<PAGE>

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

                                   FORM 10-Q


(Mark One)

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934

     For the quarterly period ended September 30, 1999

                                       OR

[_]  TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
     OF 1934

     For the transition period from          to
                                    --------    --------


                      Commission file number  333-60575
                                             -------------

                      INTEREP NATIONAL RADIO SALES, INC.
--------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

        New York                                        13-1865151
----------------------------------------  --------------------------------------
(State or other jurisdiction of                     (I.R.S. Employer
incorporation or organization)                     Identification No.)

  100 Park Avenue, New York, New York                   10017
----------------------------------------  --------------------------------------
(Address of principal executive offices)              (Zip Code)

                                (212) 916-0700
--------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)



     Indicate by check mark whether the registrant:  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
                                                   Yes [X]     No  [_]


     As of November 4, 1999, there were 282,903 outstanding shares of the
registrant's Common Stock, $0.04 par value per share.
<PAGE>

                         PART I.  FINANCIAL INFORMATION

Item 1.   FINANCIAL STATEMENTS

                       INTEREP NATIONAL RADIO SALES, INC.

                          CONSOLIDATED BALANCE SHEETS
                   (in thousands, except share information)
<TABLE>
<CAPTION>
                                                                            September 30,   December 31,
                                                                                 1999           1998
                                                                            --------------  -------------
                                                                             (unaudited)
<S>                                                                         <C>             <C>
                                        ASSETS

Current assets:
Cash and cash equivalents....................................................    $ 15,155       $ 32,962
Receivables, less allowance for doubtful accounts of $1,106 and $1,626
 respectively................................................................      29,238         35,104
Representation contract buyouts receivable...................................       8,090         11,447
Current portion of deferred representation contract costs....................      30,856         33,742
Prepaid expenses and other current assets....................................       1,122          1,207
                                                                                 --------       --------

Total current assets.........................................................      84,461        114,462
                                                                                 --------       --------

Fixed assets, net............................................................       5,958          4,311
Deferred costs on representation contract purchases..........................      45,946         45,702
Station contract rights, net.................................................         944          1,681
Representation contract buyouts receivable...................................       4,298          6,920
Other assets.................................................................      16,468         11,432
                                                                                 --------       --------

Total assets.................................................................    $158,075       $184,508
                                                                                 ========       ========

                        LIABILITIES AND SHAREHOLDERS' DEFICIT

Current liabilities:
Accounts payable and accrued expenses........................................    $ 14,184       $ 16,640
Accrued interest.............................................................       2,500          4,972
Representation contract buyouts payable......................................      17,225         20,219
Accrued employee-related liabilities.........................................       4,836          6,520
                                                                                 --------       --------

Total current liabilities....................................................      38,745         48,351
                                                                                 --------       --------

Long-term debt...............................................................     100,000        100,000
                                                                                 --------       --------

Representation contract buyouts payable......................................      24,477         26,706
                                                                                 --------       --------

Other noncurrent liabilities.................................................       5,533         10,673
                                                                                 --------       --------

Commitments and contingencies

Shareholders' deficit:
Common stock, $.04 par value-1,000,000 shares authorized, 334,549 shares
 issued in 1999 and 1998, respectively.......................................          14             14
Additional paid-in-capital...................................................       1,163          1,163
Accumulated deficit..........................................................      (9,848)          (320)
Receivable from Employee Stock Ownership Plan................................          --            (82)
Treasury stock, at cost-51,822 and 51,671 shares, respectively...............      (2,009)        (1,997)
                                                                                 --------       --------

Total shareholders' deficit..................................................     (10,680)        (1,222)
                                                                                 --------       --------

Total liabilities and shareholders' deficit..................................    $158,075       $184,508
                                                                                 ========       ========
</TABLE>

The accompanying Notes to Unaudited Interim Consolidated Financial Statements
are an integral part of these balance sheets.

                                      -2-
<PAGE>

                       INTEREP NATIONAL RADIO SALES, INC.

                     CONSOLIDATED STATEMENTS OF OPERATIONS
                   (in thousands, except share information)
                                  (unaudited)


<TABLE>
<CAPTION>
                                                          For the                  For the
                                                       Three Months              Nine Months
                                                    Ended September 30,       Ended September 30,
                                                    -------------------       -------------------
                                                      1999      1998            1999       1998
                                                    --------  --------        ---------  --------

<S>                                                 <C>       <C>             <C>        <C>
Commission revenue............................      $27,103   $24,941         $ 68,839   $62,943
Contract termination revenue..................        2,609       713            6,351    26,679
                                                    -------   -------         --------   -------

Total revenues................................       29,712    25,654           75,190    89,622
                                                    -------   -------         --------   -------

Operating expenses:
Selling expenses..............................       20,350    18,967           51,008    46,913
General and administrative expenses...........        2,885     2,940            8,071     8,286
Depreciation and amortization expense.........        7,072     9,451           23,318    27,292
                                                    -------   -------         --------   -------

Total operating expenses......................       30,307    31,358           82,397    82,491
                                                    -------   -------         --------   -------

Operating (loss) income.......................         (595)   (5,704)          (7,207)    7,131
Interest expense, net.........................        2,546     2,206            7,358     4,447
                                                    -------   -------         --------   -------

(Loss) income before (benefit) provision for
 income taxes.................................       (3,141)   (7,910)         (14,565)    2,684
(Benefit) provision for income taxes..........         (353)   (3,480)          (5,037)      863
                                                    -------   -------         --------   -------

Net (loss) income.............................       (2,788)   (4,430)          (9,528)    1,821
                                                    -------   -------         --------   -------

Preferred stock dividend requirements and
 redemption premium...........................            -     4,101                -     5,031
                                                    -------   -------         --------   -------

Net (loss) income applicable to common
 shareholders.................................      $(2,788)  $(8,531)        $ (9,528)  $(3,210)
                                                    =======   =======         ========   =======

Basic (loss) earnings per share...............       $(9.86)  $(15.66)         $(33.70)   $(9.76)
                                                    =======   =======         ========   =======

Diluted (loss) earnings per share.............       $(9.86)  $(15.66)         $(33.70)   $(9.76)
                                                    =======   =======         ========   =======
</TABLE>

The accompanying Notes to Unaudited Interim Consolidated Financial Statements
are an integral part of these statements.

                                      -3-
<PAGE>

                       INTEREP NATIONAL RADIO SALES, INC.

                CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT
                   (in thousands, except share information)
                                  (unaudited)


<TABLE>
<CAPTION>
                                      Common Stock     Additional                                   Treasury Stock
                                     ---------------    Paid-In     Accumulated   Receivable
                                     Shares   Amount    Capital       Deficit     from ESOP        Shares    Amount
                                     -------  ------  -----------   -----------   ----------       ------    ------
<S>                                  <C>      <C>     <C>           <C>             <C>            <C>       <C>
Balance, January 1, 1999             334,549     $14     $1,163      $  (320)        $(82)         51,671    $1,997
Net loss                                  --      --         --       (9,528)          --              --        --
Treasury stock purchases                  --      --         --           --           --             151        12
Reduction of receivable from ESOP         --      --         --           --           82              --        --
                                     -------     ---     ------      -------         ----          ------    ------
Balance, September 30, 1999          334,549     $14     $1,163      $(9,848)     $   --           51,822    $2,009
                                     =======     ===     ======      =======      ===========      ======    ======
</TABLE>



The accompanying Notes to the Unaudited Interim Consolidated Financial
Statements are an integral part of these statements.

                                      -4-
<PAGE>

                       INTEREP NATIONAL RADIO SALES, INC.

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                  (unaudited)


<TABLE>
<CAPTION>
                                                                                   For the
                                                                                 Nine Months
                                                                             Ended September 30,
                                                                            ---------------------
                                                                              1999        1998
                                                                            ---------  ----------

<S>                                                                         <C>        <C>
Cash flows from operating activities:
Net (loss) income.......................................................    $ (9,528)   $  1,821
Adjustments to reconcile (loss) income to net cash provided by operating
 activities:
Depreciation and amortization...........................................      23,318      27,292
Net loss on investments.................................................          64          --
Changes in assets and liabilities-
Receivables.............................................................       5,866      (2,007)
Representation contracts buyout receivable..............................       5,979       4,697
Prepaid expenses and other current assets...............................          85        (997)
Other noncurrent assets.................................................        (202)     (4,805)
Accounts payable and accrued expenses...................................      (2,456)    (14,239)
Accrued interest........................................................      (2,472)      2,340
Accrued employee-related liabilities....................................      (1,684)     (1,055)
Other noncurrent liabilities............................................      (5,140)      2,589
                                                                            --------    --------

Net cash provided by operating activities...............................      13,830      15,636
                                                                            --------    --------

Cash flows from investing activities:
Additions to fixed assets...............................................      (2,625)       (520)
Increase in other investments...........................................      (4,678)         --
Cash paid for acquisitions..............................................      (1,000)         --
                                                                            --------    --------

Net cash used in investing activities:..................................      (8,303)       (520)
                                                                            --------    --------

Cash flows from financing activities:
Station representation contracts payments...............................     (23,404)    (24,563)
Debt repayments.........................................................           -     (61,384)
Borrowings in accordance with credit agreement..........................           -      17,250
Issuance of Senior Subordinated Notes...................................           -     100,000
Redemption of Preferred Stock & Common Stock subject to redemption......           -     (16,705)
Purchases of treasury stock.............................................         (12)        (55)
Other, net..............................................................          82         182
                                                                            --------    --------

Net cash used in financing activities...................................     (23,334)     14,725
                                                                            --------    --------

Net (decrease) increase in cash and cash equivalents....................     (17,807)     29,841
Cash and cash equivalents, beginning of period..........................      32,962       1,419
                                                                            --------    --------

Cash and cash equivalents, end of period................................    $ 15,155    $ 31,260
                                                                            ========    ========

Supplemental disclosures of cash flow information:
Cash paid during the year for:
   Interest paid........................................................    $  9,972    $  2,235
   Income taxes paid....................................................       1,191         144
Non-cash investing and financing activities:
   Station representation contracts acquired............................    $ 18,182    $ 27,763
                                                                            ========    ========
</TABLE>

The accompanying Notes to Unaudited Interim Consolidated Financial Statements
are an integral part of these statements.

                                      -5-
<PAGE>

                       INTEREP NATIONAL RADIO SALES, INC.

          NOTES TO UNAUDITED INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                    (in thousands except share information)

1.   Summary of Significant Accounting Policies

Principles of Consolidation

          The consolidated financial statements include the accounts of Interep
National Radio Sales, Inc. ("Interep"), together with its subsidiaries
(collectively, the "Company"), and have been prepared in accordance with the
rules and regulations of the Securities and Exchange Commission.  Accordingly,
certain information and footnote disclosures normally included in financial
statements prepared in accordance with generally accepted accounting principles
have been condensed or omitted.  All significant intercompany transactions and
balances have been eliminated.

          The consolidated financial statements of September 30, 1999 and 1998
are unaudited; however, in the opinion of management, such statements include
all adjustments necessary for a fair presentation of the results for the periods
presented.  The interim financial statements should be read in conjunction with
the audited financial statements and notes thereto included in the Company's
Consolidated Financial Statements for the year ended December 31, 1998, which
are available upon request of the Company.  Due to the seasonal nature of the
Company's business, the results of operations for the interim periods are not
necessarily indicative of the results that might be expected for future interim
periods or for the full year ending December 31, 1999.

Revenue Recognition

          The Company is a national representation ("rep") firm serving radio
broadcast clients throughout the United States. Commission revenue is derived
from sales of advertising time for radio stations under representation
contracts. Commissions and fees are recognized in the month the advertisement is
broadcast. In connection with its unwired network business, the Company collects
fees for unwired network radio advertising and, after deducting its commissions,
remits the fees to the respective radio stations. Since it is common practice in
the industry for rep companies not to pay a station until the corresponding
receivable is paid, and since the receivable and payable are equal, except for
the commissions, fees payable to stations have been offset against the related
receivables from advertising agencies in the accompanying consolidated balance
sheets.

Representation Contract Termination Revenue and Contract Acquisition Costs

          The Company's station representation contracts usually renew
automatically from year to year unless either party provides written notice of
termination at least twelve months prior to the next automatic renewal date. In
accordance with industry practice, in lieu of termination, an arrangement is
normally made for the purchase of such contracts by a successor representation
firm. The purchase price paid by the successor representation firm is generally
based upon the historic commission income projected over the remaining contract
period, plus two months (the "Buyout Period").

          Costs of obtaining station representation contracts are deferred and
amortized over the Buyout Period. Such amortization is included in the
accompanying consolidated statements of operations as a component of
depreciation and amortization expense. Amounts which are to be amortized during
the next year are included as current assets in the accompanying consolidated
balance sheets.  Income earned from the loss of station representation contracts
(contract termination revenue) is recognized on the effective date of the buyout
agreement.

          In addition, costs incurred as a result of commission rate reductions
are deferred and amortized over the remaining life of the existing
representation agreement. Such amortization is included in the accompanying
consolidated statements of operations as a component of depreciation and
amortization expense.

                                      -6-
<PAGE>

Earnings (Loss) Per Share

          Basic earnings (loss) per share (EPS) for each of the respective
periods have been computed by dividing the net income (loss) applicable to the
common shareholders by the weighted average number of common shares outstanding
during the period.  Basic EPS has been computed using the weighted average
shares of common stock outstanding of 282,727 and 282,878 for the three months
ended September 30, 1999 and 1998, respectively, and 282,744 and 328,926 for the
nine months ended September 30, 1999 and 1998, respectively.  Diluted EPS
reflects the potential dilution that could occur if the outstanding options to
purchase common stock were exercised.  Diluted EPS has been computed using the
weighted average shares of common stock outstanding of 282,727 and 282,878 for
the three months ended September 30, 1999 and 1998, respectively, and 282,744
and 328,926 for the nine months ended September 30, 1999 and 1998, respectively.

2.   New Accounting Pronouncements

          In June 1998, the Financial Accounting Standards Board issued
Statement of Financial Accounting Standards No. 133, "Accounting for Derivative
Instruments and Hedging Activities" ("SFAS 133").  The Statement establishes
accounting and reporting standards requiring that every derivative instrument be
recorded in the balance sheet and measured at its fair value.  This Statement
also requires that changes in the derivative's fair value be recognized
currently in earnings.  To date, the Company has not, and has no present
intention to, invest in any derivative instruments or participate in any hedging
activities.  Accordingly, the adoption of SFAS 133 will not have any effect on
the Company.

3.   Segment Disclosures

          In 1998, the Company adopted Statement of Financial Accounting
Standards No. 131, "Disclosure about Segments of an Enterprise and Related
Information".  The Statement requires the Company to report segment financial
information consistent with the presentation made to the Company's management
for decision making purposes.  The Company is managed as one segment and all
revenues are derived solely from radio representation operations and related
activities.  The Company's management decisions are based on consolidated cash
flow (defined as operating income before depreciation, amortization and
management fees), general and administrative expenses of $8,071 and $8,286 for
the nine months ended September 30, 1999 and 1998, respectively, and EBITDA
(income before interest, taxes, depreciation and amortization) of $16,111 and
$34,423 for the nine months ended June 30, 1999 and 1998, respectively.

4. Summarized Consolidating Financial Statements

          The following summarized consolidating financial statements as of
September 30, 1999 and December 31, 1998, and for the three and nine months
ended September 30, 1999 and 1998 present the financial position, the results of
operations and cash flows for the Company and the guarantor subsidiaries of the
Company, and the eliminations necessary to arrive at the information for the
Company on a consolidated basis.

          The guarantor subsidiaries are the only wholly-owned subsidiaries of
the Company, direct or indirect, and have fully and unconditionally guaranteed
the Company's 10.0% Senior Subordinated Notes (the "Notes") due 2008 on a joint
and several basis. The Company has not presented separate financial statements
and other disclosures concerning the guarantor subsidiaries of the Company
because management has determined that such information is not material to
investors.

                                      -7-
<PAGE>

<TABLE>
<CAPTION>
                           At September 30, 1999

                                                               Consolidated
                          Company   Guarantors   Elimination      Company
                          --------  -----------  ------------  -------------
<S>                       <C>       <C>          <C>           <C>

Current assets            $ 21,523    $ 62,938       $    --       $ 84,461

Noncurrent assets           50,172      28,798        (5,356)        73,614

Current liabilities         17,833      20,912            --         38,745

Noncurrent liabilities     104,219      25,791            --        130,010

                             At December 31, 1998

                                                               Consolidated
                          Company   Guarantors   Elimination      Company
                          --------  ----------   ------------  -------------

Current assets            $ 46,026    $ 68,436       $    --       $114,462

Noncurrent assets           15,266      60,136        (5,356)        70,046

Current liabilities         19,395      28,956            --         48,351

Noncurrent liabilities     108,259      29,120            --        137,379

                 For the three months ended September 30, 1999

                                                               Consolidated
                                     Company     Guarantors      Company
                                    ----------   -----------   ------------

Commission revenue                    $    505       $26,598       $ 27,103

Contract termination revenue                --         2,609          2,609

Operating (loss) income                (10,058)        9,463           (595)

Net (loss) income                      (12,349)        9,561         (2,788)

                 For the three months ended September 30, 1998

                                                               Consolidated
                                     Company     Guarantors      Company
                                    ----------   -----------   ------------

Commission revenue                    $    203       $24,738       $ 24,941

Contract termination revenue                --           713            713

Operating (loss) income                (10,844)        5,140         (5,704)

Net (loss) income                       (9,682)        5,252         (4,430)

                 For the nine months ended September 30, 1999

                                                               Consolidated
                                     Company     Guarantors      Company
                                    ----------   -----------   ------------

Commission revenue                    $    892       $67,947       $ 68,839

Contract termination revenue                --         6,351          6,351

Operating (loss) income                (26,881)       19,674         (7,207)

Net (loss) income                      (28,914)       19,386         (9,528)

                 For the nine months ended September 30, 1998

                                                               Consolidated
                                     Company     Guarantors      Company
                                    ----------   -----------   ------------

Commission revenue                    $    613       $62,330       $ 62,943

Contract termination revenue                --        26,679         26,679

Operating (loss) income                (26,787)       33,918          7,131

Net (loss) income                      (32,423)       34,244          1,821
</TABLE>

                                      -8-
<PAGE>

5. Acquisitions

          On September 30, 1999, the Company acquired substantially all of the
assets of Morrison and Abraham, Inc., a promotion and marketing consulting
service to the radio broadcasting industry, for approximately $1 million paid
upon closing and a maximum of $3 million to be paid contingent upon certain
future performance measures over the next five years.  The Company is in the
process of completing the allocation of purchase price to the net assets
acquired based on their estimated fair values.  As of September 30, 1999, the $1
million is included in Other Assets on the accompanying consolidated balance
sheet.


Item 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
          CONDITION AND RESULTS OF OPERATIONS

          The following discussion is based upon and should be read in
conjunction with the Consolidated Financial Statements, including the notes
thereto, included elsewhere in this Report.

          Certain statements contained herein, including without limitation,
statements containing the words "believes", "anticipates", "intends", "expects"
and words of similar import, constitute "forward-looking statements." Such
forward-looking statements involve known and unknown risks, uncertainties and
other factors that may cause the actual results, performance or achievements of
the Company or industry results to be materially different from any future
results, performance or achievements expressed or implied by such forward-
looking statements. Such factors include, among others, the following: general
economic and business conditions, both domestic and foreign; industry capacity;
demographic changes; existing government regulations and changes in, or the
failure to comply with, government regulations; liability and other claims
asserted against the Company; competition; the loss of any significant
customers; changes in operating strategy or development plans; the ability to
attract and retain qualified personnel; the significant indebtedness of the
Company; and other factors referenced in this Report.  Given these
uncertainties, prospective investors are cautioned not to place undue reliance
on such forward-looking statements. The Company disclaims any obligation to
update any such factors or to publicly announce the result of any revisions to
any of the forward-looking statements contained herein to reflect future events
or developments.

General

          The Company derives substantially all of its revenues from commissions
on sales of national spot radio advertising air time for the radio stations
represented by the Company. Generally, national spot advertising time is
purchased by advertising agencies or media buying services retained by
advertisers. The Company receives commissions from its client radio stations
based on the national spot radio advertising billings of the station, net of
standard advertising agency and media buying services commissions. The Company
enters into written representation contracts with its clients which include
negotiated commission rates.  Because commissions are based on the prices paid
to radio stations for spots, the Company's revenue base is regularly and
automatically adjusted for inflation.

               The Company's operating results generally depend on:

               .    increases and decreases in the size of the total national
                    spot radio advertising market;

               .    changes in the Company's share of this market;

               .    acquisitions and terminations of representation contracts;
                    and

               .    operating expense levels.

                                      -9-
<PAGE>

The effect of these factors on the Company's financial condition and results of
operations has varied from period to period.

          Total U.S. national spot radio advertising annual revenues have grown
from an estimated $1.15 billion to an estimated $1.98 billion during the five
years ended December 31, 1998. The performance of the national spot radio
advertising market is influenced by a number of factors, including, but not
limited to, general economic conditions, consumer attitudes and spending
patterns, the share of total advertising spent on radio and the share of total
radio advertising represented by national spot radio.

          The Company's share of the national spot advertising market changes as
a result of increases and decreases in the amount of national spot advertising
broadcast on the Company's clients. Moreover, the Company's market share
increases as it acquires representation contracts with new client stations and
decreases if current client representation contracts are terminated. Thus, the
Company's ability to attract new clients and to retain existing clients
significantly affects its market share.

          The value of representation contracts which have been acquired or
terminated during the last few years has tended to increase due to a number of
factors, including the consolidation of ownership in the radio broadcast
industry following the passage of the Telecommunications Act of 1996. In recent
years, the Company has increased its representation contract acquisition
activity, and the Company has devoted a significant amount of its resources to
these acquisitions.  At the same time, the Company has received an increased
amount of contact termination revenue.  The Company bases its decisions to
acquire a representation contract on the market share opportunity presented and
an analysis of the costs and net benefits to be derived. The Company
continuously seeks opportunities to acquire additional representation contracts
on attractive terms, while maintaining its current clients. The Company's
ability to acquire and maintain representation contracts has had, and will
continue to have, a significant impact on its revenues and cash flows.

          Following industry practice, the Company generally acts as the
exclusive national rep firm for each of its client radio stations under a
written contract. If a station terminates its contract prior to the scheduled
termination date, the station is typically obligated to pay the Company, as
required by the contract or in accordance with industry practice.  This amount
is approximately equal to the commissions the Company would have earned during
the unexpired term of the canceled contract, plus an additional two months of
"spill over" commissions.  "Spill-over" commissions are those earned on
advertising placed or committed to prior to the contract termination but
broadcast later.  In practice, a successor rep firm enters a new contract with
the station and assumes the obligation to make the termination payments. These
payments are usually made in equal monthly installments over a period of one-
half the number of months remaining under the terminated contract.  To
illustrate, assume a station terminates a representation contract with a
competing rep firm and that contract has a remaining unexpired term of 12
months.  If the Company acquires the representation contract, its payment
obligation to the competing rep firm would be 14 months of commissions payable
in seven equal monthly installments. However, certain contracts representing
material revenues permit clients in certain circumstances to terminate their
agreements with less than 12-months' notice and pay termination and evergreen
payments over shorter periods of time.

          The Company recognizes revenues on a contract termination as of the
effective date of the termination. When a contract is terminated, the Company
writes off in full the unamortized portion, if any, of the expense originally
incurred on acquisition of the contract.  When the Company enters into a
representation contract with a new client, it amortizes the contract acquisition
cost in equal monthly installments over the life of the new contract.  As a
result, the Company's operating income is affected, negatively or positively, by
the acquisition or loss of client stations.

          The Company is unable to forecast any trends in contract buyout
activity, or in the amount of revenues or expenses that will likely be
associated with buyouts during a particular period. Generally, the amount of
revenue resulting from the buyout of a representation contract depends on the
length of the remaining term of the contract and the revenue generated under the
contract during the 12 month "trailing period" preceding the date of
termination. The amount recognized by the Company as contract termination
revenue in any period is not, however, indicative of contract termination
revenue that may be realized in any future period.  Historically, the level of
buyout activity has varied from period to period.  Additionally, the length of
the remaining terms, and the commission revenue generation, of the contracts
which are terminated in any period vary to a considerable extent. Accordingly,
while buyout activity and the size of buyout payments has increased since 1996,
their impact on the Company's revenues and income is expected to be uncertain,
due to the variables of contract length and commission generation.

                                      -10-
<PAGE>

          While the commission revenues generated under a representation
contract during a trailing period is used in calculating the buyout amount the
Company pays to acquire that contract, it should not be relied on as an
indicator of the future commission revenues the Company will generate under that
contract.  The Company's revenues will depend on a number of factors, including
the amount of national spot advertising broadcast by the station involved. This,
in turn, will be affected by factors such as general and local economic
conditions, consumer attitudes and spending patterns, the share of total
advertising spent on radio and the share of total radio advertising represented
by national spot radio.

          During 1999, the Company entered the Internet advertising business.
Revenues and expenses from this business will be affected by the level of
advertising on the Internet generally, the prices obtained for advertising on
the Internet and the Company's ability to obtain contracts from high-traffic
Internet websites and from Internet advertisers.

          The Company's selling and corporate expense levels are dependent on
management decisions regarding operating and staffing levels and on inflation.
Selling expenses represent all costs associated with the Company's marketing,
sales and sales support functions. Corporate expenses include items such as
corporate management, corporate communications, financial services, advertising
and promotion expenses, Internet advertising development expenses and employee
benefit plan contributions.

          The Company's business normally follows the pattern of advertising
expenditures in general.  It is seasonal to the extent that radio advertising
spending increases during the fourth calendar quarter in connection with the
Christmas season and tends to be weaker during the first calendar quarter. Radio
advertising also generally increases during the second and third quarters due to
holiday-related advertising, school vacations and back-to-school sales.
Additionally, radio tends to experience increases in the amount of advertising
revenues as a result of special events such as presidential election campaigns.
Furthermore, the level of advertising revenues of radio stations, and therefore
the Company's level of revenues, is susceptible to prevailing general and local
economic conditions and the corresponding increases or decreases in the budgets
of advertisers, as well as market conditions and trends affecting advertising
expenditures in specific industries.

Results of Operations

Three Months Ended September 30, 1999 Compared to Three Months Ended September
30, 1998

          Commission Revenue.   Commission revenue in the third quarter of 1999
increased to $27.1 million, or 8.7%, from $24.9 million in the comparable 1998
quarter. This increase was primarily attributable to a general increase in
national spot advertising on client stations, as well as the fact that
commissions from new representation contracts, primarily the ABC and Cumulus
radio stations, exceeded the loss of commission revenues from terminated
contracts, primarily Nationwide Communications. The Company's new Internet
advertising business had revenues of $369,000 during the quarter ended September
30, 1999.

          Contract Termination Revenue.  Contract termination revenue increased
265.9%, to $2.6 million, during the third quarter of 1999, as compared to $0.7
million in the comparable 1998 period, an increase of $1.9 million. This
increase resulted from the higher contract values of stations lost during the
current period as compared to the prior period.

          Selling Expenses.  Selling expenses for the third quarter of 1999
increased to $20.4 million from $19.0 million during the comparable 1998 period.
This increase of $1.4 million, or approximately 7.3%, was primarily due to
employee compensation increases associated with the growth in commission
revenues. Costs relating to the Company's entry into the Internet advertising
business were $1.0 million during the third quarter of 1999.

          General and Administrative Expenses. General and administrative
expenses declined $55,000 to $2.9 million for the third quarter of 1999. This
reduction was primarily the result of lower cost levels achieved through the
relocation of the Company's accounting and finance functions to Florida in 1997.

          Depreciation and Amortization.  Depreciation and amortization declined
by $2.4 million in the third quarter of 1999, to $7.1 million, from $9.5 million
in the comparable 1998 period.  The amortization of costs associated with

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acquiring representation contracts is included in depreciation and amortization.
This decrease of approximately 25.2% was due primarily to the completion of the
amortization of certain representation contracts.

          Operating (Loss) Income.  Operating loss decreased by $5.1 million, or
89.6%, for the third quarter of 1999, compared with the third quarter of 1998,
as a result of improved performance and lower amortization.

          Interest Expense, Net.  Interest expense, net increased approximately
$0.3 million, or approximately 15.4%, to $2.5 million for the third quarter of
1999, compared to $2.2 million for the third quarter of 1998.  This increase
primarily resulted from interest charges associated with the Company's issuance
of its Senior Subordinated Notes in July 1998.

          Provision (Benefit) for Income Taxes.  The benefit for income taxes
declined by approximately $3.1 million, to $0.4 million, for the quarter ended
September 30, 1999, compared to $3.5 million for the third quarter of 1998. This
decrease is a direct result of the reduction in loss before taxes.

          Net Income (Loss).  The Company's net loss of approximately $2.8
million for the third quarter of 1999, a $1.6 million reduction from the $4.4
million net loss for the comparable period in 1998, is attributable to the
factors discussed above.

Nine Months Ended September 30, 1999 Compared to Nine Months Ended September 30,
1998

          Commission Revenue.   Commission revenue in the first nine months of
1999 increased to $68.8 million, or 9.4%, from $62.9 million in the comparable
1998 period.  This $5.9 million increase was primarily attributable to the fact
that commissions from new representation contracts, primarily the ABC radio
stations, exceeded the loss of commission revenues from terminated contracts,
primarily Nationwide Communications, as well as a general increase in national
spot advertising on client stations. The Company's new Internet advertising
business had revenues of $406,000 during the nine-month period ended September
30, 1999.

          Contract Termination Revenue.  Contract termination revenue in the
first nine months of 1999 decreased to $6.4 million, or 76.2%, from $26.7
million in the comparable 1998 period, a decrease of $20.3 million.  This
decrease was primarily attributable to the fact that a substantial amount of
contract termination revenue was generated in the first quarter of 1998 as a
result of the termination of the Company's representation contracts with
stations owned by SFX Broadcasting, when it was acquired by an affiliate of the
Company's principal competitor. The loss of representation contracts during the
first nine months of 1999 was not as significant.  The value of representation
contracts acquired or terminated during the last few years has generally tended
to increase due to the factors discussed above.

          Selling Expenses.  Selling expenses for the first nine months of 1999
increased to $51.0 million from $46.9 million during the comparable 1998 period.
This increase of $4.1 million, or approximately 8.7%, was primarily due to
employee compensation increases associated with the growth in commission
revenues. Costs relating to the Company's entry into the Internet advertising
business were $1.4 million during the nine-month period ended September 30,
1999.

          General and Administrative Expenses. General and administrative
 expenses declined $0.2 million to $8.1 million for the first nine months of
 1999, from $8.3 million in the comparable 1998 period. This reduction was
 primarily the result of the lower cost levels achieved through the relocation
 of the Company's accounting and finance functions to Florida in 1997.

          Depreciation and Amortization.  Depreciation and amortization
decreased to $23.3 million, or 14.6%, for the first nine months of 1999, from
$27.3 million in the comparable 1998 period. The amortization of costs
associated with acquiring representation contracts is included in depreciation
and amortization. This decrease of $4.0 million was primarily due to the
completion of the amortization of certain representation contracts.

          Operating Income (Loss).  Operating income decreased by $14.3 million,
or 201.1%, to a loss of $7.2 million for the first nine months of 1999 compared
with operating income of $7.1 million in the comparable 1998 period. This
decline was primarily due to the decrease in contract termination revenues
discussed above.

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          Interest Expense, Net.  Interest expense, net increased 65.5% to $7.4
million for the first nine months of 1999, from $4.4 million for the comparable
1998 period.  This increase of approximately $2.9 million primarily resulted
from interest charges associated with the issuance of the Company's Senior
Subordinated Notes in July 1998.

          Provision (Benefit) for Income Taxes.  The provision for income taxes
decreased by $5.9 million to $(5.0) million for the first nine months of 1999
compared to $900,000 for the comparable 1998 period, primarily as a result of
the decrease in contract termination revenues in 1999 discussed above.

          Net (Loss) Income.  The Company's net loss of approximately $9.5
million for the first nine months of 1999, a $11.3 million decrease from the
$1.8 million net income for the comparable 1998 period, was primarily due to the
reduction in contract termination revenues discussed above.

Liquidity and Capital Resources

          The Company's cash requirements have been primarily funded by cash
provided from operations and financing transactions.  Cash provided by
operations during the first nine months of 1999 amounted to $13.8 million, as
compared to $29.4 million, $23.8 million and $36.0 million for the years ended
1998, 1997 and 1996, respectively.  These fluctuations were primarily
attributable to changes in receivables pertaining to representation contract
buyouts.

          Net cash used in investing activities is primarily attributable to
capital expenditures and investments in private companies.  Capital expenditures
of $2.6 million, $1.3 million, $800,000 and $1.0 million for the nine months
ended September 30, 1999 and the years ended 1998, 1997 and 1996, respectively,
were primarily for computer equipment and software upgrades.  Investments in
private companies amounted to $4.7 million for the nine months ended September
30, 1999, and consisted of significant minority equity positions in three
Internet advertising firms. Additionally, during such period the Company
acquired a radio promotion and marketing consulting business for an initial
payment of $1.0 million plus an earn-out payment of up to $3.0 million over the
next five years.

          Overall cash used in financing activities of $23.3 million during the
first nine months of 1999 was primarily used for acquisitions of representation
contracts.  Cash provided by (used in) financing activities during the years
ended December 31, 1998, 1997 and 1996 was $3.4 million, $(24.3) million and
$(34.1) million, respectively.  The cash provided by financing activities in
1998 resulted from the issuance of the Senior Subordinated Notes described
below, offset by acquisitions of station representation contracts.  Cash used in
financing activities in 1997 and 1996 was primarily used for acquisitions of
representation contracts and debt repayments, offset by increased borrowings.

          In general, as the Company acquires new representation contracts, it
uses more cash and, as contracts are terminated, receives additional cash.  For
the reasons noted above, the Company is not able to predict the amount of cash
it will require for contract acquisitions, or the cash it will receive on
contract terminations, from period to period.

          In July 1998 the Company issued 10% Senior Subordinated Notes in the
principal amount of $100.0 million due July 1, 2008.  Interest on the Senior
Subordinated Notes is payable in semi-annual payments of $5.0 million. The
Senior Subordinated Notes, while guaranteed by the Company's subsidiaries, are
unsecured and are junior in right of payment to any amounts outstanding under
the revolving credit agreement described below, as well as to certain other
indebtedness.  The Company used a portion of the net proceeds from the issuance
of the Senior Subordinated Notes to repay the then outstanding balance of our
bank debt.  Additionally, the Company redeemed all of the outstanding shares of
its Series A preferred stock and Series B preferred stock, together with all of
the associated shares of common stock then subject to redemption.

          The Company issued the Senior Subordinated Notes under an indenture
that limits its ability to engage in various activities.  Among other things:

               .    the Company is generally not able to pay any dividends to
                    its stockholders, other than dividends payable in shares of
                    common stock;

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<PAGE>

               .    the Company can only incur additional indebtedness under
                    limited circumstances; and

               .    certain types of mergers, asset sales and changes of control
                    either are not permitted or permit the note holders to
                    demand immediate redemption of their Senior Subordinated
                    Notes.

          The Senior Subordinated Notes may not be redeemed by the Company prior
to July 1, 2003, except that it may redeem up to 30% of the Senior Subordinated
Notes with the proceeds of equity offerings such as the initial public offering
currently anticipated by the Company to occur in the fourth quarter of 1999. If
certain events occurred which would be deemed to involve a change of control
under the indenture, the Company would be required to offer to repurchase all of
the Senior Subordinated Notes at a price equal to 101% of their aggregate
principal, plus unpaid interest.

          In July 1998 the Company also entered into an agreement with two banks
to provide it with a $10.0 million revolving credit facility.  Although the
Company does not owe any amounts under that agreement, it imposes a number of
constraints on the Company's operations.  In addition to covenants similar to
those in the indenture governing the Senior Subordinated Notes, the revolving
credit agreement requires that the Company maintain:

               .    a maximum leverage ratio not to exceed 5.25 to 1.0;

               .    a maximum senior debt leverage ratio not to exceed 2.0 to
                    1.0;

               .    a minimum interest coverage ratio of not less than 1.6 to
                    1.0; and

               .    a minimum fixed charge coverage ratio of not less than 1.1
                    to 1.0.

          The Company believes that the liquidity resulting from the
transactions described above, together with anticipated cash from continuing
operations, should be sufficient to fund its operations and anticipated needs
for required representation contract acquisition payments, and to make required
payments of principal and interest under its revolving credit facility and 10.0%
annual interest payments on the Senior Subordinated Notes, for at least the next
12 months. The Company may not, however, generate sufficient cash flow for these
purposes or to repay the notes at maturity.  The Company's ability to fund its
operations and required contract acquisition payments and to make scheduled
principal and interest payments will depend on its future performance, which, to
a certain extent, is subject to general economic, financial, competitive,
legislative, regulatory and other factors that are beyond its control.  The
Company may also need to refinance all or a portion of the notes on or prior to
maturity. There can be no assurance that the Company will be able to effect any
such refinancing on commercially reasonable terms, if at all.

Year 2000 Assessment

          Many computer systems experience problems handling dates beyond the
year 1999. Therefore, some computer hardware and software will need to be
modified prior to the year 2000 in order to remain functional. During 1998, the
Company completed an assessment of its internal readiness to implement Year 2000
compliant systems on a timely basis. The Company currently utilizes software
systems for its accounting, billing and database management functions, among
others, which were developed by third parties or the Company, using third-party
software development tools. These third parties have advised the Company that
such systems are Year 2000 compliant or, in some cases, will be made Year 2000
compliant through the installation of software patches or upgrades. The Company
completed the programming changes needed to make its systems Year 2000 compliant
during the first quarter of 1999 and does not believe that the related cost will
have a material adverse effect on the Company's revenues. The Company estimates
that its Year 2000 expenditures during 1999 will be $250,000.  There can be no
assurance, however, that there will not be a delay in, or increased costs
associated with, the implementation of Year 2000 changes. The Company's
inability to implement such changes could have a material adverse effect on the
Company's revenues.

                                      -14-
<PAGE>

          The Company has not completed its assessment of the Year 2000
compliance of its clients, nor of the possible consequences of the failure of
one or more of its clients to become Year 2000 compliant on a timely basis.  It
is possible that if a substantial number of the Company's clients failed to
implement Year 2000 compliant billing or payment systems, for example, their
payments to the Company of commissions on the sale of radio advertising time
might be disrupted, which would adversely affect its cash flow. The Company will
continue to discuss these matters with its key clients during 1999 to attempt to
ascertain whether and to what extent such problems are likely to occur.  It is
not clear, however, what measures, if any, the Company could take to handle such
eventualities while still maintaining client relationships.  The Company has
been advised by its principal suppliers of data base information services and
payroll services that those services will be Year 2000 compliant on a timely
basis.  The Company does not believe that it has other relationships with
vendors or suppliers which, if disrupted due to the failure of such vendors and
suppliers to deal adequately with their own Year 2000 compliance issues, would
have a material adverse effect on the Company's business.


Item 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

          The Company is exposed to market risk from changes in interest rates
that may adversely affect its results of operations and financial condition. The
Company seeks to minimize the risks from these interest rate fluctuations
through its regular operating and financing activities.  The Company's policy is
not to use financial instruments for trading or other speculative purposes. The
Company is not currently a party to any financial instruments.


                          PART II.  OTHER INFORMATION


Item 6.   EXHIBITS AND REPORTS ON FORM 8-K

     (a) Exhibits.  The Exhibits filed with this Report are listed on the
Exhibit Index immediately following the signature page.

     (b) Reports on Form 8-K.  No Reports on Form 8-K were filed during the
three months ended September 30, 1999.

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                                   SIGNATURES

          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 thereunto duly authorized.

                              INTEREP NATIONAL RADIO SALES, INC.


November 8, 1999              By         WILLIAM J. McENTEE, JR.
                                ------------------------------------------
                                         William J. McEntee, Jr.
                                         Vice President and
                                         Chief Financial Officer

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                                 EXHIBIT INDEX


    27.1        Financial Data Schedule