554	Sep 16 07:09 PM
Petersen Floyd F.	Director	Sep 05 '24	Sale	46.47	3,000	139,417	75,409	Sep 06 07:48 PM
Floyd Petersen	Director	Sep 05 '24	Proposed Sale	46.00	5,000	230,000		Sep 05 04:48 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Aug 26 '24	Option Exercise	14.95	4,000	59,800	122,388	Aug 27 09:33 PM
Zhou Rong	SENIOR EVP, PRODUCTION CENTER	Aug 26 '24	Sale	48.35	4,000	193,400	118,388	Aug 27 09:33 PM
Rong Zhou	Director	Aug 26 '24	Proposed Sale	47.00	13,893	652,971		Aug 26 05:26 PM
PRINS RICHARD K	Director	Aug 12 '24	Option Exercise	19.83	17,101	339,170	51,072	Aug 13 05:58 PM
PRINS RICHARD K	Director	Aug 12 '24	Sale	43.07	17,101	736,550	33,971	Aug 13 05:58 PM
Richard Prins	Director	Aug 12 '24	Proposed Sale	44.00	17,101	752,444		Aug 12 05:25 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Jul 31 '24	Option Exercise	20.23	10,282	208,005	104,385	Aug 02 04:32 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Jul 31 '24	Sale	44.23	10,282	454,773	94,103	Aug 02 04:32 PM
PETERS WILLIAM J	Officer	Jul 31 '24	Proposed Sale	44.23	10,282	454,772		Jul 31 05:24 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Jun 27 '24	Sale	40.93	3,596	147,169	94,103	Jun 28 04:26 PM
Zhang Jack Y.	CEO & CHIEF SCIENTIFIC OFFICER	Jun 10 '24	Option Exercise	14.69	100,000	1,469,000	2,533,554	Jun 11 06:35 PM
Petersen Floyd F.	Director	Jun 10 '24	Sale	41.40	3,000	124,200	78,409	Jun 11 06:32 PM
Petersen Floyd F.	Director	Jun 03 '24	Sale	42.65	500	21,326	78,333	Jun 05 06:54 PM
Petersen Floyd F.	Director	May 01 '24	Sale	41.67	500	20,837	78,833	May 02 04:56 PM
Petersen Floyd F.	Director	Apr 01 '24	Sale	43.43	500	21,714	79,333	Apr 02 09:31 PM
Zhang Jack Y.	CEO & Chief Scientific Officer	Mar 15 '24	Option Exercise	12.46	722,046	8,996,693	2,858,043	Mar 19 06:55 PM
Zhang Jack Y.	CEO & Chief Scientific Officer	Mar 15 '24	Option Exercise	12.46	310,930	3,874,188	1,439,466	Mar 19 06:55 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Mar 06 '24	Option Exercise	11.33	8,826	99,999	129,626	Mar 08 04:52 PM
PETERS WILLIAM J	CFO, EVP & TREASURER	Mar 06 '24	Sale	46.48	18,136	842,883	111,490	Mar 08 04:52 PM
ZASLOFF MICHAEL A	Director	Mar 05 '24	Sale	47.18	12,500	589,724	21,326	Mar 06 05:57 PM
Petersen Floyd F.	Director	Mar 01 '24	Sale	45.69	500	22,847	79,833	Mar 04 08:35 PM
Petersen Floyd F.	Director	Feb 01 '24	Sale	53.10	500	26,548	80,333	Feb 02 07:37 PM
Luo Mary Z.	COO,Chief Scientist & Chairman	Jan 10 '24	Sale	54.59	131,386	7,171,768	1,104,416	Jan 11 04:37 PM
Luo Mary Z.	COO,Chief Scientist & Chairman	Jan 08 '24	Sale	58.93	133,644	7,875,476	1,321,958	Jan 10 06:27 PM
Luo Mary Z.	COO,Chief Scientist & Chairman	Jan 09 '24	Sale	57.14	86,156	4,923,232	1,235,802	Jan 10 06:27 PM

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Amphastar Pharmaceuticals Inc

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