<PAGE>   1
                            SCHEDULE 14A INFORMATION
                                 (Rule 14a-101)

                  PROXY STATEMENT PURSUANT TO SECTION 14(A) OF
             THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No.  )

Filed by the Registrant [X]

Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ]  Preliminary Proxy Statement
[ ]  Confidential, for Use of the Commission Only (as permitted by Rule
     14a-6(e)(2)) 
[X]  Definitive Proxy Statement 
[ ]  Definitive Additional Materials
[ ]  Soliciting Material Pursuant to sec.240.14a-11(c) or sec.240.14a-12

                                  VIASAT, INC.
--------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)


--------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X] No fee required.

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

    (1) Title of each class of securities to which transaction applies:

    (2) Aggregate number of securities to which transaction applies:

    (3) Per unit price or other underlying value of transaction computed
        pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
        filing fee is calculated and state how it was determined):

    (4) Proposed maximum aggregate value of transaction:

    (5) Total fee paid:


[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange Act
    Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
    paid previously. Identify the previous filing by registration statement
    number, or the Form or Schedule and the date of its filing.

    (1) Amount Previously Paid:

    (2) Form, Schedule or Registration Statement No.:

    (3) Filing Party:

    (4) Date Filed:


<PAGE>   2
 
                                  VIASAT, INC.
                               2290 COSMOS COURT
                           CARLSBAD, CALIFORNIA 92009
 

                          NOTICE OF ANNUAL MEETING OF
                        STOCKHOLDERS AND PROXY STATEMENT
 
To the Stockholders of ViaSat, Inc.:
 
     Notice is hereby given that the Annual Meeting of Stockholders of ViaSat,
Inc. (the "Company"), will be held at the Del Mar Hilton, 15575 Jimmy Durante
Boulevard, Del Mar, California on September, 15, 1999 at 8:30 a.m. for the
following purposes:
 
     1. To elect two directors for a three-year term to expire at the 2002
        Annual Meeting of Stockholders. The present Board of Directors of the
        Company has nominated and recommends for election as directors the
        following two persons:
 
          MARK D. DANKBERG
          JAMES F. BUNKER
 
     2. To consider and vote upon a proposal to amend The ViaSat, Inc. Employee
        Stock Purchase Plan (the "Purchase Plan") to (a) increase the number of
        shares authorized for issuance under the Purchase Plan by 250,000 shares
        and (b) change the vote required to amend the Purchase Plan to a
        majority of the votes cast at a duly held meeting of stockholders.
 
     3. To transact such other business as may properly come before the meeting
        or any adjournment or postponement thereof.
 
     The Board of Directors has fixed the close of business on July 20, 1999 as
the record date for the determination of stockholders entitled to notice of and
to vote at the Annual Meeting and at any adjournment or postponement thereof.
 
     Accompanying this Notice of Annual Meeting is a proxy. WHETHER OR NOT YOU
EXPECT TO BE AT THE MEETING, PLEASE COMPLETE, SIGN AND DATE THE ENCLOSED PROXY
AND RETURN IT PROMPTLY. If you plan to attend the Annual Meeting and wish to
vote your shares personally, you may do so at any time before the proxy is
voted.
 
     All stockholders are cordially invited to attend the meeting.
 
                                          BY ORDER OF THE BOARD OF DIRECTORS
                                          /s/ Mark D. Dankberg
                                          Mark D. Dankberg
                                          Chairman of the Board
                                          and Chief Executive Officer
 
Carlsbad, California
J
uly 29, 1999

<PAGE>   3
 
                                  VIASAT, INC.
                               2290 COSMOS COURT
                           CARLSBAD, CALIFORNIA 92009
 
                                PROXY STATEMENT
 
     The Board of Directors of the Company is soliciting the enclosed proxy for
use at the Annual Meeting of Stockholders to be held on September 15, 1999, at
8:30 a.m., at the Del Mar Hilton, 15575 Jimmy Durante Boulevard, Del Mar,
California. This Proxy Statement was first mailed to stockholders on or about
August 13, 1999.
 
     All stockholders who find it convenient to do so are cordially invited to
attend the meeting in person. In any event, please complete, sign, date and
return the proxy in the enclosed envelope.
 
     A proxy may be revoked by written notice to the Secretary of the Company at
any time prior to the voting of the proxy, or by executing a later proxy or by
attending the meeting and voting in person. Unrevoked proxies will be voted in
accordance with the instructions indicated in the proxies, or if there are no
such instructions, such proxies will be voted for the election of the Board's
nominees for director and for approval of the amendments to The ViaSat, Inc.
Employee Stock Purchase Plan (the "Purchase Plan") to (1) increase the number of
shares authorized for issuance under the Purchase Plan by 250,000 shares and (2)
change the vote required to amend the Purchase Plan to a majority of the votes
cast at a duly held meeting of stockholders at which a quorum is present (the
"Amendments"). Shares represented by proxies that reflect abstentions or include
"broker non-votes" will be treated as present and entitled to vote for purposes
of determining the presence of a quorum. Abstentions and "broker non-votes" do
not constitute a vote "for" or "against" any matter and thus will have the same
effect as votes cast against the Amendments.
 
     Stockholders of record at the close of business on July 20, 1999 will be
entitled to vote at the meeting. As of that date, 8,070,226 shares of common
stock, par value $.0001 per share ("Common Stock"), of the Company were
outstanding. Each share of Common Stock is entitled to one vote. A majority of
the outstanding shares of the Company, represented in person or by proxy at the
meeting, constitutes a quorum. A plurality of the votes cast at the meeting is
required to elect directors, and a majority of the outstanding shares of Common
Stock entitled to vote at the meeting is required to approve the Amendments.
 
     The cost of preparing, assembling and mailing the Notice of Annual Meeting,
Proxy Statement and proxy will be borne by the Company.
 

                                  PROPOSAL 1:
 
                             ELECTION OF DIRECTORS
 
     The Board of Directors currently consists of six members. The Company's
Amended and Restated Certificate of Incorporation and Bylaws provide that the
Board of Directors shall be divided into three classes, as nearly equal in
number as possible, with staggered terms of office and provide that upon the
expiration of the term of office for a class of directors, nominees for such
class shall be elected for a term of three years or until their successors are
duly elected and qualified. At this meeting, two nominees for director are to be
elected as Class III directors for a three-year term expiring at the 2002 Annual
Meeting of Stockholders. The nominees are Mark D. Dankberg and James F. Bunker.
The Class I and Class II directors have one year and two years, respectively,
remaining on their terms in office. If no contrary indication is made, proxies
in the accompanying form are to be voted for Mr. Dankberg and Mr. Bunker or in
the event that Mr. Dankberg or Mr. Bunker is not a candidate or is unable to
serve as a director at the time of the election (which is not currently
expected), for any nominee who shall be designated by the Board of Directors to
fill such vacancies. Mr. Dankberg and Mr. Bunker are members of the present
Board of Directors.
 
                                        1

<PAGE>   4
 
INFORMATION REGARDING DIRECTORS
 
     Set forth below is certain information concerning the nominees to the Board
of Directors, as well as those directors whose terms are continuing after the
meeting.
 
                NOMINEES FOR ELECTION TO THE BOARD OF DIRECTORS
 
                     FOR A THREE-YEAR TERM EXPIRING AT THE
                      2002 ANNUAL MEETING OF STOCKHOLDERS
 

<TABLE>
<CAPTION>
                 NAME                    AGE          PRESENT POSITION WITH THE COMPANY
                 ----                    ---          ---------------------------------
<S>                                      <C>   <C>
Mark D. Dankberg.......................  44              Chairman, President and CEO
James F. Bunker........................  65                        Director
</TABLE>

 
     MARK D. DANKBERG was a founder of the Company and has served as Chairman of
the Board, President and Chief Executive Officer of the Company since its
inception in May 1986. Mr. Dankberg also serves as a director of Connected
Systems, a privately held company that develops and manufacturers digital voice
messaging systems. Prior to founding the Company, he was Assistant Vice
President of M/A-COM Linkabit, a manufacturer of satellite telecommunications
equipment, from 1979 to 1986 and Communications Engineer for Rockwell
International from 1977 to 1979. Mr. Dankberg holds B.S.E.E. and M.E.E. degrees
from Rice University.
 
     JAMES F. BUNKER has been a director of the Company since February 1997. In
July 1998, Mr. Bunker was named President and Chief Executive Officer of
Objective Communications, Inc., a publicly-held desktop video conferencing
company. Since 1993, Mr. Bunker has served as President of Windsor Consulting
Group, a privately held emerging technology and business transition consulting
company. From 1991 to 1993, he served as President of the VideoCipher division
of General Instruments, Inc. Prior to 1991, Mr. Bunker held several senior
management positions at M/A-Com Linkabit. Mr. Bunker received a B.S. degree in
Electrical Engineering from Northeastern University and completed the Sloan
School Senior Executive Program.
 
             MEMBERS OF THE BOARD OF DIRECTORS CONTINUING IN OFFICE
 
                              TERM EXPIRING AT THE
                      2000 ANNUAL MEETING OF STOCKHOLDERS
 

<TABLE>
<CAPTION>
                 NAME                    AGE          PRESENT POSITION WITH THE COMPANY
                 ----                    ---          ---------------------------------
<S>                                      <C>   <C>
Robert W. Johnson......................  49                        Director
William A. Owens.......................  59                        Director
</TABLE>

 
     DR. ROBERT W. JOHNSON has been a director of the Company since 1986. Dr.
Johnson has worked in the venture capital industry since 1980, and has acted as
an independent investor since 1988. Dr. Johnson currently is a director of Hi/fn
and Stac Software Inc., publicly-held companies which manufacture semiconductors
and software for networking, data storage and storage management. Dr. Johnson
also serves as a director of TimeLine Vista, a privately-held company which
manufactures professional audio equipment. Dr. Johnson holds B.S. and M.S.
degrees in Electrical Engineering from Stanford University and M.B.A. and D.B.A.
degrees from Harvard Business School.
 
     WILLIAM A. OWENS has been a director of the Company since August 1998. Mr.
Owens has been Co-Chief Executive Officer and Vice Chairman of Teledesic LLC, a
publicly held telecommunications company, and Chairman and Chief Executive
Officer of affiliated Teledesic Holdings Ltd. from August 14, 1998 to present.
Mr. Owens was President, Chief Operating Officer and Vice Chairman of Science
Applications International Corporation (SAIC), a privately held firm, from March
4, 1996 to August 1, 1998. From February 28, 1994 to February 28, 1996 Mr. Owens
was Vice Chairman of the Joint Chiefs of Staff, and the nation's second-ranking
military officer. Mr. Owens has also served as Deputy Chief of Naval Operations
for Resources, Warfare Requirements and Assessments, Commander of the U.S. Sixth
Fleet and Senior Military Assistant to the Secretary of Defense. Mr. Owens has a
B.S. degree in Mathematics from the U.S. Naval
 
                                        2

<PAGE>   5
 
Academy and holds B.A. and M. A. degree in politics, philosophy and economics
from Oxford University and a M.S. in Management from George Washington
University.
 
                              TERM EXPIRING AT THE
                      2001 ANNUAL MEETING OF STOCKHOLDERS
 

<TABLE>
<CAPTION>
                 NAME                    AGE          PRESENT POSITION WITH THE COMPANY
                 ----                    ---          ---------------------------------
<S>                                      <C>   <C>
Jeffrey M. Nash........................  51                        Director
B. Allen Lay...........................  64                        Director
</TABLE>

 
     DR. JEFFREY M. NASH has been a director of the Company since 1987. Since
1994, he has been President of Digital Perceptions Inc., a consulting and
software development firm serving the defense, communications, general aviation
and commercial computer industries. From August 1995 to December 1997, he was
President, Chief Executive Officer and a director of TransTech Information
Management Systems, Inc., a privately-held company which produced software and
mobile systems for the towing and recovery industry. From 1989 to 1994, he was
the Chief Executive Officer and President of Visqus Corporation as well as
Conner Technology, Inc., both subsidiaries of Conner Peripherals, Inc. Dr. Nash
is currently a director of REMEC, Inc., a publicly-held company which
manufactures microwave multi-function modules, Tiernan Communications, Inc., a
privately-held company manufacturing high definition television equipment, Prisa
Networks, a privately-held company manufacturing fiber channel networking
products for high-end storage area networks and ORINCON Technology Inc., a
privately-held defense and commercial technical services and software company.
He also serves as a Director and Chairman of the Board for Esscor, Inc., a
privately-held electrical utility power plant simulator company.
 
     B. ALLEN LAY has been a director of the Company since 1996. Since 1983, he
has been a General Partner of Southern California Ventures ("SCV"), a venture
capital company. Mr. Lay is currently a director of PairGain Technology, Inc., a
publicly-held telecommunications company, Kofax Imaging Systems, a publicly-held
document imaging systems company, Physical Optics Corporation, a privately-held
optical systems company and Waveband Corporation, a privately-held millimeter
wave scanning antennas and sensor company.
 
BOARD COMMITTEES AND MEETINGS
 
     During the fiscal year ended March 31, 1999, the Board of Directors held
six meetings. In that year, each director attended at least 75% of the aggregate
of all meetings held by the Board of Directors and all meetings held by all
committees of the Board on which such director served.
 
     The Company has an Audit Committee currently consisting of Messrs. Johnson
and Lay. The Audit Committee held one meeting subsequent to the completion of
the fiscal 1999 audit. The Audit Committee's responsibilities include, among
other things, reviewing the selection of independent certified public
accountants and meeting with the accountants regarding their management letters
and the annual audit.
 
     The Company has a Compensation Committee currently consisting of Messrs.
Nash and Bunker. The Compensation Committee held six meetings during fiscal
1999. The responsibilities of the Compensation Committee include, among other
things, reviewing, approving and reporting to the Board the Company's
compensation policies with respect to its executive officers, reviewing the
Company's overall compensation policy and making recommendations with respect
thereto, and administering the Company's stock based compensation plans.
 

COMPENSATION OF DIRECTORS
 
     Directors of the Company are reimbursed for expenses actually incurred in
attending meetings of the Board of Directors and its committees. Each
independent director at the time of initial election to the Board of Directors
is granted an option to purchase 7,500 shares of Common Stock and on the date of
each annual meeting is granted an option to purchase 4,000 shares of Common
Stock.
 
                                        3

<PAGE>   6
 
VOTE REQUIRED; RECOMMENDATION OF THE BOARD OF DIRECTORS
 
     If a quorum is present and voting at the Annual Meeting, the two nominees
receiving the highest number of votes will be elected to the Board. Votes
withheld from any nominee, abstentions and broker non-votes will be counted for
purposes of determining a quorum.
 
 
    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THE NOMINEES
LISTED ABOVE. PROXIES SOLICITED BY THE COMPANY WILL BE SO VOTED UNLESS
STOCKHOLDERS SPECIFY OTHERWISE ON THEIR PROXY CARDS.
 

                         SECURITY OWNERSHIP OF CERTAIN
 
                       BENEFICIAL OWNERS AND MANAGEMENT
 
     The following table sets forth certain information regarding the ownership
of the Company's Common Stock as of July 20, 1999, by: (1) each director and
nominee for director; (2) each of the Company's executive officers; (3) all
executive officers and directors of the Company as a group; and (4) all other
stockholders known by the Company to be beneficial owners of more than five
percent of its Common Stock. Unless otherwise indicated, the address for each of
the stockholders listed below is c/o ViaSat, Inc., 2290 Cosmos Court, Carlsbad,
California 92009.
 

<TABLE>
<CAPTION>
 
                                                              AMOUNT AND NATURE            PERCENT
                          NAME                             OF BENEFICIAL OWNERSHIP(1)   BENEFICIAL OWNED
                          ----                             --------------------------   ----------------
<S>                                                        <C>                          <C>
Mark D. Dankberg.........................................            839,200                 10.35%
Steven R. Hart...........................................            613,814                  7.60
Robert W. Johnson........................................            273,749                  3.39
Mark J. Miller...........................................            269,413                  3.33
Gregory D. Monahan.......................................            200,136                  2.47
Thomas E. Carter(2)......................................            191,067                  2.36
B. Allen Lay(3)..........................................            187,015                  2.31
Jeffrey M. Nash..........................................            177,707                  2.20
Andrew M. Paul...........................................             75,624                     *
Robert L. Barrie.........................................             24,242                     *
James F. Bunker..........................................             10,001                     *
Frank Drdek..............................................              2,355                     *
Richard A. Baldridge.....................................                 --                     *
Thomas M. Wittenschlaeger................................                 --                     *
Stephen W. Cable.........................................                 --                     *
All directors and executive officers as a group (15
  persons)...............................................          2,864,323                 34.66
</TABLE>

 
---------------
 *  Less than 1%.
 
(1) Includes the following shares issuable upon the exercise of outstanding
    stock options which are exercisable within 60 days of July 20, 1999 ("Option
    Shares"): Mr. Dankberg -- 38,340 Option Shares; Mr. Hart -- 11,337 Option
    Shares; Dr. Johnson -- 12,669 Option Shares; Mr. Miller -- 10,837 Option
    Shares; Mr. Monahan -- 32,074 Option Shares; Mr. Carter -- 19,203 Option
    Shares; Mr. Lay -- 12,669 Option Shares; Dr. Nash -- 12,669 Option Shares;
    Mr. Paul -- 10,858 Option Shares; Mr. Barrie -- 21,000 Option Shares; and
    Mr. Bunker -- 9,001 Option Shares.
 
(2) Includes (i) 1,466 shares of Common Stock held by Janna C. Carter Education
    Trust, (ii) 1,466 shares of Common Stock held by Michelle L. Carter
    Education Trust, and (iii) 1,466 shares of Common Stock held by Bradley T.
    Carter Education Trust.
 
(3) Includes (i) 15,200 shares of Common Stock held by Lay Charitable Remainder
    Unitrust, and (ii) 137,000 shares of Common Stock held by Lay Living Trust.
 
                                        4

<PAGE>   7
 

                  EXECUTIVE COMPENSATION AND OTHER INFORMATION
 
     The information set forth below is submitted with respect to each of the
Company's executive and other principal officers.
 

<TABLE>
<CAPTION>
              NAME                AGE                             POSITION
              ----                ---                             --------
<S>                               <C>   <C>
Mark D. Dankberg................  44    Chairman of the Board, President and Chief Executive Officer
Richard A. Baldridge............  41    Vice President and Chief Financial Officer
Gregory D. Monahan..............  53    Vice President -- Administration and General Counsel
Thomas E. Carter................  45    Vice President and General Manager of Electronics Systems
                                        Group
Thomas M. Wittenschlaeger.......  41    Vice President and General Manager of Commercial Products
                                        Group
Stephen W. Cable................  44    Vice President -- Strategic Development
Andrew M. Paul..................  43    Vice President -- Commercial Business Development
James P. Collins................  55    Vice President -- Business Development of Electronics
                                        Systems Group
Mark J. Miller..................  39    Vice President, Chief Technical Officer and Secretary
Steven R. Hart..................  45    Vice President -- Engineering and Chief Technical Officer
Robert L. Barrie................  55    Vice President -- Operations
Frank J. Drdek..................  52    Vice President -- Human Resources
</TABLE>

 
     Mr. Dankberg was a founder of the Company and has served as Chairman of the
Board, President and Chief Executive Officer of the Company since its inception
in May 1986. Prior to founding the Company, he was Assistant Vice President of
M/A-COM Linkabit, a manufacturer of satellite telecommunications equipment, from
1979 to 1986 and Communications Engineer for Rockwell International from 1977 to
1979. Mr. Dankberg holds B.S.E.E. and M.E.E. degrees from Rice University.
 
     Mr. Baldridge joined the Company in April 1999 as Vice President and Chief
Financial Officer. Prior to joining the Company, Mr. Baldridge served as Vice
President and General Manager of Raytheon Corporation's Training Systems
Division from January 1998 to April 1999. From June 1994 to December 1998, Mr.
Baldridge served as Chief Operating Officer, Chief Financial Officer and Vice
President -- Finance and Administration for Hughes Information Systems and
Hughes Training Inc., prior to their acquisition by Raytheon in 1997. Mr.
Baldridge's other experience includes various senior financial management roles
within General Dynamics Corporation. Mr. Baldridge holds a B.S. degree in
Business Administration, with an emphasis in Information Systems from New Mexico
State University.
 
     Mr. Monahan has served as Vice President and General Counsel of the Company
since April 1999 and as Vice President, Chief Financial Officer and General
Counsel from December 1988 to April 1999. Prior to joining the Company, Mr.
Monahan was Assistant Vice President of M/A-COM Linkabit from 1978 to 1988. Mr.
Monahan holds a J.D. degree from the University of San Diego and B.S.M.E. and
M.B.A. degrees from the University of California, Berkeley.
 
     Dr. Carter has served as Vice President and General Manager of Electronics
Systems Group since August 1996 and as Vice President of Engineering since
November 1990. Prior to joining the Company, Dr. Carter served in several
positions including Business Area Manager, Program Manager and System
Engineering Department Manager in the Military Electronics and Avionics Division
of TRW Inc. Dr. Carter holds a Ph.D. in Electrical Engineering from the
University of Southern California and B.S.E.E. and M.S.E.E. degrees from Rice
University.
 
     Mr. Wittenschlaeger joined the Company in October 1998 as the Vice
President and General Manager of the Commercial Products Group. Mr.
Wittenschlaeger served as Director, International Finance and Business
Assessment of Hughes Space and Communication ("Hughes") from April 1997 to
October 1998. From April 1994 to March 1997, Mr. Wittenschlaeger held various
positions at Hughes, including Vice President -- Business Development, Assistant
Division Manager, Command and Control Systems Division, and Director -- Business
Assessment and Member of the Technical Staff. Mr. Wittenschlaeger holds a B.S.
in
 
                                        5

<PAGE>   8
 
Electrical Engineering from the U.S. Naval Academy and co-founded UCLA's
Executive Program in Marketing. Mr. Wittenschlaeger is also a graduate of the
Executive Program in Business at UCLA.
 
     Mr. Cable joined the Company in October 1998 as the Vice
President -- Strategic Development. Prior to joining the Company, Mr. Cable
served as Director, Satcom Systems of Rockwell's Collins Government Systems
Division from September 1997 to October 1998. From October 1994 to August 1997,
Mr. Cable held various positions with Rockwell International and Rockwell
Communications Systems Division, including Director of Advanced Programs,
Director of Engineering, Acting General Manager, Vice President Rockwell Global
Wireless business initiative and Chairman of the Strategic Planning Council for
the Communications Systems Division. Mr. Cable holds both a B.S.E.E. and a
M.S.E.E.. in Electrical Engineering from Rice University.
 
     Mr. Paul has served as Vice President -- Commercial Business Development
since March 1997 and as Vice President -- Commercial Operations of the Company
since March 1993. Prior to joining the Company, Mr. Paul served as Vice
President and General Manager of the Western Region of Evernet Systems, Inc., a
computer network integrator, from 1992 to 1993. Previously, Mr. Paul was Vice
President of Sales at ComStream Corp. from 1989 to 1992. Mr. Paul holds a B.A.
degree from Stanford University.
 
     Mr. Collins has served as Vice President -- Business Development of
Electronics Systems Group since March 1997 and Vice President of Business
Development since December 1988. Prior to joining the Company, Mr. Collins was
Assistant Vice President of M/A-COM Linkabit from 1982 to 1988. Mr. Collins was
a Director of Marketing while at General Dynamics from 1976 to 1982 and prior to
that served on active duty in the U.S. Army for ten years. Mr. Collins currently
serves in the U.S. Army Reserve as a Brigadier General. He holds a B.A. degree
from Hofstra University and an M.S. degree in Geodetic Science from Ohio State
University.
 
     Mr. Miller was a founder of the Company and has served as Vice President
and Chief Technical Officer of the Company since 1993 and as Engineering Manager
since 1986. Prior to joining the Company, Mr. Miller was a Staff Engineer at
M/A-COM Linkabit from 1983 to 1986. Mr. Miller holds a B.S.E.E. degree from the
University of California, San Diego and a M.S.E.E. degree from the University of
California, Los Angeles.
 
     Mr. Hart was a founder of the Company and has served as Vice
President -- Engineering and Chief Technical Officer since March 1997, as Vice
President and Chief Technical Officer since 1993 and as Engineering Manager
since 1986. Prior to joining the Company, Mr. Hart was a Staff Engineer and
Manager at M/A-COM Linkabit from 1982 to 1986. Mr. Hart holds a B.S. in
Mathematics from the University of Nevada, Las Vegas and a M.A. in Mathematics
from the University of California, San Diego.
 
     Mr. Barrie joined the Company in January 1997 as Vice President of
Operations. Prior to joining the Company, Mr. Barrie was Vice President of
Operations at Pacific Communications Sciences Inc. from 1987 to 1996. Mr. Barrie
served in several positions at OAK Communications, Inc. from 1980 to 1986
including Vice President -- Program Management. Mr. Barrie was a Vice President
at LaPointe Industries from 1969 to 1980. Mr. Barrie holds a B.S. degree in
Business from Charter Oak State College and a M.B.A. from National University.
 
     Mr. Drdek joined the Company in February 1998 as the Vice President of
Human Resources. Prior to joining the Company, Mr. Drdek served as Vice
President of Human Resources at Proxima Corporation from January 1992 to
February 1998. Mr. Drdek's previous experience includes serving as Vice
President of Human Resources for Topaz/Square -- D Corporation and Director of
Human Resources for NCR Corporation and Caterpillar Corporation. Mr. Drdek holds
a B.S. degree in Business Administration from San Diego State University and a
business teaching credential from Palomar College.
 
                                        6

<PAGE>   9
 
EXECUTIVE COMPENSATION
 
     The following table sets forth certain summary information concerning
compensation paid by the Company to or on behalf of the Company's Chief
Executive Officer and each of the Company's other four most highly compensated
executive officers in fiscal 1999, 1998, and 1997. Unless otherwise indicated,
all references in this Proxy Statement to a fiscal year refer to the fiscal year
ending on March 31. For example, references to fiscal 1999 refer to the fiscal
year beginning on April 1, 1998 and ending on March 31, 1999.
 
                           SUMMARY COMPENSATION TABLE
                                FOR FISCAL 1999
 

<TABLE>
<CAPTION>
                                                                           LONG-TERM
                                                                          COMPENSATION
                                                                             AWARDS
                                                                          ------------
                                                        FISCAL YEAR        NUMBER OF
                                                        COMPENSATION       SECURITIES
                                            FISCAL   ------------------    UNDERLYING       ALL OTHER
                   NAME                      YEAR     SALARY     BONUS      OPTIONS      COMPENSATION(1)
                   ----                     ------   --------   -------   ------------   ---------------
<S>                                         <C>      <C>        <C>       <C>            <C>
Mark D. Dankberg..........................   1999    $241,300   $35,000      15,000          $4,995
  Chairman, President                        1998     218,000    81,000      15,000           4,969
  and CEO                                    1997     190,865    35,000      14,670           4,969
Thomas E. Carter..........................   1999     170,000    17,000       7,500           4,971
  Vice President -- General Manager          1998     159,600    24,400       4,000           4,846
  of Electronics Systems Group               1997     140,000    10,000       2,934           4,846
Robert L. Barrie..........................   1999     155,000    14,000       5,000           6,417
  Vice President -- Operations               1998     140,000    15,000          --              --
                                             1997      28,194        --      50,000              --
Gregory D. Monahan........................   1999     151,400     4,000       2,000           4,833
  Vice President and                         1998     137,599    10,000       2,000           4,837
  General Counsel                            1997     130,998     8,000      11,003           4,837
Steven R. Hart............................   1999     145,000     8,000       4,000           4,901
  Vice President -- Engineering and          1998     133,100    20,000       4,000           4,856
  Chief Technical Officer                    1997     121,000     8,000       3,668           4,716
</TABLE>

 
---------------
(1) All other compensation consists of Company matching 401(k) contributions.
 
     The following table sets forth certain summary information concerning
individual grants of stock options made during fiscal 1999 to each of the
Company's executive officers named in the Summary Compensation Table.
 
                       OPTION GRANTS IN LAST FISCAL YEAR
 

<TABLE>
<CAPTION>
                                                                                            POTENTIAL REALIZABLE
                                                    INDIVIDUAL GRANTS                         VALUE AT ASSUMED
                                 --------------------------------------------------------      ANNUAL RATES OF
                                 NUMBER OF       % OF TOTAL                                      STOCK PRICE
                                 SECURITIES       OPTIONS                                     APPRECIATION FOR
                                 UNDERLYING      GRANTED TO      EXERCISE OR                   OPTION TERM(1)
                                  OPTIONS       EMPLOYEES IN     BASE PRICE    EXPIRATION   ---------------------
             NAME                 GRANTED     FISCAL YEAR 1999    PER SHARE       DATE         5%          10%
             ----                ----------   ----------------   -----------   ----------   ---------   ---------
<S>                              <C>          <C>                <C>           <C>          <C>         <C>
Mark D. Dankberg...............    15,000           5.65%          $17.083      6/15/08     $128,432    $316,334
Thomas E. Carter...............     7,500           2.82            15.530      6/15/08       34,249     158,167
Robert L. Barrie...............     5,000           1.88            15.530      6/15/08       42,811     105,445
Gregory D. Monahan.............     2,000           0.75            15.530      6/15/08       17,124      42,178
Steven R. Hart.................     4,000           1.51            15.530      6/15/08       64,216      84,356
</TABLE>

 
---------------
(1) These amounts represent assumed rates of appreciation in the price of the
    Common Stock during the terms of the options in accordance with rates
    specified in applicable federal securities regulations. Actual gains, if
    any, on stock option exercises will depend on the future price of the Common
    Stock and overall
 
                                        7

<PAGE>   10
 
    stock market conditions. There is no representation that the rates of
    appreciation reflected in this table will be achieved.
 
     The following table sets forth certain information concerning exercises of
stock options by each of the Company's executive officers named in the Summary
Compensation Table during fiscal 1999, and the number of options and value of
unexercised options held by each such person at March 31, 1999.
 
                AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                       AND FISCAL YEAR-END OPTION VALUES
 

<TABLE>
<CAPTION>
                                                             NUMBER OF SECURITIES          VALUE OF UNEXERCISED
                                  NUMBER OF                 UNDERLYING UNEXERCISED             IN-THE-MONEY
                                   SHARES                     OPTIONS AT YEAR-END         OPTIONS AT YEAR-END(1)
                                  ACQUIRED      VALUE     ---------------------------   ---------------------------
             NAME                ON EXERCISE   REALIZED   EXERCISABLE   UNEXERCISABLE   EXERCISABLE   UNEXERCISABLE
             ----                -----------   --------   -----------   -------------   -----------   -------------
<S>                              <C>           <C>        <C>           <C>             <C>           <C>
Mark D. Dankberg...............       --            --      27,939         59,340        $154,739       $ 19,540
Thomas E. Carter...............       --            --      15,490         26,536          99,159          6,804
Robert L. Barrie...............       --            --      20,000         55,000              --             --
Gregory D. Monahan.............      550        $4,950      28,981         35,614          53,031        163,070
Steven R. Hart.................       --            --       7,570         15,336          17,058         26,518
</TABLE>

 
---------------
(1) The dollar values have been calculated by determining the difference between
    the fair market value of the securities underlying the options and the
    exercise price at March 31, 1999.
 
COMPENSATION PLANS
 
     401(k) Plan. The Company has established a tax-qualified employee savings
and retirement plan (the "401(k) Plan") effective January 1990 covering all
employees who have been employed by the Company for at least 90 days and who are
at least 21 years of age. Pursuant to the 401(k) Plan, employees may elect to
reduce their current compensation by not less than 1.0% nor more than 15.0% of
eligible compensation and have the amount of such reduction contributed to the
401(k) Plan. The 401(k) Plan permits, but does not require, additional cash
contributions to the 401(k) Plan by the Company. The trustee under the 401(k)
Plan invests the assets of the 401(k) Plan in designated investment options. The
401(k) Plan is intended to qualify under Section 401 of the Internal Revenue
Code (the "Code") so that contributions to the 401(k) Plan, and income earned on
plan contributions, are not taxable to employees until withdrawn from the 401(k)
Plan, and so that contributions by the Company are deductible by the Company
when made for income tax purposes.
 
     Employee Stock Purchase Plan. The Company has established the ViaSat, Inc.
Employee Stock Purchase Plan (the "Purchase Plan") to assist employees of the
Company in acquiring a stock ownership interest in the Company and to encourage
them to remain in the employment of the Company. The Purchase Plan is intended
to qualify under Section 423 of the Code. The Purchase Plan permits eligible
employees to purchase Common Stock at a discount through payroll deductions
during specified six-month offering periods. The Purchase Plan is administered
by the Compensation Committee. Currently, a maximum of 250,000 shares of Common
Stock are authorized for issuance under the Purchase Plan. If Proposal 2 below
is approved, the shares of Common Stock authorized for issuance under the
Purchase Plan will be increased to 500,000 shares. For a discussion of the
material terms of the Purchase Plan, see "Proposal 2: Amendments to the Purchase
Plan." As of July 1, 1999, an aggregate of 133,986 shares of Common Stock at
prices ranging from $7.65 to $11.74 were issued under the Purchase Plan.
 
     1993 Stock Option Plan. In 1993, the Company adopted the ViaSat, Inc. 1993
Stock Option Plan (the "1993 Stock Option Plan") to enable key employees,
consultants and non-employee directors of the Company to acquire a proprietary
interest in the Company, and thus to create in such persons an increased
interest in and a greater concern for the welfare of the Company. The 1993 Stock
Option Plan provided for aggregate option grants of up to 733,500 shares. As of
July 1, 1999, options to purchase an aggregate of 171,661 shares of Common Stock
at prices ranging from $0.48 to $4.50 were outstanding under the 1993 Stock
Option Plan. No additional grants will be made under the 1993 Stock Option Plan.
 
                                        8

<PAGE>   11
 
     1996 Equity Participation Plan. In November, 1996 the Company adopted The
1996 Equity Participation Plan of ViaSat, Inc. (the "Equity Plan") to update and
replace the 1993 Stock Option Plan. The Equity Plan provides for the grant to
executive officers, other key employees, consultants and non-employee directors
of the Company of a broad variety of stock-based compensation alternatives such
as nonqualified stock options, incentive stock options, restricted stock and
performance awards. The Equity Plan provides for aggregate award grants of up to
1,250,00 shares. As of July 1, 1999, options to purchase an aggregate of 788,932
shares of Common Stock at prices ranging from $7.38 to $19.813 were outstanding
under the Equity Plan.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION.
 
     During fiscal 1999, the Compensation Committee was comprised of Messrs.
Nash and Bunker. No interlocking relationship exists between any member of the
Compensation Committee and any member of any other company's board of directors
or compensation committee.
 
R
EPORT ON EXECUTIVE COMPENSATION
 
     The Compensation Committee (the "Committee") is responsible for
administering the Company's compensation policies and practices and approves all
elements of compensation for executive officers. The Committee reports regularly
to the Board of Directors on its activities. In general, the compensation
policies adopted by the Committee were designed to: (1) attract and retain
executives capable of leading the Company to meet its business objectives and
(2) motivate the Company's executives to enhance long-term stockholder value.
 
     EXECUTIVE OFFICER COMPENSATION
 
     The Company's executive compensation program is comprised of base salary,
annual cash incentive bonus and long-term incentive compensation in the form of
stock option grants at current market prices.
 
     The Company's compensation program for executive officers is designed to
provide a total compensation level (including both annual and long-term
incentives) that is competitive with surveyed companies. For executive officers
recently recruited by the Company, annual compensation rates and long-term
incentive awards reflect amounts necessary to attract them to the Company. The
compensation program is benchmarked by using surveys of companies in the high
technology industry with similar revenues and/or prospects. These companies,
which are representative of the firms the Company competes with for executive
talent and have jobs similar to those at the Company in magnitude, complexity
and scope of responsibility, form the basis for the survey group used by the
Committee.
 
     COMPONENTS OF EXECUTIVE COMPENSATION
 
     BASE SALARY is established by the Committee based on an executive's job
responsibilities, level of experience, individual performance and contribution
to the business, and information obtained from surveys. The Committee believes
that the executives' base salaries are at competitive levels relative to the
various markets from which the Company attracts its executive talent.
 
     ANNUAL CASH INCENTIVE BONUS is established by the Committee at the end of
the fiscal year and is based on the Company's performance, individual
performance, and compensation surveys. Bonuses awarded in prior years are also
taken into consideration. The bonuses are at risk and are not arithmetically
derived using a bonus formula.
 
     LONG-TERM INCENTIVES include awards of stock options, restricted stock, and
performance awards. The objective for the awards is to align closely executive
interests with the longer term interests of stockholders. These awards, which
are at risk and dependent on the creation of incremental stockholder value or
the attainment of cumulative financial targets over several years, represent a
significant portion of the total compensation opportunity provided for the
executive officers. Award sizes are based on individual performance, level of
responsibility, the individual's potential to make significant contributions to
the Company, and
 
                                        9

<PAGE>   12
 
award levels at companies in the survey group. Long-term incentives granted in
prior years are also taken into consideration. For fiscal 1999, the Committee
determined that the only form of long-term incentive awards would be stock
options. There were no restricted stock or performance awards granted during
fiscal 1999.
 
     COMPENSATION FOR THE CHAIRMAN AND CHIEF EXECUTIVE OFFICER
 
     Mr. Dankberg continues to provide outstanding personal leadership as the
Chief Executive Officer of the Company. Under Mr. Dankberg's direction, the
Company has achieved thirteen consecutive years of internally generated revenue
growth and twelve consecutive years of profitability, and is well positioned to
benefit from its successes in developing and deploying products which utilize
Demand Assigned Multiple Access satellite networking technology. The Company's
fiscal 1999 achievements in revenue growth, order backlog, product development
and shipments were consistent with the Company's objectives. During fiscal 1999,
Mr. Dankberg earned a base salary of $241,300. In light of the leadership he
demonstrated during the year, in June 1998, the Committee granted Mr. Dankberg a
stock option to purchase 15,000 shares of Common Stock at $17.083 per share
(110% of the fair market value at the time of grant), and the Committee
determined that Mr. Dankberg should receive a $35,000 bonus.
 
     DEDUCTIBILITY OF COMPENSATION IN EXCESS OF $1 MILLION PER YEAR
 
     Section 162(m) of the Code, enacted in 1993, generally disallows a tax
deduction to public companies for compensation in excess of $1 million paid to a
company's Chief Executive Officer and any of its four other most highly
compensated executive officers. Qualifying performance-based compensation is not
subject to the deduction limit if certain requirements are met. For 1999 and
2000, the Company does not anticipate that there will be nondeductible
compensation for the Company positions in question. The Committee plans to
continue to review the matter for 2000 and future years in order to determine
the extent of possible modification to the Company's compensation arrangements.
 
                                          Compensation Committee
 
                                          Jeffrey M. Nash
                                          James W. Bunker
 
                                       10

<PAGE>   13
 
                               PERFORMANCE GRAPH
 
     The following graph shows the value of an investment of $100 in cash on
December 3, 1996 in (1) the Company's Common Stock, (2) The NASDAQ
Telecommunications Index and (3) The NASDAQ Composite Index.
 
                     COMPARISON OF CUMULATIVE TOTAL RETURNS
                             PERFORMANCE REPORT FOR
                                  VIASAT, INC.
 

<TABLE>
<CAPTION>
                                                         VIASAT               NASDAQ TELECOM INDEX       NASDAQ COMPOSITE INDEX
                                                         ------               --------------------       ----------------------
<S>                                             <C>                         <C>                         <C>
'12/3/96'                                                100.00                      100.00                      100.00
'12/31/96'                                               100.00                      102.39                       99.32
'3/31/97'                                                104.17                       95.71                       93.99
'6/30/97'                                                161.11                      117.95                      110.94
'9/30/97'                                                230.56                      137.29                      129.69
'12/31/97'                                               151.39                      145.40                      120.81
'3/31/98'                                                197.22                      184.15                      141.23
'6/30/98'                                                213.19                      195.82                      145.77
'9/30/98'                                                 91.67                      172.40                      130.31
'12/31/98'                                               111.81                      237.56                      168.69
'3/31/99'                                                 99.31                      293.23                      189.36
</TABLE>

 
                                       11

<PAGE>   14
 

                                  PROPOSAL 2:
 
                        AMENDMENTS TO THE PURCHASE PLAN
 
     At the Annual Meeting, the stockholders of the Company will be asked to
consider and vote upon a proposal to approve certain amendments to the Purchase
Plan. The Purchase Plan was initially adopted by the Company's Board of
Directors and stockholders in October 1996.
 
DESCRIPTION OF THE PURCHASE PLAN
 
     General Nature and Purpose. The Purchase Plan was adopted to (1) provide a
means by which employees of the Company could be given an opportunity to
purchase stock of the Company and (2) assist employees of the Company to provide
for their future security and to encourage them to remain employees of the
Company. Employees make such purchases by participation in the regular offering
periods from which they may withdraw prior to the end of the offering period.
 
     Administration. The Purchase Plan is administered by the Compensation
Committee of the Board of Directors.
 
     Eligibility. Only employees may participate in the Purchase Plan. For this
purpose, an "employee" is any person who is regularly employed at least 20 hours
per week and five months per calendar year by the Company or any of its
majority-owned subsidiaries. No employee shall be permitted to subscribe for
shares under the Purchase Plan if, immediately upon purchase of the shares, the
employee would own 5% or more of the total combined voting power or value of all
classes of stock of the Company or its subsidiaries (including stock issuable
upon exercise of options held by him or her), nor shall any employee be granted
an option that would permit him or her to buy more than $25,000 worth of stock
under the Purchase Plan in any calendar year. As of July 1, 1999 (the last
enrollment date), there were 317 employees eligible to participate in the
Purchase Plan, of whom 158 were participants.
 
     Offering Period. There is generally one offering under the Purchase Plan
during each six month period commencing January 1 and July 1 of each year of the
Purchase Plan. The current offering will end on December 31, 1999. The first day
of an offering period is referred to as the "Date of Grant." The last day of an
offering period is referred to as the "Date of Exercise."
 
     Purchase Price. The purchase price per share at which shares will be sold
in an offering under the Purchase Plan is the lower of (1) 85% of the fair
market value of a share of Common Stock on the Date of Exercise or (2) 85% of
the fair market value of a share of Common Stock on the Date of Grant. The fair
market value of the Common Stock on a given date is the closing price as
reported on the Nasdaq National Market.
 
     Payment of Purchase Price; Payroll Deductions. The purchase price of the
shares is accumulated by payroll deductions over the offering period. The
Purchase Plan provides that the aggregate of these payroll deductions during the
offering period will not exceed 5% of each employee's base salary during the
offering period. All payroll deductions made for a participant are credited to
the participant's account under the Purchase Plan and are included with the
general funds of the Company. Funds received upon sales of stock under the
Purchase Plan are used for general corporate purposes.
 
     Withdrawal. A participant may terminate his or her interest in a given
offering by signing and delivering to the Company a notice of withdrawal from
the Purchase Plan at least ten days prior to the Date of Exercise of the
applicable offering period.
 
     Termination of Employment. Termination of a participant's employment for
any reason, including retirement, cancels his or her participation in the
Purchase Plan immediately. In such event the payroll deductions credited to the
participant's account will be returned without interest to such participant. If
the employment of a participant is terminated by the participant's death, the
executor of such participant's will or the administrator of such participant's
estate may request payment of the balance in the participant's account, in which
event the payroll deductions credited to the participant's account will be
returned without interest to such participant's heirs. If the Company does not
receive such notice prior to the Date of Exercise, the
                                       12

<PAGE>   15
 
participant's option to purchase shares under the Purchase Plan shall be deemed
to have been exercised on the Date of Exercise.
 
     Capital Changes. In the event of any changes in the capitalization of the
Company, such as stock splits, stock dividends, recapitalizations or
combinations, resulting in an increase or decrease in the number of outstanding
shares of Common Stock, appropriate adjustments will be made by the Company in
the shares subject to purchase and in the price per share under the Purchase
Plan.
 
     Effect of Liquidation, Dissolution, Sale of Assets or Merger. In the event
of liquidation, dissolution, merger, consolidation or sale of all or
substantially all of the assets of the Company, the Date of Exercise shall be
the business day immediately preceding the effective date of such event, unless
the Committee provides for the assumption or substitution of such options to
purchase shares of Common Stock under the Purchase Plan.
 
     Amendment and Termination of the Purchase Plan. The Purchase Plan may be
wholly or partially amended or otherwise modified, suspended or terminated at
any time or from time to time by the Board of Directors. However, without
approval of the stockholders of the Company, the Purchase Plan may not be
amended to (1) change the number of shares of Common Stock reserved for issuance
under the Purchase Plan, (2) decrease the purchase price of Common Stock issued
under the Purchase Plan below a price computed in accordance with the applicable
provisions of the Purchase Plan, (3) alter requirements for eligibility to
participate in the Purchase Plan, or (4) amend the Purchase Plan in any manner
which would cause such plan to no longer be an "employee stock purchase plan"
within the meaning of the Code.
 
     Tax Information. The Purchase Plan, and the right of participants to make
purchases thereunder, is intended to qualify under the provisions of Sections
421 and 423 of the Code. Under these provisions, no income will be taxable to a
participant until the shares purchased under the Purchase Plan are sold or
otherwise disposed. Upon sale or other disposition of the shares, the
participant will generally be subject to tax and the amount of the tax will
depend upon the holding period. If the shares are sold or otherwise disposed of
more than two years from the Date of Grant, the participant will recognize
ordinary income measured as the lesser of (a) the excess of the fair market
value of the shares at the time of such sale or disposition over the purchase
price, or (b) an amount equal to 15% of the fair market value of the shares as
of the Date of Grant. Any additional gain will be treated as long-term capital
gain. If the shares are sold or otherwise disposed of before the expiration of
this holding period, the participant will recognize ordinary income generally
measured as the excess of the fair market value of the shares on the date the
shares are purchased over the purchase price. Any further gain or any loss on
such sale or disposition will be treated as capital gain or loss. The Company
generally is not entitled to a deduction for amounts taxed as ordinary income or
capital gain to a participant, except to the extent of ordinary income
recognized by participants upon a sale or disposition of shares prior to the
expiration of the holding period described above and subject to the limitation
on deductibility set forth in Section 162(m) of the Code.
 
     THE FOREGOING IS ONLY A SUMMARY OF THE EFFECT OF FEDERAL INCOME TAXATION
LAWS UPON THE PARTICIPANT AND THE COMPANY WITH RESPECT TO THE SHARES PURCHASED
UNDER THE PURCHASE PLAN. REFERENCE SHOULD BE MADE TO THE APPLICABLE PROVISIONS
OF THE CODE. IN ADDITION, THE SUMMARY DOES NOT DISCUSS THE TAX CONSEQUENCES OF A
PARTICIPANT'S DEATH OR THE INCOME TAX LAWS OF ANY STATE OR FOREIGN COUNTRY IN
WHICH THE PARTICIPANT MAY RESIDE.
 
                                       13

<PAGE>   16
 
     Participation in the Purchase Plan. Participation in the Purchase Plan is
voluntary and is dependent on each eligible employee's election to participate
and his or her respective determination as to the level of payroll deductions.
Accordingly, future purchases under the Purchase Plan are not determinable. The
following table sets forth information with respect to the shares purchased
during the 1999 fiscal year by (1) the executive officers named in the Summary
Compensation Table above, (2) all current executive officers as a group, and (3)
all other employees as a group who participated in the Purchase Plan.
 

<TABLE>
<CAPTION>
                                                         NUMBER OF SHARES      AGGREGATE
             NAME (OR GROUP) AND POSITION                   PURCHASED        PURCHASE PRICE
             ----------------------------                ----------------    --------------
<S>                                                      <C>                 <C>
Mark D. Dankberg.......................................           --                   --
  Chairman, President and CEO
Thomas E. Carter.......................................          852          $  8,371.59
  Vice President -- General Manager of
  Electronics Systems Group
Robert L. Barrie.......................................          773             7,561.97
  Vice President -- Operations
Gregory D. Monahan.....................................          755             7,392.06
  Vice President and General Counsel
Steven R. Hart.........................................           --                   --
  Vice President -- Engineering and
  Chief Technical Officer
All current participating executive officers as a group
  (12 persons).........................................        2,380            23,325.62
All other employees as a group (155 persons)...........       50,704           501,464.89
</TABLE>

 
PROPOSED AMENDMENTS TO THE PURCHASE PLAN
 
  Increase in Authorized Shares
 
     A total of 250,000 shares of Common Stock are currently authorized for
issuance under the Purchase Plan. The Board of Directors recommends an amendment
to the Purchase Plan to increase the number of shares available for issuance to
500,000.
 
     As of July 1, 1999, an aggregate of 133,986 shares of Common Stock had been
issued under the Purchase Plan. Although 116,014 shares of Common Stock remain
available for issuance under the Purchase Plan, the Company anticipates that
such shares will only permit the Company to continue the Purchase Plan through
the middle of fiscal 2001. The Board of Directors believes that increasing the
number of shares available for sale under the Purchase Plan is necessary in
order for the Compensation Committee to have sufficient flexibility to carry out
its responsibilities to (1) administer compensation programs that attract,
motivate and retain the employees of the Company and (2) administer such
programs in a manner that benefits the long-term interests of the Company and
its stockholders.
 
  Change in Vote Required to Amend the Purchase Plan
 
     The Purchase Plan requires the affirmative vote of a majority of the
outstanding shares of Common Stock entitled to vote at a meeting of the
stockholders to approve amendments to (1) change the number of shares of Common
Stock reserved for issuance under the Purchase Plan, (2) decrease the purchase
price of Common Stock issued under the Purchase Plan below a price computed in
accordance with the applicable provisions of the Purchase Plan, (3) alter
requirements for eligibility to participate in the Purchase Plan, or (4) amend
the Purchase Plan in any manner which would cause such plan to no longer be an
"employee stock purchase plan" within the meaning of the Code. The Code and
applicable federal tax regulations, which govern the Purchase Plan, require the
affirmative vote of a majority of the votes cast at a duly held meeting of
stockholders to amend "employee stock purchase plans" such as the Purchase Plan.
In order to make such voting requirement consistent with applicable law, the
Board of Directors recommends an amendment to the Purchase Plan to change the
vote required to make such amendments to a majority of the votes cast at a duly
held meeting of the Company's stockholders at which a quorum is present.
 
                                       14

<PAGE>   17
 
VOTED REQUIRED; RECOMMENDATION OF THE BOARD OF DIRECTORS
 
     The affirmative vote of a majority of the outstanding shares of Common
Stock entitled to vote at the Annual Meeting is required to approve the
Amendments to the Purchase Plan. An abstention or non-vote is not an affirmative
vote and, therefore, will have the same effect as a vote against the Amendments.
 
     THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE
F
OR THE AMENDMENTS TO THE PURCHASE PLAN. PROXIES SOLICITED BY THE BOARD OF
DIRECTORS WILL BE SO VOTED UNLESS STOCKHOLDERS SPECIFY OTHERWISE ON THEIR PROXY
CARDS.
 
                   RELATIONSHIP WITH INDEPENDENT ACCOUNTANTS
 
     The Company's financial statements for the fiscal year ended March 31, 1999
have been examined by PricewaterhouseCoopers LLP. Representatives of
PricewaterhouseCoopers LLP are expected to be available at the Annual Meeting to
respond to appropriate questions and to make a statement if they desire to do
so. The Company will select independent accountants for the current year
sometime after the Annual Meeting.
 

                            SECTION 16(a) REPORTING
 
     Under Section 16(a) of the Securities Exchange Act of 1934, as amended,
(the "Exchange Act"), directors, executive officers and beneficial owners of 10%
or more of the Common Stock ("Reporting Persons") are required to report to the
Securities and Exchange Commission on a timely basis the initiation of their
status as a Reporting Person and any changes with respect to their beneficial
ownership of the Common Stock. Based solely on its review of such forms received
by it, or written representations from certain Reporting Persons that no such
forms were required, the Company has determined that no Reporting Persons known
to it were delinquent with respect to his or her reporting obligations as set
forth in Section 16(a) of the Exchange Act.
 
 
                            STOCKHOLDER PROPOSALS
 
     Any proposal of a stockholder of the Company intended to be presented at
the next Annual Meeting of Stockholders of the Company must be received by the
Secretary of the Company not later than April 15, 2000 to be considered for
inclusion in the Company's proxy statement and form of proxy relating to that
meeting. In addition, if the Company has not received notice by June 29, 2000 of
any matter a stockholder intends to propose for a vote at the next Annual
Meeting of Stockholders, then a proxy solicited by the Board of Directors may be
voted on such matter in the discretion of the proxy holder, without discussion
of the matter in the proxy statement soliciting such proxy and without such
matter appearing as a separate item on the proxy card.
 
                                 OTHER MATTERS
 
     The Company does not know of any business other than that described herein
which will be presented for consideration or action by the stockholders at the
meeting. If, however, any other business shall properly come before the meeting,
shares represented by proxies will be voted in accordance with the best judgment
of the persons named therein or their substitutes.
 
                                       15

<PAGE>   18
 
                         ANNUAL REPORT TO STOCKHOLDERS
 
     The Company's Annual Report to Stockholders is being mailed with this Proxy
Statement to stockholders of record on July 20, 1999. Upon request, the Company
will furnish the Annual Report to any stockholder.
 
          ALL STOCKHOLDERS ARE URGED TO COMPLETE, SIGN AND RETURN THE
           ACCOMPANYING ENDORSED PROXY CARD IN THE ENCLOSED ENVELOPE.
 
                                        BY ORDER OF THE BOARD OF DIRECTORS
                                        /s/ Mark D. Dankberg
                                        Mark D. Dankberg
                                        Chairman of the Board
                                        and Chief Executive Officer
 
Carlsbad, California
July 29, 1999
 
                                       16

<PAGE>   19
PROXY                                                                      PROXY

                                  VIASAT, INC.

                    PROXY FOR ANNUAL MEETING OF STOCKHOLDERS
                               SEPTEMBER 15, 1999

     The undersigned stockholder(s) of VIASAT, INC. (the "Company") hereby
constitutes and appoints Mark D. Dankberg and Greg D. Monahan, and each of
them, attorneys and proxies of the undersigned, each with power of
substitution, to attend, vote and act for the undersigned at the Annual Meeting
of Stockholders of the Company to be held on September 15, 1999, and at any
adjournment or postponement thereof, according to the number of shares of
common stock of the Company which the undersigned may be entitled to vote, and
with all powers which the undersigned would possess if personally present, as
follows:

     THIS PROXY WILL BE VOTED FOR THE ELECTION AS DIRECTORS OF THE NOMINEES SET
FORTH IN THE NOTICE OF ANNUAL MEETING AND PROXY STATEMENT, AND FOR APPROVAL OF
THE AMENDMENTS TO THE PURCHASE PLAN AS DESCRIBED IN THE PROXY STATEMENT, UNLESS
THE CONTRARY IS INDICATED IN THE APPROPRIATE PLACE.

                          (continued on reverse side)

-------------------------------------------------------------------------------
                              FOLD AND DETACH HERE

                                        

<PAGE>   20
                                  ViaSat, Inc.
  PLEASE MARK VOTE IN OVAL IN THE FOLLOWING MANNER USING DARK INK ONLY. [MARK]

[                                                                             ]



<TABLE>
<CAPTION>

<S>                                <C>  <C>       <C>            <C>

1.   Election of Directors:        For  Withheld  Abstain        In their discretion, the proxies are authorized to vote upon such
                                                                 other business as may properly come before the meeting.
     Mark D. Dankberg              [ ]     [ ]
                                                                 The undersigned revokes any prior proxy at such meeting and
     James F. Bunker               [ ]     [ ]                   ratifies all that said attorneys and proxies, or any of them, may
                                                                 lawfully do by virtue hereof. Receipt of the Notice of Annual
2.   Approval of the Amendments    [ ]     [ ]      [ ]          Meeting of Stockholders and Proxy Statement is hereby acknowledged.
     to Purchase Plan, as 
     described in the accompanying
     Proxy Statement.

</TABLE>

                                                 Dated: __________________ 1999

                                                 ______________________________

                                                 ______________________________
                                                 (Signature(s) of stockholders)

                                                 Please sign exactly as name
                                                 appears herein. When shares are
                                                 held by joint tenants, both
                                                 should sign; when signing as an
                                                 attorney, executor,
                                                 administrator, trustee or
                                                 guardian, give full title as
                                                 such. If a corporation, sign in
                                                 full corporate name by
                                                 President or other authorized
                                                 officer. If a partnership, sign
                                                 in partnership name by
                                                 authorized partner.


  THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF VIASAT, INC.
                 PLEASE COMPLETE, SIGN, DATE AND MAIL PROMPTLY
                     IN THE POSTAGE-PAID ENVELOPE ENCLOSED.
-------------------------------------------------------------------------------
                           *  FOLD AND DETACH HERE  *