Shuo Zhang - Jul 1, 2021 Form 4 Insider Report for PDF SOLUTIONS INC (PDFS)

Role: Director
Signature: /s/Kimon Michaels, Attorney-In-Fact for Shuo Zhang
Stock symbol: PDFS
Transactions as of: Jul 1, 2021
Transactions value $: $0
Form type: 4
Date filed: 7/2/2021, 04:57 PM
Next filing: Mar 17, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PDFS	Common Stock	Award		+4.69K	+28.09%		21.4K	Jul 1, 2021	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares represent an award of restricted stock units granted under the Company's Director Compensation Program (Total Shares). 25% of the Total Shares vested on July 1, 2021, the Vesting Start Date, and 25% of the Total Shares shall vest on each anniversary of the Vesting Start Date thereafter until fully vested, subject to the recipient's continued service through each applicable vesting date.

Content

These shares represent an award of restricted stock units granted under the Company's Director Compensation Program (Total Shares). 25% of the Total Shares vested on July 1, 2021, the Vesting Start Date, and 25% of the Total Shares shall vest on each anniversary of the Vesting Start Date thereafter until fully vested, subject to the recipient's continued service through each applicable vesting date.