Document:

EX-10.9

 Exhibit 10.9 

 
 

 
 Five Prime Therapeutics, Inc. 

1650 Owens Street, Suite 200 
 San Francisco, CA 94158 
 September 4, 2009 

Aron M. Knickerbocker 
 [Home Address] 

Dear Aron, 
 We are very pleased to
send you this revised offer of employment with Five Prime Therapeutics, Inc. as Vice President, Business Development. The revisions relate to the insertion of language from our 2002 Equity Incentive Plan regarding stock option vesting (see pg 2) and
a statement regarding indemnification (see pg 3). 
 We would like for your full-time employment with the Company to begin at your
earliest convenience, but no later than Thursday, September 24, 2009. 
 You will be paid at a bi-weekly rate of $9,616.00
which is approximately equivalent to $250,000 per year. Once you begin full-time employment, you will be eligible to receive FivePrime’s package of benefits that will be available to all regular, full-time employees. These benefits currently
include medical, vision, dental, disability, 401(k) investment plan, Section 125 (flex spending), Section 132 (mass transit) and paid time-off programs. 
 In addition, the Company will provide you with a $50,000 sign on bonus within 10 business days of your date of hire. 
 Starting from your date of hire, you will be eligible to participate in the Company’s Bonus Program based on an assessment of meeting individual goals as well as the Company’s attainment of
corporate goals. Your target bonus amount is 30% of your base salary or $75,000 and will be prorated for 2009. Due to the current economic environment, for the 2009 performance year all executive bonuses at FivePrime, including yours, will be paid
50% in cash and 50% in stock options. 
 Subject to Board approval, the Company will issue you an option (the
“Hire Option”) to purchase 350,000 shares of the Company’s common stock under the Company’s 2002 Equity Incentive Plan (the “Plan”) at an exercise price equal to the fair market value of the stock as of the date of
grant as determined by the Board. The Hire Option will be subject to a four-year vesting period conditioned on your continued service to the Company (as defined in the Plan), with twenty-five percent (25%) of the shares subject to the Hire
Option vesting on the one year anniversary of your vesting commencement date, and one-forty-eighth (1/48th) of the shares subject to the Hire Option vesting for each month of your continued service thereafter. The Hire Option will be governed in full by the terms and conditions of the Plan and your
individual stock option agreement. 
 Subject to Board approval, the Company will issue you an additional one-time option (the
“Bonus Option”) to purchase 150,000 shares of the Company’s common stock under the Plan at an exercise price equal to the fair market value of the stock on the date of grant as determined by the Board. The Bonus Option will only vest
upon the occurrence of the vesting conditions described in this Agreement, provided that such triggering condition(s) occurs during your 

 
continued employment. The Bonus Option will be governed in full by the terms and conditions of the Plan and your stock option agreement. 

For purposes of the Bonus Option, each of the following shall qualify as a “Triggering Event” which will result in vesting in full
of all shares subject to the Bonus Option: (1) the closing of a strategic alliance or partnership between the Company and another entity which is approved by the Board and that results in an up-front payment of at least $100 million to the
Company (which “payment” can include an equity component consisting of no more than fifty percent (50%) of the total value of the up-front payment, and which must be at a share price that is more than or equal to one hundred ten
percent (110%) of the greater of the current or the then current preferred share price) (an “Alliance Milestone”); and (2) an acquisition of the Company (by merger, acquisition of voting control or acquisition of assets) for
aggregate purchase price of at least $500 million (an “Acquisition Milestone”). 
 In the event the Company enters into a
definitive agreement for a transaction that would constitute an Acquisition Milestone and such transaction involves up-front payments of at least $200 million and contingency payment upon achievement of certain development, regulatory or financial
milestones, then immediately prior to closing of the Acquisition Milestone, the Bonus Option shall vest in an amount equal to the number of shares underlying the Bonus Option multiplied by a fraction equal to the value of any up-front payment
(whether in cash or stock) divided by $500 million. The remaining portion of the Bonus Option representing the unvested shares under the Bonus Option shall terminate in full immediately prior to the closing of such Acquisition Milestone. 

In the event the Company enters into a definitive agreement for a strategic alliance or partnership that would constitute an Alliance
Milestone but for the fact that the up-front payment to the Company is less that $100 million but greater than $50 million (a “Missed Alliance Milestone”), then (a) immediately prior to the closing of the Missed Alliance Milestone,
the Bonus Option shall vest in an amount equal to the number of shares underlying the Bonus Option multiplied by a fraction equal to the value of any up-front payment divided by $100 million, and (b) the remaining portion of the Bonus Option
representing the unvested shares shall be tolled and shall vest if and only if the Company closes, by the 12 month anniversary of the Missed Alliance Milestone, an Acquisition Milestone (a “Post Alliance Milestone”), in which case, the
unvested shares shall vest in full immediately prior to the closing such Post Alliance Milestone. If the Company does not achieve a Post Alliance Milestone by the 12 month anniversary of the Missed Alliance Milestone, the portion of the Bonus Option
covering the unvested shares will terminate in full on such 12 month anniversary date. 
 Further to both the Hire Option and Bonus
Option outlined above, we are including below the language from our 2002 Equity Incentive Plan document on the treatment of these options in the event of a Corporate Transaction: 

11. Adjustments upon Changes in Stock. 

(a)        Corporate Transaction.
In the event of a Corporate Transaction, any surviving corporation or acquiring corporation may assume any or all Stock Awards outstanding under the Plan or may substitute similar stock awards for Stock Awards outstanding under
the Plan (it being understood that similar stock awards include, but are not limited to, awards to acquire the same consideration paid to the stockholders or the Company, as the case may be, pursuant to the Corporate Transaction). In the event that
any surviving corporation or acquiring corporation does not assume any or all such outstanding Stock Awards or substitute similar stock awards for such outstanding Stock Awards, then with respect to Stock Awards that have been neither assumed nor
substituted and that are held by Participants whose Continuous Service has not terminated prior to the effective time of the Corporate Transaction, the vesting of such Stock Awards (and, if
applicable, the time at which such Stock Awards may be exercised) shall (contingent upon the effectiveness of the Corporate Transaction) be accelerated in full to a date prior to
the effective time of such Corporate Transaction as the Board shall determine 

 
(or, if the Board shall not determine such a date, to the date that is five (5) days prior to the effective time of the Corporate Transaction), and the Stock Awards shall terminate if
not exercised (if applicable) at or prior to such effective time. With respect to any other Stock Awards outstanding under the Plan that have been neither assumed nor substituted, the vesting of such Stock Awards (and, if applicable, the time at
which such Stock Award may be exercised) shall not be accelerated unless otherwise provided in a written agreement between the Company or any Affiliate and the holder of such Stock Award, and such Stock Awards shall terminate if not exercised (if
applicable) prior to the effective time of the Corporate Transaction. 
 During your tenure with the Company, you will
be expected to abide by Company policies and procedures. As a condition of your employment, you will be required: 1) to provide the Company with proof of your right to work in the United States; and 2) to sign and comply with the Company’s
Employee Confidentiality and Inventions Assignment Agreement, which among other things prohibits unauthorized use or disclosure of FivePrime’s proprietary information. 
 In your work for the Company, you will be expected to refrain from use or disclosure of any confidential information, including trade secrets, of any former employer or other person to whom you have an
obligation of confidentiality. You will be expected to use only that information which is generally known and used by persons with training and experience comparable to your own, which is common knowledge in the industry or otherwise legally in the
public domain, or which is otherwise provided or developed by the Company. Further, you agree that you will not bring onto Company premises any unpublished documents or property of any former employer or other person to whom you have an obligation
of confidentiality. 
 In your role as Vice President Business Development you will receive the company’s standard form of
indemnification which is extended to all directors and officers of FivePrime. 
 You may terminate your employment with FivePrime
at any time and for any reason whatsoever simply by notifying the Company. Likewise, FivePrime may terminate your employment at any time for any reason whatsoever, with or without cause or advance notice. This at-will employment relationship cannot
be changed except in writing signed by a Company officer. 
 This letter, together with the Employee Confidentiality and Inventions
Assignment Agreement, will constitute the complete and exclusive statement of your employment agreement with FivePrime, and their terms supersede any other oral or written agreements or promises made to you. 

Please fax this page to Five Prime Therapeutics, Inc. by the end of the business day on Thursday, September 10, 2009. The fax should be
addressed to Lauretta Cesario using the fax number 415-365-5601. 
 Again, we are very pleased to make this offer of employment to
you. We are confident that our relationship can be mutually rewarding and that your contributions will be important to the Company and its mission. We look forward to having the opportunity to continue to build a vibrant and successful company with
you. 
 Very truly yours, 
 /s/ Julia P.
Gregory 
 Julia P. Gregory 
 President and
CEO 

	
	Accepted:
	
	/s/ Aron M. Knickerbocker
	Aron M. Knickerbocker
	
	September 8, 2009
	DateEX-10.10

 Exhibit 10.10 

 
 

 
 Five Prime Therapeutics, Inc. 
 Two Corporate Drive 
 South San Francisco, CA 94080 

Main: (415) 365-5600   Fax: (415) 520-9842 
 December 2, 2010 
 Francis Sarena 
 [Home Address] 
 Dear Francis, 
 We are very pleased to extend to you an offer of employment with Five Prime Therapeutics, Inc. as Vice President, General Counsel and Corporate Secretary, reporting directly to me, as President and Chief
Executive Officer. 
 We would like for your full-time employment with the Company to begin at your earliest convenience, but no
later than Wednesday, December 15, 2010. 
 You will be paid at a semi-monthly rate of $12,500.00 which is equivalent to
$300,000 per year. Once you begin full-time employment, you will be eligible to receive FivePrime’s package of benefits available to all regular, full-time employees. These benefits currently include medical, vision, dental, disability, 401(k)
investment plan, Section 125 (flex spending), Section 132 (mass transit) and paid time-off programs. 
 Effective
January 1, 2011, you will be eligible to participate in the Company’s Bonus Program based on an assessment of meeting individual goals (50%) as well as the Company’s attainment of corporate goals (50%). Your target bonus amount
is 30% of your base salary. 
 Subject to approval by the Company’s Board of Directors, you will be granted an option to
purchase 300,000 shares of the Company’s common stock. The exercise price per share will be the market price set by the Board of Directors at date of grant. Twenty-five percent (25%) of the shares will vest on the first
(1st) anniversary of your date of hire, with the balance vesting in equal monthly installments over the subsequent thirty-six (36) months. Other grant terms will be as provided in the 2010 Equity Incentive Plan, your grant notice, and the
stock option agreement that you will sign to document the grant. 
 During your tenure with the Company, you will be expected to
abide by Company policies and procedures. As a condition of this offer of employment, you will be required: 1) to provide the Company with proof of your right to work in the United States; and 2) to sign and comply with the Company’s Employee
Confidentiality and Inventions Assignment Agreement, which among other things prohibits unauthorized use or disclosure of FivePrime’s proprietary information. 
 In your work for the Company, you will be expected to refrain from use or disclosure of any confidential information, including trade secrets, of any former employer or other person to whom you have an
obligation of confidentiality. You will be expected to use only that information which is generally known and used by persons with training and experience comparable to your own, which is common knowledge in the industry or otherwise legally in the
public domain, or which is otherwise provided or developed by the Company. Further, you agree that you will not bring onto Company premises any unpublished documents or property of any former employer or other person to whom you have an obligation
of confidentiality. 

 Assuming you accept this offer of employment, you may terminate your employment with FivePrime
at any time and for any reason whatsoever simply by notifying the Company. Likewise, FivePrime may terminate your employment at any time for any reason whatsoever, with or without cause or advance notice. This at-will employment relationship cannot
be changed except in writing and signed by a Company officer. 
 This letter, together with the Employee Confidentiality and
Inventions Assignment Agreement, will constitute the complete and exclusive statement of your employment agreement with FivePrime, and these terms supersede any other oral or written agreements or promises made to you. 

To accept this offer of employment, please sign, date and return this letter by the end of the business day on Tuesday, December 7,
2010. Please either fax the document to (415) 520-9842, attention Lauretta Cesario, or email a scanned copy to eFax-HR@fiveprime.com. 
 Again, Francis, I am very pleased to make this offer to you. I believe you bring a
great deal to FivePrime at this stage of our development and that your contributions will be important in continuing our progress. We all look forward to having you join our team as we continue to build a vibrant and successful company. 

Very truly yours, 
  

	
	 /s/ Julia P.
Gregory                                      

	Julia P. Gregory
	President and Chief Executive Officer

 Accepted: 
  

	
	 /s/ Francis
Sarena                                        
  
	Francis Sarena

  

	
	 December 2, 2010
                                        

	Date

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