

Diverse employees at Amphastar Pharmaceuticals have rated Perks And Benefits, Leadership, and Compensation as the highest categories they have scored
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Anonymously Rate Your Experience & Make Work BetterAmphastar Pharmaceuticals employees are -13% more likely to recommend Amphastar Pharmaceuticals as a great place to work
| 37% | Promoters |
|---|---|
| 13% | Passives |
| 50% | Detractors |
Working at Amphastar Pharmaceuticals is rated below average by 11 employees, across various culture dimensions. Amphastar Pharmaceuticals employees rate Perks And Benefits highest among all categories, and think that Retention and Work Culture have the most room for improvement, putting Amphastar Pharmaceuticals’s culture in the Bottom 45% compared to similar sized companies on Comparably and in the Bottom 40% compared to other companies in Los Angeles. See below in detail how working at Amphastar Pharmaceuticals was rated by employees.
Overall Company Culture at Amphastar Pharmaceuticals is rated C
Last updated months ago
Amphastar Pharmaceuticals ranks in the Bottom 45% of other companies on Comparably with 1,001-5,000 Employees for Overall Company Culture Score
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Anonymously Rate Your Experience & Make Work BetterOut of 16 Amphastar Pharmaceuticals employee reviews, 83% were positive. The remaining 17% were constructive reviews with the goal of helping Amphastar Pharmaceuticals improve their work culture.
| Positive Reviews | 83% |
|---|---|
| Constructive Feedback | 17% |
What did you like most about the interview process?It was informative about the position
What makes you most happy at work?Being part of an amazing team
What is most positive about the culture and environment at your company?Total support within every department
What does the leadership team need to get better at?Rewarding personnel who do a good job.
What do your coworkers need to improve and how could you work together better?We should communicate more in English.
Amphastar Pharmaceuticals specialty pharmaceutical company that is engaged in the development, manufacture and marketing of generic.
Amphastar’s mission is to become a leader in research and development and the manufacture of generic and specialty pharmaceutical drugs and innovative delivery systems. Amphastar will invest in state-of-the-art technology to develop and produce the highest quality, innovative products at competitive prices to help patients live better. While we drive this mission forward, we will continue to meet or exceed cGMP requirements and provide our employees with meaningful work and advancement opportunities and our investors a fair rate of return.
| Headquarter | 11570 6th Street Rancho Cucamonga, CA United States of America |
|---|---|
| Website | www.amphastar.com/ |
| Founding Date | 1996 |
| Tel | 9094760633 |
| Company Status | Public |
| Stock | AMPH |
11 employees at Amphastar Pharmaceuticals have reviewed Amphastar Pharmaceuticals across various culture dimensions, providing their opinions on items ranging from executive ratings to the pace at work. The latest review was months ago.
Overall, the 11 Amphastar Pharmaceuticals employees give their leadership a grade of B-, or Top 40% of similar size companies on Comparably. This includes specific ratings of their executive team, CEO, and manager.
Employees at Amphastar Pharmaceuticals are generally satisfied with their total compensation at Amphastar Pharmaceuticals, which includes a combination of pay, stock and equity, and benefits.
Overall, employees at Amphastar Pharmaceuticals are generally satisfied with their team. 11 Participants grade the quality of their coworkers a C. The majority believe the meetings at Amphastar Pharmaceuticals are effective, and the majority look forward to interacting with their coworkers.
The majority of employees at Amphastar Pharmaceuticals believe the environment at Amphastar Pharmaceuticals is positive. Most Participants believe the pace of work at Amphastar Pharmaceuticals is extremely fast. About 50% of the employees at Amphastar Pharmaceuticals work 8 hours or less.
Overall, the employees at Amphastar Pharmaceuticals are generally happy, based on their aggregated ratings of future outlook, customer perception, and their excitement going to work.

The prevailing opinion from Comparably users in Los Angeles about their company is that it was very prepared on their first day. Los Angeles employees concluded that their overall onboarding experience was positive. 74% said their direct manager was helpful with their acclimation during the first 90 days. First impressions are important, and how prepared a company is on your first day leaves a lasting impression.
Employees’ understanding of Amphastar Pharmaceuticals' KPIs and OKRs is essential for its success. Out of 1 Amphastar Pharmaceuticals employees who’ve answered, “Are your company’s goals clear and are you invested in them?” 1 have said yes.
Jack’s approval rate is just above average, putting Jack in the Top 50% of all CEOs of similar-sized companies on Comparably, and in the Bottom 40% compared to the CEOs of all other companies in Los Angeles. Jack Zhang is well regarded by employees for the Perks And Benefits Amphastar Pharmaceuticals offers, and ranks among the Top 5% of CEOs by employees in that category. With Jack’s leadership, Amphastar Pharmaceuticals employee respondents are most happy about their Perks And Benefits and Compensation. Jack was rated slightly below average for Retention.
The Amphastar Pharmaceuticals Executive Team is rated a “C+” and led by CEO Jack Zhang, EVP of Quality Assurance & Regulatory Affairs Diane G. Gerst B.A., and CFO, Senior VP & Treasurer William J. Peters
Jack Zhang CEO / President
Jack Zhang serves as the CEO / President of Amphastar Pharmaceuticals.
Diane G. Gerst B.A. EVP of Quality Assurance & Regulatory Affairs
Ms. Diane G. Gerst, B.A., has been an Executive Vice President of Quality Assurance and Regulatory Affairs at Amphastar... read more
William J. Peters CFO, Senior VP & Treasurer
Mr. William J. Peters, also known as Bill, has been the Chief Financial Officer, Senior Vice President and Treasurer at... read more
Jason B. Shandell J.D., M.B.A. President, General Counsel & Director
Mr. Jason B. Shandell, J.D., M.B.A., has been the President of Amphastar Pharmaceuticals, Inc. since June 2013 and its... read more
Ziping Luo Ph.D. Chairman of The Board, Chief Scientist and Chief Operating Officer
Dr. Ziping Luo, also known as Mary, Ph.D., is Co-founder of Amphastar Pharmaceuticals, Inc. and has been its Chief... read more
Jacob Liawatidewi Sr. VP Corp. Admin. Center (Sales & Marketing)
Jacob Liawatidewi serves as the Sr. VP Corp. Admin. Center (Sales & Marketing) for Amphastar Pharmaceuticals, Inc..... read more
Stephen Campbell Senior Vice President, Regulatory Affairs
Stephen Campbell serves as the Senior Vice President, Regulatory Affairs of Amphastar Pharmaceuticals, Inc.. Stephen... read more
How much do people at Amphastar Pharmaceuticals get paid? See the latest salaries by department and job title. The average estimated annual salary, including base and bonus, at Amphastar Pharmaceuticals is $106,731, or $51 per hour, while the estimated median salary is $108,728, or $52 per hour.
At Amphastar Pharmaceuticals, the highest paid job is a Group Engineering Manager at $201,014 annually and the lowest is a Technical Support at $46,725 annually. Average Amphastar Pharmaceuticals salaries by department include: Legal at $129,704, Admin at $69,022, HR at $106,768, and Operations at $99,278. Half of Amphastar Pharmaceuticals salaries are above $108,728.
5 employees at Amphastar Pharmaceuticals rank their Compensation in the Top 40% of similar sized companies in the US (based on 17 ratings) while 5 employees at Amphastar Pharmaceuticals rank their Perks And Benefits in the Top 5% of similar sized companies in the US (based on 7 ratings).
Last updated months ago.
| Summary | Salary Range | Percentile |
|---|---|---|
1st Percentile $66k | $66k | 1st Percentile |
17th Percentile $87k | $87k | 17th Percentile |
33rd Percentile $106k | $106k | 33rd Percentile |
50th Percentile $166k | $166k | 50th Percentile |
67th Percentile $226k | $226k | 67th Percentile |
83rd Percentile $237k | $237k | 83rd Percentile |
100th Percentile $286k | $286k | 100th Percentile |
* Estimated salaries Estimated salaries are based on data provided anonymously by employees and/or estimated by other statistical methods.
Diverse employees at Amphastar Pharmaceuticals score the company 67/100 across various culture categories, placing Amphastar Pharmaceuticals in the Top 50% of companies on Comparably with 1,001-5,000 Employees for Comparably's diversity score. The Diversity score provides insights into how diverse employees feel and rate their work experience at Amphastar Pharmaceuticals across various culture dimensions.
Amphastar Pharmaceuticals' PTO and Vacation policy typically gives 0-10 days off a year. Amphastar Pharmaceuticals' benefits and PTO Package averages to represent a $2500+ cash value per month.

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In 2019, Amphastar Pharmaceuticals applied for 5 H1B visas. Of the work permits applied for, 100% were approved.
H1B Applications Outcome
This data was calculated using publicly sourced data from OFLC Performance Data

What is Amphastar Pharmaceuticals address?
Amphastar Pharmaceuticals location is at 11570 6th Street
Who is the CEO of Amphastar Pharmaceuticals?
Amphastar Pharmaceuticals CEO is Jack Zhang, their score by employees is 67
What is Amphastar Pharmaceuticals eNPS?
The eNPS for Amphastar Pharmaceuticals is -13
What is Amphastar Pharmaceuticals revenue?
Amphastar Pharmaceuticals revenue is $240M
What is the salary for Principal Engineer in Amphastar Pharmaceuticals?
Principal Engineer average salary in the US is 175k