SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  -------------

                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934



       Date of report (Date of earliest event reported): October 22, 2003

                            FORRESTER RESEARCH, INC.
                 (Exact Name of Registrant Specified in Charter)

          Delaware                     000-21433               04-2797789
(State or Other Jurisdiction          (Commission           (I.R.S. Employer
      of Incorporation)               File Number)         Identification No.)


400 Technology Square, Cambridge, Massachusetts               02139
(Address of Principal Executive Offices)                    (Zip Code)



Registrant's telephone number, including area code: (617) 613-6000

                                       N/A
- ------------------------------------------------------------------------------
         (Former Name or Former Address, if Changed Since Last Report)

ITEM 7. Financial Statements and Exhibits. (c) Exhibits 99.1 Press Release dated October 22, 2003. ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION. The information contained in this current report on Form 8-K is furnished pursuant to Item 12 of Form 8-K "Results of Operations and Financial Condition". This information and the exhibits hereto are being furnished and shall not be deemed to be "filed" for the purposes of Section 18 of, or otherwise regarded as filed under, the Securities Exchange Act of 1934, as amended. The information contained in this report shall not be incorporated by reference into any filing of Forrester Research, Inc. with the SEC, whether made before or after the date hereof, regardless of any general incorporation language in such filings. On October 22, 2003, Forrester Research, Inc. issued a press release announcing its financial results for the quarter ended September 30, 2003, the full text of which is attached hereto as Exhibit 99.1. Forrester believes that pro forma financial results provide investors with consistent and comparable information to aid in the understanding of Forrester's ongoing business. Our pro forma presentation excludes the following: Amortization of acquisition-related intangibles - we exclude the non-cash effect of the amortization of acquisition-related intangibles from our pro forma results in order to more consistently present our ongoing results of operations. Integration costs - we exclude the costs related to our acquisition of Giga, which are primarily related to orientation events and data migration, in order to present a consistent basis for quarterly comparisons. Impairments of non-marketable securities - we have consistently excluded both one-time gains and one-time write-offs related to our investments in non-marketable securities from our pro forma results in order to keep quarter over quarter comparisons consistent. Reorganization costs - we exclude reorganization costs from our first quarter 2002 pro forma results because our failure to do so would present a misleading improvement in our pro forma results in the nine months ended September 30, 2003 as compared to the same period in 2002. However, these measures should be considered in addition to, not as a substitute for, or superior to, operating income or other measures of financial performance prepared in accordance with generally accepted accounting principles as more fully discussed in the Forrester's financial statements and filings with the Securities and Exchange Commission.

SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. FORRESTER RESEARCH, INC. By: /s/ WARREN HADLEY ----------------- Name: Warren Hadley Title: Treasurer and Chief Financial Officer Dated: October 22, 2003

Exhibit Index Exhibit Description Page - ------- ----------- ---- 99.1 Press Release dated October 22, 2003. 5

                                                                    Exhibit 99.1

  Forrester Research Announces Third-Quarter 2003 Financial Results

    CAMBRIDGE, Mass.--(BUSINESS WIRE)--Oct. 22, 2003--Forrester
Research, Inc. (Nasdaq: FORR) today announced financial results for
the third quarter ended September 30, 2003, in line with its previous
financial guidance.

    Third-Quarter Financial Performance

    --  Total revenues were $32.2 million, compared with $21.9 million
        for the third quarter of last year.

    --  On a GAAP-reported basis, which reflects an effective tax rate
        of 31 percent, Forrester reported third-quarter net income of
        $186,000, or $0.01 per diluted share compared to a net loss of
        $307,000, or ($0.01) per diluted share for the same period
        last year.

    --  On a pro forma basis, which excludes amortization of
        acquisition-related intangible assets of $2.6 million, costs
        of $167,000 related to the integration of Giga Information
        Group, Inc., and reorganization costs of $1.2 million, and
        which reflects a pro forma effective tax rate of 35 percent,
        net income was $2.8 million, or $0.12 per diluted share, for
        the third quarter of 2003. This compares with pro forma net
        income of $2.6 million, or $0.11 per diluted share for the
        same period last year, which excludes amortization of
        acquisition-related intangible assets of $82,000, impairments
        of certain non-marketable securities of $859,000, and
        reorganization costs of $3.1 million.

    Nine-Month Period Ended September 30, 2003 Financial Performance

    --  Total revenues were $90.7 million, compared with $73.4 million
        for the same period last year.

    --  On a GAAP-reported basis, which reflects an effective tax rate
        of 31 percent, Forrester reported net income of $2.1 million,
        or $0.09 per diluted share for the nine months ended 2003,
        compared to a net loss of $2.9 million or ($0.12) per diluted
        share for the same period last year.

    --  On a pro forma basis, which excludes amortization of
        acquisition-related intangible assets of $6.1 million, costs
        of $938,000 related to the integration of Giga Information
        Group, Inc., reorganization costs of $1.2 million, and a
        write-down of $572,000 related to impairments of certain
        non-marketable securities, and which reflects a pro forma
        effective tax rate of 35 percent, net income was $7.8 million,
        or $0.34 per diluted share, for the nine months ended 2003.
        This compares with pro forma net income of $9.0 million, or
        $0.38 per diluted share for the same period last year, which
        excludes a reorganization charge of $12.2 million,
        amortization of acquisition-related intangible assets of
        $246,000, and impairments of certain non-marketable securities
        of $3.6 million.

    A reconciliation of GAAP results to pro forma results may be found
in the attached financial tables.
    "The third quarter showed modest improvement in Forrester's
business," said George F. Colony, chairman of the board and chief
executive officer. "New business as well as cross-sell business
between legacy Forrester and Giga accounts increased. Companies began
to emerge from their hibernation to become more engaged in technology
projects and technology spending. I'm cautiously optimistic about our
business based on the slight improvement we saw in the third quarter."
    Forrester also continued to make major progress toward finalizing
the integration of Giga. "During the third quarter, we completed the
final steps in the organizational integration of the two companies,"
said Colony. "We are one team across Forrester. Now early in the
fourth quarter, we are rolling out a significantly enhanced research
offering called WholeView 2(TM) that combines the best of Forrester
and Giga. Whole View 2 is a comprehensive, collaborative view of
technology from deep IT issues to broad business issues. WholeView 2,
developed after extensive research and planning that included input
from numerous clients, is being marketed and sold during the fourth
quarter."
    The Forrester Oval Program(TM), comprising five technology boards,
continued to gain traction during the third quarter. The CIO Group
added 18 new CIOs from large corporations. The four technology
Councils -- boards for non-CIO technology professionals -- gained 17
new members for a total Oval membership of 190.

    Forrester is providing financial guidance as follows:

    Fourth-Quarter 2003 (GAAP):

    --  Total revenues of approximately $32.0 million to $35.0
        million.

    --  Operating margin of approximately 5 percent to 8 percent,
        which assumes that no charges related to the San Francisco
        office lease are incurred during 2003.

    --  Other income of approximately $700,000 to $800,000.

    --  An effective tax rate of 31 percent.

    --  Diluted earnings per share of approximately $0.06 to $0.10,
        which assumes that no charges related to the San Francisco
        office lease are incurred during 2003.

    Fourth-Quarter 2003 (Pro Forma):

    Pro forma financial guidance for the fourth quarter 2003 excludes
amortization of acquisition-related intangible assets of approximately
$2.6 million and any impairment charges related to non-marketable
investments.

    --  Pro forma operating margin of approximately 14 percent to 16
        percent.

    --  Pro forma effective tax rate of 35 percent, which varies from
        our actual effective tax rate of 31 percent because of our
        tax-free interest income decreasing as a percentage of our pro
        forma pre-tax income.

    --  Pro forma diluted earnings per share of approximately $0.15 to
        $0.17.

    Full-Year 2003 (GAAP):

    --  Total revenues of approximately $120.0 million to $125.0
        million.

    --  Operating margin of approximately (1) percent to 4 percent,
        which assumes that no charges related to the San Francisco
        office lease are incurred during 2003.

    --  Other income of approximately $3.8 million to $4.2 million.

    --  An effective tax rate of 31 percent.

    --  Diluted earnings per share of approximately $0.12 to $0.20,
        which assumes that no charges related to the San Francisco
        office lease are incurred during 2003.

    Full-Year 2003 (Pro Forma):

    Pro forma financial guidance for the full-year 2003 excludes
amortization of acquisition-related intangible assets of approximately
$8.7 million, impairment charges related to non-marketable
investments, and reorganization and integration charges of
approximately $2.2 million.

    --  Pro forma operating margin of approximately 10 percent to 12
        percent.

    --  Pro forma effective tax rate of 35 percent, which varies from
        our actual effective tax rate of 31 percent because of our
        tax-free interest income decreasing as a percentage of our pro
        forma pre-tax income.

    --  Pro forma diluted earnings per share of approximately $0.47 to
        $0.53.

    Separately, Forrester General Counsel Timothy J. Moynihan is
leaving the company at the end of 2003.

    A search for a new general counsel is under way.

    Forrester is an independent technology research company that
provides both pragmatic and forward-thinking advice about technology's
impact on business. Business, marketing, and IT professionals
worldwide collaborate with Forrester to align their technology
investments with their business goals. Forrester offers products and
services in four major areas: Research, Data, Consulting, and
Community. In February 2003, Forrester acquired Giga Information
Group. Established in 1983, Forrester is headquartered in Cambridge,
Mass. For additional information, visit www.forrester.com.
    This press release contains forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995. These
statements include, but are not limited to, Forrester's financial and
operating targets for the fourth quarter of and full-year 2003,
statements about the potential success of WholeView(TM) and other
product offerings, Forrester's ability to successfully integrate Giga,
and the ability of Forrester to achieve success as the economy
improves. These statements are based on Forrester's current plans and
expectations and involve risks and uncertainties that could cause
actual future activities and results of operations to be materially
different from those set forth in the forward-looking statements.
Important factors that could cause actual future activities and
results to differ include, among others, Forrester's ability to
successfully integrate Giga into Forrester's operations, Forrester's
ability to anticipate business and economic conditions, market trends,
competition, the ability to attract and retain professional staff,
possible variations in Forrester's quarterly operating results, risks
associated with Forrester's ability to offer new products and
services, and Forrester's dependence on renewals of its
membership-based research services and on key personnel. Forrester
Research undertakes no obligation to update publicly any
forward-looking statements, whether as a result of new information,
future events, or otherwise. For further information, please refer to
Forrester's reports and filings with the Securities and Exchange
Commission.
    The consolidated statements of income, consolidated balance
sheets, and consolidated statements of cash flows are attached.


Kimberly Maxwell                   Karyl Levinson
Director, Investor Relations       Director, Corporate Communications
Forrester Research, Inc.           Forrester Research, Inc.
+1 617/613-6234                    +1 617/613-6262
kmaxwell@forrester.com             press@forrester.com

    (C) 2003, Forrester Research, Inc. All rights reserved. Forrester,
WholeView, WholeView 2, and Forrester Oval Program are trademarks of
Forrester Research, Inc.


Forrester Research, Inc.
Consolidated Statements Of Income
- ----------------------------------------------------------------------
(In thousands, except per share data)


                             Three months ended    Nine months ended
                                 September 30,        September 30,
                                   2003     2002     2003 (2)    2002
                             -------------------- --------------------
                                   (Unaudited)          (Unaudited)

Revenues
   Research services            $23,798  $16,984     $68,169  $54,802
   Advisory services and
    other                         8,410    4,954      22,499   18,625
                             ----------- -------- ----------- --------

Total revenues                   32,208   21,938      90,668   73,427

Operating expenses
   Cost of services and
    fulfillment                  12,525    7,540      36,380   25,394
   Selling and marketing         10,749    7,094      29,523   23,820
   General and
    administrative                3,927    2,889      10,985    9,590
   Depreciation and
    amortization                  1,520    1,947       5,052    6,001
   Amortization of
    intangible assets             2,608       82       6,140      246
   Integration costs                167        -         938        -
   Reorganization costs           1,230    3,082       1,230   12,170
                             ----------- -------- ----------- --------

Total operating expenses         32,726   22,634      90,248   77,221

   (Loss) income from
    operations                     (518)    (696)        420   (3,794)

   Other income, net                787    1,221       3,201    4,262
   Impairments of non-
    marketable investments            -     (859)       (572)  (3,593)
                             ----------- -------- ----------- --------

   Income (loss) before
    income taxes                    269     (334)      3,049   (3,125)

   Income tax provision
    (benefit)                        83      (27)        945     (250)
                             ----------- -------- ----------- --------

   Net income (loss)               $186    $(307)     $2,104  $(2,875)
                             =========== ======== =========== ========


   Diluted earnings (loss)
    per share                     $0.01   $(0.01)      $0.09   $(0.12)
                             =========== ======== =========== ========
   Diluted weighted average
    shares outstanding           22,741   23,263      22,793   23,254
                             =========== ======== =========== ========


   Basic earnings (loss)
    per share                     $0.01   $(0.01)      $0.09   $(0.12)
                             =========== ======== =========== ========
   Basic weighted average
    shares outstanding           22,462   23,263      22,572   23,254
                             =========== ======== =========== ========


Pro forma data (1):
   (Loss) income from
    operations                     (518)    (696)        420   (3,794)
   Amortization of
    intangible assets             2,608       82       6,140      246
   Integration costs                167        -         938        -
   Reorganization costs           1,230    3,082       1,230   12,170
                             ----------- -------- ----------- --------
   Pro forma income from
    operations                    3,487    2,468       8,728    8,622

   Other income, net                787    1,221       3,201    4,262
                             ----------- -------- ----------- --------
   Pro forma income before
    income taxes                  4,274    3,689      11,929   12,884

   Pro forma income tax
    provision                     1,496    1,107       4,175    3,865
                             ----------- -------- ----------- --------

   Pro forma net income          $2,778   $2,582      $7,754   $9,019
                             =========== ======== =========== ========

   Pro forma diluted
    earnings per share            $0.12    $0.11       $0.34    $0.38
                             =========== ======== =========== ========
   Diluted weighted average
    shares outstanding           22,741   23,562      22,793   23,801
                             =========== ======== =========== ========

(1) The pro forma data excludes amortization of intangibles and other
    integration costs related to acquisitions, reorganization costs,
    and impairments of non-marketable investments, as well as their
    related tax effects. This does not purport to be prepared in
    accordance with Generally Accepted Accounting Principles. Due to
    the significance of these items, management believes that the pro
    forma presentation aids in the comparability of results.

(2) Results for the nine months ended September 30, 2003 reflect a
    $1.1 million reclassification related to the fair value assessment
    of deferred revenue with regard to our purchase of Giga
    Information Group, Inc., that reduces research services revenues
    and reduces selling and marketing expenses in order to be
    consistent with the presentation for the three months ended
    September 30, 2003.


Forrester Research, Inc.
Consolidated Balance Sheets
- ---------------------------------------------------------------------
(In thousands)
                                               September   December
                                                      30,       31,
                                                     2003      2002
                                               ----------- ---------
                                               (unaudited)
Assets
  Cash and cash equivalents                       $11,342   $11,479
  Marketable securities                           117,539   183,152
  Accounts receivable, net                         19,655    17,791
  Deferred commissions                              4,008     3,524
  Prepaid expenses and other current assets         6,962     5,902
                                               ----------- ---------
Total current assets                              159,506   221,848
  Property and equipment, net                       9,045    10,674
  Goodwill, net                                    55,096    13,244
  Intangibles assets, net                          14,104       760
  Deferred income taxes                            37,538    21,630
  Non-marketable investments and other assets      14,688    10,117
                                               ----------- ---------
Total assets                                     $289,977  $278,273
                                               =========== =========

Liabilities and stockholders' equity
  Accounts payable                                 $1,757    $1,601
  Accrued expenses                                 27,650    20,681
  Deferred revenue                                 51,606    42,123
                                               ----------- ---------
Total liabilities                                  81,013    64,405
  Preferred stock                                       -         -
  Common stock                                        242       240
  Additional paid-in capital                      170,447   167,935
  Retained earnings                                66,858    64,754
  Treasury stock, at cost                         (28,881)  (20,085)
  Accumulated other comprehensive income              298     1,024
                                               ----------- ---------
Total stockholders' equity                        208,964   213,868
                                               ----------- ---------
Total liabilities and stockholders' equity       $289,977  $278,273
                                               =========== =========


Forrester Research, Inc.
Consolidated Statements Cash Flows
- ----------------------------------------------------------------------
(In thousands)
                                                  Nine months ended
                                                     September 30,
                                                       2003      2002
                                                 ---------------------
                                                        (Unaudited)

Cash flows from operations
  Net income (loss)                                   2,104    (2,875)
  Adjustments to reconcile net income (loss) to
    net cash provided by operating activities -
        Depreciation and amortization                 5,052     6,001
        Amortization of intangible assets             6,140       246
        Impairments of non-marketable investments       572     3,593
        Realized gain on sale of marketable
         securities                                    (509)        -
        Tax benefit from stock options                  239     2,179
        Deferred income taxes                           747       437
        Non-cash reorganization costs                     -     3,629
        Increase in provision for doubtful
         accounts                                         -       196
        Loss on disposal of property and
         equipment                                        -        92
        Amortization of premiums on marketable
         securities                                     618       868
        Changes in assets and liabilities, net of
         acquisition -
          Accounts receivable                         9,088    13,541
          Deferred commissions                         (434)    1,642
          Prepaid expenses and other                  2,401    (1,923)
          Accounts payable                           (1,395)     (711)
          Accrued expenses                           (4,714)   (2,369)
          Deferred revenue                          (16,914)  (20,659)
                                                 ----------- ---------
Net cash provided by operating activities             2,995     3,887

Cash flows from investing activities
  Acquisition of Giga Information Group, Inc.,
   net of cash acquired                             (57,027)        -
  Purchases of property and equipment                (1,122)   (1,028)
  Purchase of non-marketable investment              (3,150)   (3,825)
  (Decrease) Increase in other assets                (1,439)      411
  Purchases of marketable securities               (164,338) (148,237)
  Proceeds from sales and maturities of
   marketable securities                            230,641   157,722
                                                 ----------- ---------
Net cash provided by investing activities             3,565     5,043

Cash flows from financing activities
  Proceeds from exercises of employee stock
   options                                            2,070     9,293
  Acquisition of treasury shares                     (6,796)  (14,830)
  Structured stock repurchases                       (1,793)   (2,000)
                                                 ----------- ---------
Net cash used in financing activities                (6,519)   (7,537)

Effect of exchange rate changes on cash and cash
 equivalents                                           (178)       73
                                                 ----------- ---------

Net (decrease) increase in cash and cash
 equivalents                                           (137)    1,466

Cash and cash equivalents, beginning of period       11,479    17,747
                                                 ----------- ---------

Cash and cash equivalents, end of period             11,342    19,213
                                                 =========== =========

    CONTACT: Forrester Research, Inc.
             Kimberly Maxwell, 617-613-6234
             kmaxwell@forrester.com
             Karyl Levinson, 617-613-6262
             press@forrester.com