Prepared by R.R. Donnelley Financial -- EX-10.22




 Exhibit 10.22 

ONCOMED PHARMACEUTICALS, INC. 

NON-EMPLOYEE DIRECTOR COMPENSATION POLICY 

Approved by the Board of Directors on August 28, 2013, 

as amended October 14, 2013 and February 28, 2014 

Non-employee members of the board of directors (the “Board”) of OncoMed Pharmaceuticals, Inc. (the
“Company”) who are appointed to the Board following the date upon which the Company is subject to the reporting requirements of Section 13 or 15(d)(2) of the Securities Exchange Act of 1934, as amended (the
“Public Trading Date”), shall be eligible to receive cash and equity compensation as set forth in this Non-Employee Director Compensation Policy (this “Policy”) beginning upon their appointment to the
Board. Non-employee members of the Board who were serving on the Board as of the Public Trading Date shall be eligible to receive cash and equity compensation as set forth in this Policy beginning January 1, 2014, if such members continue to
serve on the Board as of such date. The cash and equity compensation described in this Policy shall be paid or be made, as applicable, automatically and without further action of the Board, to each member of the Board who is not an employee of the
Company or any parent or subsidiary of the Company (each, a “Non-Employee Director”) who may be eligible to receive such cash or equity compensation, unless such Non-Employee Director declines the receipt of such cash or
equity compensation by written notice to the Company. This Policy shall remain in effect until it is revised or rescinded by further action of the Board. The terms and conditions of this Policy shall supersede any prior cash or equity compensation
arrangements between the Company and its Non-Employee Directors. 
 1. Cash Compensation. 

(a) Annual Retainers. Each Non-Employee Director shall be eligible to receive an annual retainer of $35,000 for service on the Board.
In addition, a Non-Employee Director shall receive the following additional annual retainers, as applicable: 
 (i) Chairperson of the
Audit Committee. A Non-Employee Director serving as Chairperson of the Audit Committee shall receive an additional annual retainer of $15,000 for such service. 

(ii) Member of the Audit Committee. A Non-Employee Director serving as a member of the Audit Committee (other than the Chairperson)
shall receive an additional annual retainer of $10,000 for such service. 
 (iii) Chairperson of the Compensation Committee. A
Non-Employee Director serving as Chairperson of the Compensation Committee shall receive an additional annual retainer of $10,000 for such service. 

(iv) Member of the Compensation Committee. A Non-Employee Director serving as a member of the Compensation Committee (other than the
Chairperson) shall receive an additional annual retainer of $7,000 for such service. 
 (v) Chairperson of the Nominating and Corporate
Governance Committee. A Non-Employee Director serving as Chairperson of the Nominating and Corporate Governance Committee shall receive an additional annual retainer of $8,000 for such service. 








 (vi) Member of the Nominating and Corporate Governance Committee. A Non-Employee Director
serving as a member of the Nominating and Corporate Governance Committee (other than the Chairperson) shall receive an additional annual retainer of $5,000 for such service. 

(b) Payment of Retainers. The annual retainers described in Section 1(a) shall be earned on a quarterly basis based on a calendar
quarter and shall be paid by the Company in arrears. In the event a Non-Employee Director does not serve as a Non-Employee Director, or in the applicable positions described in Section 1(a), for an entire calendar quarter, the retainer paid to
such Non-Employee Director shall be prorated for the portion of such calendar quarter actually served as a Non-Employee Director, or in such positions, as applicable. 

2. Equity Compensation. Non-Employee Directors shall be granted the equity awards described below. The awards described below shall be
granted under and shall be subject to the terms and provisions of the Company’s 2013 Equity Incentive Award Plan (the “Equity Plan”) and shall be granted subject to the execution and delivery of award agreements,
including attached exhibits, in substantially the same forms previously approved by the Board, setting forth the vesting schedule applicable to such awards and such other terms as may be required by the Equity Plan. 

(a) Initial Awards. A person who is initially elected or appointed to the Board following the Public Trading Date, and who is a
Non-Employee Director at the time of such initial election or appointment, shall be eligible to receive a stock option to purchase that number of shares of common stock equal to 0.1% of the Company’s outstanding capital stock on the date of
such initial election or appointment. The awards described in this Section 2(a) shall be referred to as “Initial Awards.” No Non-Employee Director shall be granted more than one Initial Award. 

(b) Subsequent Awards. A person who is a Non-Employee Director immediately following each annual meeting of the Company’s
stockholders after the Public Trading Date and who will continue to serve as a Non-Employee Director immediately following such annual meeting shall be automatically granted an option to purchase 15,000 shares of the Company’s common stock on
the date of each such annual meeting. The awards described in this Section 2(b) shall be referred to as “Subsequent Awards.” For the avoidance of doubt, a Non-Employee Director elected for the first time to the Board at
an annual meeting of the Company’s stockholders shall only receive an Initial Award in connection with such election, and shall not receive any Subsequent Award on the date of such meeting as well. 

(c) Termination of Employment of Employee Directors. Members of the Board who are employees of the Company or any parent or subsidiary
of the Company who subsequently terminate their employment with the Company and any parent or subsidiary of the Company and remain on the Board will not receive an Initial Award pursuant to Section 2(a) above, but to the extent that they are
otherwise eligible, will be eligible to receive, after termination from employment with the Company and any parent or subsidiary of the Company, Subsequent Awards as described in Section 2(b) above. 

(d) Terms of Awards Granted to Non-Employee Directors. 

(i) Purchase Price. The per share exercise price of each option granted to a Non-Employee Director shall equal 100% of the Fair Market
Value (as defined in the Equity Plan) of a share of common stock on the date the option is granted. 
 (ii) Vesting. Each Initial
Award shall vest and become exercisable in three equal annual installments over the three year period following the date of grant, subject to the Non-Employee Director continuing in service on the Board through each such vesting date. Each
Subsequent 








 
Award shall vest and/or become exercisable in full upon the earlier of the first anniversary of the date of grant or the date of the next annual meeting of stockholders, subject to the
Non-Employee Director continuing in service on the Board through such vesting date. 
 (iii) Term. The term of each stock option
granted to a Non-Employee Director shall be ten years from the date the option is granted. 
 (iv) Upon a Change in Control (as defined in
the Equity Plan) of the Company, all outstanding equity awards granted under the Equity Plan or any other equity incentive plan maintained by the Company that are held by a Non-Employee Director shall become fully vested and/or exercisable,
irrespective of any other provisions of the Non-Employee Director’s award agreement.