JOINT FILING AGREEMENT
Exhibit 99.1
In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, $0.00015 par value, of PDF Solutions, Inc., a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
Dated: November 20, 2018
| VIEX Opportunities Fund, LP – Series One | |||
| By: | VIEX GP, LLC General Partner | ||
| By: |
/s/ Xxxx Xxxxxx | ||
| Name: | Xxxx Xxxxxx | ||
| Title: | Managing Member | ||
| VIEX Opportunities Fund, LP – Series Two | |||
| By: | VIEX GP, LLC General Partner | ||
| By: |
/s/ Xxxx Xxxxxx | ||
| Name: | Xxxx Xxxxxx | ||
| Title: | Managing Member | ||
| VIEX GP, LLC | |||
| By: |
/s/ Xxxx Xxxxxx | ||
| Name: | Xxxx Xxxxxx | ||
| Title: | Managing Member | ||
| VIEX Capital Advisors, LLC | |||
| By: |
/s/ Xxxx Xxxxxx | ||
| Name: | Xxxx Xxxxxx | ||
| Title: | Managing Member | ||
|
/s/ Xxxx Xxxxxx | |
| Xxxx Xxxxxx |
