THERMOTREX CORP
DEF 14A, 1999-02-10
X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS
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<PAGE>
 
 
                          SCHEDULE 14A INFORMATION
 
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 (S)240.14a-11(c) or (S)240.14a-12

 
                            THERMO TREX CORPORATION
              ------------------------------------------------
              (Name of Registrant as Specified In Its Charter)
 

              ------------------------------------------------
                 (Name of Person(s) Filing Proxy Statement)
 

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>
 
[THERMOTREX CORPORATION LOGO] 
10455 Pacific Center Court, San Diego, CA 92121
 
                                                               February 5, 1999
 
Dear Stockholder:
 
  The enclosed Notice calls the 1999 Annual Meeting of the Stockholders of
ThermoTrex Corporation. I respectfully request all Stockholders to attend this
meeting, if possible.
 
  Our Annual Report for the fiscal year ended October 3, 1998, is enclosed. I
hope you will read it carefully. Feel free to forward any questions you may
have if you are unable to be present at the meeting.
 
  Enclosed with this letter is a proxy authorizing three officers of the
Corporation to vote your shares for you if you do not attend the meeting.
Whether or not you are able to attend the meeting, I urge you to complete your
proxy and return it to our transfer agent, American Stock Transfer and Trust
Company, in the enclosed addressed, postage-paid envelope, as a quorum of the
Stockholders must be present at the meeting, either in person or by proxy.
 
  I would appreciate your immediate attention to the mailing of this proxy.
 
                                          Yours very truly,
 
                                          /s/ Gary S. Weinstein

                                          Gary S. Weinstein
                                          Chairman and Chief Executive Officer
<PAGE>
 
[THERMOTREX CORPORATION LOGO] 
10455 Pacific Center Court, San Diego, CA 92121
 
                                                               February 5, 1999
 
To the Holders of the Common Stock of
THERMOTREX CORPORATION
 
                           NOTICE OF ANNUAL MEETING
 
  The 1999 Annual Meeting of the Stockholders of ThermoTrex Corporation (the
"Corporation") will be held on Thursday, March 11, 1999, at 10:00 a.m. at the
Westin Hotel, 70 Third Avenue, Waltham, Massachusetts 02454. The purpose of
the meeting is to consider and take action upon the following matters:
 
    1. Election of eight directors.
 
    2. Such other business as may properly be brought before the meeting and
  any adjournment thereof.
 
  The transfer books of the Corporation will not be closed prior to the
meeting, but, pursuant to appropriate action by the board of directors, the
record date for the determination of the Stockholders entitled to receive
notice of and to vote at the meeting is January 20, 1999.
 
  The by-laws require that the holders of a majority of the stock issued and
outstanding and entitled to vote be present or represented by proxy at the
meeting in order to constitute a quorum for the transaction of business. It is
important that your stock be represented at the meeting regardless of the
number of shares you may hold. Whether or not you are able to be present in
person, please sign and return promptly the enclosed proxy in the accompanying
envelope, which requires no postage if mailed in the United States.
 
  This notice, the proxy and proxy statement enclosed herewith are sent to you
by order of the board of directors.
 
                                          Sandra L. Lambert
                                          Secretary
<PAGE>
 
                                PROXY STATEMENT
 
  The enclosed proxy is solicited by the board of directors of ThermoTrex
Corporation (the "Corporation") for use at the 1999 Annual Meeting of the
Stockholders (the "Meeting") to be held on Thursday, March 11, 1999, at 10:00
a.m. at the Westin Hotel, 70 Third Avenue, Waltham, Massachusetts 02454, and
any adjournment thereof. The mailing address of the executive offices of the
Corporation is 10455 Pacific Center Court, San Diego, CA 92121. This proxy
statement and the enclosed proxy were first furnished to Stockholders of the
Corporation on or about February 9, 1999.
 
                               VOTING PROCEDURES
 
  The board of directors intends to present to the Meeting the election of
eight directors, constituting the entire board of directors.
 
  The representation in person or by proxy of a majority of the outstanding
shares of common stock of the Corporation, $.01 par value ("Common Stock"),
entitled to vote at the Meeting is necessary to provide a quorum for the
transaction of business at the Meeting. Shares can only be voted if the
Stockholder is present in person or is represented by returning a properly
signed proxy. Each Stockholder's vote is very important. Whether or not you
plan to attend the Meeting in person, please sign and promptly return the
enclosed proxy card, which requires no postage if mailed in the United States.
All signed and returned proxies will be counted towards establishing a quorum
for the Meeting, regardless of how the shares are voted.
 
  Shares represented by proxy will be voted in accordance with your
instructions. You may specify your choice by marking the appropriate box on
the proxy card. If your proxy card is signed and returned without specifying
choices, your shares will be voted for the management nominees for directors,
and as the individuals named as proxy holders on the proxy deem advisable on
all other matters as may properly come before the Meeting.
 
  In order to be elected a director, a nominee must receive the affirmative
vote of a majority of the shares of Common Stock present in person or
represented by proxy and entitled to vote on the election. Withholding
authority to vote for a nominee for director will be treated as shares present
and entitled to vote and, for purposes of determining the outcome of the vote,
will have the same effect as a vote against the nominee. Broker "non-votes"
will not be treated as shares present and entitled to vote on a voting matter
and will have no effect on the outcome of the vote. A broker "non-vote" occurs
when a nominee holding shares for a beneficial holder does not have
discretionary voting power and does not receive voting instructions from the
beneficial owner.
 
  A Stockholder who returns a proxy may revoke it at any time before the
Stockholder's shares are voted at the Meeting by written notice to the
secretary of the Corporation received prior to the Meeting, by executing and
returning a later-dated proxy or by voting by ballot at the Meeting.
 
  The outstanding stock of the Corporation entitled to vote (excluding shares
held in treasury by the Corporation) as of January 20, 1999, consisted of
18,661,346 shares of Common Stock. Only Stockholders of record at the close of
business on January 20, 1999, are entitled to vote at the Meeting. Each share
is entitled to one vote.
 
                                  PROPOSAL 1
 
                             ELECTION OF DIRECTORS
 
  Eight directors are to be elected at the Meeting, each to hold office until
his successor is chosen and qualified or until his earlier resignation, death
or removal.
 
Nominees for Directors
 
  Set forth below are the names of the persons nominated as directors, their
ages, their offices in the Corporation, if any, their principal occupation or
employment for the past five years, the length of their tenure as directors
and the names of other public companies in which such persons hold
directorships. Information
 
                                       1
<PAGE>
 
regarding their beneficial ownership of the Corporation's Common Stock and of
the common stock of its parent company, Thermo Electron Corporation ("Thermo
Electron"), a provider of diversified products and services for the
biomedical, instrument and environmental markets, is reported under the
caption "Stock Ownership." All of the nominees are currently directors of the
Corporation.
 
<TABLE>
<S>                      <C>
Morton Collins.......... Mr. Collins, 63, has been a director of the Corporation since
                         1991. Mr. Collins has been a general partner of DSV Partners
                         III, a venture capital limited partnership, since 1981 and a
                         general partner of DSV Management, Ltd. since 1982. Since
                         1985, DSV Management, Ltd. has been a general partner of DSV
                         Partners IV, a venture capital limited partnership. Mr.
                         Collins is also a director of Kopin Corporation, The Liposome
                         Company and Thermedics Detection Inc.
Peter O. Crisp.......... Mr. Crisp, 66, has been a director of the Corporation since
                         1991. Mr. Crisp was a general partner of Venrock Associates, a
                         venture capital investment firm, for over five years until his
                         retirement in September 1997. Mr. Crisp is also a director of
                         American Superconductor Corporation, Evans & Sutherland
                         Computer Corporation, NovaCare Inc., Thermedics Inc., Thermo
                         Electron, Thermo Power Corporation and United States Trust
                         Corporation.
Paul F. Ferrari......... Mr. Ferrari, 68, has been a director of the Corporation since
                         1990. Mr. Ferrari was a vice president of Thermo Electron from
                         1988 until his retirement at the end of 1990; its secretary
                         from 1981 to 1990; and its treasurer from 1967 to 1988. Mr.
                         Ferrari is also a director of General Scanning Inc. and
                         Thermedics Inc.
George N. Hatsopoulos... Dr. Hatsopoulos, 72, has been a director of the Corporation
                         since 1988. Dr. Hatsopoulos has been the chairman of the board
                         and chief executive officer of Thermo Electron since 1956 and
                         its president from 1956 until January 1997. Dr. Hatsopoulos is
                         also a director of Photoelectron Corporation, Thermedics Inc.,
                         Thermo Ecotek Corporation, Thermo Electron, Thermo Fibertek
                         Inc., Thermo Instrument Systems Inc., Thermo Optek Corporation
                         and ThermoQuest Corporation.
Robert C. Howard........ Mr. Howard, 68, has been a director of the Corporation since
                         1988 and was chairman of the board from 1988 to February 1996.
                         Mr. Howard was an executive vice president of Thermo Electron
                         from 1986 until his retirement in January 1997. Mr. Howard
                         currently serves as a consultant to Thermo Electron.
John T. Keiser.......... Mr. Keiser, 63, has been a director of the Corporation since
                         September 1998. He has been the chief operating officer,
                         biomedical and advanced technology, of Thermo Electron since
                         September 1998, and a vice president from April 1997 until his
                         promotion. Mr. Keiser has been the president and chief
                         executive officer of Thermedics Inc., a majority-owned
                         subsidiary of Thermo Electron, since March 1998 and December
                         1998, respectively, and was a senior vice president of
                         Thermedics Inc. from 1994 until his promotion to president.
                         He has also been the president of Thermo Electron's wholly
                         owned biomedical group, a manufacturer of medical equipment
                         and instruments, since 1994. Mr. Keiser was president of the
                         Eberline Instrument, division of Thermo Instrument Systems
                         Inc., a majority-owned subsidiary of Thermo Electron, from
                         1985 to July 1994. The Eberline Instrument division
                         manufactures radiation detection and counting instrumentation
                         and radiation monitoring systems. Mr. Keiser is a director of
                         Metrika Systems Corporation, Thermedics Inc., Thermedics
                         Detection Inc., Thermo Cardiosystems Inc., ThermoLase
                         Corporation, Thermo Sentron Inc. and Trex Medical Corporation.
</TABLE>
 
                                       2
<PAGE>
 
<TABLE>
<S>                      <C>
Gary S. Weinstein....... Mr. Weinstein, 41, has been chairman of the board, chief
                         executive officer and a director of the Corporation, as well
                         as a vice president of Thermo Electron, since February 1996.
                         Mr. Weinstein was a managing director of Lehman Brothers Inc.
                         from 1992 until February 1996, serving from March 1995 until
                         leaving the firm as managing director and head of global
                         syndicate and equity capital markets. Mr. Weinstein joined
                         Lehman Brothers in 1988 and served in various positions,
                         including head of equities in Europe, head of equity new
                         issues in North and South America and head of global
                         convertible securities. Mr. Weinstein is also a director of
                         ThermoLase Corporation and Trex Medical Corporation.
Nicholas T. Zervas...... Dr. Zervas, 69, has been a director of the Corporation since
                         1992. Dr. Zervas has been Chief of Neurological Service at
                         Massachusetts General Hospital since 1977. Dr. Zervas is also
                         a director of Thermedics Inc., Thermo Cardiosystems Inc. and
                         ThermoLase Corporation.
</TABLE>
 
Committees of the Board of Directors and Meetings
 
  The board of directors has established an audit committee and a human
resources committee, each consisting solely of outside directors. The present
members of the audit committee are Mr. Morton Collins (Chairman), Mr. Peter O.
Crisp and Mr. Paul F. Ferrari. The audit committee reviews the scope of the
audit with the Corporation's independent public accountants and meets with
them for the purpose of reviewing the results of the audit subsequent to its
completion. The present members of the human resources committee are Dr.
Nicholas T. Zervas (Chairman), Mr. Mortin Collins and Mr. Peter O. Crisp. The
human resources committee reviews the performance of senior members of
management, recommends executive compensation and administers the
Corporation's stock option and other stock-based compensation plans. The
Corporation does not have a nominating committee of the board of directors.
The board of directors met eleven times, the audit committee met twice and the
human resources committee met six times during fiscal 1998. Each director
attended at least 75% of all meetings of the board of directors and committees
on which he served during fiscal 1998.
 
Compensation of Directors
 
 Cash Compensation
 
  Directors who are not employees of the Corporation, of Thermo Electron or of
any other companies affiliated with Thermo Electron (also referred to as
"outside directors") receive an annual retainer of $4,000 and a fee of $1,000
per day for attending regular meetings of the board of directors and $500 per
day for participating in meetings of the board of directors held by means of
conference telephone and for participating in certain meetings of committees
of the board of directors. Payment of outside directors' fees is made
quarterly. Dr. G. Hatsopoulos, Mr. Keiser and Mr. Weinstein are both employees
of Thermo Electron and do not receive any cash compensation from the
Corporation for their services as directors. Directors are also reimbursed for
out-of-pocket expenses incurred in attending meetings.
 
 Deferred Compensation Plan for Directors
 
  Under the Deferred Compensation Plan for directors (the "Deferred
Compensation Plan"), a director has the right to defer receipt of his cash
fees until he ceases to serve as a director, dies or retires from his
principal occupation. In the event of a change in control or proposed change
in control of the Corporation that is not approved by the board of directors,
deferred amounts become payable immediately. Either of the following is deemed
to be a change of control: (a) the acquisition, without the prior approval of
the board of directors, directly or indirectly, by any person of 50% or more
of the outstanding Common Stock or 25% or more of the outstanding common stock
of Thermo Electron; or (b) the failure of the persons serving on the board of
directors immediately prior to any contested election of directors or any
exchange offer or tender offer for the Common Stock or the common stock of
Thermo Electron to constitute a majority of the board of directors at any time
within two years following any such event. Amounts deferred pursuant to the
Deferred Compensation Plan are valued at the end
 
                                       3
<PAGE>
 
of each quarter as units of the Corporation's Common Stock. When payable,
amounts deferred may be disbursed solely in shares of Common Stock accumulated
under the Deferred Compensation Plan. A total of 22,500 shares of Common Stock
have been reserved for issuance under the Deferred Compensation Plan. As of
November 28, 1998, deferred units equal to 7,188.48 shares of Common Stock
were accumulated under the Deferred Compensation Plan.
 
 Directors Stock Option Plan
 
  The Corporation's directors stock option plan (the "Directors Plan"),
provides for the grant of stock options to purchase shares of the common stock
of the Corporation and its majority-owned subsidiaries to outside directors as
additional compensation for their service as directors. Under the Directors
Plan, outside Directors are automatically granted options to purchase 1,000
shares of Common Stock annually. In addition, the Directors Plan provides for
the automatic grant every five years of options to purchase 1,500 shares of
the common stock of a majority-owned subsidiary of the Corporation that is
"spun out" to outside investors.
 
  Prior to January 1, 1996, the Directors Plan provided for the grant of stock
options upon a director's initial appointment. Outside directors appointed
before the amendment of the Plan received an option to purchase 21,600 shares
of Common Stock upon their initial appointment or election. Options granted
prior to 1996 are currently exercisable, subject to restrictions upon transfer
and the right of the Corporation to repurchase such shares at the exercise
price in the event the director ceases to serve as a director of the
Corporation or another Thermo Electron company. Such repurchase rights lapse
ratably over a five-year period, commencing with the first anniversary of the
grant date. These options expire on the seventh anniversary of the grant date,
unless the director dies or otherwise ceases to serve as a director of the
Corporation or any other Thermo Electron company prior to that date. The grant
of options upon a director's appointment was discontinued on December 31,
1995.
 
  Outside directors also receive an annual grant of options to purchase 1,000
shares of Common Stock at the close of business on the date of each Annual
Meeting of the Stockholders of the Corporation. Options evidencing annual
grants may be exercised at any time from and after the six-month anniversary
of the grant date of the option and prior to the expiration of the option on
the third anniversary of the grant date. Shares acquired upon exercise of the
options are subject to repurchase by the Corporation at the exercise price if
the recipient ceases to serve as a director of the Corporation or another
Thermo Electron company prior to the first anniversary of the grant date.
 
  In addition, under the Directors Plan, outside directors are automatically
granted options to purchase 1,500 shares of common stock of each majority-
owned subsidiary that is "spun out" to outside investors. The grant occurs at
the close of business on the date of the first Annual Meeting of the
Stockholders next following the subsidiary's spinout, which is the first to
occur of either an initial public offering of the subsidiary's common stock or
a sale of such stock to third parties in an arms-length transaction. The
options granted vest and become exercisable on the fourth anniversary of the
date of grant, unless prior to such date the subsidiary's common stock is
registered under Section 12 of the Securities Exchange Act of 1934, as amended
("Section 12 Registration"). In the event that the effective date of Section
12 Registration occurs before the fourth anniversary of the grant date, the
options will become exercisable 90 days after the effective date and the
shares acquired upon exercise will be subject to restrictions on transfer and
the right of the Corporation to repurchase such shares at the exercise price
in the event the director ceases to serve as a director of the Corporation or
another Thermo Electron company. In the event of Section 12 Registration, the
restrictions and repurchase rights shall lapse or be deemed to lapse at the
rate of 25% per year, starting with the first anniversary of the grant date.
These options expire after five years. Under this provision of the Directors
Plan, the outside directors were each granted options to purchase 1,500 shares
of the common stock of Trex Communications Corporation on the date of the 1998
Annual Meeting of the Stockholders, as a consequence of the spinout of this
subsidiary in September 1997.
 
  The exercise price for options granted under the Directors Plan is the
average of the closing prices of the common stock as reported on the American
Stock Exchange (or other principal market on which the common stock is then
traded) for the five trading days immediately preceding and including the date
of grant, or, if the
 
                                       4
<PAGE>
 
shares are not then traded, at the last price paid per share by third parties
in an arms-length transaction prior to the option grant. As of November 28,
1998, options to purchase 120,650 shares of Common Stock had been granted, and
54,200 shares of Common Stock were outstanding under the Directors Plan, no
options had lapsed, options to purchase 66,450 shares of Common Stock had been
exercised, and options to purchase 104,350 shares of Common Stock were
reserved and available for grant.
 
Stock Ownership Policies for Directors
 
  During fiscal 1996, the human resources committee of the board of directors
(the "Committee") established a stock holding policy for directors. The stock
holding policy requires each director to hold a minimum of 1,000 shares of
Common Stock. Directors were requested to achieve this ownership level within
three years of their appointment. Directors who are also executive officers of
the Corporation are required to comply with a separate stock holding policy
established by the Committee in fiscal 1996, which is described in the
Committee Report on Executive Compensation--Stock Ownership Policies.
 
  In addition, the Committee adopted a policy requiring directors to hold a
certain number of shares of the Corporation's Common Stock acquired upon the
exercise of stock options. Under this policy, directors are required to hold
shares of Common Stock equal to one-half of their net option exercises over a
period of five years. The net option exercise is determined by calculating the
number of shares acquired upon exercise of a stock option, after deducting the
number of shares that could have been traded to exercise the option and the
number of shares that could have been surrendered to satisfy tax withholding
obligations attributable to the exercise of the option. This policy is also
applicable to executive officers and is described in the Committee Report on
Executive Compensation--Stock Ownership Policies.
 
                                STOCK OWNERSHIP
 
  The following table sets forth the beneficial ownership of Common Stock, as
well as the common stock of Thermo Electron, and ThermoLase Corporation
("ThermoLase"), Trex Medical Corporation ("Trex Medical") and Trex
Communications Corporation ("Trex Communications"), each a majority-owned
subsidiary of the Corporation, as of November 28, 1998, with respect to (i)
each person who was known by the Corporation to own beneficially more than 5%
of the outstanding shares of Common Stock, (ii) each director and nominee for
director, (iii) each executive officer named in the summary compensation table
under the heading "Executive Compensation" and (iv) all directors and current
executive officers as a group.
 
  While certain directors and executive officers of the Corporation are also
directors and executive officers of Thermo Electron or its subsidiaries other
than the Corporation, all such persons disclaim beneficial ownership of the
shares of Common Stock beneficially owned by Thermo Electron.
 
<TABLE>
<CAPTION>
                           Thermo Trex   Thermo Electron                   Trex       Trex
        Name (1)         Corporation (2) Corporation (3) ThermoLase (4) Medical (5) Comm. (6)
        --------         --------------- --------------- -------------- ----------- ---------
<S>                      <C>             <C>             <C>            <C>         <C>
Thermo Electron
 Corporation (7)........   11,865,278             N/A           N/A           N/A       N/A
Morton Collins..........       27,622               0        13,504         2,164         0
Peter O. Crisp..........       39,632         102,652        22,508         4,500         0
Paul F. Ferrari.........       29,050          16,595        22,508         3,075     5,000
George N. Hatsopoulos...       44,889       3,564,256        31,125        41,188         0
Robert C. Howard........       42,543         158,303             0        43,174         0
John T. Keiser..........            0         292,508             0        20,000         0
Hal Kirshner (8)........       83,321          42,048        92,086       276,750         0
Barry M. Lyons..........       55,000           5,000        10,000        10,000         0
Kenneth Y. Tang.........       91,662          10,430       354,318        51,706    37,500
Gary S. Weinstein.......      110,000         210,612       198,044       315,000         0
Nicholas T. Zervas......       31,207               0        88,027         1,500     5,000
All directors and
 current executive
 officers as a group (13
 persons)...............      568,842       4,836,529       942,037       782,057    47,500
</TABLE>
- --------
 
                                       5
<PAGE>
 
(1) Except as reflected in the footnotes to this table, shares of Common Stock
    of the Corporation and of the common stock of Thermo Electron, ThermoLase,
    Trex Medical and Trex Communications beneficially owned consist of shares
    owned by the indicated person or by that person for the benefit of minor
    children, and all share ownership includes sole voting and investment
    power.
(2) Shares of the Common Stock beneficially owned by each director and named
    executive officer and by all directors and current executive officers as a
    group exclude 11,865,278 shares beneficially owned by Thermo Electron.
    Shares of the Common Stock beneficially owned by Mr. Collins, Mr. Crisp,
    Mr. Ferrari, Dr. Hatsopoulos, Mr. Howard, Mr. Kirshner, Mr. Lyons, Dr.
    Tang, Mr. Weinstein, Dr. Zervas and all directors and current executive
    officers as a group include 6,750, 7,600, 7,450, 30,000, 28,000, 73,000,
    55,000, 75,000, 100,000, 28,200 and 421,000 shares, respectively, that
    such person or group has the right to acquire within 60 days of November
    28, 1998, through the exercise of stock options. Shares beneficially owned
    by Mr. Collins, Mr. Crisp, Dr. Zervas and all directors and current
    executive officers as a group include 1,273, 2,908, 3,007 and 7,188 full
    shares, respectively, that had been allocated through November 28, 1998,
    to their respective accounts maintained under the Corporation's Deferred
    Compensation Plan for Directors. Shares beneficially owned by Dr.
    Hatsopoulos include 160 shares held by Dr. Hatsopoulos' spouse. Shares
    beneficially owned by Dr. Tang include 2,025 shares held by Dr. Tang's
    daughter. As of November 28, 1998, no director or current executive
    officer beneficially owned more than 1.0% of the Common Stock outstanding
    as of November 28, 1998, all directors and current executive officers as a
    group beneficially owned 3.04% of the Common Stock outstanding as of such
    date.
(3) Shares of the common stock of Thermo Electron beneficially owned by Mr.
    Crisp, Dr. Hatsopoulos, Mr. Howard, Mr. Keiser, Mr. Kirshner, Mr. Lyons,
    Dr. Tang, Mr. Weinstein and all directors and current executive officers
    as a group include 9,125, 1,849,500, 14,287, 251,622, 39,550, 5,000,
    9,000, 210,275 and 2,761,131 shares, respectively, that such person or
    group has the right to acquire within 60 days of November 28, 1998,
    through the exercise of stock options. Shares beneficially owned by Dr.
    Hatsopoulos and all directors and current executive officers as a group
    include 2,266 and 4,763 full shares, respectively, allocated to their
    respective accounts maintained pursuant to Thermo Electron's employee
    stock ownership plan, of which the trustees, who have investment power
    over its assets were, as of November 28, 1998, executive officers of
    Thermo Electron. Shares beneficially owned by Mr. Crisp and all directors
    and current executive officers as a group include 46,663 full shares,
    allocated through November 28, 1998, to Mr. Crisp's account maintained
    pursuant to Thermo Electron's deferred compensation plan for directors.
    Shares beneficially owned by Mr. Ferrari include 10,062 shares held in a
    trust for the benefit of Mr. Ferrari's spouse. Shares beneficially owned
    by Dr. Hatsopoulos include 158,351 shares held by Dr. Hatsopoulos' spouse,
    408,664 shares held by a family trust of which Dr. G. Hatsopoulos' spouse
    is trustee, 500,000 shares held by a trust of which Dr. Hatsopoulos is the
    trustee; and 153 shares allocated to the account of Dr. Hatsopoulos'
    spouse maintained pursuant to Thermo Electron's employee stock ownership
    plan. Shares beneficially owned by Dr. Hatsopoulos also include 50,000
    shares that a family trust, of which Dr. Hatsopoulos' spouse is the
    trustee, has the right to acquire within 60 days of November 28, 1998
    through the exercise of stock options. As of November 28, 1998, no
    director or current executive officer beneficially owned more than 1% of
    the outstanding Thermo Electron common stock, other than Dr. Hatsopoulos,
    who beneficially owned 2.22% of such common stock; all directors and
    current executive officers as a group beneficially owned approximately
    3.02% of the Thermo Electron common stock outstanding as of November 28,
    1998.
(4) Shares of the common stock of ThermoLase beneficially owned by Mr.
    Collins, Mr. Crisp, Mr. Ferrari, Dr. Hatsopoulos, Mr. Kirshner, Mr. Lyons,
    Dr. Tang, Mr. Weinstein, Dr. Zervas and all directors and current
    executive officers as a group include 13,504, 22,508, 22,508, 28,800,
    66,400, 10,000, 304,000, 130,000, 67,068 and 768,188 shares, respectively,
    that such person or group has the right to acquire within 60 days of
    November 28, 1998, through the exercise of stock options. Shares
    beneficially owned by Dr. Zervas and all directors and current executive
    officers as a group include 1,803 full shares, allocated through November
    28, 1998, to Dr. Zervas's account maintained pursuant to ThermoLase's
    deferred compensation plan for directors. Shares beneficially owned by Dr.
    Hatsopoulos include 32 shares held by his spouse. Shares beneficially
    owned by Dr. Tang include 3,878 shares held by Dr. Tang's daughter. As of
    November 28, 1998, no director or current executive officer beneficially
    owned more than 1% of the
 
                                       6
<PAGE>
 
   common stock outstanding of ThermoLase; all directors and current executive
   officers as a group beneficially owned approximately 2.39% of the
   ThermoLase common stock outstanding as of such date.
(5) Shares of the common stock of Trex Medical beneficially owned by Mr.
    Collins, Mr. Crisp, Mr. Ferrari, Dr. Hatsopoulos, Mr. Howard, Mr. Keiser,
    Mr. Kirshner, Mr. Lyons, Dr. Tang, Mr. Weinstein, Dr. Zervas and all
    directors and current executive officers as a group include 1,500, 1,500,
    1,500, 40,000, 40,000, 20,000, 158,250, 10,000, 40,000, 300,000, 1,500 and
    624,250 shares, respectively, that such person or group has the right to
    acquire within 60 days of November 28, 1998, through the exercise of stock
    options. Shares beneficially owned by Dr. Hatsopoulos include 16 shares
    held by his spouse. As of November 28, 1998, no director or current
    executive officer beneficially owned more than 1% of the outstanding
    common stock of Trex Medical, all directors and current executive officers
    as a group beneficially owned 2.37% of such outstanding common stock as of
    such date.
(6) As of November 28, 1998, no director or current executive officer owned
    more than 1% of the outstanding common stock of Trex Communications; all
    directors and current executive officers as a group beneficially owned
    less than 1% of the Trex Communications common stock outstanding of such
    date.
(7) Thermo Electron beneficially owned 62.34% of the Common Stock as of
    November 28, 1998. Shares beneficially owned by Thermo Electron include
    370,370 shares issuable upon conversion of a 3 1/4% convertible debenture
    due in 2007. Thermo Electron's address is 81 Wyman Street, Waltham,
    Massachusetts 02454-9046. As of November 28, 1998, Thermo Electron had the
    power to elect all of the members of the Corporation's board of directors.
(8) As of November 28, 1998, Mr. Kirshner beneficially owned 11,678 redemption
    rights issued by ThermoLase. Each of these rights, issued as part of an
    exchange offer in April 1997, permits the holder to sell one share of
    ThermoLase common stock back to ThermoLase during the period of April 3,
    2001 through April 30, 2001 at a price of $20.25 per share. Mr. Kirshner
    resigned as president and chief executive officer of Trex Medical
    Corporation effective December 13, 1998. He continues to serve as a
    director and consultant to Trex Medical. See Executive Compensation--
    Severance Agreement.
 
Section 16(a) Beneficial Ownership Reporting Compliance
 
  Section 16(a) of the Securities Exchange Act of 1934 requires the
Corporation's directors and executive officers, and beneficial owners of more
than 10% of the Common Stock, such as Thermo Electron, to file with the
Securities and Exchange Commission initial reports of ownership and periodic
reports of changes in ownership of the Corporation's securities. Based upon a
review of such filings, all Section 16(a) filing requirements applicable to
such persons were complied with during fiscal 1997, except in the following
instances. Mr. Collins filed two transactions late, consisting of the exempt
acquisition of stock units to his account pursuant to the Corporation's
deferred compensation plan for Directors. Mr. Ferrari filed a Form 4 late,
reporting one sale of shares of Common Stock. Thermo Electron filed six Forms
4 late, reporting a total of 43 transactions, including 15 open market
purchases of shares of Common Stock and 28 transactions associated with the
grant, exercise and lapse of options to purchase Common Stock granted to
employees under its stock option program.
 
                            EXECUTIVE COMPENSATION
 
Summary Compensation Table
 
  The following table summarizes compensation for services to the Corporation
in all capacities awarded to, earned by or paid to the Corporation's chief
executive officer, and its four other most highly compensated executive
officers as well as one other executive who would have been among the four
most highly compensated executive officers except for the fact that he was not
serving as an executive officer at fiscal year-end (the "named executive
officers") for the last three fiscal years. The Corporation has a fiscal year
that is the 52- or 53- week period ending on the Saturday nearest September
30.
 
  The Corporation is required to appoint certain executive officers and full-
time employees of Thermo Electron as executive officers of the Corporation, in
accordance with the Thermo Electron Corporate Charter. The compensation for
these executive officers is determined and paid entirely by Thermo Electron.
The time and
 
                                       7
<PAGE>
 
effort devoted by these individuals to the Corporation's affairs is provided
to the Corporation under the Corporate Services Agreement between the
Corporation and Thermo Electron. Accordingly, the compensation for these
individuals is not reported in the following table.
 
                          Summary Compensation Table
 
<TABLE>
<CAPTION>
                                                        Long Term Compensation
                                Annual Compensation (1) Securities Underlying
        Name and         Fiscal ----------------------- Options (No. of Shares    All Other
   Principal Position     Year    Salary     Bonus (2)     and Company) (3)    Compensation (4)
   ------------------    ------ ----------------------- ---------------------------------------
<S>                      <C>    <C>         <C>         <C>         <C>        <C>
Gary S. Weinstein (5)...  1998  $   137,375         n/a      42,000 (TRCC)         $ 24,146(6)
 Chief Executive Officer  1997  $   117,604 $   150,000      30,000 (TLZ)          $163,329(6)
                          1996  $    72,916 $   150,000     100,000 (TKN)          $  4,736(7)
                                                            100,000 (TLZ)
                                                            300,000 (TXM)
Kenneth Y. Tang.........  1998  $   172,750         n/a      20,000 (TKN)          $  7,200
 Senior Vice President                                       20,000 (TRCC)
                          1997  $   164,000 $    53,000         --    --           $  7,125
                          1996  $   156,500 $    50,000      40,000 (TXM)          $  6,975
Barry M. Lyons (8)......  1998  $    54,167         n/a      15,000 (TKN)          $      0
 Vice President, Finance                                      5,000 (TMO)
                                                             10,000 (TLZ)
                                                             10,000 (TRCC)
                                                             10,000 (TXM)
Hal Kirshner (9)........  1998  $   218,750    $100,000       7,600 (TMO)          $  5,625
 Former President and                                         2,000 (MKA)
 Cheif Executive
  Officer,                                                    2,000 (ONX)
 Trex Medical
  Corporation                                                20,000 (RGI)
                                                              2,000 (TDX)
                                                              1,000 (TISI)
                                                             30,000 (TLZ)
                                                              2,000 (TRIL)
                                                              1,500 (VIZ)
                                                              2,000 (TRCC)
                                                              8,250 (TXM)
                          1997  $   197,500 $   200,000         300 (TMO)          $  5,344
                          1996  $   192,500 $   200,000     150,000 (TXM)          $  9,958(10)
                                                                150 (TMO)
                                                              2,000 (TBA)
                                                              2,000 (TFG)
                                                              2,000 (TLT)
                                                              6,000 (TOC)
                                                              6,000 (TMQ)
                                                              2,000 (TSR)
</TABLE>
- --------
(1) Annual compensation for executive officers is reviewed and determined on a
    calendar-year basis, even though the Corporation's fiscal year ends in
    September.
(2) The bonus amount represents the bonus paid for performance during the
    calendar year in which the Corporation's fiscal year-end occurred. As of
    the date hereof, bonuses have not yet been determined for calendar 1998.
    The Committee expects to determine bonuses in March 1999, when the audited
    financial statements of the Corporation's parent company will be
    available.
 
                                       8
<PAGE>
 
(3) In addition to receiving options to purchase Common Stock of the
    Corporation (designated in the table as TKN) and its subsidiaries,
    ThermoLase (designated in the table as TLZ), Trex Medical (designated in
    the table as TXM) and Trex Communications Corporation (designated in the
    table as TRCC), the named executive officers have been granted options to
    purchase common stock of Thermo Electron and certain of its other
    subsidiaries from time to time by Thermo Electron or such other
    subsidiaries as part of Thermo Electron's stock option program in their
    capacities as officers of the Corporation. Options have been granted
    during the period covered by the table to the named executive officers in
    the following Thermo Electron companies: Thermo Electron (designated in
    the table as TMO), Metrika Systems Corporation (designated in the table as
    MKA), ONIX Systems Inc. (designated in the table as ONX), The Randers
    Killam Group Inc. (designated in the table as RGI), Thermedics Detection
    Inc. (designated in the table as TDX), Thermo BioAnalysis Corporation
    (designated in the table as TBA), Thermo Fibergen Inc. (designated in the
    table as TFG), Thermo Information Solutions Inc. (designated in the table
    as TISI), ThermoLyte Corporation (designated in the table as TLT), Thermo
    Optek Corporation (designated in the table as TOC), ThermoQuest
    Corporation (designated in the table as TMQ), Thermo Sentron Inc.
    (designated in the table as TSR), Thermo Trilogy Corporation (designated
    in the table as TRIL) and Thermo Vision Corporation (designated in the
    table as VIZ). Mr. Weinstein has been granted certain options to purchase
    common stock of Thermo Electron and certain of its subsidiaries, other
    than the Corporation and its subsidiaries, from time to time as
    compensation for service to other Thermo Electron companies in capacities
    other than in his capacity as the chief executive officer of the
    Corporation. These options are not reported in the table.
(4) Represents the amount of matching contributions made by the individual's
    employer on behalf of executive officers participating in the Thermo
    Electron 401(k) plan.
(5) Mr. Weinstein was appointed the Corporation's chief executive officer
    effective as of February 26, 1996. He was also appointed a vice president
    of Thermo Electron effective as of February 26, 1996, and a portion of his
    annual cash compensation (salary and bonus) has been allocated to and paid
    by Thermo Electron since the commencement of his employment for the time
    he devoted to his responsibilities in that capacity. The annual cash
    compensation (salary and bonus) reported in the table for Mr. Weinstein
    represents the amount paid by the Corporation for Mr. Weinstein's services
    as its chief executive officer. For each of fiscal 1997 and 1996,
    approximately 50% of Mr. Weinstein's aggregate salary and bonus earned in
    all capacities throughout the Thermo Electron organization was paid by the
    Corporation for his services as chief executive officer.
(6) In addition to a $5,344 and $7,200 matching contribution referred to in
    footnote (4) in fiscal 1997 and 1998, respectively, this amount includes
    $18,533 for fiscal 1997 and $16,946 for fiscal 1998 attributable to an
    interest-free loan provided to Mr. Weinstein pursuant to the Corporation's
    Stock Holding Assistance Plan (see "Relationship with Affiliates--Stock
    Holding Assistance Plan"). Fiscal 1997 also includes the reimbursement by
    the Corporation of $96,407 in expenses associated with Mr. Weinstein's
    relocation to Waltham, Massachusetts, and an additional $43,045 paid by
    the Corporation to Mr. Weinstein as an adjustment to such reimbursement to
    account for taxes.
(7) Represents the amount attributable during fiscal 1996 to an interest-free
    loan provided to Mr. Weinstein pursuant to the Corporation's Stock Holding
    Assistance Plan. See "Relationship with Affiliates--Stock Holding
    Assistance Plan."
(8) Mr. Lyons was appointed a vice president of the Corporation on April 21,
    1998. The salary reported for fiscal 1998 represents the amount paid for
    the fiscal year from the commencement of his employment through October 3,
    1998.
(9) Mr. Kirshner was first appointed an executive officer of the Corporation
    in November 1992 in connection with the acquisition of LORAD Corporation
    by the Corporation. Mr. Kirshner ceased to be an executive officer of the
    Corporation upon his resignation as president and chief executive officer
    of Trex Medical Corporation on December 13, 1998. See Executive
    Compensation--Severance Agreement.
(10) In addition to a $5,344 matching contribution referred to in footnote
     (4), this amount includes $4,614, representing the then market value of
     115 shares of Thermo Electron common stock received by Mr. Kirshner in
     May 1996 at Thermo Electron's Annual Management Conference in recognition
     of his managerial achievements.
 
 
                                       9
<PAGE>
 
Stock Options Granted During Fiscal 1998
 
  The following table sets forth information concerning individual grants of
stock options by the Corporation and other Thermo Electron companies made
during fiscal 1998 to the Corporation's chief executive officer and the other
named executive officers in their capacities as executive officers of the
Corporation. It has not been the Corporation's policy in the past to grant
stock appreciation rights, and no such rights were granted during fiscal 1998.
 
  Mr. Weinstein has been granted options to purchase common stock of Thermo
Electron and certain of its subsidiaries from time to time as compensation for
service to other Thermo Electron companies in capacities other than in his
capacity as the chief executive officer of the Corporation. Accordingly,
options granted by Thermo Electron companies other than the Corporation and
its subsidiaries have not been reported here.
 
                         Options Grants in Fiscal 1998
 
<TABLE>
<CAPTION>
                                                                                  Potential Realizable
                                                                                    Value at Assumed
                                               Percent of                         Annual Rates of Stock
                                              Total Options                      Price Appreciation for
                         Number of Securities  Granted to   Exercise                 Option Term (2)
                          Underlying Options  Employees in  Price Per Expiration -----------------------
          Name             Granted (1) (A)     Fiscal Year    Share      Date        5%          10%
          ----           -------------------- ------------- --------- ---------- ----------- -----------
<S>                      <C>       <C>        <C>           <C>       <C>        <C>         <C>
Gary S. Weinstein.......     2,000 (TRCC)          2.23%     $ 4.00    01/21/05  $     3,260 $     7,580
                            40,000 (TRCC)         44.69%     $ 4.00    10/01/09  $   127,200 $   342,000
Kenneth Y. Tang.........    20,000 (TKN)           8.40%     $19.88    05/28/05  $   161,800 $   377,200
                            20,000 (TRCC)         22.35%     $ 4.00    10/01/09  $    63,600 $   171,000
Barry M. Lyons..........    15,000 (TKN)           6.30%     $20.43    04/21/05  $   124,800 $   290,700
                             5,000 (TMO)           0.25%(3)  $22.46    08/11/05  $    45,700 $   106,550
                            10,000 (TLZ)           1.16%     $ 5.73    04/21/05  $    23,300 $    54,400
                            10,000 (TRCC)         11.17%     $ 4.00    04/21/08  $    25,200 $    63,700
                            10,000 (TXM)           2.28%     $17.19    04/21/05  $    70,000 $   163,100
Hal Kirshner............       400 (TMO)           0.02%(3)  $34.50    06/02/03  $     3,812 $     8,424
                             7,200 (TMO)           0.36%(3)  $16.20    09/23/03  $    32,256 $    71,208
                             2,000 (MKA)           0.88%(3)  $14.23    01/21/05  $    11,580 $    27,000
                             2,000 (ONX)           0.23%(3)  $14.25    01/21/05  $    11,600 $    27,040
                            20,000 (RGI)           0.23%(3)  $ 0.80    01/21/05  $     6,600 $    15,200
                             2,000 (TDX)           0.21%(3)  $ 9.56    01/21/05  $     7,780 $    18,140
                             1,000 (TISI)          1.62%(3)  $10.00    01/21/05  $     4,070 $     9,490
                            30,000 (TLZ)           3.49%     $ 7.69    03/05/03  $    63,600 $   140,700
                             2,000 (TRIL)          1.43%(3)  $ 8.25    01/21/05  $     6,720 $    15,660
                             1,500 (VIZ)           0.35%(3)  $ 7.25    01/21/05  $     4,425 $    10,320
                             2,000 (TRCC)          2.23%     $ 4.00    01/21/05  $     3,260 $     7,580
                             8,250 (TXM)           1.88%     $14.20    12/12/04  $    47,685 $   111,128
</TABLE>
- --------
(1) As part of Thermo Electron's stock option program, options have been
    granted during fiscal 1998 to the named executive officers to purchase the
    common stock of the Corporation (designated in the table as TKN), Thermo
    Electron (TMO), ThermoLase Corporation (TLZ), Trex Communications (TRCC),
    Trex Medical Corporation (TXM), Metrika Systems Corporation (MKA), ONIX
    Systems Inc. (ONX), The Randers Group Incorporated (RGI), Thermedics
    Detection Inc. (TDX), Thermo Information Solutions Inc. (TISI), Thermo
    Trilogy Corporation (TRIL) and Thermo Vision Corporation (VIZ). All of the
    options granted during the fiscal year are immediately exercisable, except
    options to purchase the common stock of Trex Communications, Thermo
    Information Solutions Inc. and Thermo Trilogy Corporation, which are not
    exercisable until the earlier of (i) 90 days after the effective date of
    the registration of that company's common stock under Section 12 of the
    Securities Exchange Act of 1934 (the "Exchange Act") and
 
                                      10
<PAGE>
 
   (ii) nine years after the grant date. In all cases, the shares acquired
   upon exercise are subject to repurchase by the granting corporation at the
   exercise price if the optionee ceases to be employed by the Corporation or
   another Thermo Electron company. The granting corporation may exercise its
   repurchase rights within six months after the termination of the optionee's
   employment. For publicly traded companies, the repurchase rights generally
   lapse ratably over a one- to five-year period, depending on the option
   term, which may vary from five to seven years, provided that the optionee
   continues to be employed by the Corporation or another Thermo Electron
   company. For companies that are not publicly traded, the repurchase rights
   lapse in their entirety on the ninth anniversary of the grant date. Certain
   options granted as part of Thermo Electron's stock option program have
   three-year terms, and the repurchase rights lapse in their entirety on the
   second anniversary of the grant date. The granting corporation may permit
   the holders of such options to exercise options and to satisfy tax
   withholding obligations by surrendering shares equal in fair market value
   to the exercise price or withholding obligation.
(2) The amounts shown in this table represent hypothetical gains that could be
    achieved for the respective options if exercised at the end of the option
    term. These gains are based on assumed rates of stock appreciation of 5%
    and 10% compounded annually from the date the respective options were
    granted to their expiration date. The gains shown are net of the option
    exercise price, but do not include deductions for taxes or other expenses
    associated with the exercise. Actual gains, if any, on stock option
    exercises will depend on the future performance of the common stock of the
    granting corporation, the optionee's continued employment through the
    option period and the date on which the options are exercised.
(3) These options were granted under stock option plans maintained by Thermo
    Electron and, accordingly, are reported as a percentage of total options
    granted to employees of Thermo Electron and its subsidiaries.
 
Stock Options Exercised During Fiscal 1998 and Fiscal Year-End Values
 
  The following table reports certain information regarding stock option
exercises during fiscal 1998 and outstanding stock options to purchase shares
of Thermo Electron companies held at the end of fiscal 1998 by the
Corporation's chief executive officer and the other named executive officers.
No stock appreciation rights were exercised or were outstanding during fiscal
1998.
 
                                      11
<PAGE>
 
 Aggregated Options Exercises In Fiscal 1998 And Fiscal 1998 Year-End Options
                                    Values
 
<TABLE>
<CAPTION>
                                                                            Number of
                                                                           Unexercised
                                                                            Options at
                                                                              Fiscal
                                                       Shares                Year-End           Value of
                                                      Acquired   Value    (Exercisable/       Unexercised
                                                         on     Realized  Unexercisable)      In-the-Money
          Name                     Company            Exercise    (1)          (2)               Option
          ----           ---------------------------- -------- ---------- --------------      ------------
<S>                      <C>                          <C>      <C>        <C>                 <C>
Gary S. Weinstein (3)... ThermoTrex                       --          --     100,000 /0        $        0 /--
                         ThermoLase                       --          --     130,000 /0        $        0 /--
                         Trex Communications              --          --           0 /42,000   $       -- /0 (5)
                         Trex Medical                     --          --     300,000 /0        $        0 /--
Kenneth Y. Tang......... ThermoTrex                    48,318    $896,299     35,000 /0        $        0 /--
                         Thermo Electron                1,350     $31,668      9,000 /0        $        0 /--
                         ThermoLase                       --          --     304,000 /0        $1,018,000 /--
                         Trex Communications              --          --           0 /20,000           -- /$0 (5)
                         Trex Medical                     --          --      40,000 /0        $        0 /--
Barry M. Lyons.......... ThermoTrex                       --          --      15,000 /0        $        0 /--
                         Thermo Electron                  --          --       5,000 /0        $        0 /--
                         ThermoLase                       --          --      10,000 /0        $        0 /--
                         Trex Communications              --          --           0 /10,000           -- /$0 (5)
                         Trex Medical                     --          --      10,000 /0        $        0 /--
Hal Kirshner............ ThermoTrex                       --          --      73,000 /0        $  114,393 /--
                         Thermo Electron               84,375  $2,366,550     39,550 /0 (4)    $        0 /--
                         Metrika Systems                  --          --       2,000 /0        $        0 /--
                         Onix Systems                     --          --       2,000 /0        $        0 /--
                         Randers Group                    --          --      20,000 /0        $        0 /--
                         Thermedics Detection             --          --       2,000 /0        $        0 /--
                         Thermo BioAnalysis               --          --       2,000 /0        $    1,250 /--
                         Thermo Fibergen                  --          --       2,000 /0        $        0 /--
                         Thermo Information Solutions     --          --           0 /1,000            -- /0  (5)
                         ThermoLase                       --          --      66,400 /0        $  131,950 /--
                         ThermoLyte                       --          --           0 /2,000            -- /$0 (5)
                         Thermo Optek                     --          --       6,000 /0        $        0 /--
                         Thermo Quest                     --          --       6,000 /0        $        0 /--
                         Thermo Sentron                   --          --       2,000 /0                -- /$0 (5)
                         Thermo Trilogy                   --          --           0 /2,000            -- /$0 (5)
                         Thermo Vision                    --          --       1,500 /0        $        0 /--
                         Trex Communications              --          --           0 /2,000            -- /$0 (5)
                         Trex Medical                     --          --     158,250 /0        $        0 /--
</TABLE>
- --------
(1) Amounts shown in this column do not necessarily represent actual value
    realized from the sale of the shares acquired upon exercise of the option
    because in many cases the shares are not sold on exercise but continue to
    be held by the executive officer exercising the option. The amounts shown
    represent the difference between the option exercise price and the market
    price on the date of exercise, which is the amount that would have been
    realized if the shares had been sold immediately upon exercise.
(2) All of the options reported outstanding at the end of the fiscal year are
    immediately exercisable as of fiscal year-end, except options to purchase
    the common stock of ThermoLyte Corporation, Trex Communications
 
                                      12
<PAGE>
 
   Corporation, Thermo Information Solutions Inc. and Thermo Trilogy
   Corporation which are not exercisable until the earlier of (i) 90 days
   after the effective date of the registration of that company's common stock
   under Section 12 of the Exchange Act and (ii) nine years after the grant
   date. In all cases, the shares acquired upon exercise of the options
   reported in the table are subject to repurchase by the granting corporation
   at the exercise price if the optionee ceases to be employed by such
   corporation or another Thermo Electron company. The granting corporation
   may exercise its repurchase rights within six months after the termination
   of the optionee's employment. For publicly traded companies, the repurchase
   rights generally lapse ratably over a two- to ten-year period, depending on
   the option term, which may vary from three to twelve years, provided that
   the optionee continues to be employed by the Corporation or another Thermo
   Electron company. For companies that are not publicly traded, the
   repurchase rights lapse in their entirety on the ninth anniversary of the
   grant date. As to the options to purchase shares of the common stock of
   Trex Medical granted to Dr. Tang, the repurchase rights are deemed to lapse
   20% per year commencing on the sixth anniversary of the grant date. As to
   options to purchase 150,000 shares of the common stock of Trex Medical
   Corporation granted to Mr. Kirshner, the repurchase rights are deemed to
   lapse 10% per year on each of the first two anniversaries of the grant date
   and 20% per year commencing on the seventh anniversary of the grant date.
   Certain options granted as part of Thermo Electron's stock option program
   have three-year terms, and the repurchase rights lapse in their entirety on
   the second anniversary of the grant date.
(3) As an officer of Thermo Electron, Mr. Weinstein also holds unexercised
    options to purchase common stock of Thermo Electron and its subsidiaries
    other than the Corporation. These options are not reported in the table as
    they were granted as compensation for service to other Thermo Electron
    companies in capacities other than in his capacity as the chief executive
    officer of the Corporation.
(4) Options to purchase 22,500 shares of the common stock of Thermo Electron
    granted to Mr. Kirshner are subject to the same terms described in
    footnote (2), except that the repurchase rights of the granting
    corporation generally do not lapse until the tenth anniversary of the
    grant date. In the event of the employee's death or involuntary
    termination prior to the tenth anniversary of the grant date, the
    repurchase rights of the granting corporation shall be deemed to have
    lapsed ratably over a five-year period commencing with the fifth
    anniversary of the grant date.
(5) No public market existed for the shares as of October 3, 1998.
    Accordingly, no value in excess of the exercise price has been attributed
    to these options.
 
Executive Retention Agreements
 
  Thermo Electron has entered into agreements with certain executive officers
and key employees of the Corporation that provide severance benefits if there
is a change in control of Thermo Electron and their employment is terminated
for any reason, other than for cause, within 18 months thereafter. For
purposes of these agreements, a change in control exists upon (i) the
acquisition by any person of 40% or more of the outstanding common stock or
voting securities of Thermo Electron; (ii) the failure of the Thermo Electron
board of directors to be constituted of a majority of directors who are
"continuing directors", which term is defined to include directors who were
members of Thermo Electron's board on the date of the agreement or who
subsequent to the date of the agreement were nominated or elected by a
majority of directors who were "continuing directors" at the time of such
nomination or election; (iii) the consummation of a merger, consolidation,
reorganization, recapitalization or statutory share exchange involving Thermo
Electron or the sale or other disposition of all or substantially all of the
assets of Thermo Electron unless immediately after such transaction (a) all
holders of Thermo Electron common stock immediately prior to such transaction
own more than 60% of the outstanding voting securities of the resulting or
acquiring corporation in substantially the same proportions as their ownership
immediately prior to such transactions and (b) no person after the transaction
owns 40% or more of the outstanding voting securities of the resulting or
acquiring corporation; or (iv) approval by stockholders of a complete
liquidation or dissolution of Thermo Electron.
 
  In 1998, Thermo authorized an executive retention agreement with Gary S.
Weinstein. This agreement provides that in the event the individual's
employment is terminated within 18 months after a change in control,
 
                                      13
<PAGE>
 
the individual would be entitled to a lump sum payment equal to the sum of one
times, the individual's highest annual base salary in any 12 month period
during the prior five year period, plus one times the individual's highest
annual bonus in the 12 month period during the prior five year period. In
addition, the individual would be provided benefits for a period of one year,
after such termination substantially equivalent to the benefits package the
individual would have been otherwise entitled to receive if the individual was
not terminated. The individual would also be entitled to all other
compensation due to the individual from the Corporation through the date of
termination. Further, all options that the individual holds in Thermo Electron
and its subsidiaries, including the Corporation, would become fully vested as
of the date of the change in control. Finally, the individual would be
entitled to a cash payment equal to $15,000, to be used toward outplacement
services. this executive retention agreement supercedes and replaces any and
all prior severance arrangements which this individual has with Thermo
Electron.
 
  Assuming that the severance benefits would have been payable as of January
1, 1999, the lump sum salary and bonus payment under such agreement to Mr.
Weinstein, would have been approximately $585,000. In the event that payments
under this agreement are deemed to be so called "excess parachute payments"
under the applicable provisions of the Internal Revenue Code of 1986, as
amended, the individual would be entitled to receive a gross-up payment equal
to the amount of any excise tax payable by such individual with respect to
such payment plus the amount of all other additional taxes imposed on such
individual attributable to the receipt of such gross-up payment.
 
Severance Agreement
 
  Mr. Hal Kirshner resigned as president and chief executive officer of the
Corporation effective as of December 13, 1998 and his employment with the
Corporation was terminated effective December 31, 1998 (the "Employment
Termination Date"). In connection with his resignation, the Corporation
entered into an agreement with Mr. Kirshner providing that in addition to
receiving his regular salary through the Employment Termination Date, Mr.
Kirshner will be paid a bonus for the 1998 calendar year in an amount equal to
$100,000. The agreement also provides for an ongoing consulting relationship
between Mr. Kirshner and the Corporation for the two year period from January
1, 1999 to December 31, 2000. For his consulting services, Mr. Kirshner would
be paid a fee at a rate of $225,000 per year, payable monthly in arrears. Mr.
Kirshner will continue to serve as a director of the Corporation.
 
                  COMMITTEE REPORT ON EXECUTIVE COMPENSATION
 
Executive Compensation
 
  All decisions on compensation for the Corporation's executive officers are
made by the human resources committee of the board of directors (the
"Committee"). In reviewing and establishing total cash compensation and stock-
based compensation for executives, the Committee follows guidelines
established by the human resources committee of the board of directors of its
parent corporation, Thermo Electron. The executive compensation program
presently consists of annual base salary ("salary"), short-term incentives in
the form of annual cash bonuses, and long-term incentives in the form of stock
options.
 
  The Committee believes that the total compensation of executive officers
should reflect the scope of their responsibilities, the success of the
Corporation, and the contributions of each executive to that success. In
addition, the Committee believes that base salaries should approximate the
mid-point of competitive salaries derived from market surveys and that short-
term and long-term incentive compensation should reflect the performance of
the Corporation and the contributions of each executive.
 
  External competitiveness is an important element of the Committee's
compensation policy. The competitiveness of the Corporation's total
compensation for its executives is assessed by comparing it to market data
provided by its compensation consultant and by participating in annual
executive compensation surveys, primarily "Project 777," an executive
compensation survey prepared by Management Compensation Services, a
 
                                      14
<PAGE>
 
division of Hewitt Associates. The majority of firms represented in the
Project 777 survey are included in the Standard & Poor's Index, but do not
necessarily correspond to the companies included in the Corporation's peer
group index, the Dow Jones Total Return Index for the Diversified Technology
Industry Group.
 
  Principles of internal equity are also central to the Committee's
compensation policies. Total compensation considered for the Corporation's
officers, whether cash or stock-based incentives, is also evaluated by
comparing it to total compensation of other executives within the Thermo
Electron organization with comparable levels of responsibility for comparably
sized business units.
 
  The Committee changed its fiscal year to end on the Saturday nearest
September 30 in 1995. Because the compensation practices of the Corporation
are guided by the policies of its parent corporation, Thermo Electron, the
Committee has continued to conduct cash compensation reviews on a calendar-
year basis in order to coincide with the compensation reviews conducted by the
human resources committee of the board of directors of Thermo Electron. Thermo
Electron operates on a fiscal year that ends on the Saturday nearest December
31.
 
  The process for determining each of the elements of total compensation for
the Corporation's officers is outlined below.
 
 Base Salary
 
  Base salaries are intended to approximate the mid-point of competitive
salaries for similar organizations of comparable size and complexity to the
Corporation. Executive salaries are adjusted gradually over time and only as
necessary to meet this objective. Increases in base salary may be moderated by
other considerations, such as geographic or regional market data, industry
trends or internal fairness within the Corporation and Thermo Electron. It is
the Committee's intention that over time the base salaries for the chief
executive officer and the Corporation's other named executive officers will
approach the mid-point of competitive data. The salary increases in calendar
1998 for the named executive officers generally reflect this practice of
gradual increases and moderation.
 
 Cash Bonus
 
  The Committee establishes a median potential bonus for each executive by
using the market data on total cash compensation from the same executive
compensation surveys as used to determine salaries. Specifically, the median
potential bonus plus the salary of an executive officer is approximately equal
to the mid-point of competitive total cash compensation for a similar position
and level of responsibility in businesses having comparable sales and
complexity to the Corporation. The actual bonus awarded to an executive
officer may range from zero to three times the median potential bonus. The
value within the range (the bonus multiplier) is determined at the end of each
year by the Committee in its discretion. The Committee exercises its
discretion by evaluating each executive's performance using a methodology
developed by its parent corporation, Thermo Electron, and applied throughout
the Thermo Electron organization. The methodology incorporates measures of
operating returns which are designed to measure profitability and
contributions to shareholder value, and are measures of corporate and
divisional performance that are evaluated using graphs developed by Thermo
Electron intended to reward performance that is perceived as above average and
to penalize performance that is perceived as below average. Generally, the
measures of operating returns used in the Committee's determinations include
return on net assets, growth in income, and return on sales and the
Committee's determinations also included a subjective evaluation of the
contributions of each executive that are not captured by operating measures
but are considered important to the creation of long-term value for the
Stockholders. These measures of achievements are not financial targets that
are met, not met or exceeded. The relative weighting of the operating measures
and subjective evaluation varies among the executives, depending on their
roles and responsibilities within the organization.
 
                                      15
<PAGE>
 
 Stock Option Program
 
  The primary goal of the Corporation is to excel in the creation of long-term
value for the Stockholders. The principal incentive tool used to achieve this
goal is the periodic award to key employees of options to purchase common
stock of the Corporation and other Thermo Electron companies.
 
  The Committee and management believe that awards of stock options to
purchase the shares of both the Corporation and other companies within the
Thermo Electron group of companies accomplish many objectives. The grant of
options to key employees encourages equity ownership in the Corporation, and
closely aligns management's interests to the interests of all the
Stockholders. The emphasis on stock options also results in management's
compensation being closely linked to stock performance. In addition, because
they are subject to vesting periods of varying durations and to forfeiture if
the employee leaves the Corporation prematurely, stock options are an
incentive for key employees to remain with the Corporation long-term. The
Committee believes stock option awards in its parent corporation, Thermo
Electron, and its majority-owned subsidiaries, ThermoLase Corporation, Trex
Medical Corporation and Trex Communications Corporation, and the other
majority-owned subsidiaries of Thermo Electron, are an important tool in
providing incentives for performance within the entire organization.
 
  In determining awards, the Committee considers the average annual value of
all options to purchase shares of the Corporation and other companies within
the Thermo Electron organization that vest in the next five years. (Values are
established using a modified Black-Scholes option pricing model.) Awards are
reviewed annually in conjunction with the annual review of cash compensation,
and additional awards are made periodically as deemed appropriate. The
Committee considers total compensation of executives, actual and anticipated
contributions of each executive (which includes a subjective assessment by the
Committee of the value of the executive's future potential within the
organization), as well as the value of previously awarded options as described
above, in determining option awards. The option awards made with respect to
the common stock of Thermo Electron and the Corporation, as well as of
subsidiaries of Thermo Electron and the Corporation, as part of Thermo
Electron's stock option program were determined by the human resources
committee of the board of directors of the applicable company using a similar
analysis. In addition, certain awards to purchase Thermo Electron stock were
made under a program that awards options to certain eligible employees
annually based on the number of shares of the common stock of Thermo Electron
held by the employee, as an incentive to buy and hold Thermo Electron stock.
 
Stock Ownership Policies
 
  During fiscal 1996, the Committee established a stock holding policy for
executive officers of the Corporation. The stock holding policy specifies an
appropriate level of ownership of the Corporation's Common Stock as a multiple
of the officer's compensation. For the chief executive officer, the multiple
is one times his base salary and reference bonus for the calendar year. For
all other executive officers, the multiple is one times the officer's base
salary. The Committee deemed it appropriate to permit officers to achieve
these ownership levels over a three-year period. The policy was amended in
1998 to apply only to the chief executive officer.
 
  In order to assist officers in complying with the policy, the Committee also
adopted a stock holding assistance plan under which the Corporation is
authorized to make interest-free loans to officers to enable them to purchase
shares of the Common Stock in the open market. The loans are required to be
repaid upon the earlier of demand or the fifth anniversary of the date of the
loan, unless otherwise authorized by the Committee. During 1996, Mr.
Weinstein, the Corporation's chief executive officer, received a loan in the
principal amount of $375,003.85 under this program. As of the date hereof,
$300,003.08 of this loan remained outstanding. See Relationship with
Affiliates--Stock Holding Assistance Plan.
 
  The Committee also adopted a policy requiring its executive officers to hold
a certain number of shares of the Corporation's Common Stock acquired upon the
exercise of stock options granted by the Corporation. Under this policy,
executive officers are required to hold shares of Common Stock equal to one-
half of their net option
 
                                      16
<PAGE>
 
exercises for a period of five years. The net option exercise is determined by
calculating the number of shares acquired upon exercise of a stock option,
after deducting the number of shares that could have been traded to exercise
the option and the number of shares that could have been surrendered to
satisfy tax withholding obligations attributable to the exercise of the
option.
 
Policy on Deductibility of Compensation
 
  The Committee has also considered the application of Section 162(m) of the
Internal Revenue Code to the Corporation's compensation practices. Section
162(m) limits the tax deduction available to public companies for annual
compensation paid to senior executives in excess of $1 million unless the
compensation qualifies as "performance based" or is otherwise exempt from
Section 162(m). The annual cash compensation paid to individual executives
does not approach the $1 million threshold, and it is believed that the stock
incentive plans of the Corporation qualify as "performance based." Therefore,
the Committee does not believe any further action is necessary in order to
comply with Section 162(m). From time to time, the Committee will reexamine
the Corporation's compensation practices and the effect of Section 162(m).
 
1998 CEO Compensation
 
  Cash compensation for Mr. Gary S. Weinstein is reviewed by both the
Committee and the human resources committee of the board of directors of
Thermo Electron, due to his responsibilities as both the Corporation's chief
executive officer and as a vice president of Thermo Electron, the
Corporation's parent company. Each committee evaluates Mr. Weinstein's
performance and proposed compensation using a process similar to that used for
the other executive officers of the Corporation. At the Thermo Electron level,
Mr. Weinstein is evaluated on his performance related to the Corporation, as
well as on his performance of other responsibilities within Thermo Electron,
weighted in accordance with the amount of time and effort devoted to each
operation or function. The Corporation's Committee then reviews the analysis
and determinations of the Thermo Electron committee, makes an independent
assessment of Mr. Weinstein's performance as it relates to the Corporation
using criteria similar to those used for the other executive officers of the
Corporation, and then agrees to an appropriate allocation of Mr. Weinstein's
compensation to be paid by the Corporation.
 
  In December 1997, the Committee conducted its review of Mr. Weinstein's
proposed salary for calendar 1998. The Committee concurred in the
recommendation made by the Thermo Electron Committee and agreed to an
allocation of 50% of Mr. Weinstein's total cash compensation for 1998 to the
Corporation, based on his relative responsibilities at the Corporation and
Thermo Electron. No determination of Mr. Weinstein's bonus has been made to
date, and the Committee is not expected to take any action until March 1999,
when the audited financial statements of the Corporation's parent company will
be available.
 
  Awards to Mr. Weinstein of options to purchase shares of the Corporation's
Common Stock are reviewed and determined periodically by the Committee using
criteria similar to those used for the other executive officers of the
Corporation. No awards to purchase shares of the Corporation's Common Stock
were made by the Committee to Mr. Weinstein in fiscal 1998. The stock option
awards to Mr. Weinstein in fiscal 1998 with respect to 40,000 shares of Trex
Communications Corporation were determined by the human resources committee of
the granting company using an analysis similar to that used by the Committee
in awarding options to purchase common stock, as described above under Stock
Option Program.
 
                             Dr. Nicholas T. Zervas (Chairman)
 
                             Mr. Morton Collins
 
                             Mr. Peter O. Crisp
 
                                      17
<PAGE>
 
                         COMPARATIVE PERFORMANCE GRAPH
 
  The Securities and Exchange Commission requires that the Corporation include
in this proxy statement a line-graph presentation comparing cumulative, five-
year shareholder returns for the Corporation's Common Stock with a broad-based
market index and either a nationally recognized industry standard or an index
of peer companies selected by the Corporation. The Corporation has compared
its performance with the American Stock Exchange Market Value Index and the
Dow Jones Total Return Index for the Diversified Technology Industry Group.
 
           Comparison of Total Return Among ThermoTrex Corporation,
            the American Stock Exchange Market Value Index and the
  Dow Jones Total Return Index for the Diversified Technology Industry Group
                   From December 31, 1993 to October 2, 1998
 
                             [GRAPH APPEARS HERE]
<TABLE> 
<CAPTION> 
                  12/31/93  12/30/94  9/29/95  9/27/96  9/26/97  10/2/98
- ------------------------------------------------------------------------ 
<S>               <C>       <C>       <C>      <C>      <C>      <C> 
TKN                 100        88       85      234      172       77
- ------------------------------------------------------------------------ 
DJDTC               100       103      135      161      224      171
- ------------------------------------------------------------------------ 
AMEX                100        99      123      127      154      136
- ------------------------------------------------------------------------ 
</TABLE> 

  The total return for the Corporation's Common Stock (TKN), the American
Stock Exchange Market Value Index (AMEX) and the Dow Jones Total Return Index
for the Diversified Technology Industry Group (DJDTC) assumes the reinvestment
of dividends, although dividends have not been declared on the Corporation's
Common Stock. The American Stock Exchange Market Value Index tracks the
aggregate performance of equity securities of companies listed on the American
Stock Exchange. The Corporation's Common Stock is traded on the American Stock
Exchange under the ticker symbol "TKN."
 
                         RELATIONSHIP WITH AFFILIATES
 
  Thermo Electron has adopted a strategy of selling a minority interest in
subsidiary companies to outside investors as an important tool in its future
development. As part of this strategy, Thermo Electron and certain of its
subsidiaries have created several privately and publicly held majority-owned
subsidiaries. The Corporation has created ThermoLase Corporation
("ThermoLase") and Trex Medical Corporation ("Trex Medical") as publicly held,
majority-owned subsidiaries. From time to time, Thermo Electron and its
subsidiaries may create other majority-owned subsidiaries as part of its
spinout strategy. (The Corporation and the other Thermo Electron subsidiaries
are hereinafter referred to as the "Thermo Subsidiaries.")
 
                                      18
<PAGE>
 
  Thermo Electron and each of the Thermo Subsidiaries recognize that the
benefits and support that derive from their affiliation are essential elements
of their individual performance. Accordingly, Thermo Electron and each of the
Thermo Subsidiaries, including the Corporation, have adopted the Thermo
Electron Corporate Charter (the "Charter") to define the relationships and
delineate the nature of such cooperation among themselves. The purpose of the
Charter is to ensure that (1) all of the companies and their stockholders are
treated consistently and fairly, (2) the scope and nature of the cooperation
among the companies, and each company's responsibilities, are adequately
defined, (3) each company has access to the combined resources and financial,
managerial and technological strengths of the others, and (4) Thermo Electron
and the Thermo Subsidiaries, in the aggregate, are able to obtain the most
favorable terms from outside parties.
 
  To achieve these ends, the Charter identifies the general principles to be
followed by the companies, addresses the role and responsibilities of the
management of each company, provides for the sharing of group resources by the
companies and provides for centralized administrative, banking and credit
services to be performed by Thermo Electron. The services provided by Thermo
Electron include collecting and managing cash generated by members,
coordinating the access of Thermo Electron and the Thermo Subsidiaries (the
"Thermo Group") to external financing sources, ensuring compliance with
external financial covenants and internal financial policies, assisting in the
formulation of long-range planning and providing other banking and credit
services. Pursuant to the Charter, Thermo Electron may also provide guarantees
of debt or other obligations of the Thermo Subsidiaries or may obtain external
financing at the parent level for the benefit of the Thermo Subsidiaries. In
certain instances, the Thermo Subsidiaries may provide credit support to, or
on behalf of, the consolidated entity or may obtain financing directly from
external financing sources. Under the Charter, Thermo Electron is responsible
for determining that the Thermo Group remains in compliance with all covenants
imposed by external financing sources, including covenants related to
borrowings of Thermo Electron or other members of the Thermo Group, and for
apportioning such constraints within the Thermo Group. In addition, Thermo
Electron establishes certain internal policies and procedures applicable to
members of the Thermo Group. The cost of the services provided by Thermo
Electron to the Thermo Subsidiaries is covered under existing corporate
services agreements between Thermo Electron and each of the Thermo
Subsidiaries.
 
  The Charter presently provides that it shall continue in effect so long as
Thermo Electron and at least one Thermo Subsidiary participate. The Charter
may be amended at any time by agreement of the participants. Any Thermo
Subsidiary, including the Corporation, can withdraw from participation in the
Charter upon 30 days' prior notice. In addition, Thermo Electron may terminate
a subsidiary's participation in the Charter in the event the subsidiary ceases
to be controlled by Thermo Electron or ceases to comply with the Charter or
the policies and procedures applicable to the Thermo Group. A withdrawal from
the Charter automatically terminates the corporate services agreement and tax
allocation agreement (if any) in effect between the withdrawing company and
Thermo Electron. The withdrawal from participation does not terminate
outstanding commitments to third parties made by the withdrawing company, or
by Thermo Electron or other members of the Thermo Group, prior to the
withdrawal. In addition, a withdrawing company is required to continue to
comply with all policies and procedures applicable to the Thermo Group and to
provide certain administrative functions mandated by Thermo Electron so long
as the withdrawing company is controlled by or affiliated with Thermo
Electron.
 
Corporate Services Agreement
 
  As provided in the Charter, the Corporation and Thermo Electron have entered
into a Corporate Services Agreement (the "Services Agreement") under which
Thermo Electron's corporate staff provides certain administrative services,
including certain legal advice and services, risk management, certain employee
benefit administration, tax advice and preparation of tax returns, centralized
cash management and certain financial and other services to the Corporation.
The Corporation was assessed an annual fee equal to 1% of the Corporation's
total revenues for these services in calendar 1997 and 0.8% of the
Corporation's total revenues in calendar 1998. The annual fee will be 0.8% of
the Corporation's total revenues in calendar 1999. The fee is reviewed
annually and may be changed by mutual agreement of the Corporation and Thermo
Electron. During fiscal 1998, Thermo Electron assessed the Corporation
$2,906,000 in fees under the Services Agreement. Management believes that
 
                                      19
<PAGE>
 
the charges under the Services Agreement are reasonable and that such fees are
representative of the expense the Corporation would have incurred on a stand-
alone basis. For additional items such as employee benefit plans, insurance
coverage and other identifiable costs, Thermo Electron charges the Corporation
based on costs attributable to the Corporation. The Services Agreement
automatically renews for successive one-year terms, unless canceled by the
Corporation upon 30 days' prior notice. In addition, the Services Agreement
terminates automatically in the event the Corporation ceases to be a member of
the Thermo Group or ceases to be a participant in the Charter. In the event of
a termination of the Services Agreement, the Corporation will be required to
pay a termination fee equal to the fee that was paid by the Corporation for
services under the Services Agreement for the nine-month period prior to
termination. Following termination, Thermo Electron may provide certain
administrative services on an as-requested basis by the Corporation or as
required in order to meet the Corporation's obligations under Thermo
Electron's policies and procedures. Thermo Electron will charge the
Corporation a fee equal to the market rate for comparable services if such
services are provided to the Corporation following termination.
 
Miscellaneous
 
  From time to time, the Corporation may transact business with other
companies in the Thermo Group. In fiscal 1998, such transactions included the
following:
 
  Trex Medical has an arrangement with the Tecomet division of Thermo Electron
for the manufacture of the Trex Medical 's proprietary HTC grid. Under this
arrangement Tecomet manufactures the grid for Trex Medical pursuant to written
purchase orders. Trex Medical owns the intellectual property rights to the
grid. During fiscal 1998, Trex Medical purchased grids for an aggregate
purchase price of $486,000 under this arrangement. During fiscal 1998, Trex
Medical purchased additional grids from Tecomet for $311,000, under other
arrangements.
 
  Under an arrangement with Thermedics Detection Inc., a majority-owned
subsidiary of Thermedics Inc., a majority-owned subsidiary of Thermo Electron,
Trex Medical manufactures an X-ray source that is used as a component in a
fill-measuring device produced by Thermedics Detection. Trex Medical
manufactures these X-ray sources for Thermedics Detection pursuant to written
purchase orders. During fiscal 1998, Thermedics Detection purchased X-ray
source units from Trex Medical for an aggregate purchase price of $406,000
under this arrangement.
 
  During fiscal 1998, ThermoLase purchased products totaling $241,000 from
Bird Products Corporation, a wholly owned subsidiary of Thermo Electron.
 
  As of October 3, 1998, the Corporation owed Thermo Electron $10,000,000
principal amount pursuant to 3 1/4% Convertible Subordinated Debentures due
2007, convertible into shares of the Corporation's common stock at $27.00 per
share.
 
  As of October 3, 1998, ThermoLase owed Thermo Electron $4,500,000 principal
amount pursuant to 4 3/8% Convertible Subordinated Debentures due 2004,
convertible into shares of Thermolase common stock at $17.385 per share.
 
  The Corporation, along with certain other Thermo Subsidiaries, participates
in a notional pool arrangement with Barclays Bank, which includes a $150
million credit facility. Only UK-based Thermo Subsidiaries participate in this
arrangement. Under this arrangement the Bank notionally combines the positive
and negative cash balances held by the participants to calculate the net
interest yield/expense for the group. The benefit derived from this
arrangement is then allocated based on balances attributable to the respective
participants. Thermo Electron guarantees all of the obligations of each
participant in this arrangement. In addition, funds on deposit under this
arrangement provide credit support for overdraft obligations of other
participants. As of October 3, 1998, the Corporation had a negative cash
balance of approximately $80,000, based on an exchange rate of
$1.70/(Pounds)1.00 as of October 3, 1998. For 1998, the average interest rate
earned on GBP deposits by participants in this credit arrangement was
approximately 7.56% and the average annual interest rate paid on overdrafts
was approximately 7.79%.
 
                                      20
<PAGE>
 
  As of October 3, 1998, the Corporation owed Thermo Electron and its other
subsidiaries an aggregate of $5,252,000 for amounts due under the Corporate
Services Agreement and related administrative charges, for other products and
services, and for miscellaneous items excluding loans described above, net of
amounts owed to the Corporation by Thermo Electron and its other subsidiaries
for products and services and miscellaneous items. The largest amount of net
indebtedness owed by the Corporation to Thermo Electron and its other
subsidiaries since September 27, 1997 was $12,927,000. These amounts do not
bear interest (other than an $11,000,000 loan which bore interest at a rate
equal to the 90-day Commercial Paper Corporate Rate plus 25 basis points) and
are expected to be paid in the normal course of business.
 
  As of October 3, 1998, $146,534,000 of the Corporation's cash equivalents
were invested in a repurchase agreement with Thermo Electron. Under this
agreement, the Corporation in effect lends excess cash to Thermo Electron,
which Thermo Electron collateralizes with investments principally consisting
of corporate notes, U.S. government agency securities, money market funds,
commercial paper and other marketable securities, in the amount of at least
103% of such obligation. The Corporation's funds subject to the repurchase
agreement are readily convertible into cash by the Corporation. The repurchase
agreement earns a rate based on the 90-day Commercial Paper Composite Rate
plus 25 basis points, set at the beginning of each quarter.
 
Stock Holding Assistance Plan
 
  In 1996, the Corporation adopted a stock holding policy which requires its
executive officers to acquire and hold a minimum number of shares of Common
Stock. In order to assist the executive officers in complying with the policy,
the Corporation also adopted a Stock Holding Assistance Plan under which it
may make interest-free loans to certain key employees, including its executive
officers, to enable such employees to purchase the Common Stock in the open
market. During 1996, Mr. Weinstein received a loan in the principal amount of
$375,003.85 under this plan to purchase 10,000 shares. The loan to Mr.
Weinstein is to be repaid upon the earlier of demand or the fifth anniversary
of the date of the loan, unless otherwise authorized by the human resources
committee of the board of directors of the Corporation. As of the date hereof,
$300,003.08 of the loan remained outstanding.
 
                 APPOINTMENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
  The board of directors has appointed Arthur Andersen LLP as independent
public accountants for fiscal 1999. Arthur Andersen LLP has acted as
independent public accountants for the Corporation since 1990. Representatives
of that firm are expected to be present at the meeting, will have the
opportunity to make a statement if they desire to do so and will be available
to respond to questions. The board of directors has established an audit
committee, presently consisting of three outside directors, the purpose of
which is to review the scope and results of the audit.
 
                                 OTHER ACTION
 
  Management is not aware at this time of any other matters that will be
presented for action at the meeting. Should any such matters be presented, the
proxies grant power to the proxy holders to vote shares represented by the
proxies in the discretion of such proxy holders.
 
                             STOCKHOLDER PROPOSALS
 
  Proposals of Stockholders intended to be included in the proxy statement and
form of proxy relating to the 2000 Annual Meeting of the Stockholders of the
Corporation and to be presented at such meeting must be received by the
Corporation for inclusion in the proxy statement and form of proxy no later
than October 8, 1999. Notices of Stockholder proposals submitted outside the
processes of Rule 14a-8 of the Securities Exchange Act of 1934, as
 
                                      21
<PAGE>
 
amended (relating to proposals to be presented at the meeting but not included
in the Corporation's proxy statement and form of proxy), will be considered
untimely, and thus the Corporation's proxy may confer discretionary voting
authority on the persons named in the proxy with regard to such proposals, if
received after December 18, 1999.
 
                            SOLICITATION STATEMENT
 
  The cost of this solicitation of proxies will be borne by the Corporation.
Solicitation will be made primarily by mail, but regular employees of the
Corporation may solicit proxies personally, by telephone or by telegram.
Brokers, nominees, custodians and fiduciaries are requested to forward
solicitation materials to obtain voting instructions from beneficial owners of
stock registered in their names, and the Corporation will reimburse such
parties for their reasonable charges and expenses in connection therewith.
 
San Diego, California
February 5, 1999
 
                                      22
<PAGE>
 
                                 FORM OF PROXY

                            THERMOTREX CORPORATION

      PROXY FOR ANNUAL MEETING OF STOCKHOLDERS TO BE HELD MARCH 11, 1999

         THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS.

     The undersigned hereby appoints Theo Melas-Kyriazi, John T. Keiser and Gary
S. Weinstein, or any one of them in the absence of the others, as attorneys and 
proxies of the undersigned, with full power of substitution, for and in the name
of the undersigned, to represent the undersigned at the Annual Meeting of 
Stockholders of ThermoTrex Corporation, a Delaware corporation (the "Company"), 
to be held on Thursday, March 11, 1999 at 10:00 a.m. at the Westin Hotel, 70 
Third Avenue, Waltham, Massachusetts and at any adjournment or postponement 
thereof, and to vote all shares of common stock of the Company standing in the 
name of the undersigned on January 20, 1999, with all of the powers the 
undersigned would possess if personally present at such meeting.

           (IMPORTANT -- TO BE SIGNED AND DATED ON THE REVERSE SIDE)


<PAGE>
 
                        Please date, sign and mail your
                     proxy card back as soon as possible!

                        Annual Meeting of Stockholders
                            THERMOTREX CORPORATION

                                March 11, 1999



- --------------- Please Detach and Mail in the Envelope Provided ---------------

[X]  Please mark your 
     votes as in this 
     example.

1.   ELECTION OF      FOR     WITHHELD     Nominees:  Morton Collins
     DIRECTORS OF     [_]       [_]                   Peter O. Crisp
     THE COMPANY                                      Paul F. Ferrari
     (see reverse).                                   George N. Hatsopoulos
                                                      Robert C. Howard
FOR all nominees listed at right,                     John T. Keiser
except authority to vote withheld                     Gary S. Weinstein
for the following nominees (if any).                  Nicholas T. Zervas

- -----------------------------------

2.   In their discretion on such other matters as may properly come before the 
     Meeting.

The shares represented by this Proxy will be voted "FOR" the proposals set forth
above if no instruction to the contrary is indicated or if no instruction is 
given.

Copies of the Notice of Meeting and of the Proxy Statement have been received by
the undersigned.




SIGNATURE(S)                                      DATE
             ----------------------------------        -----------------------

NOTE:  This proxy should be dated, signed by the shareholder(s) exactly as his
       or her name appears hereon, and returned promptly in the enclosed
       envelope. Persons signing in a fiduciary capacity should so indicate. If
       shares are held by joint tenants or as community property, both should
       sign.






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