Press Release

Harmonic Announces Third Quarter Results

October 23, 2007

Strong Growth in Sales and Earnings; Increased Revenue from Satellite Customers Worldwide; New Products Driving New Video Delivery

                               Solutions

SUNNYVALE, Calif.--(BUSINESS WIRE)--Oct. 23, 2007--Harmonic Inc. (NASDAQ: HLIT), a leading provider of broadcast and on-demand video delivery solutions, today announced its preliminary results for the quarter and nine months ended September 28, 2007.

For the third quarter of 2007, the Company reported net sales of $82.3 million, up 31% from $62.9 million in the third quarter of 2006. For the first nine months of 2007, net sales were $223.8 million, up 30% from $172.3 million in the same period of 2006. Results for the third quarter of 2007 included significant revenue from a growing number of satellite customers deploying an increasingly broad range of new products and solutions. The Company also saw sequential revenue growth in both domestic and international markets, with international sales representing 46% of revenue in the third quarter.

Gross margins also increased sequentially from the second quarter of 2007 as a result of a larger proportion of revenue from higher margin video processing solutions and software and services, partially offset by a charge of approximately $1.8 million to write down excess inventory of older products which are being replaced by the Company's new products.

GAAP net income for the third quarter of 2007 was $9.4 million or $0.12 per diluted share, up from $4.0 million, or $0.05 per diluted share, for the same period of 2006. GAAP net income for the third quarter of 2007 included a net benefit from a reduction in excess facilities reserves of approximately $1.4 million, resulting primarily from an extension of a sub-lease. Excluding the lease benefit and non-cash accounting charges for stock-based compensation expense, the amortization of intangibles, and a one-time charge for acquired in-process technology from the recent acquisition of Rhozet Corporation, the non-GAAP net income for the third quarter of 2007 was $11.9 million, or $0.15 per diluted share, up from $7.5 million, or $0.10 per diluted share, for the same period of 2006. See "GAAP to non-GAAP Income/(Loss) Reconciliation" below for further information on the Company's non-GAAP measures.

As of September 28, 2007, the Company had cash, cash equivalents and short-term investments of $99.0 million, up from $82.2 million as of June 29, 2007. During the third quarter of 2007, the Company reduced its inventories by $6.2 million compared to the previous quarter.

"We are very pleased with our strong sales and earnings growth, as well as our improved gross margins and operating efficiencies, for the third quarter and for the year-to-date," said Patrick Harshman, President and Chief Executive Officer. "We believe that we have increased our market share among domestic and international satellite operators, which has been driven by our powerful MPEG-4 AVC high-definition and standard-definition video encoders, as well as our new video processing, video-on-demand and network management solutions."

"Our cable customers continue to deploy our industry-leading encoding, video-on-demand edge and optical access products, and we see growing interest in our innovative new solutions for switched digital video, time-shifted television, video-on-demand content preparation and streaming, video-rich navigation, and higher-speed Internet data delivery. In the emerging IPTV market, our IP-based video solutions have been winning new business with telco companies worldwide and, increasingly, drive network expansions for existing global telco customers."

"We remain very encouraged by our strengthening position in key service provider markets. We expect to continue to extend the breadth and depth of our products, and we believe that our global customer base will continue to further leverage the power of our new solutions to expand their video service offerings in exciting new directions."

Business Outlook

The Company anticipates that the combined net sales for the fourth quarter of 2007 and the first quarter of 2008 will be in a range of $155 to $165 million and gross margins will be 41% to 43% on a GAAP basis. Non-GAAP gross margins for the same period, excluding stock-based compensation expense and the amortization of intangibles, are anticipated to be in a range of 45% to 47%.

Conference Call Information

Harmonic will host a conference call today to discuss its financial results at 2:00 p.m. Pacific (5:00 p.m. Eastern). A listen-only broadcast of the conference call can be accessed on the Company's website at www.harmonicinc.com or by calling +1.706.634.9047 (conference ID number 19970165). The replay will be available after 6:00 p.m. (Pacific) at the same website address or by calling +1.706.645.9291 (conference ID number 19970165).

About Harmonic Inc.

Harmonic Inc. is a leading provider of versatile and high performance video solutions that enable service providers to efficiently deliver the next generation of broadcast and on-demand services including high definition, video-on-demand, network personal video recording and time-shifted TV. Cable, satellite, broadcast and telecom service providers can utilize Harmonic's digital video, broadband optical access and software solutions to offer consumers a compelling and personalized viewing experience.

Harmonic (NASDAQ: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company's customers, including many of the world's largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.

Legal Notice Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements related to our expectation that we will experience growing cable demand for our new solutions for switched digital video, time-shifted television, video-on-demand content preparation and streaming, video-rich navigation, and higher-speed Internet data delivery; our expectation that we will continue to extend the breadth and depth of our products; our belief that our global customer base will continue to leverage the power of our new solutions to expand their video service offerings; our expectation that our combined net sales for the fourth quarter of 2007 and the first quarter of 2008 will be in the range of $155 to $165 million, our gross margins will be 41% to 43% on a GAAP basis, and our non-GAAP gross margins for the same period, excluding stock-based compensation expense and the amortization of intangibles, will be in a range of 45% to 47%. Our expectations and beliefs regarding these matters may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected. These risks include the possibility that our products will not generate sales that are commensurate with our expectations; the mix of products sold and the effect it has on gross margins; delays or decreases in capital spending in the cable, satellite and telco industries; customer concentration and consolidation; general economic conditions; market acceptance of new or existing Harmonic products; losses of one or more key customers; risks associated with Harmonic's international operations; inventory management; the effect of competition; difficulties associated with rapid technological changes in Harmonic's markets; the need to introduce new and enhanced products; and risks associated with a cyclical and unpredictable sales cycle. The forward-looking statements contained in this press release are also subject to other risks and uncertainties, including those more fully described in Harmonic's filings with the Securities and Exchange Commission, including our Annual Report filed on Form 10-K for the year ended December 31, 2006, our Quarterly Report on Form 10-Q for the quarterly period ended June 29, 2007, and our current reports on Form 8-K. Harmonic does not undertake to update any forward-looking statements.

EDITOR'S NOTE - Product and company names used herein are

trademarks or registered trademarks of their respective owners.


                            Harmonic Inc.
                Condensed Consolidated Balance Sheets
                            (In thousands)
                             (Unaudited)

                                           September 28,  December 31,
                                                2007          2006
                                           -------------- ------------
Assets
Current assets:
  Cash and cash equivalents                $      40,993  $    33,454
  Short-term investments                          58,038       58,917
  Accounts receivable, net                        69,339       64,674
  Inventories                                     36,341       42,116
  Prepaid expenses and other current assets       11,911       12,807
                                           -------------- ------------

   Total current assets                          216,622      211,968

Property and equipment, net                       14,084       14,816

Intangibles and other assets                      69,647       55,178
                                           -------------- ------------

                                           $     300,353  $   281,962
                                           ============== ============

Liabilities and stockholders' equity
Current liabilities:
  Current portion of long-term debt        $          --  $       460
  Accounts payable                                15,583       33,863
  Income taxes payable                               726        7,098
  Deferred revenue                                30,794       29,052
  Accrued liabilities                             43,904       44,097
                                           -------------- ------------

   Total current liabilities                      91,007      114,570

Accrued excess facilities costs                   11,126       16,434
Other non-current liabilities                     17,211        5,824
                                           -------------- ------------

  Total liabilities                              119,344      136,828
                                           -------------- ------------

Stockholders' equity:
  Common stock                                 2,100,140    2,078,941
  Accumulated deficit                         (1,919,025)  (1,933,708)
  Accumulated other comprehensive loss              (106)         (99)
                                           -------------- ------------

   Total stockholders' equity                    181,009      145,134
                                           -------------- ------------

                                           $     300,353  $   281,962
                                           ============== ============
                            Harmonic Inc.
           Condensed Consolidated Statements of Operations
                (In thousands, except per share data)
                             (Unaudited)

                             Three Months Ended    Nine Months Ended
                            --------------------- --------------------
                            Sept. 28,  Sept. 29,  Sept. 28,  Sept. 29,
                               2007       2006       2007      2006
                            ---------- ---------- ---------- ---------

Net sales                   $   82,295 $   62,856 $  223,814 $172,346

Cost of sales                   46,652     33,059    130,454  101,064
                            ---------- ---------- ---------- ---------

Gross profit                    35,643     29,797     93,360   71,282
                            ---------- ---------- ---------- ---------

Operating expenses:
  Research and development      11,018     10,021     31,615   29,554
  Selling, general and
   administrative

                                14,911     16,931     46,357   48,623
  Write-off of acquired in-
   process technology              700         --        700       --
  Amortization of
   intangibles                     143         45        365      179
                            ---------- ---------- ---------- ---------

    Total operating expenses    26,772     26,997     79,037   78,356
                            ---------- ---------- ---------- ---------

Income (loss) from
 operations                      8,871      2,800     14,323   (7,074)

Interest and other income,
 net                             1,296      1,319      3,266    3,522
                            ---------- ---------- ---------- ---------

Income (loss) before income
 taxes                          10,167      4,119     17,589   (3,552)

Provision for income taxes         750        103        807      482
                            ---------- ---------- ---------- ---------

Net income (loss)           $    9,417 $    4,016 $   16,782 $ (4,034)
                            ========== ========== ========== =========

Net income (loss) per share
  Basic                     $     0.12 $     0.05 $     0.21 $  (0.05)
                            ========== ========== ========== =========

  Diluted                   $     0.12 $     0.05 $     0.21 $  (0.05)
                            ========== ========== ========== =========

Shares used to compute net
 income (loss) per share:
  Basic                         80,371     74,588     79,570   74,286
                            ========== ========== ========== =========

  Diluted                       81,642     75,050     80,743   74,286
                            ========== ========== ========== =========
                            Harmonic Inc.
           Condensed Consolidated Statements of Cash Flows
                            (In thousands)
                             (Unaudited)

                                               Nine Months Ended
                                         -----------------------------
                                         September 28,  September 29,
                                              2007           2006
                                         -------------- --------------
Cash flows from operating activities:
  Net income (loss)                       $     16,782  $      (4,034)
  Adjustments to reconcile net income
   (loss) to cash provided by (used in)
   operating activities:
    Amortization of intangibles                  3,661            672
    Write-off of acquired in-process
     technology                                    700             --
    Depreciation                                 5,089          5,719
    Stock-based compensation                     4,475          4,376
    Gain (loss) on disposal and
     impairment of fixed assets                    (31)            55
Changes in assets and liabilities:
   Accounts receivable                          (4,234)        (9,314)
   Inventories                                   5,777          2,877
   Prepaid expenses and other assets               799         (8,133)
   Accounts payable                            (18,217)         3,486
   Deferred revenue                              3,714          2,474
   Income taxes payable                           (271)           366
   Accrued excess facilities costs              (5,661)           683
   Accrued and other liabilities                (3,242)           764
                                         -------------- --------------
    Net cash provided by (used in)
     operating activities                        9,341             (9)
                                         -------------- --------------

Cash flows from investing activities:
  Purchases of investments                     (70,584)       (58,061)
  Proceeds from sale of investments             71,578         71,030
  Purchase of Entone, Inc. convertible
   note                                         (2,500)            --
  Acquisition of property and equipment,
   net                                          (4,193)        (3,677)
  Acquisition of Rhozet Corporation, net
   of cash received                             (1,370)            --
  Acquisition costs related to the merger
   of Entone Technologies, Inc.                 (2,466)            --
                                         -------------- --------------
    Net cash provided by (used in)
     investing activities                       (9,535)         9,292
                                         -------------- --------------

Cash flows from financing activities:
  Repayments under bank line and term
   loan                                           (460)          (615)
  Repayments of capital lease obligations          (65)           (61)
  Proceeds from issuance of common stock,
   net                                           8,292          4,017
                                         -------------- --------------
    Net cash provided by financing
     activities                                  7,767          3,341
                                         -------------- --------------

Effect of exchange rate changes on cash
 and cash equivalents                              (34)           (38)
                                         -------------- --------------

Net increase in cash and cash equivalents        7,539         12,586
Cash and cash equivalents at beginning of
 period                                         33,454         37,818
                                         -------------- --------------

Cash and cash equivalents at end of
 period                                   $     40,993  $      50,404
                                         ============== ==============
                            Harmonic Inc.
                         Revenue Information
                            (In thousands)
                             (Unaudited)

                  Three Months Ended           Nine Months Ended
              --------------------------- ----------------------------
              September 28, September 29, September 28, September 29,
                  2007          2006          2007           2006
              ------------- ------------- ------------- --------------

Product
Video
 Processing   $ 38,623  47% $ 26,116  42% $ 92,790  41% $ 66,363   38%
Edge & Access   29,156  35%   25,143  40%   95,891  43%   77,029   45%
Software,
 Services and
 Other          14,516  18%   11,597  18%   35,133  16%   28,954   17%
              ------------- ------------- ------------- --------------
  Total       $ 82,295 100% $ 62,856 100% $223,814 100% $172,346  100%
              ========      ========      ========      ========

Geography
United States $ 44,638  54% $ 29,265  47% $125,665  56% $ 81,968   48%
International   37,657  46%   33,591  53%   98,149  44%   90,378   52%
              ------------- ------------- ------------- --------------
  Total       $ 82,295 100% $ 62,856 100% $223,814 100% $172,346  100%
              ========      ========      ========      ========

Market
Cable         $ 41,608  51% $ 39,060  62% $139,310  62% $102,500   60%
Satellite       26,462  32%    5,421   9%   43,706  20%   17,784   10%
Telco & Other   14,225  17%   18,375  29%   40,798  18%   52,062   30%
              ------------- ------------- ------------- --------------
  Total       $ 82,295 100% $ 62,856 100% $223,814 100% $172,346  100%
              ========      ========      ========      ========

Use of Non-GAAP Financial Measures

In establishing operating budgets, managing its business performance, and setting internal measurement targets, the Company excludes a number of items required by GAAP. Management believes that these accounting charges and credits, most of which are non-cash or non-recurring in nature, are not useful in managing its operations and business. Historically, the Company has also publicly presented these supplemental non-GAAP measures in order to assist the investment community to see the Company "through the eyes of management," and thereby enhance understanding of its operating performance. The non-GAAP measures presented here are gross margins, operating expense, net income (loss) and net income (loss) per share. The presentation of non-GAAP information is not intended to be considered in isolation or as a substitute for results prepared in accordance with GAAP and is not necessarily comparable to non-GAAP results published by other companies. A reconciliation of non-GAAP net income/(loss) to GAAP net income/(loss) is included with the financial statements contained in this press release. The non-GAAP adjustments described below have historically been excluded from our non-GAAP measures. These adjustments, and the basis for excluding them, are:

    --  Restructuring Activities

    --  Severance Costs

The Company has incurred severance costs in cost of sales and in operating expenses in connection with the closing of its manufacturing and research and development facilities in the UK. In addition, severance costs were incurred due to a reorganization of its senior management following the appointment of a new Chief Executive Officer. The Company excludes one-time costs of this nature in evaluating its ongoing operational performance. We believe that these costs do not reflect expected future expenses nor do they provide a meaningful comparison of current versus prior operating results.

-- Excess Facilities

The Company has incurred excess facilities charges and credits in operating expenses due to adjustments related to vacating and subleasing portions of its Sunnyvale campus and to the closing of its manufacturing and research and development facilities in the UK. The Company excludes one-time costs of this nature in evaluating its ongoing operational performance. We believe that these charges and credits do not reflect expected future expenses nor do they provide a meaningful comparison of current versus prior operating results.

-- Product Discontinuance

In connection with the restructuring of its operations in the UK, the Company recorded charges for excess inventory in connection with discontinued products. The Company excludes one-time costs of this nature in evaluating its ongoing operational performance. We believe that these costs do not reflect expected future expenses nor do they provide a meaningful comparison of current versus prior operating results.

    --  Non-Cash Items

    --  Stock-Based Compensation Expense

Harmonic has incurred stock-based compensation expense in cost of sales and operating expenses as required under FAS 123R. The Company excludes stock-based compensation expense because it believes that this measure is not relevant in evaluating its core operating performance, either for internal measurement purposes or for period-to-period comparisons and benchmarking against other public companies.

-- Amortization of Intangibles and Charge for Acquired In-Process

Technology

The Company has incurred amortization of intangibles and has taken a charge for acquired in-process technology related to acquisitions the Company has made. Management excludes these items when it evaluates its core operating performance. We believe that eliminating these expenses is useful to investors when comparing historical and prospective results and comparing such results to other public companies because these expenses will vary if and when the Company makes additional acquisitions.

                            Harmonic Inc.
            GAAP to Non-GAAP Income (Loss) Reconciliation
                             (Unaudited)

                       Three Months Ended       Three Months Ended
                        September 28, 2007       September 29, 2006
                     ------------------------ ------------------------
                     Gross  Operating  Net    Gross  Operating  Net
(In thousands)        Margin Expense  Income   Margin Expense  Income
                     ------------------------ ------------------------
GAAP                 $35,643 $26,772 $ 9,417  $29,797 $26,997 $ 4,016

Cost of sales related
 to stock based
 compensation expense    255             255      184             184
Research and
 development expense
 related to stock
 based compensation
 expense                        (563)    563             (331)    331
Selling, general and
 administrative
 expense related to
 excess facilities
 expense                       1,384  (1,384)          (2,058)  2,058
Selling, general and
 administrative
 expense related to
 stock based
 compensation expense           (870)    870             (729)    729
Amortization and
 write-off of
 intangibles from
 acquisitions          1,337    (843)  2,180      169     (45)    214
                     ------------------------ ------------------------

Non-GAAP             $37,235 $25,880 $11,901  $30,150 $23,834 $ 7,532
                     ======================== ========================

Non-GAAP income per
 share
Basic                                $  0.15                  $  0.10
                                     ========                 ========
Diluted                              $  0.15                  $  0.10
                                     ========                 ========
GAAP per share
Basic                                $  0.12                  $  0.05
                                     ========                 ========
Diluted                              $  0.12                  $  0.05
                                     ========                 ========
Shares used in per-
 share calculation -
 basic                                80,371                   74,588
                                     ========                 ========
Shares used in per-
 share calculation -
 diluted                              81,642                   75,050
                                     ========                 ========

                        Nine Months Ended        Nine Months Ended
                        September 28, 2007       September 29, 2006
                     ------------------------ ------------------------
                                                                Net
                     Gross  Operating  Net    Gross  Operating Income
                      Margin Expense  Income   Margin Expense  (Loss)
                     ------------------------ ------------------------
GAAP                 $93,360 $79,037 $16,782  $71,282 $78,356 $(4,034)

Cost of sales related
 to severance costs      188             188      300             300
Cost of sales related
 to stock based
 compensation expense    719             719      727             727
Cost of sales related
 to product
 discontinuance          772             772       --              --
Research and
 development expense
 related to severance
 costs                          (334)    334              (12)     12
Research and
 development expense
 related to stock
 based compensation
 expense                      (1,439)  1,439           (1,304)  1,304
Selling, general and
 administrative
 expense related to
 severance costs                (131)    131             (650)    650
Selling, general and
 administrative
 expense related to
 excess facilities
 expense                         813    (813)          (2,058)  2,058
Selling, general and
 administrative
 expense related to
 stock based
 compensation expense         (2,317)  2,317           (2,342)  2,342
Amortization and
 write-off of
 intangibles from
 acquisitions          3,266  (1,065)  4,331  $   493 $  (179)$   672
                     ------------------------ ------------------------

Non-GAAP             $98,305 $74,564 $26,200  $72,802 $71,811 $ 4,031
                     ======================== ========================

Non-GAAP income per
 share
Basic                                $  0.33                  $  0.05
                                     ========                 ========
Diluted                              $  0.32                  $  0.05
                                     ========                 ========
GAAP (loss) per share
Basic                                $  0.21                  $ (0.05)
                                     ========                 ========
Diluted                              $  0.21                  $ (0.05)
                                     ========                 ========
Shares used in per-
 share calculation -
 basic                                79,570                   74,286
                                     ========                 ========
Shares used in per-
 share calculation -
 diluted                              80,743                   74,726
                                     ========                 ========

    CONTACT: Harmonic Inc.
             Robin N. Dickson, Chief Financial Officer
             408-542-2500
             or
             StreetConnect
             Michael Newman, Investor Relations
             408-542-2760

    SOURCE: Harmonic Inc.