SC 13G

0001193125-12-285753.txt : 20120627 0001193125-12-285753.hdr.sgml : 20120627 20120627172023 ACCESSION NUMBER: 0001193125-12-285753 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 3 FILED AS OF DATE: 20120627 DATE AS OF CHANGE: 20120627 GROUP MEMBERS: AMERIPRISE FINANCIAL, INC. GROUP MEMBERS: COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PLX TECHNOLOGY INC CENTRAL INDEX KEY: 0000850579 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 943008334 STATE OF INCORPORATION: DE FISCAL YEAR END: 1213 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-56235 FILM NUMBER: 12930363 BUSINESS ADDRESS: STREET 1: 870 MAUDE AVENUE CITY: SUNNYVALE STATE: CA ZIP: 94085 BUSINESS PHONE: 4087749060 MAIL ADDRESS: STREET 1: 870 MAUDE AVENUE CITY: SUNNYVALE STATE: CA ZIP: 94085 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Seligman Spectrum Focus (Master) Fund CENTRAL INDEX KEY: 0001404098 IRS NUMBER: 980498128 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: PO BOX 309 UGLAND HOUSE STREET 2: 113 SOUTH CHURCH STREET CITY: GEORGE TOWN, GRAND CAYMAN STATE: E9 ZIP: BWI BUSINESS PHONE: 212-850-1864 MAIL ADDRESS: STREET 1: 100 PARK AVENUE CITY: NEW YORK STATE: NY ZIP: 10017 SC 13G 1 d374072dsc13g.htm SC 13G SC 13G

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities and Exchange Act of 1934

PLX Technology, Inc.

(Name of Issuer)

Common Stock, $0.001 par value per share

(Title of Class of Securities)

693417107

(CUSIP Number)

June 26, 2012

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

This Schedule is filed pursuant to Rule 13d-1(b) and Rule 13d-1(h).

The information required in the remainder of this cover page (except any items to which the form provides a cross-reference) shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act.


CUSIP NO. 055347207


1)	Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person Ameriprise Financial, Inc. IRS No. 13-3180631
2)	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x* * This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.
3)	SEC Use Only
4)	Citizenship or Place of Organization Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5)	Sole Voting Power -0-
		6)	Shared Voting Power 2,414,621
		7)	Sole Dispositive Power -0-
		8)	Shared Dispositive Power 2,921,524
9)	Aggregate Amount Beneficially Owned by Each Reporting Person 2,921,524
10)	Check if the Aggregate Amount in Row (9) Excludes Certain Shares Not Applicable
11)	Percent of Class Represented by Amount In Row (9) 6.53%
12)	Type of Reporting Person HC


CUSIP NO. 055347207


1)	Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person Columbia Management Investment Advisers, LLC IRS No. 41-1533211
2)	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x* * This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.
3)	SEC Use Only
4)	Citizenship or Place of Organization Minnesota
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5)	Sole Voting Power -0-
		6)	Shared Voting Power 2,414,621
		7)	Sole Dispositive Power -0-
		8)	Shared Dispositive Power 2,921,524
9)	Aggregate Amount Beneficially Owned by Each Reporting Person 2,921,524
10)	Check if the Aggregate Amount in Row (9) Excludes Certain Shares Not Applicable
11)	Percent of Class Represented by Amount In Row (9) 6.53%
12)	Type of Reporting Person IA


CUSIP NO. 055347207


1)	Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person Seligman Spectrum Focus (Master) Fund IRS No. 98-0498128
2)	Check the Appropriate Box if a Member of a Group (a) ¨ (b) x* * This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.
3)	SEC Use Only
4)	Citizenship or Place of Organization Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5)	Sole Voting Power -0-
		6)	Shared Voting Power 2,411,900
		7)	Sole Dispositive Power -0-
		8)	Shared Dispositive Power 2,411,900
9)	Aggregate Amount Beneficially Owned by Each Reporting Person 2,411,900
10)	Check if the Aggregate Amount in Row (9) Excludes Certain Shares Not Applicable
11)	Percent of Class Represented by Amount In Row (9) 5.39%
12)	Type of Reporting Person CO


1(a)	Name of Issuer:	PLX Technology, Inc.

1(b)	Address of Issuer’s Principal Executive Offices:	3230 Scott Blvd. Santa Clara, California 95054

2(a)	Name of Person Filing: (“Fund”)	Seligman Spectrum Focus (Master) Fund

2(b)	Address of Principal Business Office:	P.O. Box 309 Ugland House, South Church Street George Town, Grand Cayman KY1-1104,

2(c)	Citizenship:	Cayman Islands

2(d)	Title of Class of Securities:	Common Stock

2(e)	Cusip Number:	693417107

3	Information if statement is filed pursuant to Rules 13d-1(b) or 13d-2(b):

(a) Ameriprise Financial, Inc.

A parent holding company in accordance with Rule 13d-1(b)(1)(ii)(G). (Note: See Item 7)

(b) Columbia Management Investment Advisers, LLC

An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E)

An investor in accordance with Rule 13d-1(c).

4	Incorporated by reference to Items (5)-(9) and (11) of the cover page pertaining to each reporting person.

CMIA and AFI do not directly own any shares of Common Stock of the issuer. As the investment adviser of the Fund and various other unregistered and registered investment companies and other managed accounts, CMIA may be deemed to beneficially own the shares reported herein by the Fund. Accordingly, the shares reported herein by CMIA include those shares separately reported herein by the Fund.

As the parent holding company of CMIA, AFI may be deemed to beneficially own the shares reported herein by CMIA. Accordingly, the shares reported herein by AFI include those shares separately reported herein by CMIA.

Each of AFI and CMIA disclaims beneficial ownership of any shares reported on this Schedule.

5	Ownership of 5% or Less of a Class:

Not applicable.

6	Ownership of more than 5% on Behalf of Another Person:

To the knowledge of AFI, CMIA and Fund, no other persons besides AFI, CMIA and the Fund and those persons for whose shares of common stock CMIA and AFI report beneficial ownership have the right to receive or the power to direct the receipt of dividends from or the proceeds from the sale of the securities of the issuer reported herein. As of June 26, 2012, only the Fund owned more than 5% of the class of securities reported herein.

Any remaining shares reported herein by CMIA are held by various other funds or accounts managed by CMIA which each have the right to receive any dividends paid by the issuer and could terminate their respective investment advisory relationship with CMIA and then subsequently direct the use of proceeds from the sale of the common stock owned by such fund or account. To CMIA’s knowledge, none of these other funds or accounts own more than 5% of the outstanding shares of the issuer as of June 26, 2012.

7	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company:

AFI: See Exhibit I

8	Identification and Classification of Members of the Group:

Not Applicable

9	Notice of Dissolution of Group:

Not Applicable

10	Certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes 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: June 27, 2012


Ameriprise Financial, Inc.

By:		/s/ Wade M. Voigt
Name:		Wade M. Voigt
Title:		Vice President – Fund Administration – Financial Reporting


Columbia Management Investment
Advisers, LLC

By:		/s/ Amy Johnson
Name:		Amy Johnson
Title:		Chief Operating Officer


Seligman Spectrum Focus (Master) Fund

By:		/s/ Eric T. Brandt
Name:		Eric T. Brandt
Title:		Authorized Person

Contact Information

Wade M. Voigt

Vice President – Fund Administration – Financial Reporting

Telephone: (612) 671-5682

Exhibit Index


Exhibit I		Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company.

Exhibit II		Joint Filing Agreement

EX-99.1 2 d374072dex991.htm EX-99.1 EX-99.1

Exhibit I

Schedule 13G

Ameriprise Financial, Inc., a Delaware Corporation, is a parent holding company. The classification and identity of the relevant subsidiaries is as follows:

Investment Adviser – Columbia Management Investment Advisers, LLC is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.

EX-99.2 3 d374072dex992.htm EX-99.2 EX-99.2

Exhibit II

Schedule 13G

Joint Filing Agreement

The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated June 26, 2012 in connection with their beneficial ownership of PLX Technology, Inc. Each of Seligman Spectrum Focus (Master) Fund and Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments thereto.


Ameriprise Financial, Inc.

By:		/s/ Wade M. Voigt
		Wade M. Voigt
		Vice President – Fund Administration – Financial Reporting

Columbia Management Investment Advisers, LLC

By:		/s/ Amy Johnson
		Amy Johnson
		Chief Operating Officer

Seligman Spectrum Focus (Master) Fund

By:		/s/ Eric T. Brandt
		Eric T. Brandt
		Authorized Person