UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
[Rule 13d-101]
Under the Securities Exchange Act of 1934
(Amendment No. 4)*
Advanced Analogic Technologies Incorporated
(Name of Issuer)
Common Stock, $0.001 par value per share
(Title of Class of Securities)
(CUSIP Number)
Seligman Spectrum Focus (Master) Fund
P.O. Box 309
Ugland House, South Church Street
George Town, Grand Cayman KY1-1104, Cayman Islands
Telephone: (212) 850-1864
with copies to:
Michael J. Kennedy, Esq.
Steve L. Camahort, Esq.
Shearman & Sterling LLP
525 Market Street
San Francisco, CA 94105
Telephone: (415) 616-1100
(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)
(Date of Event which Requires Filing of this Statement)
If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.o
Note:Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.
* 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 disclosures provided in a prior cover page.
The information required on 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 (“Act”) 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).
This Amendment No. 4 to Schedule 13D is being filed jointly by the following (each a “Reporting Person” and collectively, the “Reporting Persons”): (1) Ameriprise Financial, Inc., a Delaware corporation (“AFI”), (2) Columbia Management Investment Advisers, LLC, a Minnesota limited liability company (formerly known as RiverSource Investments, LLC, “Columbia Management”), and (3) Seligman Spectrum Focus (Master) Fund, an exempted company incorporated in the Cayman Islands (“Focus Fund”), to supplement and amend the Schedule 13D filed on behalf of the Reporting Persons. Each item below amends and supplements the information disclosed under the corresponding item of Schedule 13D. Capitalized terms defined in the Schedule 13D are used herein with their defined meaning. The information set forth in response to each separate Item below shall be deemed to be a response to all Items where such information is relevant.
Item 3. Source Amount of Funds or Other Consideration
The shares of Common Stock purchased by Focus Fund were purchased with working capital in open market purchases. The aggregate purchase cost of the 1,729,069 shares of Common Stock beneficially owned by Focus Fund is approximately $10,460,867, excluding brokerage commissions.
Item 5. Interest in Securities of the Issuer
(a-b) The following disclosure assumes there are 42,829,856 shares of Common Stock outstanding, which the Issuer represented to be the number of shares of Common Stock outstanding as of April 27, 2011 in the Issuer’s Quarterly Report on Form 10-Q, as filed with the Securities and Exchange Commission on May 3, 2011.
As of June 21, 2011, Focus Fund beneficially owned 1,729,069 shares of Common Stock, which constitutes approximately 4.04% of the shares of Common Stock outstanding.
As of June 21, 2011, Columbia Management and AFI do not directly own any shares of Common Stock of the Issuer. As the investment adviser of Focus Fund and various other unregistered and registered investment companies and other managed accounts, Columbia Management may be deemed to beneficially own 1,955,592 shares of Common Stock held by Focus Fund and eight other clients of Columbia Management, which constitutes approximately 4.57% of the shares of Common Stock outstanding. To the knowledge of the Reporting Persons, as of June 21, 2011, no clients of Columbia Management beneficially owned more than 5% of the shares of Common Stock outstanding on an individual basis.
As the sole owner and parent company of Columbia Management, AFI may be deemed to beneficially own 1,955,592 shares of Common Stock, which constitutes approximately 4.57% of the shares of Common Stock outstanding.
Except as set forth in this Item 5(a), none of the Reporting Persons beneficially owns any shares of Common Stock.
(c) Schedule A annexed hereto lists all transactions in the shares of Common Stock during the past 60 days by the Reporting Persons.
(d) To the knowledge of the Reporting Persons, no other persons besides the stockholders and those persons for whose shares of Common Stock the stockholders 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; provided, however, that eight Columbia Management clients (each not a Reporting Person hereunder) owning in the aggregate 226,523 shares of Common Stock of the Issuer have the right to receive any dividends paid by the Issuer and could terminate their respective investment advisory relationship with Columbia Management and then subsequently direct the use of proceeds from the sale of the Common Stock owned by such client.
(e) Not applicable.
Except as set forth above, to the knowledge of the Reporting Persons, none of the other persons listed in Item 2 above has beneficial ownership of any shares of Common Stock.
