CUSIP No. 848565107

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

                                 SCHEDULE 13D/A

                               (AMENDMENT NO. 11)

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                                Spire Corporation

                                (Name of Issuer)

                                  Common Stock

                         (Title of Class of Securities)

                                    848565107

                                 (CUSIP Number)

                            Kathryn Klinedinst, Esq.
                Greenberg Glusker Fields Claman & Machtinger LLP
                      1900 Avenue of the Stars, Suite 2100
                              Los Angeles, CA 90067
                                 (310) 201-7576

   (Name, Address and Telephone Number of Person Authorized to Receive Notices
                               and Communications)

                                November 24, 2008
             (Date of Event which Requires Filing of this Statement)

If the reporting 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 Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g),
check the following box / /.

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Section 240.13d-7(b) 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).





(1)      Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

         David Gelbaum, Trustee, The Quercus Trust

(2)      Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (A) /X/
                                                                         (B) / /

(3)      SEC Use Only

(4) Source of Funds (See Instructions)

         PF

(5)      Check if Disclosure of Legal Proceedings is Required Pursuant to Items
         2(d) or 2(e)                                                       / /

(6)      Citizenship or Place of Organization

         U.S.

                                    (7)     Sole Voting Power
                                            -0-

Number of Shares                    (8)      Shared Voting Power
Beneficially Owned                          463,449
by Each Reporting
Person With                         (9)     Sole Dispositive Power
                                            -0-

                                    (10)    Shared Dispositive Power
                                            463,449

(11)      Aggregate Amount Beneficially Owned by Each Reporting Person
         463,449

(12)     Check if the Aggregate Amount in Row (11) Excludes Certain Shares
         (See Instructions)                                                 / /

(13)     Percent of Class Represented by Amount in Row (11)
         5.6% (1)

(14)     Type of Reporting Person (See Instructions)
         IN

-------------------------
(1) Based on 8,330,688 shares of Common Stock outstanding, as reported in the
Issuer's Quarterly Report on Form 10-Q filed on 8/13/08.

                                       2


(1)      Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

         Monica Chavez, Gelbaum, The Quercus Trust

(2)      Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (A) /X/
                                                                         (B) / /

(3)      SEC Use Only

(4)      Source of Funds (See Instructions)

         PF

(5)      Check if Disclosure of Legal Proceedings is Required Pursuant to Items
         2(d) or 2(e) / /

(6)      Citizenship or Place of Organization

         U.S.

                                    (7)     Sole Voting Power
                                            -0-

Number of Shares                    (8)      Shared Voting Power
Beneficially Owned                          463,449
by Each Reporting
Person With                         (9)     Sole Dispositive Power
                                            -0-

                                    (10)    Shared Dispositive Power
                                            463,449

(11)     Aggregate Amount Beneficially Owned by Each Reporting Person
         463,449

(12)     Check if the Aggregate Amount in Row (11) Excludes Certain Shares
         (See Instructions)                                                 / /

(13)     Percent of Class Represented by Amount in Row (11)
         5.6% (1)

(14)     Type of Reporting Person (See Instructions)
         IN

-------------------------
(1) Based on 8,330,688 shares of Common Stock outstanding, as reported in the
Issuer's Quarterly Report on Form 10-Q filed on 8/13/08.

                                       3




(1)      Name of Reporting Person
         S.S. or I.R.S. Identification No. of Above Person

         The Quercus Trust

(2)      Check the Appropriate Box if a Member of a Group (See Instructions)

                                                                         (A) /X/
                                                                         (B) / /

(3)      SEC Use Only

(4)      Source of Funds (See Instructions)

         PF

(5)      Check if Disclosure of Legal Proceedings is Required Pursuant to Items
         2(d) or 2(e) / /

(6)      Citizenship or Place of Organization

         U.S.

                                    (7)     Sole Voting Power
                                            -

Number of Shares                    (8)      Shared Voting Power
Beneficially Owned                          463,449
by Each Reporting
Person With                         (9)     Sole Dispositive Power
                                            -0-

                                    (10)    Shared Dispositive Power
                                            463,449

(11)     Aggregate Amount Beneficially Owned by Each Reporting Person
         463,449

(12)     Check if the Aggregate Amount in Row (11) Excludes Certain Shares
         (See Instructions)                                                 / /

(13)     Percent of Class Represented by Amount in Row (11)
         5.6% (1)

(14)     Type of Reporting Person (See Instructions)
         OO

-------------------------
(1) Based on 8,330,688 shares of Common Stock outstanding, as reported in the
Issuer's Quarterly Report on Form 10-Q filed on 8/13/08.

                                       4


Item 1.

         This Amendment No. 11 to Schedule 13D (this "Amendment No. 11") amends
and restates, where indicated, the statement on Schedule 13D relating to the
Common Stock of the Issuer filed by The Quercus Trust, David Gelbaum and Monica
Chavez Gelbaum (the "Reporting Persons") with the Securities and Exchange
Commission on August 31, 2007 (the "Initial Schedule 13D") and prior amendments
thereto. Capitalized terms used in this Amendment No. 11 but not otherwise
defined herein have the meanings given to them in the Initial Schedule 13D or
prior amendments thereto.

         This Amendment No. 11 is being made to disclose the disposition of
shares of Common Stock of the Issuer. Except as otherwise set forth herein, this
Amendment No. 11 does not modify any of the information previously reported by
the Reporting Persons in the Initial Schedule 13D or prior amendments thereto.

Item 5.  Interest in Securities of the Issuer

         (a) As of the date of this Amendment No. 11, each reporting person
beneficially owns 463,449 shares of Common Stock, which are held of record by
the Trust.

         (b) Each of David Gelbaum and Monica Chavez Gelbaum, acting alone, has
the power to exercise voting and investment control over the shares of Common
Stock owned by the Trust.

         (c) Since November 4, 2008, the Reporting Persons have sold shares of
Common Stock in brokered transactions as follows:

                Date                   Number of Share           Price Per Share

              11/5/2008                     -1916                    $ 8.3082
              11/6/2008                     -2200                    $ 7.6523
              11/7/2008                     -2200                    $ 7.4451
             11/10/2008                     -1500                    $ 7.0308
             11/11/2008                     -900                     $ 6.6311
             11/12/2008                     -800                     $ 6.2425
             11/13/2008                     -8400                    $ 4.7978
             11/14/2008                    -20852                    $ 3.7267
             11/17/2008                     -4502                    $ 3.4277
             11/18/2008                     -5183                    $ 3.1803
             11/19/2008                     -7360                    $ 3.2954
             11/20/2008                     -8400                    $ 3.2769
             11/21/2008                     -3949                    $ 3.2266
             11/24/2008                    -44490                    $ 3.0767

         (d) Not applicable.

         (e) Not applicable.

Item 6.  Contracts, Arrangements, Understandings or Relationships With
         Respect to Securities of the Issuer

         Pursuant to the Power of Attorney filed as Exhibit "B" to Amendment No.
1 to Schedule 13D filed on August 24, 2007 with respect to the issuer Emcore
Corp., David Gelbaum has been appointed as Monica Chavez Gelbaum's
Attorney-In-Fact.

Item 7.  Material to Be Filed as Exhibits

         Exhibit A: Agreement Regarding Joint Filing of Amendment No. 11 to
         Schedule 13D.

                                       5



SIGNATURE

         After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information set forth in this
statement is true, complete and correct and agrees that this statement may be
filed jointly with the other undersigned parties.




     

Dated:  November 25, 2008                    /s/ David Gelbaum
                                            ------------------------------------------------
                                             David Gelbaum, Co-Trustee of The Quercus Trust



                                             /s/ David Gelbaum, as Attorney-In-Fact for Monica Chavez Gelbaum
                                             ----------------------------------------------------------------
                                             Monica Chavez Gelbaum, Co-Trustee of The Quercus Trust


                                             /s/ David Gelbaum
                                             -----------------------------------------------------------
                                             The Quercus Trust, David Gelbaum, Co-Trustee of The Quercus Trust


                                       6



CUSIP No. 848565107



                                    EXHIBIT A

      AGREEMENT REGARDING JOINT FILING OF AMENDMENT NO. 11 TO SCHEDULE 13D



         The undersigned agree that the Amendment No. 11 to Schedule 13D with
respect to the Common Stock of Spire Corporation is a joint filing being made on
their behalf.




     

Dated:  November 25, 2008                    /s/ David Gelbaum
                                            ------------------------------------------------
                                             David Gelbaum, Co-Trustee of The Quercus Trust



                                             /s/ David Gelbaum, as Attorney-In-Fact for Monica Chavez Gelbaum
                                             ----------------------------------------------------------------
                                             Monica Chavez Gelbaum, Co-Trustee of The Quercus Trust


                                             /s/ David Gelbaum
                                             -----------------------------------------------------------
                                             The Quercus Trust, David Gelbaum, Co-Trustee of The Quercus Trust



                                      A-1