opportunity is up to 35% of his annual base salary; as noted above, Mr. Dierks’ 2021 target bonus opportunity was 40% of his annual base salary, which increased to 50% on June 1, 2021 in connection with his promotion to Executive Vice President and Chief Commercial Officer. The payment of any annual bonus, to the extent any such bonus becomes payable, will be contingent upon Mr. Dierks’ continued employment through the applicable payment date.
In connection with entering into his offer letter, Mr. Dierks was awarded an option to purchase shares of our common stock. The option vests as to 20% of the shares underlying the option on each of the first five anniversaries of the grant date, subject to Mr. Dierks’ continued employment with the Company through the applicable vesting date. Upon a “change in control” (as defined in the Equity Incentive Plan), Mr. Dierks’ option will accelerate and vest in full subject to his continued employment through the change in control.
Andrew Serafin Offer Letter
On September 8, 2017, we entered into an offer letter with Andrew Serafin. Mr. Serafin’s employment under the agreement is at-will, and will continue until terminated at any time by either party.
Pursuant to his offer letter, Mr. Serafin is entitled to receive an annual base salary of $300,000 per year; the actual base salary earned by Mr. Serafin for services during the last completed fiscal year is set forth above in the Summary Compensation Table. In addition, Mr. Serafin is eligible to participate in the health and welfare benefit plans and programs maintained by us for the benefit of our employees.
Mr. Serafin is eligible to earn annual cash bonuses under our bonus program, based on the achievement of individual performance goals relating to our growth and overall performance. Pursuant to his offer letter, Mr. Serafin’s target bonus opportunity is 40% of his annual base salary; as noted above, Mr. Serafin’s 2021 target bonus opportunity was 50% of his annual base salary. The payment of any annual bonus, to the extent any such bonus becomes payable, will be contingent upon Mr. Serafin’s continued employment through the applicable payment date.
In connection with his offer letter, Mr. Serafin was awarded an option to purchase shares of our common stock. The option vests as to 20% of the shares underlying the option on each of the first five anniversaries of the grant date, subject to Mr. Serafin’s continued employment with the Company through the applicable vesting date. Upon a “change in control” (as defined the Equity Incentive Plan), Mr. Serafin’s option will accelerate and vest in full subject to his continued employment through the change in control.
Susan Drexler Offer Letter and Separation Agreement
On October 23, 2019, Harmony Biosciences, LLC entered into an offer letter with Susan Drexler. As discussed further below, we entered into a separation and general release agreement with Ms. Drexler, dated March 4, 2021 (the “Drexler Separation Agreement”), pursuant to which her employment with the Company terminated, effective as of March 31, 2021 (the “Separation Date”).
Pursuant to her offer letter, Ms. Drexler was entitled to receive an annual base salary of $325,000 per year; the actual base salary earned by Ms. Drexler for services during the last completed fiscal year is set forth above in the Summary Compensation Table. In addition, Ms. Drexler was eligible to participate in the in the health and welfare benefit plans and programs maintained by us for the benefit of our employees.
Prior to the Separation Date, Ms. Drexler was eligible to earn annual cash bonuses under our bonus program, based on the achievement of individual performance goals relating to the Company’s growth and overall performance. Pursuant to her offer letter, Ms. Drexler’s target bonus opportunity was 40% of her annual base salary. The payment of any annual bonus, to the extent any such bonus becomes payable, will be contingent upon Ms. Drexler’s continued employment through the applicable payment date.
In connection with her offer letter, Ms. Drexler was awarded an option to purchase shares of our common stock, subject to applicable service-vesting conditions. As of the Separation Date, 7,303 shares underlying the option were vested and unexercised. Pursuant to the Drexler Separation Agreement, these vested shares will remain outstanding and exercisable until for up to 180 days after the Separation Date. The remaining shares underlying Ms. Drexler’s option were cancelled and forfeited. Additional information on Ms. Drexler’s outstanding option awards can be found under the section below titled “Outstanding Equity Awards at Fiscal Year-End.”
The severance benefits and payments paid or provided to Ms. Drexler upon her termination of employment are summarized below under the section titled, “—Potential Payments Upon Termination or Change in Control.”