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): August 5, 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)

                                   Page 1 of 5
                         Exhibit Index appears on Page 4


ITEM 7. Financial Statements and Exhibits. (c) Exhibits 99.1 Press Release dated August 5, 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 August 5, 2003, Forrester Research, Inc. issued a press release announcing its financial results for the quarter ended June 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 intangible assets - We exclude the non-cash effect of the amortization of acquisition-related intangibles from our pro forma results in order to present a consistent basis for quarterly comparisons. 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 present a consistent basis for quarterly comparisons of our results of operations. Reorganization costs - We exclude restructuring charges 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 six months ended June 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. -2-

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: August 5, 2003 -3-

Exhibit Index Exhibit Description Page - ------- ----------- 99.1 Press Release dated August 5, 2003. 5 -4-

                                                                    Exhibit 99.1

 Forrester Research Announces Second-Quarter 2003 Financial Results;
      Integration Of Giga Information Group Is Ahead Of Schedule

    CAMBRIDGE, Mass.--(BUSINESS WIRE)--Aug. 5, 2003--Forrester
Research, Inc. (Nasdaq: FORR) today announced financial results for
the second quarter ended June 30, 2003, in line with its previous
financial guidance.

    Second-Quarter Financial Performance

    --  Total revenues were $34.7 million, compared with $25.4 million
        for the second quarter of last year.
    --  On a GAAP-reported basis, which reflects an effective tax rate
        of 31 percent, Forrester reported second-quarter net income of
        $141,000, or $0.01 per diluted share compared to net income of
        $3.5 million, or $0.15 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 $740,000 related to the integration of Giga Information
        Group, Inc., and a net write-down of $272,000 related to
        impairments of certain non-marketable securities, and which
        reflects a pro forma effective tax rate of 35 percent, net
        income was $2.5 million, or $0.11 per diluted share, for the
        second quarter of 2003. This compares with pro forma net
        income of $3.1 million, or $0.13 per diluted share for the
        same period last year, which excludes amortization of
        acquisition-related intangible assets of $82,000 and
        impairments of certain non-marketable securities of $486,000.

    Six-Month Period Ended June 30, 2003 Financial Performance

    --  Total revenues were $59.5 million, compared with $51.5 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 $1.9 million,
        or $0.08 per diluted share for the six months ended 2003,
        compared to net loss of $2.6 million or ($0.11) per diluted
        share for the same period last year.
    --  On a pro forma basis, which excludes amortization of
        acquisition-related intangible assets of $3.5 million, costs
        of $771,000 related to the integration of Giga Information
        Group, Inc., 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 $5.0 million, or $0.22 per diluted share, for the
        six months ended 2003. This compares with pro forma net income
        of $6.4 million, or $0.27 per diluted share for the same
        period last year, which excludes a reorganization charge of
        $9.1 million, amortization of acquisition-related intangible
        assets of $164,000, and impairments of certain non-marketable
        securities of $2.7 million.

    A reconciliation of GAAP results to pro forma results may be found
in the attached financial tables.
    "Our top priorities during the second quarter were to maintain
high client satisfaction while ensuring the ongoing progress of
integrating Giga Information Group, which we acquired in February,"
said George F. Colony, chairman of the board and chief executive
officer. "The integration efforts are ahead of schedule and will
strengthen Forrester's position in the marketplace. The sales teams
recently have been integrated into one cohesive sales force, and this
month the research staff -- already collaborating on research content
- -- will be united. Our conversations with clients continue to play a
big role in developing and integrating the Forrester and Giga brands."
    In addition to the accelerated integration, the Forrester Oval
Progam(TM)'s CIO Group and Councils gained momentum during the second
quarter. The CIO Group, which provides CIOs with exclusive access to a
peer network, client-directed research, benchmark data, best
practices, and short projects, now has 93 members including new CIO
clients from Liberty Mutual, Hitachi Metals, and Lafarge North
America. Furthermore, the program's Application Development Council,
Security & Risk Management Council, Enterprise Architecture Council,
and the new Analyst Relations & Marketing Council added members,
including Washington Mutual, Acapella, and Remedy, a BMC Software
Company.

    Financial Guidance

    The integration of sales and research has resulted in a reduction
in force of 30 employees, or approximately 5 percent of the company's
work force. For the third quarter of 2003, the company expects to
record a charge in the range of $1.0 million to $2.0 million related
to the reorganization and work force reduction. On an annualized
basis, associated savings are estimated to be approximately $4.0
million to $5.0 million. In addition, Forrester is currently in the
process of evaluating its San Francisco office lease, and as a result,
may record future lease-related charges.
    The company also announced today that as part of the integration,
Forrester has combined its North American and Global operating groups.
As a result, Emily Nagle Green, managing director of Forrester North
America, has resigned to pursue other opportunities consistent with
her long-term career goals. Neil Bradford, managing director of the
Forrester Global operating group, has been named head of the expanded
North American unit.

    Forrester is providing third-quarter 2003 guidance as follows:

    Third-Quarter 2003 (GAAP):

    --  Total revenues of approximately $30.0 million to $32.0
        million.
    --  Operating margin of approximately (5) percent to 1 percent.
    --  Interest income of approximately $700,000 to $850,000.
    --  An effective tax rate of 31 percent.
    --  Diluted earnings per share of approximately ($0.03) to $0.01.

    Third-Quarter 2003 (Pro Forma):

    Pro forma financial guidance for the third quarter 2003 excludes
amortization of acquisition-related intangible assets of approximately
$2.6 million, impairment charges related to non-marketable securities,
and third-quarter reorganization and integration charges estimated at
$1.0 million to $2.0 million.

    --  Pro forma operating margin of approximately 9 percent to 11
        percent.
    --  Pro forma effective tax rate of 35 percent, which varies from
        our actual effective tax rate of 31 percent due to our
        tax-free interest income decreasing as a percentage of our pro
        forma pre-tax income.
    --  Pro forma diluted earnings per share of approximately $0.10 to
        $0.12.

    Forrester is revising its full-year 2003 GAAP guidance and
reaffirming full-year 2003 pro forma guidance as follows:

    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 any charges related to the San Francisco office
        lease are not incurred during 2003.
    --  Interest 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 any charges related to the San Francisco office
        lease are not 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 securities,
and reorganization and integration charges of approximately $2.0
million to $3.0 million, as well as charges related to terminating the
San Francisco office lease.

    --  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 due to 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.

    Forrester Research enables companies to understand the impact of
technology on business. Forrester's WholeView(TM) Research, Strategic
Services, and Events help clients understand how technology change
affects their customers, strategy, and technology investment. In
February 2003, Giga Information Group, Inc. became a wholly owned
subsidiary of Forrester Research, Inc. Giga, through its Giga
Advisory(R), Giga Consulting(TM), and Events, provides objective
research, pragmatic advice, and personalized consulting to global IT
professionals. 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 third quarter of and full-year 2003,
statements about the potential success of WholeView and other product
offerings, the anticipated cost savings related to the reorganization
and work force reduction, 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, the actual amount of the charge related to
the reorganization and work force reduction, 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.
    (C) 2003, Forrester Research, Inc. All rights reserved. Forrester,
WholeView, Technographics, and Forrester Oval Program are trademarks
of Forrester Research, Inc. Giga Advisory and Giga Consulting are
trademarks of Giga Information Group, Inc.

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


                               Three months ended    Six months ended
                                    June 30,             June 30,
                                 2003     2002         2003     2002
                                  (Unaudited)            (Unaudited)

Revenues
    Research services           $26,611  $18,008     $45,432  $37,818
    Advisory services and
     other                        8,113    7,425      14,089   13,671

Total revenues                   34,724   25,433      59,521   51,489

Operating expenses
    Cost of services and
     fulfillment                 14,330    8,873      23,855   17,854
    Selling and marketing        11,768    8,254      19,835   16,726
    General and
     administrative               3,781    3,375       7,058    6,701
    Depreciation and
     amortization                 1,839    1,988       3,532    4,054
    Amortization of
     intangible assets            2,608       82       3,532      164
    Integration costs               740        -         771        -
    Reorganization costs              -        -           -    9,088

Total operating expenses         35,066   22,572      58,583   54,587

    (Loss) income from
     operations                    (342)   2,861         938   (3,098)

    Other income, net               819    1,481       2,414    3,041
    Impairments of non-
     marketable investments        (272)    (486)       (572)  (2,734)

    Income (loss) before
     income taxes                   205    3,856       2,780   (2,791)

    Income tax provision
     (benefit)                       64      309         862     (223)

    Net income (loss)              $141   $3,547      $1,918  $(2,568)

    Diluted earnings (loss)
     per share                    $0.01    $0.15       $0.08   $(0.11)
    Diluted weighted
     average shares
     outstanding                 22,718   23,989      22,819   23,250

    Basic earnings (loss)
     per share                    $0.01    $0.15       $0.08   $(0.11)
    Basic weighted average
     shares outstanding          22,515   23,354      22,627   23,250

Pro forma data (1):
    (Loss) income from
     operations                    (342)   2,861         938   (3,098)
    Amortization of
     intangible assets            2,608       82       3,532      164
    Integration costs               740        -         771        -
    Reorganization costs              -        -           -    9,088
    Pro forma income from
     operations                   3,006    2,943       5,241    6,154

    Other income, net               819    1,481       2,414    3,041
    Pro forma income before
     income taxes                 3,825    4,424       7,655    9,195

    Pro forma income tax
     provision                    1,339    1,327       2,679    2,758

    Pro forma net income         $2,486   $3,097      $4,976   $6,437
    Pro forma diluted
     earnings per share           $0.11    $0.13       $0.22    $0.27
    Diluted weighted
     average shares
     outstanding                 22,718   23,989      22,819   23,920

    (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.


Forrester Research, Inc.
Consolidated Balance Sheets
(In thousands)

                                                June 30,  December 31,
                                                   2003      2002

Assets
       Cash and cash equivalents                  $13,881   $11,479
       Marketable securities                      121,749   183,152
       Accounts receivable, net                    18,028    17,791
       Deferred commissions                         4,784     3,524
       Prepaid expenses and other current assets    7,733     5,902
Total current assets                              166,175   221,848
       Property and equipment, net                 10,427    10,674
       Goodwill, net                               56,126    13,244
       Intangibles assets, net                     16,712       760
       Deferred income taxes                       35,367    21,630
       Non-marketable investments and other
        assets                                     12,176    10,117
Total assets                                     $296,983  $278,273

Liabilities and stockholders' equity
       Accounts payable                            $2,956    $1,601
       Accrued expenses                            24,272    20,681
       Deferred revenue                            59,487    42,123
Total liabilities                                  86,715    64,405
       Preferred stock                                  -         -
       Common stock                                   242       240
       Additional paid-in capital                 169,651   167,935
       Retained earnings                           66,672    64,754
       Treasury stock, at cost                    (27,380)  (20,085)
       Accumulated other comprehensive income       1,083     1,024
Total stockholders' equity                        210,268   213,868
Total liabilities and stockholders' equity       $296,983  $278,273


Forrester Research, Inc.
Consolidated Statements Of Cash Flows
(In thousands)
                                                     Six months ended
                                                          June 30,
                                                        2003     2002

Cash flows from operations:
      Net income (loss)                               $1,918  $(2,568)
      Adjustments to reconcile net income (loss)
       to net cash provided by operating activities-
          Depreciation                                 3,532    4,054
          Amortization of intangible assets            3,532      164
          Write-downs of non-marketable investments      572    2,734
          Loss on disposal of property and equipment       -       92
          Realized gain on sale of securities           (509)       -
          Tax benefit from stock options                 155    1,996
          Deferred income taxes                          793   (2,222)
          Non-cash reorganization costs                    -    2,772
          Increase in provision for doubtful
           accounts                                        -      196
          Accretion of premiums on marketable
           securities                                    413      376
          Changes in assets and liabilities, net of
           acquisition -
             Accounts receivable                      10,534   12,176
             Deferred commissions                     (1,260)   1,023
             Prepaid expenses and other                1,758     (932)
             Accounts payable                           (207)    (433)
             Accrued expenses                         (7,649)  (2,911)
             Deferred revenue                         (8,710) (14,206)
Net cash provided by operating activities              4,872    2,311

Cash flows from investing activities:
      Acquisition of Giga Information Group, Inc.,
       net of cash acquired                          (56,066)       -
      Purchases of property and equipment             (1,017)    (966)
      Purchase of non-marketable investments          (2,150)  (2,625)
      Decrease in other assets                            75      259
      Purchase of marketable securities             (126,158) (92,995)
      Proceeds from sales and maturities of
       marketable securities                         188,766   94,017
Net cash provided by (used in) investing activities    3,450   (2,310)

Cash flows from financing activities:
      Proceeds from issuance of common stock under
       employee stock option plans and employee
       stock purchase plan                             1,457    7,912
      Acquisition of treasury shares                  (5,295)  (7,920)
      Structured stock repurchase                     (1,892)       -
Net cash used in financing activities                 (5,730)      (8)

Effect of exchange rate changes on cash and cash
 equivalents                                            (190)     (37)

Net increase (decrease) in cash and cash equivalents   2,402      (44)

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

Cash and cash equivalents, end of period             $13,881  $17,703

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