1.

Base Salary.  Your semi-monthly salary will be $19,791.66 ($475,000.00 annualized).  As an employee of ACADIA, you will be expected to abide by the Company’s rules and regulations and to devote all of your business time, skill, attention and best efforts to ACADIA business to fulfill the responsibilities assigned to you.  Your position is full time and is exempt under the Fair Labor Standards Act (“FLSA”) provision for overtime.

2.

Performance Bonus.  You will be eligible to receive a discretionary annual performance bonus (“Annual Bonus”) currently targeted at 50% of your annual base salary but which will be granted in the sole discretion of the Board based upon its evaluation of the Company’s and your achievement of such specific performance goals as established by the Board.  Your Annual Bonus for 2017, if any, will be pro-rated based on your time at the Company in 2017.  You must be an employee of the Company on the date upon which any annual bonus is paid to be eligible for such bonus.

3.

Stock Options.

(a)

Initial Grant.  In connection with the commencement of your employment, the Company will grant you an option (the “Option”) to purchase 400,000 shares of the Company’s Common Stock (the “Shares”) at an exercise price equal to the fair market value of the common stock on the date of grant, as determined in accordance with the terms of the Company’s 2010 Equity Incentive Plan (the “Plan”).

(b)

Vesting.  The Option will vest over four (4) years, with twenty-five percent (25%) of the Shares vesting on the first anniversary of the date of grant and 1/48th of the Shares vesting monthly thereafter on the monthly anniversary of the date of grant provided that you remain employed by the Company through each vesting installment date.

(c)

Other Terms.  The Option will be subject to the terms of the Plan, a related stock option agreement, and a notice of stock grant to be executed by you and the Company.  

(d)

Further Equity Grants.  The Company currently plans to issue equity awards twice yearly in March and September. Any future stock option or other equity grants are made at the sole discretion of the Board.  Your equity award for September 2017, if any, may be pro-rated based on your time at the Company in 2017.  

4.

Severance Benefit.  You will be entitled to participate in our Management Severance Benefit Plan (“Severance Plan”).  In the event of a qualifying termination of employment and subject to the terms of the Severance Plan, you would be entitled to receive the benefits set forth in the Severance Plan, which include severance equal to twelve months of your base salary in effect as of the date of termination plus your target bonus amount and payment for group healthcare benefits you were receiving at the time of your termination (subject to the terms of the Company’s benefit plans) for the same twelve month period.  This description is qualified in its entirety by the terms of the Severance Plan, which will govern any qualifying termination.

5.

Change in Control Severance Benefit.  You will be entitled to participate in our Change in Control Severance Benefit Plan (“CIC Severance Plan”).  In the event of a qualifying termination of employment, up to one month prior to or within 18 months following certain change in control events set forth in the CIC Severance Plan, you would be entitled to certain severance payments and benefits as outlined in the CIC Severance Plan.  The amount of payments and the type of benefits provided under the Severance Plan include cash severance payments based on base salary and bonus, accelerated vesting of equity awards, and payment for group healthcare benefits you were receiving at the time of your termination (subject to the terms of the Company’s benefit plans).  These benefits include a lump sum severance payment equal to 1.5 times the sum of your annual base salary and target bonus and would supersede the severance benefits described in paragraph 4, above. This description is qualified in its entirety by the terms of the CIC Severance Plan, which will govern any qualifying termination.

6.

Relocation Expenses.  As you will establish residence near the Company’s San Diego office, we will provide you, through our 3rd party vendor, assistance with temporary housing, the movement of your household goods, and other relocation services, in accordance with IRS relocation allowance guidelines.  Your complete relocation assistance program is outlined in the Summary of Relocation Assistance (attached) and will be subject to applicable income tax withholdings.  This program will expire 1 year following your employment start date.  In addition, you agree to reimburse the Company the total relocation costs paid by the Company, on a prorated basis, if you voluntarily terminate your employment within 2 years of your employment start date.

7.

Benefits.  You will be eligible to participate in the Company’s standard benefit plans, which include medical, dental, vision, life, accidental death and dismemberment and short and long-term disability insurance coverage.  You will also be able to utilize a Flexible Spending Arrangement that allows employees the opportunity to pay for certain dependent care and health care related costs with pretax dollars.  Note that these plans for new employees are effective as of the first day of the calendar month following your employment start date and enrollment.  Your eligibility and participation in these plans, is, of course, subject to the terms of the plans themselves.

8.

Vacation.  You will receive 20 vacation days each year, accrued monthly.

9.

401K. You will have the opportunity to participate in the Company’s 401(k) plan.  Currently, the plan provides for the Company to match, on a dollar for dollar basis, the employee contributions to the plan up to 5% of the employee’s annual compensation, subject to limitations imposed by the Internal Revenue Service.  The plan is currently managed by Fidelity Investments and provides for enrollment on the first day of each fiscal quarter.

10.

Employee Stock Purchase Plan.  You will have the opportunity to enroll in the Company’s Employee Stock Purchase Plan (ESPP), which provides for the purchase of shares of ACADIA common stock through payroll deductions. The ESPP currently provides for twice-annual purchases at a discount of at least 15% to the market price, subject to certain limitations.

11.

Inventions and Non-Disclosure.  You will be required to sign the Inventions and Non-Disclosure Agreement, attached to this letter, as a condition of your employment.  

12.

Authorization to Work.  Federal law requires that you provide the Company with the legally required proof of your identity and authorization to work in the United States.  We will furnish you with a list of acceptable documents.  This documentation must be provided within three (3) business days of the date your employment begins, or our employment relationship with you may be terminated.

13.

At-Will; Entire Agreement.  Your employment is at-will and for no specified period, and either you or the Company may terminate this employment relationship at anytime and for any reason.  This Agreement, including the enclosures, contains our complete, final, and exclusive agreement relating to the terms and conditions of your employment, and supersedes all prior or contemporaneous oral or written agreements, representations, or discussions.  This Agreement cannot be amended or modified except by a written instrument signed by you and the Chief Executive Officer of the Company.

Accepted and agreed:

/s/ Michael Yang

3/1/17

Michael Yang

Date

Attachments:

Relocation Summary

Inventions and Non-Disclosure Agreement