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): January 28, 2004

                            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 January 28, 2004. 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 January 28, 2004, Forrester Research, Inc. issued a press release announcing its financial results for the quarter and fiscal year ended December 31, 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 Information Group, Inc., 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 in order to present a consistent basis for quarterly and annual comparisons and to more consistently present our results of operations [CONFIRM]. 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: January 28, 2004 -3-

Exhibit Index Exhibit Description Page - ------- ----------- ---- 99.1 Press Release dated January 28, 2004. 5 -4-

Exhibit 99.1 Forrester Research Announces Fourth-Quarter And Full-Year 2003 Financial Results CAMBRIDGE, Mass.--(BUSINESS WIRE)--Jan. 28, 2004--Forrester Research, Inc. (Nasdaq: FORR) today announced its fourth-quarter and year-end 2003 financial results, in line with its previous financial guidance. Fourth-Quarter Financial Performance -- Total revenues were $35.3 million, compared with $23.5 million for the fourth quarter of 2002. -- On a GAAP-reported basis, which reflects an effective tax rate of 31 percent, Forrester reported fourth-quarter net income of $87,000, or $0.00 per diluted share, compared with net income of $3.5 million, or $0.15 per diluted share, for the same period in 2002. -- On a pro forma basis, which excludes amortization of $2.6 million of acquisition-related intangible assets, costs of $117,000 related to the integration of Giga Information Group, Inc. ("Giga"), reorganization costs of $1.4 million, and impairments to certain non-marketable securities of $1.8 million, and which reflects a pro forma effective tax rate of 35 percent, net income was $3.9 million, or $0.17 per diluted share, for the fourth quarter of 2003. This compares with pro forma net income of $2.8 million, or $0.12 per diluted share, for the same period in 2002, which excludes amortization of acquisition-related intangible assets of $82,000 and impairments to certain non-marketable securities of $525,000. Full-Year 2003 Financial Performance -- Total revenues were $126.0 million, compared with $96.9 million for 2002. -- On a GAAP-reported basis, which reflects an effective tax rate of 31 percent, Forrester reported net income of $2.2 million, or $0.10 per diluted share for 2003, compared with net income of $589,000, or $0.02 per diluted share, for 2002. -- On a pro forma basis, which excludes amortization of $8.8 million of acquisition-related intangible assets, costs of $1.1 million related to the integration of Giga, reorganization costs of $2.6 million, impairments to certain non-marketable securities of $2.4 million, and which reflects a pro forma effective tax rate of 35 percent, net income was $11.7 million, or $0.51 per diluted share, for 2003. This compares with pro forma net income of $11.8 million, or $0.50 per diluted share, for 2002, which excludes the amortization of acquisition-related assets of $328,000, reorganization charges of $12.2 million, and impairments to certain non-marketable securities of $4.1 million. A reconciliation of GAAP results to pro forma results may be found in the attached financial tables. "Forrester's fourth-quarter financial results continued to show signs of improvement and stabilization, including increases in deferred revenue and client retention rates," said George F. Colony, chairman of the board and chief executive officer. "We were particularly pleased with the progress we made during the quarter because approximately 40 percent of our contracts were up for renewal at the same time we began selling WholeView 2(TM), our unified Forrester-Giga research product. The initial response to WholeView 2 has been favorable from both clients and prospects. "Overall, 2003 was a very busy year for Forrester," continued Colony. "After announcing and closing the acquisition of Giga early in the year, we moved quickly to integrate the research, sales, and operational groups. Based on significant client input, we developed WholeView 2 during the second half of the year, and rolled it out as technology budgets began to relax toward the end of 2003. The integration is now complete, and we believe we are well-positioned for 2004." In connection with the integration of the December 2003 acquisition of certain assets of European distributor, GigaGroup, S.A., Forrester has reduced its European headcount by 12 employees, or approximately 2 percent of its work force. For the first quarter of 2004, Forrester expects to record a charge in the range of $1.5 million to $2.5 million related to this reduction in force and the consolidation of European office space. On an annualized basis, associated savings are estimated to be approximately $2.5 million to $3.5 million. Forrester is providing financial guidance as follows: First-Quarter 2004 (GAAP): -- Total revenues of approximately $29.0 million to $31.0 million. -- Operating margin of approximately (2) percent to (6) percent. -- Other income of approximately $650,000 to $750,000. -- An effective tax rate of 33.5 percent. -- Diluted earnings per share of approximately ($0.01) to ($0.05). First-Quarter 2004 (Pro Forma): Pro forma financial guidance for the first quarter of 2004 excludes amortization of acquisition-related intangible assets of approximately $2.3 million, a reorganization charge of approximately $1.5 million to $2.5 million, and any impairment charges related to non-marketable investments. -- 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 33.5 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 $0.09 to $0.11. Full-Year 2004 (GAAP): -- Total revenues of approximately $133.0 million to $138.0 million. -- Operating margin of approximately 4 percent to 8 percent, which assumes that no charges related to the San Francisco office lease are incurred during 2004. -- Other income of approximately $2.7 million to $2.9 million. -- An effective tax rate of 33.5 percent. -- Diluted earnings per share of approximately $0.24 to $0.29, which assumes that no charges related to the San Francisco office lease are incurred during 2004. Full-Year 2004 (Pro Forma): Pro forma financial guidance for full-year 2004 excludes amortization of acquisition-related intangible assets of approximately $6.4 million, any impairment charges related to non-marketable investments, and a reorganization charge of approximately $1.5 million to $2.5 million. -- Pro forma operating margin of approximately 11 percent to 13 percent. -- Pro forma effective tax rate of 35 percent, which varies from our actual effective tax rate of 33.5 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 $0.52 to $0.57, which assumes that no charges related to the San Francisco office lease are incurred during 2004. Separately, Forrester has hired Gail Mann as its new chief legal counsel. Mann brings 25 years of legal experience to Forrester and earned her J.D., magna cum laude, from Georgetown University Law Center. Forrester is an independent technology research company that provides 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 first quarter of and full-year 2004, statements about the potential success of WholeView 2 and other product offerings, the amount of the charge and any cost savings related to the reduction in force, 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 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 and any cost savings related to the reduction in force, and Forrester's dependence on renewals of its membership-based research services and on key personnel. Forrester 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) 2004, Forrester Research, Inc. All rights reserved. Forrester and WholeView 2 are trademarks of Forrester Research, Inc. Forrester Research, Inc. Consolidated Statements Of Income (In thousands, except per share data) Three months ended Year ended December 31, December 31, 2003 2002 2003 2002 (Unaudited) Revenues: Research services $24,120 $16,153 $92,289 $70,955 Advisory services and other 11,211 7,356 33,710 25,981 Total revenues 35,331 23,509 125,999 96,936 Operating expenses: Cost of services and fulfillment 13,667 8,632 50,047 34,026 Selling and marketing 11,494 6,925 41,017 30,745 General and administrative 3,689 3,142 14,674 12,732 Depreciation and amortization 1,204 2,077 6,256 8,078 Amortization of intangible assets 2,638 82 8,778 328 Integration costs 117 - 1,055 - Reorganization costs 1,364 - 2,594 12,170 Total operating expenses 34,173 20,858 124,421 98,079 Income (loss) from operations 1,158 2,651 1,578 (1,143) Other income, net 751 1,277 3,952 5,539 Impairments of non- marketable investments, net (1,782) (525) (2,354) (4,118) Income before income tax provision (benefit) 127 3,403 3,176 278 Income tax provision (benefit) 40 (61) 985 (311) Net income $87 $3,464 $2,191 $589 Diluted earnings per share $0.00 $0.15 $0.10 $0.02 Diluted weighted average shares outstanding 22,970 23,202 22,837 23,653 Basic earnings per share $0.00 $0.15 $0.10 $0.03 Basic weighted average shares outstanding 22,505 22,992 22,555 23,189 Pro forma data (1): Income (loss) from operations 1,158 2,651 1,578 (1,143) Amortization of intangible assets 2,638 82 8,778 328 Integration costs 117 - 1,055 - Reorganization costs 1,364 - 2,594 12,170 Pro forma income from operations 5,277 2,733 14,005 11,355 Other income, net 751 1,277 3,952 5,539 Pro forma income before income taxes 6,028 4,010 17,957 16,894 Pro forma income tax provision 2,110 1,203 6,285 5,068 Pro forma net income $3,918 $2,807 $11,672 $11,826 Pro forma diluted earnings per share $0.17 $0.12 $0.51 $0.50 Diluted weighted average shares outstanding 22,970 23,202 22,837 23,653 (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 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) December 31, 2003 2002 Assets: Cash and cash equivalents $22,385 $11,479 Marketable securities 104,348 183,152 Accounts receivable, net 40,013 17,791 Deferred commissions 5,999 3,524 Prepaid expenses and other current assets 7,079 5,902 Total current assets 179,824 221,848 Property and equipment, net 8,266 10,674 Goodwill, net 57,006 13,244 Intangibles assets, net 13,456 760 Deferred income taxes 40,159 21,630 Non-marketable investments and other assets 12,264 10,117 Total assets $310,975 $278,273 Liabilities and stockholders' equity: Accounts payable $2,566 $1,601 Accrued expenses 31,457 20,681 Deferred revenue 68,630 42,123 Total liabilities 102,653 64,405 Preferred stock - - Common stock 243 240 Additional paid-in capital 172,523 167,935 Retained earnings 66,945 64,754 Treasury stock, at cost (30,300) (20,085) Accumulated other comprehensive (loss) income (1,089) 1,024 Total stockholders' equity 208,322 213,868 Total liabilities and stockholders' equity $310,975 $278,273 Forrester Research, Inc. Consolidated Statements Of Cash Flows (In thousands) Year ended December 31, 2003 2002 Cash flows from operations: Net income 2,191 589 Adjustments to reconcile net income to net cash provided by operating activities - Depreciation and amortization 6,256 8,078 Amortization of intangible assets 8,778 328 Impairments of non-marketable investments 2,354 4,118 Realized gain on sales of marketable securities (509) - Tax benefit from exercises of employee stock options 527 2,618 Deferred income taxes (128) (2,243) Non-cash reorganization costs - 3,629 Increase in provision for doubtful accounts - 246 Loss on disposals of property and equipment - 92 Amortization of premiums on marketable securities 832 1,053 Changes in assets and liabilities, net of acquisitions - Accounts receivable (11,044) 6,608 Deferred commissions (2,426) 920 Prepaid expenses and other current assets 559 (70) Accounts payable (530) (1,194) Accrued expenses (1,741) (1,476) Deferred revenue (1,004) (17,735) Net cash provided by operating activities 4,115 5,561 Cash flows from investing activities: Acquisition of Giga Information Group, Inc., net of cash acquired (57,027) - Acquisition of GigaGroup, S.A., net of cash acquired (2,937) - Purchases of property and equipment (1,441) (1,031) Purchases of non-marketable investments (3,250) (4,775) Net (increase) decrease in other assets (1,315) 61 Purchases of marketable securities (184,151) (261,530) Proceeds from sales and maturities of marketable securities 263,093 266,324 Net cash provided by (used in) investing activities 12,972 (951) Cash flows from financing activities: Proceeds from issuance of common stock 3,772 11,284 Acquisition of treasury stock (8,215) (20,085) Structured stock repurchases (1,708) (2,000) Net cash used in financing activities (6,151) (10,801) Effect of exchange rate changes on cash and cash equivalents (30) (77) Net increase (decrease) in cash and cash equivalents 10,906 (6,268) Cash and cash equivalents, beginning of year 11,479 17,747 Cash and cash equivalents, end of year 22,385 11,479 CONTACT: Forrester Research, Inc. Kimberly Maxwell, 617-613-6234 Director, Investor Relations kmaxwell@forrester.com or Forrester Research, Inc. Karyl Levinson, 617-613-6262 Director, Corporate Communications press@forrester.com