YURIE SYSTEMS INC
10-K/A, 1998-05-13
COMMUNICATIONS EQUIPMENT, NEC
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<PAGE>   1

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              The information required by this Item UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  FORM 10-K/A

[X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
     EXCHANGE ACT OF 1934 FOR YEAR ENDED DECEMBER 31, 1997
                                       OR
[ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
                            ------------------------
                        Commission File Number: 0-22087

                              YURIE SYSTEMS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                                                  <C>
           DELAWARE                                                        52-1778987
 (State or other jurisdiction of                                        (I.R.S. Employer
incorporation or organization)                                      Identification Number)
   8301 PROFESSIONAL PLACE
         LANDOVER, MD                                                        20785
(Address of principal office)                                              (zip code)



      (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE): (301) 352-4600
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
 
                                      NONE

          SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
                            ------------------------
                                                                     NAME OF EACH EXCHANGE
     TITLE OF EACH CLASS                                              ON WHICH REGISTERED
- ------------------------------                                       ----------------------
                                                                        THE Nasdaq STOCK
 COMMON STOCK, PAR VALUE $.01                                           MARKET (NATIONAL
          PER SHARE                                                         MARKET)
</TABLE>

     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


     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.
          ---------


     The aggregate market value of the common stock of Yurie Systems, Inc. held
by non-affiliates as of March 31, 1998 based on the last reported sale price for
the registrant's common stock, as reported on the Nasdaq National Market, was
132,744,427. Shares of common stock held by each executive officer and director
and by each person who owns 5% or more of the outstanding common stock, based on
Schedule 13G filings, have been excluded since such persons may be deemed
affiliates. This determination of affiliate status is not necessarily a
conclusive determination of other purposes. As of April 24, 1998, the registrant
had outstanding 25,520,763 shares of its common stock.
================================================================================
<PAGE>   2
 
     The undersigned registrant hereby Amends its Annual Report on Form 10-K 
as set forth in the pages attached hereto:
 
                                     PART I

     The following information hereby supplements and amends Part I:
 
ITEM I.
 
     On April 27, 1998, Yurie Systems, Inc. ("Yurie" or "Company") entered into
a merger agreement with Lucent Technologies Inc., a Delaware corporation
("Lucent" or "Parent") and its wholly owned subsidiary, Reindeer Acquisition,
Inc., a Delaware corporation ("Purchaser"), that provides for the acquisition of
all of the common stock, par value $.01 per share (the "Shares" or "Common
Stock"), of Yurie by Purchaser at a price of $35 per Share in cash, net to the
seller, without interest. Under the terms of the proposed transaction, Purchaser
has commenced a tender offer (the "Tender Offer") for all outstanding shares of
Yurie Common Stock at $35 per Share. The Tender Offer is currently scheduled to
expire at 12:00 Midnight, New York City time, on May 28, 1998.
 
     Following the successful completion of the Tender Offer, upon approval by
stockholder vote, if required, Purchaser will be merged with and into Yurie (the
"Merger"), and all Shares not purchased in the Tender Offer will be converted
into the right to receive $35 per Share in cash, net to the seller, without
interest.
                                ---------------
 
                                    PART III

     The following information hereby supplements and amends Part III:
 
 
ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT


     The following sets forth certain information as of the date hereof with
respect to the Company's directors.  The agreement and plan of merger entered
into by the Company, the Purchaser, and Lucent on April 27, 1998 (the "Merger
Agreement") provides that promptly upon the acceptance for payment of, and
payment for, Shares by the Purchaser pursuant to the Offer, the Purchaser will
be entitled to designate such number of directors on the Board of Directors of
the Company (the "Purchaser Designees") as will give the Purchaser, subject to
compliance with Section 14(f) of the Exchange Act, representation on the
Company's Board of Directors equal to the product of (1) the total number of
directors on the Company's Board of Directors and (2) the percentage that the
number of Shares purchased by Purchaser in the Offer bears to the number of
Shares outstanding, and the Company will, at such time, cause the Purchaser
Designees to be so elected by its existing Board of Directors. Subject to
applicable law, the Company has agreed to take all action requested by the
Purchaser necessary to effect any such election, including mailing to its
stockholders an information statement. The Merger Agreement provides
that in the event that the Purchaser Designees are elected to the Board of
Directors of the Company, until the effective time of the Merger the Board of
Directors of the Company will have at least two directors who are directors on
the date of Merger Agreement and who are not officers of the Company or any of
its subsidiaries (the "Independent Directors") and; provided further, that in
such event if the number of Independent Directors shall be reduced below two for
any reason whatsoever, the remaining Independent Director shall designate a
person to fill such vacancy who shall be deemed to be an Independent Director
for purposes of the Merger Agreement, or if no Independent Directors then
remain, the other directors of the Company on the date of the Merger Agreement
shall designate two persons to fill such vacancies who shall not be officers or
affiliates of the Company and its subsidiaries or of Parent or any of its
subsidiaries and such persons shall be deemed to be Independent Directors for
purposes of the Merger Agreement. The Merger Agreement also provides that the
Company will promptly, at the option of the Purchaser, either increase the size
of the Company's Board of Directors and/or obtain the resignation of such
number of its current directors as is necessary to enable the Purchaser
Designees to be elected or appointed to, and constitute a majority of the
Company's Board of Directors as provided above. Biographical information
concerning the Company's current directors and executive officers as of April
30, 1998, is as follows:

<TABLE>
<CAPTION>
                                                                  SERVED AS
                                                                   DIRECTOR     TERM AS DIRECTOR
                                       POSITIONS OR OFFICES      CONTINUOUSLY    EXPIRES AT THE
              NAME                       WITH THE COMPANY           SINCE       ANNUAL MEETING IN   AGE
              ----                     --------------------      ------------   -----------------   ---
<S>                                <C>                           <C>            <C>                 <C>
Dr. Jeong H. Kim.................  Chief Executive Officer,          1992             2000          37
                                   Chairman of the Board of
                                   Directors
Harry J. Carr....................  President                         1997             1998          41
                                   Chief Operating Officer,
                                   Director
Kwok L. Li.......................  Chief Technology Officer,         1995             1998          40
                                   Vice Chairman of the Board
                                   of Directors
Barton Y. Shigemura..............  Senior Vice President,            1996             1999          38
                                   Sales and Marketing,
                                   Director
Kenneth D. Brody.................  Director                          1996             1999          54
Dr. William J. Perry.............  Director                          1997             1999          70
R. James Woolsey.................  Director                          1996             1998          56
Dr. Herbert Rabin................  Director                          1995             2000          69
</TABLE>
<PAGE>   3
 
     The following are brief summaries of the business experience during at
least the past five years of each of the directors of the Company.
 
     Dr. Jeong H. Kim is the founder of the Company and has served as Chief
Executive Officer and Chairman of the Board of Directors of the Company since
October 1995; Chief Executive Officer and Director since the Company's inception
in February 1992; and President from its inception until March 1996. From 1990
to 1993, Dr. Kim served as Senior Project Engineer with Allied-Signal Technical
Services Corporation, a subsidiary of Allied-Signal Inc. Previously, he served
as an Engineering Consultant with SFA, Inc., a U.S. Department of Defense
contractor and as a Nuclear Submarine Officer in the U.S. Navy. Dr. Kim holds a
Ph.D. in Reliability Engineering from the University of Maryland, and an M.S. in
Technical Management and a B.E.S. in Electrical Engineering and Computer Science
from The Johns Hopkins University.
 
     Kwok L. Li is the Company's Chief Technology Officer and Vice Chairman of
the Board of Directors. Prior to holding these positions, Mr. Li served as
President and Chief Operating Officer from March 1996 to June 1997, and as
Executive Vice President and Chief Technical Officer of the Company from August
1994 through March 1996. Mr. Li has been a Director of the Company since 1995.
Mr. Li was employed by the Company on a part-time basis from its inception in
1992 through August 1994. From 1991 to 1994, Mr. Li was Director of Strategic
Planning at WilTel, Inc., an interexchange carrier, and from 1988 to 1991, he
was Manager of Fiber Access Systems Development for Bell Northern Research,
Inc., a subsidiary conducting technological research and development for
Northern Telecom Limited. In addition to his executive positions at the Company,
Mr. Li serves as Chairman of the Board of Directors of Splitrock Services, Inc.
("Splitrock"), a Texas corporation that provides communications services
specifically configured to meet the needs of large network users, and in that
capacity is responsible for the strategic initiatives of Splitrock and devotes a
significant amount of his time to Splitrock. He is also the majority and
controlling member-owner of Linsang Partners LLC. Mr. Li and Linsang Partners
LLC are the majority shareholders of Splitrock. Mr. Li holds a B.E.S. in
Electrical Engineering from The Johns Hopkins University.
 
     Harry J. Carr joined the Company in June 1997 as its President, Chief
Operating Officer and a Director. Prior to joining the Company, he spent five
years in various executive positions with AT&T, including Market Development
Vice President for the Atlantic States region, National Program Manager at AT&T
Local Services, and Vice President at AT&T's Defense Markets Division. From 1989
to 1992, Mr. Carr practiced law, most recently as a partner at Veneble, Baetjar,
Howard & Civiletti. Prior to that, he was employed by AT&T for over 11 years,
holding a variety of positions in finance, marketing, operations and law. Mr.
Carr holds a B.S. in Finance from Fairfield University and a J.D. from the
University of Connecticut Law School.
 
     Barton Y. Shigemura joined the Company in May 1996 as its Senior Vice
President of Sales and Marketing and a Director. From 1993 to 1996, Mr.
Shigemura was Vice President, Marketing & Services and an executive officer of
Premisys Communications, Inc., a manufacturer of integrated access products for
telecommunications service providers, and from 1990 to 1993, he was Director,
Product Line Management for Northern Telecom Limited, a telecommunications
equipment manufacturer. Prior to that, he served as an Area Vice President,
Sales for General DataComm Industries, Inc., a provider of wide area network and
telecommunications products. Mr. Shigemura holds a B.S. in Marketing and Finance
from the University of Southern California.
 
     Kenneth D. Brody has served as a Director of the Company since June 1996.
Mr. Brody is the founding partner of Winslow Partners LLC, a private equity
investment firm in Washington, D.C. From 1993 to early 1996, Mr. Brody served as
President and Chairman of the Export-Import Bank of the United States. Prior to
that, he was a Partner at Goldman, Sachs & Co., where he served as a member of
the firm's Management Committee and founded and headed the high technology
investment banking group. Mr. Brody also serves as a Director of Quest
Diagnostics Incorporated and Federal Realty Investment Trust. Mr. Brody holds an
M.B.A. from the Harvard Business School and a B.S. in Electrical Engineering
from the University of Maryland.
 
     Dr. William J. Perry has served as a Director of the Company since January
1997. Since March 1997, Dr. Perry has been a professor at the School of
Engineering at Stanford University, where he also had been a professor from 1989
to 1993, and had served as the Chairman of Technology Strategies Alliances and
as a Co-
                                        2
<PAGE>   4
 
Director of Stanford's Center for International Security and Arms Control. Dr.
Perry served as the U.S. Secretary of Defense from 1994 to 1997, and as the
Deputy Secretary of Defense from 1993 to 1994. Dr. Perry also serves as a
Director of Hambrecht & Quist LLC, United Technologies Corporation and
Evolutionary Technologies International Inc. Dr. Perry holds a Ph.D. in
Mathematics from Penn State University and an M.S. and B.S. in Mathematics from
Stanford University.
 
     R. James Woolsey has served as a Director of the Company since April 1996.
Mr. Woolsey practices law at the law firm of Shea & Gardner in Washington, D.C.,
where he has been a partner since 1979, with the exception of the periods from
1989-1991, when he served as Ambassador and Negotiator for the Conventional
Armed Forces in Europe Treaty (CFE), and 1993-1995, when he served the United
States as the Director of Central Intelligence. Shea & Gardner is one of several
law firms that provides legal services to the Company. Mr. Woolsey also serves
as a Director of Sun Healthcare Group, Inc. Mr. Woolsey holds an L.L.B. from
Yale Law School, an M.A. from Oxford University and a B.A. from Stanford
University.
 
     Dr. Herbert Rabin has served as a Director of the Company since 1995. Dr.
Rabin is Director of the Engineering Research Center and Associate Dean of the
College of Engineering at the University of Maryland, where he has been
Professor of Electrical Engineering since 1983. He was Deputy Assistant
Secretary of the Navy (Research Applied and Space Technology) Research
Laboratory from 1979 through 1983 and Associate Director of Research at the
Naval Research Laboratory from 1971 to 1979. He currently serves as a Director
of General Research Corporation International and a member of the Board of
Trustees of the National Technological University. Dr. Rabin holds a Ph.D., an
M.S. and a B.S. in Physics from the University of Maryland, the University of
Illinois, and the University of Wisconsin, respectively.
 
     THE FOLLOWING IS A BIOGRAPHICAL SUMMARY OF THE EXPERIENCE OF THE EXECUTIVE
OFFICERS (OTHER THAN THOSE OFFICERS WHO ARE SERVING AS DIRECTORS) OF THE
COMPANY:
 
     Harry J. D'Andrea, age 41, joined the Company in June 1997 as its Chief
Financial Officer and Treasurer. During 1996, he served as Chief Financial
Officer for American Communications Services, Inc., a company specializing in
fiber optic network development and local telecommunications services. From 1993
to 1995, he was employed by Caterair International Corporation, an in-flight
catering company, as its Executive Vice President, Chief Financial Officer and
Treasurer, and from 1989 to 1993, as its Vice President of Finance and
Treasurer. Prior to joining Caterair, he held various financial positions with
Marriott Corporation and Xerox Corporation. Mr. D'Andrea holds an M.B.A. from
Drexel University and a B.A. in Foreign Service from the Pennsylvania State
University.
 
     John J. McDonnell, age 51, joined the Company in June 1996 on a part-time
basis as its General Counsel and Secretary. He also serves as Chief Executive
Officer of Coagulation Diagnostics, Inc., a medical diagnostics device company
founded in 1995. From 1990 to 1995, he was counsel with Reed Smith Shaw &
McClay, a law firm. He previously served as Executive Vice President and General
Counsel for Fairchild Space and Defense Corporation, Senior Vice President and
General Counsel for Fairchild Industries, Inc., and Principal Deputy General
Counsel of the Department of the Navy. Mr. McDonnell serves on the Board of
Directors of Geraghty and Miller, Inc., an environmental engineering firm, PHP
Healthcare Corporation and Sequoia National Bank. Mr. McDonnell holds an A.B.
from Boston College and a J.D. from Fordham Law School.
 
     All officers serve at the discretion of the Board of Directors. There are
no family relationships between directors or executive officers of the Company.
 
SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
 
     Section 16(a) of the Exchange Act requires the Company's directors and
executive officers and holders of more than 10% of the Company's Shares to file
with the Commission reports of ownership and changes in ownership of Common
Stock and other equity securities of the Company on Forms 3, 4, and 5. Dr. Kim
and Mr. Li each filed a Form 4 for the month of February 1997, reflecting the
sale of Shares in connection with the underwriters' exercise of their
overallotment option. These forms, which reflect one transaction each, were
filed four days late. Mr. Shigemura also filed a Form 4 late for the month of
February 1997, reflecting four purchases of Shares.
 
                                        3
<PAGE>   5
 
ITEM 11.  EXECUTIVE COMPENSATION
 
Summary Compensation Table.  The following table sets forth information
concerning the compensation of the Chief Executive Officer and the four most
highly paid executive officers of the Company other than the Chief Executive
Officer who were serving as executive officers at December 31, 1997 (the "named
executive officers"), for each of the fiscal years ended December 31, 1997, 1996
and 1995.
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                           LONG-TERM COMPENSATION
                                         ANNUAL COMPENSATION              -------------------------
                              -----------------------------------------                  SECURITIES
                                                           OTHER ANNUAL    RESTRICTED    UNDERLYING    ALL OTHER
NAME AND PRINCIPAL POSITIONS  YEAR    SALARY     BONUS     COMPENSATION   STOCK AWARDS    OPTIONS     COMPENSATION
- ----------------------------  ----   --------   --------   ------------   ------------   ----------   ------------
<S>                           <C>    <C>        <C>        <C>            <C>            <C>          <C>
Jeong H. Kim(1).............  1997   $200,010         --     $13,666(2)           --            --           --
  Chief Executive Officer     1996    200,000         --      16,616(3)           --            --           --
                              1995    206,112   $656,865      41,346(4)           --            --           --
Harry J. Carr(1)(5).........  1997    100,758         --       2,256(2)           --     1,000,000      $22,038(6)
  President and Chief         1996         --         --          --              --            --           --
  Operating Officer           1995         --         --          --              --            --           --
Kwok L. Li(1)...............  1997    150,008         --      13,562(2)           --            --           --
  Chief Technology Officer    1996    150,000         --      11,407(3)           --            --           --
                              1995    140,851    250,077      25,962(4)     $154,000(7)         --       15,940(6)
Barton Y. Shigemura(8)......  1997    135,007     50,000       1,525(2)           --            --        7,229(6)
  Senior Vice President,      1996     89,559      5,000         308(3)           --     1,000,000        4,680(6)
  Sales and Marketing         1995         --         --          --              --            --           --
Harry J. D'Andrea(9)........  1997     65,492     17,500          --              --       150,000           --
  Chief Financial Officer     1996         --         --          --              --            --           --
  and Treasurer               1995         --         --          --              --            --           --
</TABLE>
 
- ---------------
(1) The Company has employment agreements with each of Dr. Kim, Mr. Li and Mr.
    Carr.
 
(2) For Dr. Kim and Mr. Li, includes the Company's 1997 contribution to their
    401(k) plans of 313 and 277 Shares, respectively. For Dr. Kim and Messrs.
    Carr, Li and Shigemura, also includes compensation related to their use of
    Company vehicles of $8,750, $2,256, $8,750 and $1,525, respectively.
 
(3) For Dr. Kim and Mr. Li, includes the Company's 1996 contribution to their
    401(k) plans of $10,000 and $7,500, respectively. For Dr. Kim and Messrs. Li
    and Shigemura, also includes compensation related to their use of Company
    vehicles of $6,616, $1,846 and $308, respectively.
 
(4) Includes payments for unused vacation and sick leave and the Company's
    contribution to pension plans.
 
(5) Mr. Carr replaced Mr. Li as President and Chief Operating Officer in June
    1997, and is included in the Summary Compensation Table for the first time.
 
(6) Represents reimbursed relocation expenses and, for Messrs. Li and Carr,
    applicable associated taxes.
 
(7) Represents the fair market value of 4,000,000 fully-vested Shares granted to
    Mr. Li in March 1995, as of the date of the grant.
 
(8) Mr. Shigemura joined the Company in July 1996.
 
(9) Mr. D'Andrea joined the Company in July 1997 as its Chief Financial Officer,
    and is included in the Summary Compensation Table for the first time.
 
                                        4
<PAGE>   6
 
STOCK OPTION GRANTS DURING FISCAL YEAR 1997
 
     The following table sets forth the stock option grants to each of the named
executive officers for fiscal 1997. There were no stock appreciation rights
(SARs) granted by the Company in fiscal 1997.
 
            OPTION GRANTS IN THE FISCAL YEAR ENDED DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                   INDIVIDUAL GRANTS(1)
                                     -------------------------------------------------
                                                  % OF TOTAL                              POTENTIAL REALIZABLE VALUE
                                     NUMBER OF     OPTIONS                                 AT ASSUMED ANNUAL RATES
                                     SECURITIES   GRANTED TO                             OF STOCK PRICE APPRECIATION
                                     UNDERLYING   EMPLOYEES    EXERCISE/                      FOR OPTION TERM(2)
                                      OPTIONS     IN FISCAL    BASE PRICE   EXPIRATION   ----------------------------
               NAME                   GRANTED        YEAR        ($/SH)        DATE          5%               10%
               ----                  ----------   ----------   ----------   ----------   ----------       -----------
<S>                                  <C>          <C>          <C>          <C>          <C>              <C>
Jeong H. Kim(3)....................         --         --            --           --             --                --
Harry J. Carr(4)...................  1,000,000       35.8%     $  9.625      4/30/07     $6,053,111       $15,339,771
Kwok L. Li(3)......................         --         --            --           --             --                --
Barton Y. Shigemura................         --         --            --           --             --                --
Harry J. D'Andrea(5)...............    150,000        5.4%      17.0625      6/30/07      1,609,577         4,078,985



</TABLE>
 
- ---------------
(1) All awards listed on table were in the form of option grants made pursuant
    to the Company's Stock Option Plan. See "Stock Option Plan."
 
(2) Sets forth potential option gains based on assumed annualized rates of stock
    price appreciation from the market price at the date of grant of 5% and 10%
    (compounded annually) over the full term of the grant with appreciation
    determined as of the expiration date. The 5% and 10% assumed rates of
    appreciation are mandated by the rules of the Securities and Exchange
    Commission, and do not represent the Company's estimate or projection of
    future Share prices.
 
(3) To date, neither Dr. Kim nor Mr. Li has been granted options to purchase
    Shares.
 
(4) Mr. Carr's options vest over a four-year period in accordance with the Stock
    Option Plan and are subject to the terms of the Stock Option Plan, with
    certain exceptions. See "Stock Option Plan" and "Employment Agreements and
    Change In Control Provisions."
 
(5) Mr. D'Andrea's options vest over a four-year period in accordance with the
    Stock Option Plan, and are subject to the terms of the Stock Option Plan.
    See "Stock Option Plan."
 
AGGREGATED OPTION VALUES
 
     The following table sets forth the stock option values as of December 31,
1997 for each of the named executive officers. One of the named executive
officers, Mr. Shigemura, exercised 10,000 of his stock options during the fiscal
year ended December 31, 1997.
 
     AGGREGATED OPTION EXERCISES AND OPTION VALUES AS OF DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                            NUMBER OF SECURITIES          VALUE OF UNEXERCISED
                                                           UNDERLYING UNEXERCISED             IN-THE-MONEY
                                 NUMBER OF                       OPTIONS AT                    OPTIONS AT
                                  SHARES                       FISCAL YEAR-END             FISCAL YEAR-END(1)
                                ACQUIRED ON    VALUE     ---------------------------   ---------------------------
             NAME                EXERCISE     REALIZED   EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
             ----               -----------   --------   -----------   -------------   -----------   -------------
<S>                             <C>           <C>        <C>           <C>             <C>           <C>
Jeong H. Kim..................        --            --          --              --             --              --
Harry J. Carr.................        --            --          --       1,000,000             --     $10,562,500
Kwok L. Li....................        --            --          --              --             --              --
Barton Y. Shigemura...........    10,000      $329,800     427,500         562,500     $8,407,856      11,062,969
Harry J. D'Andrea.............        --            --          --         150,000             --         468,750
</TABLE>
 
- ---------------
(1) Sets forth values for "in the money" options that represent the positive
    spread between the respective exercise/base prices of outstanding stock
    options and the closing price of the Common Stock of $20.1875 per share as
    reported by the Nasdaq National Market on December 31, 1997.
 
                                        5
<PAGE>   7
 
STOCK OPTION PLAN
 
     Under the Company's Stock Option Plan, stock option awards may be made to
employees, consultants, directors and officers of the Company. The purposes of
the Stock Option Plan are to attract, retain and motivate the best available
officers (executive or otherwise), other employees and consultants for positions
of substantial responsibility, to give such officers, employees and consultants
a greater personal stake in the success of the Company's business, to provide
additional incentive to the Company's officers and employees to continue and
advance in their employment and service to the Company and to promote the
success of the Company's business.
 
     The Stock Option Plan was adopted by the Company's Board of Directors on
January 31, 1996 and amended and restated on May 14, 1997 to increase the
maximum number of Shares issuable under the Stock Option Plan. The Company's
shareholders approved the amended and restated Stock Option Plan on June 26,
1997. A total of 7.0 million Shares have been reserved for issuance under the
Stock Option Plan, 27,233 of which may be issued under the Data Labs Plan
described below. The Stock Option Plan will remain effective until all Shares
available for issuance under the Plan have been issued, unless sooner terminated
by action of the Board of Directors. The number and kind of Shares subject to
the Stock Option Plan may be adjusted by the Board to prevent dilution or
enlargement of rights in the event of a merger, consolidation, sale of all or
substantially all of the assets of the Company, reorganization,
reclassification, stock dividend, stock split, reverse stock split or other
similar distribution with respect to the outstanding Shares. No individual may
be granted options to purchase more than 1,500,000 Shares in any year under the
Stock Option Plan. An additional amendment to the Stock Option Plan, adopted by
the Board of Directors on July 30, 1997, provides that stock options granted
pursuant to the Stock Option Plan are transferable to members of the option
holder's "immediate family" (as defined in the Stock Option Plan), subject to
the terms and conditions of the Stock Option Plan.
 
     The Stock Option Plan is administered by the Board of Directors, although
the Board is in some cases authorized (and in some cases required) to delegate
the administration of the Stock Option Plan to a committee. The Board (or the
committee) is authorized to modify or amend the Stock Option Plan at any time.
The Board (or the committee) is further authorized to select the optionees and
determine the terms of the options granted, including: (i) the number of Shares
subject to each option; (ii) when the option becomes exercisable; (iii) the
duration of the option and (iv) any other appropriate term of the option
agreement. The Board (or the committee) also may accelerate or extend the time
at which any option may be exercised. The Stock Option Plan requires that the
exercise price of each option be set at the fair market value of the Shares on
the effective date of the grant.
 
     As of April 24, 1998, options to acquire an aggregate of 5,484,329 Shares
were outstanding pursuant to the Stock Option Plan (net of canceled options) and
925,786 Shares remained for future grants. In general, these options vest over a
four-year period from their grant date and expire after a specified period not
to exceed ten years. Neither Dr. Kim nor Mr. Li hold any options to purchase
Shares under the Stock Option Plan. Other executive officers and directors have
been granted options to purchase Shares under the Stock Option Plan as of April
24, 1998 as follows: Harry J. Carr -- 1,000,000; Barton Y. Shigemura --
1,000,000; Harry J. D'Andrea -- 150,000; John J. McDonnell -- 30,000; Herbert
Rabin -- 126,000; R. James Woolsey -- 105,000; Kenneth D. Brody -- 80,000; and
William J. Perry -- 80,000. These options have exercise prices ranging from $.52
to $17.06 per share and a weighted average exercise price of $4.84. All of these
options vest periodically through June 2001.
 
     The options granted under the Stock Option Plan are not incentive stock
options within the meaning of Section 422 of the Internal Revenue Code.
 
COMPENSATION OF DIRECTORS
 
     Directors who are not employees of the Company each receive $5,000 per year
for serving on the Board of Directors, and are reimbursed for their travel and
out-of-pocket expenses incurred in connection with attendance at meetings of the
Board of Directors or committees thereof. In addition, the Company's Stock
Option Plan provides for automatic annual grants to non-employee directors of
5,000 stock options on June 30
                                        6
<PAGE>   8
 
of each year, vesting over a four-year period. Each of Drs. Rabin and Perry, and
Messrs. Woolsey and Brody received automatic grants of options to purchase 5,000
Shares during 1997. Non-employee directors may also receive options to purchase
Shares upon their initial appointment or election to the Board of Directors.
Upon his appointment to the Board of Directors in 1997, Dr. Perry received
options to purchase 75,000 Shares. Options granted to directors during 1997 have
a weighted average exercise price of $10.70 and vest periodically over four
years. See "Stock Option Plan."
 
EMPLOYMENT AGREEMENTS AND CHANGE-IN-CONTROL PROVISIONS
 
     The Company has an employment agreement with Dr. Kim, its Chief Executive
Officer and Chairman of the Board of Directors (the "Kim Employment Agreement").
Pursuant to the Kim Employment Agreement, Dr. Kim receives an annual salary of
$200,000 and a bonus of 20% of his annual base salary or such other amount as
the Board of Directors may determine. Dr. Kim's employment is for a one-year
term that renews automatically unless terminated by either party. If the Kim
Employment Agreement is terminated by the Company for any reason other than
"disability" or "cause" or by Dr. Kim for any reason other than "good reason"
(as those terms are defined in the Kim Employment Agreement), the Company must
make a cash lump sum severance payment equal to Dr. Kim's base salary (as
defined in the Kim Employment Agreement) and a "bonus amount" for the
then-current year, and continue his benefits for up to one year. Throughout his
employment, Dr. Kim is bound by a covenant not to compete, which prevents him
from engaging in any business in the United States in which the Company is then
involved. Dr. Kim will continue to be bound by this covenant not to compete for
one year after his termination or resignation. The Kim Employment Agreement also
provides for certain registration rights with respect to Dr. Kim's Shares
pursuant to a registration rights agreement. The Kim Employment Agreement will
terminate upon the consummation of the Offer pursuant to the terms of a
retention agreement, dated as of April 27, 1998, among Parent, Purchaser, the
Company, the Bank of New York and Dr. Kim. Dr. Kim's retention agreement is
described in Section 12 of Parent's offer to purchase, dated April 30, 1998,
(the "Offer to Purchase"), and is incorporated herein by reference.
 
     The Company has an employment agreement with Mr. Li, its Chief Technology
Officer and Vice Chairman of the Board of Directors (the "Li Employment
Agreement"). Pursuant to the Li Employment Agreement, as amended, Mr. Li will
receive an annual salary of $150,000 and a bonus of 20% of his annual base
salary or such other amount as the Board of Directors may determine. Mr. Li's
employment is for a one-year term that renews automatically unless terminated by
either party. If the Li Employment Agreement is terminated by the Company for
any reason other than "disability" or "cause" or by Mr. Li for any reason other
than "good reason" (as those terms are defined in the Li Employment Agreement),
the Company must make a cash lump sum severance payment equal to Mr. Li's base
salary for the then-current year and a "bonus amount" (as defined in the Li
Employment Agreement), and continue his benefits for up to one year. Throughout
his employment, Mr. Li is bound by a covenant not to compete, which prevents him
from engaging in any business in the United States in which the Company is then
involved. Mr. Li will continue to be bound by this covenant not to compete for
one year after his termination. The Li Employment Agreement, as amended,
acknowledges Mr. Li's position with Splitrock and allows him, to a material
extent, to participate in business activities relating to Splitrock. The Li
Employment Agreement also provides for certain registration rights with respect
to Mr. Li's Shares pursuant to a registration rights agreements. The Li
Employment Agreement will terminate upon the consummation of the Offer pursuant
to the terms of a retention agreement, dated as of April 27, 1998, among Parent,
Purchaser, the Company, the Bank of New York and Mr. Li. Mr. Li's retention
agreement is described in Section 12 of Parent's Offer to Purchase, and is
incorporated herein by reference.
 
     The Company has an employment agreement with Mr. Carr, its President and
Chief Operating Officer (the "Carr Employment Agreement"). Pursuant to the Carr
Employment Agreement, Mr. Carr will receive an annual salary of $200,000 and a
bonus of 20% of his annual base salary or such other amount as the Board of
Directors may determine. Mr. Carr's employment is for a three-year term that
renews automatically for one-year terms unless terminated by either party. If
the Carr Employment Agreement is terminated by the Company for any reason other
than "disability" or "cause" or by Mr. Carr for "good reason" (as those terms
are defined in the Carr Employment Agreement), the Company must make a cash lump
sum severance
 
                                        7
<PAGE>   9
 
payment equal to Mr. Carr's base salary for then-current year and a "bonus
amount" (as defined in the Carr Employment Agreement), and continue his benefits
for up to one year. Throughout his employment, Mr. Carr is bound by a covenant
not to compete, which prevents him from engaging in any business in the United
States in which the Company is then involved. Unless terminated by the Company
other than for "disability" or "cause," or by Mr. Carr for "good reason," Mr.
Carr will continue to be bound by this covenant not to compete for one year
after his termination. In connection with the Carr Employment Agreement, the
Company granted Mr. Carr options to purchase 1,000,000 Shares (the "Carr
Options"). The vesting schedule of the Carr Options follows the Stock Option
Plan, including the vesting provisions that are triggered upon a change in
control of the Company. If Mr. Carr's employment is terminated by the Company
without "cause" or for "disability" or by Mr. Carr for "good reason," the Carr
Options will automatically become fully exercisable. In the case other than
voluntary termination by Mr. Carr, the then vested Carr Options will not
terminate until the expiration of their term. The Carr Employment Agreement will
terminate upon the consummation of the Offer pursuant to the terms of a
retention agreement, dated as of April 27, 1998, among Parent, Purchaser, the
Company, the Bank of New York and Mr. Carr. Mr. Carr's retention agreement is
described in Section 12 of Parent's Offer to Purchase, and is incorporated
herein by reference.
 
     Mr. Shigemura, the Company's Senior Vice President of Sales and Marketing,
does not currently have an employment agreement with the Company, but has
entered into a retention agreement, dated as of April 27, 1998, among Parent,
Purchaser, the Company, the Bank of New York and Mr. Shigemura. Mr. Shigemura's
retention agreement is described in Section 12 of Parent's Offer to Purchase,
and is incorporated herein by reference.
 
     In connection with their retention agreements, each of Dr. Kim, Mr. Li, 
Mr. Carr and Mr. Shigemura has entered into a three-year non-competition
agreement with Parent, dated as of April 27, 1998.
 
     Parent, the Purchaser and certain principal stockholders of the Company
(the "Stockholders") have entered into a Stockholders Agreement dated as of
April 27, 1998, pursuant to which each Stockholder has agreed to tender its
Shares into the Offer. These Shares represent approximately 57% of the
outstanding Shares (determined on a fully diluted basis). The Stockholders
Agreement is described in Section 12 of Parent's Offer to Purchase, and is
incorporated herein by reference.
 
     The Stock Option Plan provides that in the event of a transaction that
constitutes a Change of Control (as defined in the Stock Option Plan) of the
Company, each outstanding option will automatically become exercisable as to all
of the option shares immediately prior to the effective date of such
transaction, subject to certain exceptions. The consummation of the Offer will
constitute a Change of Control for purposes of the Stock Option Plan.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     No member of the Compensation Committee is a former or current officer of
the Company, nor does any executive officer serve as a member of the board of
directors or compensation committee of any entity which has one or more
executive officers serving as a member of the Company's Board of Directors or
Compensation Committee. During the fiscal year ended December 31, 1997, Mr.
Brody, Dr. Perry and Dr. Rabin (Chairman) served on the Compensation Committee.
 
COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION
 
     The Compensation Committee sets the Company's policies with respect to
executive compensation and reviews the performance and compensation levels for
three of the Company's named executive officers: the Chief Executive Officer,
the Chief Technology Officer, and the President/Chief Operating Officer. In
accordance with the policies set by the Compensation Committee, these executive
officers, in turn, determine the compensation for the other two named executive
officers (the Chief Financial Officer and the Senior Vice President of Sales and
Marketing) as well as the other officers of the Company. The Compensation
 
                                        8
<PAGE>   10
 
Committee or the Board of Directors approves option grants to executive officers
under the Stock Option Plan. No member of the Compensation Committee is employed
by the Company.
 
SUMMARY OF COMPENSATION POLICY
 
     The Company's policy is to provide a level of compensation to executive
officers in order (i) to attract, motivate, retain and reward superior talent
and (ii) to correlate executive officer compensation with the Company's
performance, thereby aligning executive officers' interests with those of the
Company's shareholders. In considering the Company's executive compensation
levels, the Compensation Committee reviewed the compensation packages of
executive officers in comparable positions at other similarly-sized
high-technology companies. Total executive officer compensation, including
equity-based compensation, is targeted at or above the market average for
comparable positions in similarly-sized companies.
 
     The Compensation Committee, furthermore, seeks to maintain an appropriate
balance between cash compensation and equity incentives for each executive
officer. In determining cash compensation, the Compensation Committee's policy
is to weigh each executive officer's existing equity incentives, whether in the
form of current equity ownership or potential equity ownership (based on the
future exercise of stock options) of the Company. The Company's compensation
program for its executive officers consists of base salary, long-term
compensation in the form of stock options, and cash bonuses as determined on an
individual basis.
 
BASE SALARIES
 
     Base salaries for executive officers are reviewed on an annual basis and
may be adjusted annually, based on an assessment of the individual's
contribution to the Company's performance, competitive pay levels and the
individual's existing equity incentives. The base salaries of executive officers
are not dependent upon the application of specific formulas. Although each of
the named executive officers had made significant contributions to the Company's
performance, because of their significant equity interests in the Company, the
named executive officers received modest or no increases to their respective
1997 base salaries.
 
     Two of the named executive officers, the President/Chief Operating Officer
and the Chief Financial Officer, joined the Company during 1997. The base salary
of the Chief Financial Officer was determined by the Compensation Committee and
approved by the Board of Directors. The base salary of the President/Chief
Operating Officer is set forth in an employment agreement with the Company,
which was approved by the Board of Directors. Factors taken into account in
determining the starting base salaries of these executive officers were prior
experience, expected contribution to the Company, and the relative importance of
the job in terms of achieving corporate objectives.
 
     Base salaries for each of the President/Chief Operating Officer, the Chief
Technology Officer and Chief Executive Officer (discussed in more detail below),
are paid pursuant to employment agreements between each such executive officer
and the Company. See "Employment Agreements and Change In Control Provisions."
 
BONUSES
 
     The Company's policy as to bonuses for executive officers is subjective. In
determining whether to grant a cash bonus to a particular executive officer, the
Compensation Committee considers the existing equity incentives of each
executive officer, as well as individual performance and Company's performance.
Despite commendable individual performances and strong Company performance, the
Compensation Committee awarded no cash bonuses during 1997 because of the
significant equity interests held by the three named executive officers for
which it sets bonuses. Management awarded bonuses on an individual basis to the
officers whose bonuses are not set by the Compensation Committee. In awarding
these bonuses, management took into consideration that the Company had
successfully achieved critical objectives in 1997, including (i) completing its
initial public offering, (ii) shipping a new product, the LDR 50, to customers,
(iii) increasing commercial sales, and (iv) achieving earning targets for each
1997 quarter and for fiscal 1997.
 
                                        9
<PAGE>   11
 
CHIEF EXECUTIVE OFFICER COMPENSATION
 
     Dr. Jeong H. Kim has served as Chief Executive Officer of the Company since
1992. Dr. Kim's base salary, which is set at $200,000 per annum under his
employment agreement, is subject to annual review by the Board of Directors or
the Compensation Committee. The Compensation Committee did not make any
adjustments to the Chief Executive Officer's base salary or award any bonus to
him during 1997. This determination was based on the Compensation Committee's
assessment that Dr. Kim's interests are appropriately aligned with the Company's
interests because of his significant shareholdings of the Company's Shares.
 
STOCK OPTIONS
 
     The Compensation Committee strongly believes in correlating executive
officer compensation with the long-term success of the Company through the grant
of stock options. All stock options granted to executive officers are subject to
vesting restrictions that lapse in annual increments to motivate executive
officers to stay with the Company.
 
     The Company grants stock options to executive officers upon their joining
the Company and may make additional periodic grants thereafter to reward the
performance of executive officers and to provide incentives for future
performance. There is no established formula or criteria for grants under the
Stock Option Plan, and options are granted at intervals as determined on a
subjective basis by the Board of Directors or the Compensation Committee. Under
the Stock Option Plan, options may be granted at exercise prices equal to the
Fair Market Value (as defined in the Stock Option Plan) of the Shares on the
date of grant. Thus, as a stockholder benefits from a stock price increase above
the exercise price, an optionee likewise benefits. In this manner, the interests
of the officer and those of the Company's shareholders are aligned.
 
     Neither the Chief Executive Officer nor the Chief Technology Officer holds
any stock options, and the Compensation Committee has not recommended stock
option grants to either of these individuals due to their existing equity
ownership of the Company. Dr. Kim and Mr. Li each holds a significant percentage
of the Company's Shares and, therefore, each participates proportionately in
increases in stockholder value.
 
OTHER BENEFITS
 
     The Company does not maintain benefit plans exclusively for its executive
officers. Executive officers, as well as all other employees, are eligible to
participate in the Company's 401(k) Plan and Employee Stock Purchase Plan.
Pursuant to the 401(k) Plan, the Company provides matching contributions in the
form of Shares of up to a maximum of 5% of the employee's base salary.
 
COMPLIANCE WITH SECTION 162(m)
 
     The Compensation Committee will consider, if and when applicable, the
potential impact of Section 162(m) of the Internal Revenue Code of 1986, as
amended, and its limit on tax deductions for annual compensation in excess of
$1,000,000 paid to the Company's Chief Executive Officer or any of the other
four most highly compensated executive officers. The Compensation Committee does
not believe that this limitation will apply to the Company in the foreseeable
future. Among other things, the individual annual base salaries (and bonuses) of
the Company's Chief Executive Officer and the other executive officers do not
currently exceed $1,000,000. In addition, the Company's Stock Option Plan has
been designed so that compensation attributable to stock options granted
pursuant to the Plan will qualify under the performance-based compensation
exception to Section 162(m).
 
                                          BY THE COMPENSATION COMMITTEE
                                          Dr. Herbert Rabin (Chairman)
                                          Kenneth D. Brody
                                          Dr. William J. Perry
 
                                       10
<PAGE>   12
 
COMPARATIVE STOCK PERFORMANCE
 
     The following graph compares the cumulative total stockholder return on the
Company's common stock with the cumulative total return of the Nasdaq Stock
Market Index and the Nasdaq Computer Manufacturer Stock Index during the period
beginning February 5, 1997, the Company's initial public offering date, and
ending December 31, 1997.
 
                              YURIE SYSTEMS, INC.
                      Total Cumulative Shareholder Return
                   February 5, 1997 through December 31, 1997
 
<TABLE>
<CAPTION>
                                                                         Nasdaq
                                                                        Computer
               Measurement Period                      Yurie          Manufacturer      Nasdaq Stock
             (Fiscal Year Covered)                 Systems, Inc.      Stock Index       Market Index
<S>                                               <C>               <C>               <C>
2/5/97                                                      100.00            100.00            100.00
12/31/97                                                    133.47            119.24            117.36
</TABLE>
 
                                       11
<PAGE>   13
 
ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     The following table sets forth certain information known by the Company
regarding the beneficial ownership of the Company's Shares, as of March 31,
1998, by each beneficial owner of more than five percent of the outstanding
Shares, by each of the Company's directors, each of the executive officers named
in the Summary Compensation Table and all directors and officers of the Company
as a group. To the Company's knowledge, except as otherwise indicated, the
persons listed below have sole voting and investment power with respect to all
Shares beneficially owned by them, except to the extent such power may be shared
with a spouse.
 
<TABLE>
<CAPTION>
                                                            NUMBER OF SHARES             PERCENTAGE OF
                                                           BENEFICIALLY OWNED            COMMON STOCK
                                                      ----------------------------       BENEFICIALLY
      NAME AND ADDRESS OF BENEFICIAL OWNER(1)           DIRECT         INDIRECT(3)         OWNED(2)
      ---------------------------------------         ----------       -----------       -------------
<S>                                                   <C>              <C>               <C>
Jeong H. Kim........................................  13,287,400(4)           513(5)          52.1%
Kwok L. Li..........................................      20,000        3,150,277(6)          12.4
Harry J. Carr.......................................          --          250,000                *
Kenneth D. Brody....................................          --          724,380(4)           2.8
Barton Y. Shigemura.................................       6,306          443,125              1.7
R. James Woolsey....................................      51,000(7)        53,125(8)             *
Herbert Rabin.......................................          --           30,834                *
Harry J. D'Andrea...................................          --               --                *
John J. McDonnell...................................          --            5,625                *
William J. Perry....................................          --           26,042                *
Amerindo Technology Growth Fund, Inc.(9)............   2,645,500                              10.4
  One Embarcadero Center, Suite 2300
  San Francisco CA 94111
All executive officers and directors as a group (10
  persons)..........................................  13,364,706        3,996,521             66.0%
</TABLE>
 
- ---------------
 *  Less than 1%.
 
(1) Unless otherwise set forth in the table, the address listed for the
    beneficial owners and managers is c/o Yurie Systems, Inc., 8301 Professional
    Place, Landover, Maryland, 20785.
 
(2) Applicable percentage is based on 25,482,461 Shares outstanding on March 31,
    1998.
 
(3) Unless otherwise indicated, consists of Shares issuable pursuant to options
    granted pursuant to the Stock Option Plan and exercisable currently or
    within 60 days of March 31, 1998. Pursuant to the rules of the Commission,
    Shares which a person has the right to acquire within 60 days pursuant to
    the exercise of stock options are deemed to be outstanding for the purpose
    of computing the percentage of ownership of such person, but are not deemed
    outstanding for the purpose of computing the percentage ownership of any
    other person.
 
(4) Includes 687,400 Shares subject to an option to purchase Shares from Dr. Kim
    held by Mr. Brody (the "Brody Option"). The Brody Option originally covered
    1,000,000 Shares; however, as of March 31, 1998, Mr. Brody had exercised the
    option as to 312,600 Shares. For purposes of this table, and until Mr. Brody
    exercises his option to purchase the remaining 687,400 Shares, Dr. Kim and
    Mr. Brody share beneficial ownership of these Shares.
 
(5) Consists of 313 Shares held in the 401(k) Plan and 200 Shares owned by Dr.
    Kim's wife, the latter of which he disclaims beneficial ownership.
 
(6) Includes 2,200,000 Shares held by Linsang Partners LLC, of which Mr. Li
    holds a majority and controlling interest. Linsang is a significant
    shareholder of Splitrock. Also includes 950,000 Shares owned by Mr. Li's
    spouse, as to which he disclaims beneficial ownership, and 277 Shares held
    in the 401(k) Plan.
 
(7) Mr. Woolsey holds these Shares jointly with his spouse.
 
(8) Includes 25,000 Shares held in Mr. Woolsey's retirement account.
 
                                       12
<PAGE>   14
 
(9) As reported on Schedule 13D dated April 17, 1998. On November 7, 1996, prior
    to the Company's initial public offering, Amerindo Technology Growth Fund,
    Inc. ("Amerindo") purchased an aggregate of 1,000,000 Shares from: the
    Company (400,000 Shares); Dr. Kim (500,000 Shares); and Mr. Li (100,000
    Shares). Amerindo received registration rights in connection with these
    purchases.
 
CERTAIN TRANSACTIONS AND RELATIONSHIPS
 
     The matters set forth elsewhere in this Form 10-K/A.
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     On July 1, 1996, Dr. Jeong H. Kim and Kenneth D. Brody entered into an
agreement pursuant to which Mr. Brody paid $500,000 to buy an option (the "Brody
Option") to purchase 1,000,000 Shares from Dr. Kim at an exercise price of $4.00
per share. The Brody Option became fully vested on June 3, 1997. To secure Dr.
Kim's obligations to deliver Shares to Mr. Brody upon exercise of the Brody
Option, Dr. Kim granted Mr. Brody a security interest in all of the Shares
subject to the Brody Option. Mr. Brody may assign the Brody Option, in whole or
in part, subject to the limitation that each assignee (with the exception of
affiliates and family members) must be assigned a portion of the Brody Option
covering at least 200,000 Shares. The Brody Option is exercisable for a term of
20 years. As of April 24, 1998, Mr. Brody had exercised and sold 312,600 Shares
pursuant to the Brody Option, leaving 687,400 Shares subject to the Brody
Option.
 
     During 1997, certain executive officers and directors of the Company were
granted options to purchase Shares as follows: Harry J. Carr -- 1,000,000; Harry
J. D'Andrea -- 150,000; Dr. William J. Perry -- 80,000; Kenneth D. Brody --
5,000; Dr. Herbert Rabin -- 5,000; and R. James Woolsey -- 5,000. These options
have a weighted average exercise price of $10.60 per Share.
 
     On January 14, 1997, the Company entered into a consulting agreement with
In Y. Chung, under which Mr. Chung performed consulting and business development
activities for the Company in the Pacific Rim area. Pursuant to this consulting
agreement, the Company granted options to Mr. Chung to purchase 50,000 Shares at
an exercise price of $9.00 per Share. These options vested upon their grant. Mr.
Chung exercised these options in June 1997 and the Company issued 50,000 Shares
to Mr. Chung. Since 1997, the Company has employed Mr. Chung as Senior Advisor
to the Company's President, Harry J. Carr. The Company paid Mr. Chung $17,502 in
1997 and granted him options to purchase 100,000 Shares at an exercise price of
$20.1875 per Share in connection with his services as Senior Advisor to Mr.
Carr. Mr. Chung is the father-in-law of Dr. Jeong H. Kim.
 
     The Company has a significant customer relationship with Splitrock
Services, Inc., a Texas corporation that provides communications services
specifically configured to meet the needs of large network users. Splitrock
purchased the underlying network assets of Prodigy Services Corporation, an
Internet service provider in 1997. Yurie and Splitrock are parties to an
agreement (the "Splitrock Agreement") that requires Splitrock to purchase a
minimum of $20.0 million of LDR products from the Company in the period from
July 1997 to December 1998 and provided for Yurie to furnish services to support
deployment and implementation of Yurie's products in Splitrock's network on a
time and materials basis. Kwok L. Li, the Chief Technology Officer and Vice
Chairman of the Board of Yurie, is Chairman of the Board of Splitrock and the
majority and controlling shareholder of Linsang Partners LLC. Linsang Partners
LLC and Mr. Li are the majority shareholders of Splitrock.
 
     Of the Company's sales of LDR products in 1997, $12.4 million consisted of
direct purchases by Splitrock, $7.6 million of which purchases were credited
against Splitrock's minimum purchase guarantee under the Splitrock Agreement.
Splitrock and Ericsson executed a letter of intent on February 2, 1998, pursuant
to which Ericsson would provide Splitrock with certain services as well as LDR
products that Ericsson had purchased or will purchase under its private-label
partner agreement with the Company.
 
                                       13
<PAGE>   15
 
Subsequently, during the first quarter of 1998, Linsang Partners LLC agreed to
purchase from Ericsson for use in Splitrock's network the $5 million of LDR
products sold to Ericsson in the fourth quarter of 1997. This expected $5
million purchase is separate from the $12.4 million of product sales to
Splitrock during 1997 and upon such purchase by Linsang Partners LLC will be
credited against Splitrock's minimum purchase guarantee under the Splitrock
Agreement. Linsang Partners LLC also submitted a purchase order to Ericsson for
up to an additional $2 million of LDR products, which purchases, as made, will
also be credited against Splitrock's minimum purchase guarantee under the
Splitrock Agreement.
 
     R. James Woolsey, a director of the Company, is a partner in the law firm
of Shea & Gardner, which is one of several law firms that performs legal work
for the Company.
 
     The following information hereby supplements Part IV:
 
                                    PART IV
 
ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(a) Documents Filed as Part of this Report:
 
     Those exhibits required by Item 601 of Regulation S-K are listed in the
Exhibit Index included elsewhere in this report, which list is incorporated
herein by reference.
 
(b) Reports on Form 8-K:
 
     The Company has filed the following Reports on Form 8-K:
 
     On April 15, 1998, the Company filed a report under Items 5 and 7 of Form
8-K to report its earnings release for the three months ended March 31, 1998.
 
     On April 27, 1998 the Company filed a report under Items 5 and 7 of Form
8-K to report on a joint press release with Lucent Technologies Inc.,
announcing Lucent's planned acquisition of the Company.
 
     On May 11, 1998 the Company filed a report under Item 1 of Form 8-K to
describe the proposed merger of the Company with Lucent Technologies Inc., and
a stockholders' agreement under which stockholders holding approximately 57% of
the Company's Shares agreed to tender their shares to Lucent.
 
                                       14
<PAGE>   16
 
                                   SIGNATURES
 
     PURSUANT TO THE REQUIREMENTS OF SECTION 13 OR 15(D) 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, IN LANDOVER, MARYLAND,
ON THIS 12th DAY OF MAY, 1998.
        

                                          Yurie Systems, Inc.
                                          By:
                                                  /s/ DR. JEONG H. KIM
                                            ------------------------------------
                                            Name: Dr. Jeong H. Kim
                                            Title: Chairman of the Board and
                                                   Chief Executive Officer
 
     PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, AS
AMENDED, THIS REPORT HAS BEEN SIGNED BY THE FOLLOWING PERSONS IN THE CAPACITIES
AND ON THE DATES INDICATED.
 
<TABLE>
<CAPTION>
                     SIGNATURE                                      TITLE                     DATE
                     ---------                                      -----                     ----
<C>                                                    <S>                                <C>
 
             /s/ JEONG H. KIM                          Chairman of the Board and Chief    May 12, 1998
- ---------------------------------------------------    Executive Officer
                   Jeong H. Kim
 
             /s/ KWOK L. LI                            Vice Chairman of the Board and     May 12, 1998
- ---------------------------------------------------    Chief Technical Officer
                    Kwok L. Li
 
             /s/ HARRY J. CARR                         President, Chief Operating         May 12, 1998
- ---------------------------------------------------    Officer, and a Director
                   Harry J. Carr
 
             /s/ BARTON Y. SHIGEMURA                   Senior Vice President, Sales       May 12, 1998
- ---------------------------------------------------    and Marketing and a Director
                Barton Y. Shigemura
 
             /s/ HARRY J. D'ANDREA                     Chief Financial Officer and        May 12, 1998
- ---------------------------------------------------    Treasurer (also Chief
                 Harry J. D'Andrea                     Accounting Officer)
 
             /s/ R. JAMES WOOLSEY                      Director                           May 12, 1998
- ---------------------------------------------------
                 R. James Woolsey
 
             /s/ HERBERT RABIN                         Director                           May 12, 1998
- ---------------------------------------------------
                   Herbert Rabin
 
             /s/ WILLIAM J. PERRY                      Director                           May 12, 1998
- ---------------------------------------------------
                 William J. Perry
 
             /s/ KENNETH D. BRODY                      Director                           May 12, 1998
- ---------------------------------------------------
                 Kenneth D. Brody
</TABLE>
 
                                       15
<PAGE>   17
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                            DESCRIPTION
- -------                           -----------
<S>       <C>
 2.2      Agreement and Plan of Merger by and among Yurie Systems, Inc.,
          Lucent Technologies, Inc., and Reindeer Acquisitions, Inc.
10.19     Stockholders Agreement by and among Lucent Technologies, Inc.,
          Reindeer Acquisitions, Inc., and certain Stockholders of Yurie
          Systems, Inc.
</TABLE>


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