SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
SCHEDULE 13G/A
(Rule 13d-102)
Under the Securities Exchange Act of 1934
(Original Filing)(1)
PDF SOLUTIONS INC
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(Name of Issuer)
COMMON STOCK
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(Title of Class of Securities)
693282105
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(CUSIP Number)
December 31, 2010
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[_] Rule 13d-1(c)
[_] Rule 13d-1(d)
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(1) The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
CUSIP No. 693282105 13G/A Page 1 of 5 Pages
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1. NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) BURNHAM ASSET
MANAGEMENT CORPORATION
23-1702840
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2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [_]
(b) [_]
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3. SEC USE ONLY
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4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
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NUMBER OF 5. SOLE VOTING POWER
SHARES N/A
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY N/A
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING N/A
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 2,886,971
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,886,971
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10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[-]
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11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 10.48%
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12. TYPE OF REPORTING PERSON* IA
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*SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 693282105 13G/A Page 2 of 5 Pages
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1. NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) BURNHAM
SECURITIES INC.
13-3435435
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2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) [_]
(b) [_]
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3. SEC USE ONLY
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4. CITIZENSHIP OR PLACE OF ORGANIZATION New York
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NUMBER OF 5. SOLE VOTING POWER
SHARES N/A
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY N/A
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING N/A
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 305,500
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 305,500
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10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
[-]
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11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 1.11%
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12. TYPE OF REPORTING PERSON* BD
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*SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No.693282105 13G/A Page 3 of 5 Pages
Item 1(a). Name of Issuer:
PDF SOLUTIONS INC
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Item 1(b). Address of Issuer's Principal Executive Offices:
333 WEST SAN CARLOS STREET, SUITE 700
SAN JOSE, CA 95110
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Item 2(a). Name of Persons Filing:
BURNHAM ASSET MANAGEMENT CORPORATION
BURNHAM SECURITIES INC.
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Item 2(b). Address of Principal Business Office, or if None, Residence:
BURNHAM ASSET MANAGEMENT CORPORATION
1325 Avenue of the Americas
New York, NY 10019
BURNHAM SECURITIES INC.
1325 Avenue of the Americas
New York, NY 10019
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Item 2(c). Citizenship:
BURNHAM ASSET MANAGEMENT CORPORATION - DELAWARE
BURNHAM SECURITIES INC. - NEW YORK
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Item 2(d). Title of Class of Securities:
Common Stock
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Item 2(e). CUSIP Number:
693282105
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Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b)
or (c), Check Whether the Person Filing is a:
(a) [X] Broker or dealer registered under Section 15 of the Exchange
Act.
(b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act.
(c) [_] Insurance company as defined in Section 3(a)(19) of the
Exchange Act.
(d) [_] Investment company registered under Section 8 of the
Investment Company Act.
(e) [X] An investment adviser in accordance with Rule
13d-1(b)(1)(ii)(E);
(f) [_] An employee benefit plan or endowment fund in accordance with
Rule 13d-1(b)(1)(ii)(F);
(g) [_] A parent holding company or control person in accordance with
Rule 13d-1(b)(1)(ii)(G);
(h) [_] A savings association as defined in Section 3(b) of the
Federal Deposit Insurance Act;
(i) [_] A church plan that is excluded from the definition of an
investment company under Section 3(c)(14) of the Investment
Company Act;
(j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).
CUSIP No. 693282105 13G/A Page 4 of 5 Pages
Item 4. Ownership.
Burnham Asset Management Corporation serves as the investment manager for a
number of managed accounts with respect to which it has dispositive authority
over the shares reported in this Schedule 13G. The reporting persons disclaim
beneficial ownership of the common stock of the Issuer reported herein.
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned: 2,886,971 shares
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(b) Percent of class: 10.48%
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(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote________N/A____________,
(ii) Shared power to vote or to direct the vote______N/A____________,
(iii) Sole power to dispose or to direct the disposition of N/A ,
(iv) Shared power to dispose or to direct the disposition of 2,886,971
Burnham Securities Inc. is a registered broker-dealer with a number of
discretionary accounts with respect to which it has dispositive authority over
the shares reported in this Schedule 13G. The reporting persons disclaim
beneficial ownership of the common stock of the Issuer reported herein.
Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned: 305,500 shares
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(b) Percent of class: 1.11%
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(c) Number of shares as to which such person has:
(i) Sole power to vote or to direct the vote________N/A____________,
(ii) Shared power to vote or to direct the vote______N/A____________,
(iii) Sole power to dispose or to direct the disposition of N/A ,
(iv) Shared power to dispose or to direct the disposition of 305,500
CUSIP No.693282105 13G/A Page 5 of 5 Pages
Item 5. Ownership of Five Percent or Less of a Class.
If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
five percent of the class of securities check the following [ ].
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Item 6. Ownership of More Than Five Percent on Behalf of Another Person.
See Item 4.
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Item 7. Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on by the Parent Holding Company or Control
Person.
N/A
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Item 8. Identification and Classification of Members of the Group.
See Item 4.
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Item 9. Notice of Dissolution of Group.
N/A
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Item 10. Certifications.
"By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are held in
the ordinary course of business and were not acquired and not held for
the purpose of or with the effect of changing or influencing the
control of the issuer of the securities and were not acquired and are
not held in connection with or as a participant in any transaction
having such purpose or effect."
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
DATED: December 31, 2010
Burnham Asset Management Corporation
/s/ Robert Grosshart
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Robert Grosshart
Portfolio Administrator
DATED: December 31, 2010
Burnham Securities Inc.
/s/ Thomas Calabria
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Thomas Calabria
Vice President
Note. Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
for whom copies are to be sent.
Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).