UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13D/A
                                 Amendment No. 4
                                 (Rule 13d-101)

      INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1
                   (a) AND AMENDMENTS THERETO FILED PURSUANT
                                TO RULE 13d-2(a)

                           Southwall Technologies Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $.001 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    844909101
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                Robert Van Grover
                               Seward & Kissel LLP
                             One Battery Park Plaza
                            New York, New York 10004
                                  212-574-1200
--------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                December 31, 2005
--------------------------------------------------------------------------------
             (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 Rule 13d-1(e), 13(d)-1(f) or 13(d)-1(g), check the
following box |_|.

     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 the section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham & Company, LLC
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            2,009,807
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        0

                  9     SOLE DISPOSITIVE POWER

                        2,009,807

                  10    SHARED DISPOSITIVE POWER

                        0

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     2,009,807

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     6.1%

14   TYPE OF REPORTING PERSON*

     BD



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Investment Management L.L.C.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            0
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        1,428,000

                  9     SOLE DISPOSITIVE POWER

                        0

                 10     SHARED DISPOSITIVE POWER

                        1,428,000

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,428,000(1)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     4.4%

14   TYPE OF REPORTING PERSON*

     IA

----------
(1)  Due to an internal restructuring, Needham Investment Management, L.L.C.
     serves as investment manager to various series of The Needham Funds, Inc.
     and certain private investment funds that hold 1,428,000 shares of common
     stock of the Issuer ("Shares"). Needham Investment Management L.L.C. may be
     deemed to beneficially own by virtue of its position as investment adviser
     to these series and funds.



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     George A. Needham
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     PF

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            35,000
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        13,889,112

                  9     SOLE DISPOSITIVE POWER

                        35,000

                  10    SHARED DISPOSITIVE POWER

                        13,889,112

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     13,889,112

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |X|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     42.4%

14   TYPE OF REPORTING PERSON*

     IN



CUSIP No. 844909101
----------------------------------

1    NAME OF REPORTING PERSONS
     Needham Capital Partners II, L.P.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            0
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        3,258,068

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        3,258,068

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     3,258,068

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     10.0%

14   TYPE OF REPORTING PERSON*

     PN


CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Partners III, L.P.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

  NUMBER OF       7     SOLE VOTING POWER
    SHARES
 BENEFICIALLY           0
   OWNED BY
     EACH
  REPORTING
 PERSON WITH

                  8     SHARED VOTING POWER

                        5,703,716

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        5,703,716

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     5,703,716

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     17.4%

14   TYPE OF REPORTING PERSON*

     PN



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Partners IIIA L.P.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

  NUMBER OF       7     SOLE VOTING POWER
     SHARES
  BENEFICIALLY          0
    OWNED BY
      EACH
   REPORTING
  PERSON WITH
                  8     SHARED VOTING POWER

                        589,054

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        589,054

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     589,054

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     1.8%

14   TYPE OF REPORTING PERSON*

     PN


CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Partners II (Bermuda), L.P.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

  NUMBER OF       7     SOLE VOTING POWER
    SHARES
 BENEFICIALLY           0
   OWNED BY
     EACH
  REPORTING
 PERSON WITH

                  8     SHARED VOTING POWER

                        456,700

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        456,700

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     456,700

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     1.4%

14   TYPE OF REPORTING PERSON*

     PN


CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Partners III (Bermuda), L.P.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            0
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                  8     SHARED VOTING POWER

                        1,136,767

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        1,136,767

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,136,767

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     3.5%

14   TYPE OF REPORTING PERSON*

     PN



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Management L.L.C.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*          (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            0
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        9,550,838

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        9,550,838

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     9,550,838

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     29.2%

14   TYPE OF REPORTING PERSON*

     PN



CUSIP No. 844909101

1    NAME OF REPORTING PERSONS
     Needham Capital Management (Bermuda) L.L.C.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*           (a)  |_|
                                                                 (b)  |X|

3    SEC USE ONLY

4    SOURCE OF FUNDS

     WC

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e) |_|

6    CITIZENSHIP OR PLACE OF ORGANIZATION

     U.S.

 NUMBER OF        7     SOLE VOTING POWER
   SHARES
BENEFICIALLY            0
  OWNED BY
    EACH
 REPORTING
PERSON WITH

                  8     SHARED VOTING POWER

                        1,593,467

                  9     SOLE DISPOSITIVE POWER

                        0

                  10    SHARED DISPOSITIVE POWER

                        1,593,467

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,593,467

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* |_|

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     4.9%

14   TYPE OF REPORTING PERSON*

     PN


                        Pursuant to Rule 13d-1 under the
                   Securities Exchange Act of 1934, as amended

Item 1.    Security and Issuer.

     This Statement on Schedule 13D/A (this "Statement") relates to the common
stock, par value $0.001 per share (the "Common Stock") and Series A 10%
Cumulative Preferred Stock ("Series A Preferred Stock"), of Southwall
Technologies Inc., a Delaware corporation (the "Company"). The principal
executive offices of the Company are located at 1029 Corporation Way, Palo Alto,
California 94303.

Item 2.    Identity and Background.

     (a)-(c) and (f) This Statement is filed by Needham & Company, LLC, a
Delaware limited liability company ("Needham & Co."), Needham Investment
Management L.L.C., a Delaware limited liability company ("NIM"), George A.
Needham, a natural person who is a U.S. citizen, Needham Capital Partners II,
L.P., a Delaware limited partnership ("NCPII"), Needham Capital Partners III,
L.P, a Delaware limited partnership ("NCPIII"), Needham Capital Partners IIIA,
L.P, a Delaware limited partnership ("NCPIIIA"), Needham Capital Partners II
(Bermuda), L.P., a Bermuda limited partnership ("NCPIIB"), Needham Capital
Partners III (Bermuda), L.P., a Bermuda limited partnership ("NCPIIIB"), Needham
Capital Management L.L.C., a Delaware limited liability company ("NCM"), and
Needham Capital Management (Bermuda) L.L.C., a Bermuda limited liability company
("NCMB"). Needham & Co., NIM, George A. Needham, NCPII, NCPIII, NCPIIIA, NCPIIB,
NCPIIIB, NCM and NCMB are collectively referred to in this Statement as the
"Reporting Persons."

     The principal business office and mailing address of the Reporting Persons
is c/o Needham & Company, LLC, 445 Park Avenue, New York, New York 10022.
Needham & Co. is an investment banking, securities and asset management firm.
The business of NIM is serving as the investment manager or general partner of
certain private investment partnerships and certain private investment funds.
The business of NCM is serving as the general partner of NCPII, NCPIII and
NCPIIIA, each of which are private investment partnerships. The business of NCMB
is serving as the general partner of NCPIIB AND NCPIIIB, each of which are
private investment partnerships. The present principal occupation of George A.
Needham is Chairman of the Board and Chief Executive Officer of Needham & Co.
The name and principal occupation or employment of the executive officers,
directors or general partners of the Reporting Persons are set forth on Schedule
I to this Statement.

     (d) and (e) During the past five years, none of the Reporting Persons or,
to the best knowledge of the Reporting Persons, any of the persons listed on
Schedule I, (i) has been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors) or (ii) has been a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such proceeding was or is subject to a judgment, decree or final
order enjoining future violations of, or prohibiting or mandating activities
subject to, Federal or State securities laws or finding any violation with
respect to such laws.

Item 3.    Source and Amount of Funds or Other Consideration.

     As of the date hereof, the Reporting Persons may be deemed to beneficially
own 11,355,446 shares of Common Stock and 3,261,666 shares of Series A Preferred
Stock. The source of funds used to purchase the securities reported herein was
working capital of the Reporting Persons. No borrowed funds were used to
purchase the securities, other than any borrowed funds used for working capital
purposes in the ordinary course of business.

     On December 31, 2004, Needham Capital Partners II, L.P., Needham Capital
Partners II (Bermuda), L.P., Needham Capital Partners III, L.P., Needham Capital
Partners IIIA, L.P., Needham Capital Partners III (Bermuda), L.P. elected to
convert all outstanding principal of, and accrued but unpaid interest on, their
secured convertible promissory notes (the "Convertible Notes") of Southwall
Technologies Inc. ("Southwall") into shares of Series A Preferred Stock. The
Convertible Notes by their terms were convertible at the option of the holders
into Series A Preferred Stock at a rate of one share for each $1.00 of principal
or interest converted.

     The aggregate principal amount of the Convertible Notes converted by the
Note Holders was $4,500,000, and the interest accrued thereon as of the time of
conversion was $392,499; therefore, the aggregate number of shares of Series A
Preferred Stock issued as a result of the conversions was $4,892,499. In
particular, the Convertible Note held by Needham Capital Partners II, L.P., in
the original principal amount of $877,058, was converted into 953,557 shares of
Series A Preferred Stock; the Convertible Note held by Needham Capital Partners
II (Bermuda), L.P., in the original principal amount of $122,942, was converted
into 133,665 shares of Series A Preferred Stock; the Convertible Note held by
Needham Capital Partners III, L.P. in the original principal amount of
$1,535,416, was converted into 1,669,338 shares of Series A Preferred Stock; the
Convertible Note held by Needham Capital Partners IIIA, L.P. in the original
principal amount of $158,571, was converted into 172,402 shares of Series A
Preferred Stock; and the Convertible Note held by Needham Capital Partner III
(Bermuda), L.P., in the original principal amount of $306,013, was converted
into 332,704 shares of Series A Preferred Stock.

     The Convertible Notes were originally issued to the Note Holders pursuant
to the Amended and Restated Investment Agreement dated February 20, 2004, by and
among Southwall, Needham & Company, Inc. and the Note Holders. The Convertible
Notes and Series A Preferred Stock issued to the Note Holders upon conversion
were issued without registration and only to accredited investors in reliance
upon Rule 506 of the Securities Act of 1933, as amended.

Item 4.    Purpose of Transaction.

     The Investment Agreement pursuant to which the warrants were issued to
Needham & Co. is described in the Schedule 13D filed by the Reporting Persons on
March 8, 2003.

     The Reporting Persons have no plans or proposals which relate to or which
would result in or relate to any of the actions specified in paragraphs (a)
through (j) of Item 4 of Schedule 13D.

Item 5.    Interest in Securities of the Issuer.

     (a) (1) Needham & Co. owns 2,009,807 shares of Common Stock, which would
constitute 6.1% of the issued and outstanding Common Stock.

     (2) NIM may be deemed to own beneficially the aggregate amount of 1,428,000
shares of Common Stock owned by certain private investment partnerships and
certain registered investment companies by virtue of its position as general
partner and investment adviser, respectively, of those private investment
partnerships and registered investment companies, which amount constitutes 4.4%
of the issued and outstanding Common Stock. NIM disclaims beneficial ownership
of all of the reported shares of Common Stock owned by the certain private
investment partnerships and funds, and the inclusion of these shares of Common
Stock in this report shall not be deemed an admission by it of beneficial
ownership of such shares for any purpose.

     (3) George A. Needham may be deemed to beneficially own (i) the shares of
Common Stock owned by Needham & Co. by virtue of his position in and share
ownership of Needham & Co., (ii) the shares of Common Stock beneficially owned
by certain private investment partnerships managed by NIM by virtue of his
position as manager of NIM (iii) the Common Stock and Series A Preferred Common
Stock owned NCPII, NCPIII and NCPIIIA by virtue of his position as a manager of
NCM, the general partner of NCPII, NCPIII, and NCPIIIA, (iv) the Common Stock
and Series A Preferred Common Stock beneficially owned by NCPIIB and NCPIIIB by
virtue of his position as a manager of NCMB and (v) shares of Common Stock held
in personal accounts. The aggregate amount of shares of Common Stock (assuming
full conversion of all Series A Preferred Common Stock owned by the Reporting
Persons) owned by Mr. Needham is 13,889,112, which constitutes 42.4% of the
issued and outstanding shares of Common Stock. Mr. Needham disclaims beneficial
ownership of all of the reported shares of Common Stock and the Series A
Preferred Common Stock, except to the extent of his pecuniary interest and the
inclusion of these shares in this report shall not be deemed an admission by him
of beneficial ownership for any purpose, except to the extent of his pecuniary
interest.

     (4) NCPII owns of record and beneficially (i) 953,557 shares of Series A
Preferred Stock, which in turn is convertible to 953,557 shares of Common Stock,
subject to adjustments applicable to the Series A Preferred Stock, and (ii)
2,304,511 shares of Common Stock. Assuming full conversion of the Series A
Preferred Stock, NCPII would own of record 3,258,068 shares of Common Stock,
which would constitute 10.0% of the issued and outstanding Common Stock.

     (5) NCPIII owns of record and beneficially (i) 1,669,338 shares of Series A
Preferred Stock, which in turn is convertible to 1,669,338 shares of Common
Stock, subject to adjustments applicable to the Series A Preferred Stock, and
(ii) 4,034,378 shares of Common Stock. Assuming full conversion of the Series A
Preferred Stock, NCPIII would own of record 5,703,716 shares of Common Stock,
which would constitute 17.4% of the issued and outstanding Common Stock.

     (6) NCPIIIA owns of record and beneficially (i) 172,402 shares of Series A
Preferred Stock, which in turn is convertible to 172,402 shares of Common Stock,
subject to adjustments applicable to the Series A Preferred Stock, and (ii)
416,552 shares of Common Stock. Assuming full conversion of the Series A
Preferred Stock, NCPIIIA would own of record 589,054 shares of Common Stock,
which would constitute 1.8% of the issued and outstanding Common Stock.

     (7) NCPIIB owns of record and beneficially (i) 133,665 shares of Series A
Preferred Stock, which in turn is convertible to 133,665 shares of Common Stock,
subject to adjustments applicable to the Series A Preferred Stock, and (ii)
323,035 shares of Common Stock. Assuming full conversion of the Series A
Preferred Stock, NCPIIB would own of record 456,700 shares of Common Stock,
which would constitute 1.4% of the issued and outstanding Common Stock.

     (8) NCPIIIB owns of record and beneficially (i) 332,704 shares of Series A
Preferred Stock, which in turn is convertible to 332,704 shares of Common Stock,
subject to adjustments applicable to the Series A Preferred Stock, and (ii)
804,063 shares of Common Stock. Assuming full conversion of the Series A
Preferred Stock, NCPIIIB would own of record 1,136,767 shares of Common Stock,
which would constitute 3.5% of the issued and outstanding Common Stock.

     (9) NCM may be deemed to own beneficially the Common and Series A Preferred
Stock owned by NCPII and, NCPIII by virtue of its position as general partner of
those Reporting Persons, and accordingly may be deemed to beneficially own the
9,550,838 shares of Common Stock, which amount constitute 29.2% of the issued
and outstanding Common Stock. NCM disclaims beneficial ownership of all of the
reported shares of Common Stock owned by NCPII, NCPIII, and the inclusion of
these shares of Common Stock in this report shall not be deemed an admission by
it of beneficial ownership of such shares for any purpose.

     (10) NCMB may be deemed to own beneficially the Common and Series A
Preferred Stock owned by certain Bermuda private investment partnerships virtue
of its position as general partner to those Bermuda private partnerships, and
accordingly may be deemed to beneficially own the 1,593,467 shares of Common
Stock, which amount constitute 4.9% of the issued and outstanding Common Stock.
NCMB disclaims beneficial ownership of all of the reported shares of Common
Stock owned by the certain Bermuda partnerships, and the inclusion of these
shares of Common Stock in this report shall not be deemed an admission by it of
beneficial ownership of such shares for any purpose.

     (b) Needham & Co. has the sole power to direct the vote and disposition of
2,009,807 shares of Common Stock. NIM, the general partner of certain private
investment partnerships and investment adviser of registered investment
companies has shared power to direct the vote and disposition of 1,428,000
shares of Common Stock directly owned by those private investment partnerships
and those registered investment companies. NCM, the general partner of NCPII,
and NCPII have shared power to direct the vote and disposition of 3,258,068
shares of Common Stock and Common Stock issuable upon the conversion of the
Series A Preferred Stock. NCM, the general partner of NCPIII, and NCPIII have
shared power to direct the vote and disposition of 5,703,716 shares of Common
Stock and Common Stock issuable upon the conversion of the Series A Preferred
Stock. NCM, the general partner of NCPIIIA, and NCPIIIA have shared power to
direct the vote and disposition of 589,054 shares of Common Stock and Common
Stock issuable upon the conversion of the Series A Preferred Stock. NCMB, the
general partner of NCPIIB, and NCPIIB have shared power to direct the vote and
disposition of 456,700 shares of Common Stock and Common Stock issuable upon the
conversion of the Series A Preferred Stock. NCMB, the general partner of
NCPIIIB, and NCPIIIB have shared power to direct the vote and disposition of
1,136,767 shares of Common Stock and Common Stock issuable upon the conversion
of the Series A Preferred Stock. George A. Needham may be deemed to have shared
power to direct the vote and disposition of (i) the shares of Common Stock owned
by Needham & Co., and the shares of Common Stock owned by Needham & Co., by
virtue of his position in and share ownership of Needham & Co., (ii) the shares
of Common Stock issuable upon the conversion of the Series A Preferred Stock and
Common Stock owned directly by NCPII, NCPIII and NCPIIIA because he serves as a
manager of NCM, the general partner of NCPII, NCPIII and NCPIIIA, (iii) the
shares of Common Stock issuable upon the conversion of the Series A Preferred
Stock the Common Stock owned directly by NCPIIB and NCPIIIB because he serves as
a manager of NCMB, the general partner of NCPIIB and NCPIIIB, and (iv) shares of
Common Stock held in personal accounts. Mr. Needham disclaims beneficial
ownership of the shares of Common Stock owned by Needham & Co., NIM, NCPII,
NCPIII, NCPIIIA and NCPIIIB.

     (c) The Reporting Persons did not effect any transactions in the securities
of the Company during the past 60 days.

     (d) and (e) Not applicable.

Item 6.    Contracts, Arrangements, Understandings or Relationships with
           respect to Securities of the Issuer.

     Other than as described in Item 4 above, to the knowledge of the Reporting
Persons, there are no contracts, arrangements, understandings or relationships
(legal or otherwise) among the persons named in Item 2 with respect to any
securities of the Company.

Item 7.    Material to be Filed as Exhibits.

1.         Joint Filing Agreement



                                    SIGNATURE

     After reasonable inquiry and to the best knowledge and belief of the
undersigned, the information set forth in this statement is true, complete and
correct.

Dated: February 14, 2006


                               NEEDHAM & COMPANY, LLC

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: Chief Financial Officer

                                   /s/ George A. Needham
                                   ---------------------
                                   George A. Needham


                               NEEDHAM INVESTMENT MANAGEMENT L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: Chief Financial Officer


                               NEEDHAM CAPITAL PARTNERS II, L.P.

                               By: Needham Capital Management L.L.C.,
                                    its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS III, L.P.

                               By: Needham Capital Management L.L.C.,
                                    its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS IIIA, L.P.

                               By: Needham Capital Management L.L.C.,
                                    its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS II (BERMUDA), L.P.

                               By: Needham Capital Management (Bermuda) L.L.C.,
                                    its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS III (BERMUDA), L.P.

                               By: Needham Capital Management (Bermuda) L.L.C.,
                                   its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


'                               NEEDHAM CAPITAL MANAGEMENT, L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL MANAGEMENT (BERMUDA), L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner



                                   Schedule I

           Executive Officers and Directors of Needham & Company, LLC

NAME OF OFFICER                                      PRINCIPAL EMPLOYMENT/OFFICE
OR DIRECTOR            BUSINESS ADDRESS              WITH NEEDHAM & COMPANY, LLC
---------------        ----------------              ---------------------------

George A. Needham      c/o The Needham Group, Inc.   President of Needham Asset
                       445 Park Avenue               Management, LLC
                       New York, New York  10022

John J. Prior, Jr.     c/o Needham & Company, LLC    Managing Director,
                       445 Park Avenue               President & Chief Executive
                       New York, New York  10022     Officer

Chad W. Keck           c/o Needham & Company, LLC    Managing Director,
                       445 Park Avenue               Vice-Chairman
                       New York, New York  10022

Warren M. Foss         c/o Needham & Company, LLC    Managing Director, Chairman
                       445 Park Avenue
                       New York, New York  10022

Mark Van Valkenburgh   c/o Needham & Company, LLC    Managing Director,
                       445 Park Avenue               Institutional Sales
                       New York, New York  10022

Sean Dwyer             c/o Needham & Company, LLC    Managing Director, Sales &
                       445 Park Avenue               Trading
                       New York, New York  10022

John Lazo              c/o Needham & Company, LLC    Managing Director, OTC &
                       445 Park Avenue               Listed Trading
                       New York, New York  10022

Theodor J. Kundtz      c/o Needham & Company, LLC    Managing Director, Director
                       445 Park Avenue               of Research
                       New York, New York  10022

Glen W. Albanese       c/o Needham & Company, LLC    Managing Director, Chief
                       445 Park Avenue               Financial Officer
                       New York, New York  10022

Andre R. Horn          c/o Needham & Company, LLC    Director
                       445 Park Avenue
                       New York, New York  10022

Edgar F. Heizer, Jr.   c/o Needham & Company, LLC    Director
                       445 Park Avenue
                       New York, New York  10022

Eugene R. White        c/o Needham & Company, LLC    Director
                       445 Park Avenue
                       New York, New York  10022

Bernard H. Lirola      c/o Needham & Company, LLC    Managing Director, Co-Head
                       445 Park Avenue               of Corporate Finance
                       New York, NY  10022

David S. Schechner     c/o Needham & Company, LLC    Managing Director, Co-Head
                       445 Park Avenue               of Corporate Finance
                       New York, NY  10022


                                   Schedule I

     Needham Investment Management L.L.C. is the sole general partner of: (a)
Needham Emerging Growth Partners, L.P., (b) Needham Contrarian Fund, L.P., and
(c) Needham Emerging Growth Partners (Caymans), L.P., and is the investment
adviser of: (a) various series of The Needham Funds, Inc., and (b) The Needham
Funds. Needham Capital Management L.L.C. is the sole general partner of (a)
Needham Capital Partners II, L.P., (b) Needham Capital Partners III, L.P. and
(c) Needham Capital Partners IIIA, L.P. Needham Capital Management (Bermuda)
L.L.C. is the sole general partner of (a) Needham Capital Partners II (Bermuda),
L.P. and (b) Needham Capital Partners III (Bermuda), L.P.

         The members and principals of Needham Investment Management L.L.C. are:

                                                           PRINCIPAL EMPLOYMENT/
NAME OF OFFICER                                            OFFICE WITH NEEDHAM
  OR DIRECTOR          BUSINESS ADDRESS                    & COMPANY, INC.
  -----------          ----------------                    ---------------------

George A. Needham      c/o Needham & Company, LLC          Chairman of the Board
                       445 Park Avenue                     & Chief Executive
                       New York, New York  10022           Officer

James K. Kloppenburg   c/o Needham Asset Management, LLC   Managing Director,
                       445 Park Avenue                     Portfolio Manager
                       New York, New York  10022

Glen W. Albanese       c/o Needham & Company, LLC          Managing Director,
                       445 Park Avenue                     Chief Financial
                       New York, New York  10022           Officer

     The general partners of Needham Capital Management L.L.C. are:

                                                         PRINCIPAL EMPLOYMENT/
NAME OF OFFICER                                          OFFICE WITH NEEDHAM
OR DIRECTOR           BUSINESS ADDRESS                   & COMPANY, INC.
-----------           ----------------                   -----------------------

George A. Needham    c/o Needham & Company, LLC          Chairman of the Board &
                     445 Park Avenue                     Chief Executive Officer
                     New York, New York  10022

John J. Prior, Jr.   c/o Needham & Company, LLC          Managing Director,
                     445 Park Avenue                     Corporate Finance
                     New York, New York  10022

Thomas P. Shanahan   c/o Needham Asset Management, LLC   Managing Director,
                     445 Park Avenue                     Needham Asset
                     New York, New York  10022           Management, LLC

Glen W. Albanese     c/o Needham & Company, LLC          Managing Director,
                     445 Park Avenue                     Chief Financial Officer
                     New York, New York  10022

     The general partners of Needham Capital Management (Bermuda) L.L.C. are:

                                                         PRINCIPAL EMPLOYMENT/
NAME OF OFFICER                                          OFFICE WITH NEEDHAM
OR DIRECTOR          BUSINESS ADDRESS                    & COMPANY, INC.
-----------          ----------------                    -----------------------

George A. Needham    c/o Needham & Company, LLC          Chairman of the Board &
                     445 Park Avenue                     Chief Executive Officer
                     New York, New York  10022

John J. Prior, Jr.   c/o Needham & Company, LLC          Managing Director,
                     445 Park Avenue                     Corporate Finance
                     New York, New York  10022

Thomas P. Shanahan   c/o Needham Asset Management, LLC   Managing Director,
                     445 Park Avenue                     Needham Asset
                     New York, New York  10022           Management, LLC

Glen W. Albanese     c/o Needham & Company, LLC          Managing Director,
                     445 Park Avenue                     Chief Financial Officer
                     New York, New York  10022


                             JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(f) promulgated under the Securities Exchange
Act of 1934, as amended, the undersigned hereby agree to the joint filing with
all other Reporting Persons (as such term is defined in the Schedule 13D
referred to below) on behalf of each of them of a statement on Schedule 13D
(including amendments thereto) with respect to the common shares of beneficial
interest, par value $.001 per share, of Southwall Technologies Inc., a Delaware
corporation, and that this Agreement may be included as an Exhibit to such joint
filing. This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same instrument.

     IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of the
14th day of February, 2006.


                               NEEDHAM & COMPANY, LLC

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: Chief Financial Officer

                                          /s/ Glen W. Albanese
                                          --------------------
                                              George A. Needham

                               NEEDHAM INVESTMENT MANAGEMENT L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: Chief Financial Officer


                               NEEDHAM CAPITAL PARTNERS II, L.P.

                               By: Needham Capital Management L.L.C.,
                                   its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS III, L.P.

                               By: Needham Capital Management L.L.C.,
                                    its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS IIIA, L.P.

                               By: Needham Capital Management L.L.C.,
                                   its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS II (BERMUDA), L.P.

                               By: Needham Capital Management (Bermuda) L.L.C.,
                                   its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL PARTNERS III (BERMUDA), L.P.

                               By: Needham Capital Management (Bermuda) L.L.C.,
                                   its general partner

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL MANAGEMENT, L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner


                               NEEDHAM CAPITAL MANAGEMENT (BERMUDA), L.L.C.

                               By: /s/ Glen W. Albanese
                                   ------------------------
                                   Name:  Glen W. Albanese
                                   Title: General Partner

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