SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response: 0.5

1. Name and Address of Reporting Person* BRONSON JOSEPH R (Last) (First) (Middle) 333 W. SAN CARLOS ST. SUITE 1000 (Street) SAN JOSE CA 95110 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/27/2014	3. Issuer Name and Ticker or Trading Symbol PDF SOLUTIONS INC [ PDFS ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Gregory Walker, Attorney-in-Fact for Joseph R. Bronson	05/29/2014
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

POWER OF ATTORNEY



 The undersigned hereby constitutes and appoints John K. Kibarian,
Kimon W. Michaels and Gregory
Walker, and each of them, his or her, true and lawful attorney-in-fact to:



(1) prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to
the U.S. Securities and Exchange Commission (the 'SEC') a Form ID, including
amendments
thereto, and any other documents necessary or appropriate to obtain codes
and passwords
enabling the undersigned to make electronic filings with the SEC of
reports required by
Section 16(a) of the Securities Exchange Act of 1934 or any rule or
 regulation of the SEC;



(2) execute for and on behalf of the undersigned, in the undersigned's
 capacity as an officer
and/or director, and/or person who holds more than 10% of the stock
of PDF Solutions, Inc.
(the 'Company'), Forms 3, 4 and 5 in accordance with Section 16(a)
of the Securities
Exchange Act of 1934, as amended (the 'Exchange Act')
and the rules thereunder;



(3) do and perform any and all acts for and on behalf of the
undersigned which may be necessary
or desirable to complete and execute any such Form 3, 4 or 5,
complete and execute any
amendment(s) thereto, and timely file any such form with the
United States Securities and
Exchange Commission and any stock exchange or similar authority; and



(4) take any other action of any type whatsoever in connection with
the foregoing which, in the
opinion of such attorney-in-fact, may be of benefit to, in the best
interest of, or legally
required by, the undersigned, it being understood that the
documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to
 this Power of Attorney shall be in
such form and shall contain such terms and conditions as
such attorney-in-fact may approve
in such attorney-in-fact's discretion.



 The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform
any and every act and thing whatsoever requisite, necessary
 or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents
and purposes as the undersigned might or could do if
personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done
pursuant to this power of attorney. The undersigned
acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned,
are not assuming, nor is the Company assuming, any
of the undersigned's responsibilities to comply with
Section 16 of the Exchange Act.



 This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required
to file Forms 3, 4, and 5 with respect to the undersigned's
holdings of and transactions in securities issued by
the Company, unless earlier revoked or modified by the
undersigned in a signed writing, but shall terminate
automatically as to each individual attorney-in-fact
when such person is no longer an employee of the
Company. This Power of Attorney may be filed with the
SEC as a confirming statement of the authority
granted herein.





 The undersigned has caused this Power of Attorney to be
 executed as of this 27th day of May, 2014.





/s/Joseph R. Bronson

Joseph R. Bronson