Document:

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                                                                   Exhibit 10.27

                                             REGISTRATION RIGHTS AGREEMENT dated
                                    as of February __, 2000, between OPUS360
                                    CORPORATION, a Delaware corporation (the
                                    "Corporation"), and the PM SECURITYHOLDERS
                                    (as defined herein).

            The PM Securityholders have been issued shares of the Corporation's
Common Stock (as defined below) pursuant to that certain agreement and plan of
merger (the "Merger Agreement") dated as of January 30, 2000, among the
Corporation, Opus PM Acquisition Corp., a Delaware corporation and a wholly
owned subsidiary of the Corporation ("OpusPM"), PeopleMover, Inc., a Delaware
corporation ("PeopleMover"), the Stockholder Representative (as defined in
Section 8.5 of the Merger Agreement), and the PM Securityholders (as to Article
II, Section 4.2 and Article IX thereof, and as to certain PM Securityholders,
Article VIII thereof). The Corporation and the PM Securityholders deem it to be
in their respective best interests to enter into this Agreement to set forth the
rights of the PM Securityholders in connection with public offerings and sales
of the Common Stock.

            NOW, THEREFORE, in consideration of the premises and mutual
covenants and obligations hereinafter set forth, the parties hereto agree as
follows:

      1. Definitions.

            As used herein, the following terms shall have the following
respective meanings:

            "Additional Registrable Shares" means, at any time with respect to
any Additional Securityholder, the Registrable Shares held by such Additional
Securityholder (but only if such Additional Securityholder is entitled (but not
pursuant to this Agreement) to the registration of such Registrable Shares by
the Corporation under the Securities Act for sale to the public).

            "Additional Securityholder" means any holder of Restricted
Securities who or which is entitled (but not pursuant to this Agreement) to the
registration of such Restricted Securities by the Corporation under the
Securities Act for sale to the public.

            "Agreement" means this Registration Rights Agreement, as amended,
supplemented or otherwise modified from time to time.

            "Business Day" means any day, other than a Saturday, Sunday or a day
on which banking institutions in the State of New York are authorized or
obligated by law or executive order to close.

            "Common Stock" means the common stock, par value $.001 per share, of
the Corporation (and such other class of common stock of the Corporation, or any
successor thereto, into which the Common Stock may be converted or reclassified,
and all references herein to the Common Stock shall mean such other class of
common stock, if applicable).

            "Conversion Shares" means the Series A Conversion Shares and the
Series B Conversion Shares.
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            "Corporation" has the meaning assigned to such term in the caption
to this Agreement.

            "Exchange Act" means the Securities Exchange Act of 1934, as
amended, or any successor federal statute, and the rules and regulations of the
SEC promulgated thereunder, all as the same may from time to time be in effect.

            "Governmental Entity" means any government or political subdivision
or department thereof, any governmental or regulatory body, commission, board,
bureau, agency or instrumentality, or any court or arbitrator or alternative
dispute resolution body, in each case whether federal, state, local or foreign.

            "Initial Common Shares" means the Registrable Shares that are (i)
shares of Common Stock issued or issuable to Ari Horowitz, Carlos Cashman, Shawn
Kreloff, William Bahr, Brett Prager, Richard McCann, Alex Lapins, Anthony
Schmitz, Bruce Gilpin, Wayne Tsuchitani or USWeb/CKS Corporation or (ii) shares
of Common Stock issued on or with respect to the shares of Common Stock referred
to in clause (i) above.

            "Initial Warrants" means (i) the warrants dated May 19, 1999 and
August 17, 1999 issued by the Corporation to Silicon Valley Bank to purchase
shares of Common Stock, (ii) the warrants dated December 24, 1998 issued by the
Corporation to each of Gerald Cashman, G&R Partnership, LP, Leonard Horowitz,
Irwin Lieber and Barry Rubenstein to purchase shares of Common Stock, and (iii)
the warrants dated September 3, 1999 and January 15, 2000 issued by the
Corporation to Greenhill & Co., LLC.

            "Law" means any foreign, federal, state or local law, statute,
treaty, rule, directive, regulation, ordinance or similar provision having the
force or effect of law or any Order.

            "Majority of the PM Securityholders" means those PM Securityholders
who or which hold in the aggregate in excess of 50% of all of the PM Registrable
Shares.

            "Material Transaction" shall mean any material transaction in which
the Corporation or any of its Subsidiaries proposes to engage or is engaged,
including a purchase or sale of assets or securities, financing, merger,
consolidation, tender offer or any other transaction or event that would require
disclosure pursuant to the Exchange Act if the Corporation were a reporting
company thereunder, and with respect to which the Board of Directors of the
Corporation reasonably has determined in good faith that compliance with this
Agreement may reasonably be expected to either materially interfere with the
Corporation's or such Subsidiary's ability to consummate such transaction in a
timely fashion or require the Corporation to disclose material, non-public
information prior to such time as it would otherwise be required to be
disclosed.

            "Orders" means any enforceable judgments, writs, decrees,
declarations, injunctions, orders, stipulations, compliance agreement or
settlement agreements issued or imposed by, or entered into with, a Governmental
Entity.

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            "Other Shares" means, at any time, those shares of Common Stock
which do not constitute Primary Shares, PM Registrable Shares or Additional
Registrable Shares.

            "Person" shall be construed as broadly as possible and shall include
an individual, a corporation (including a not-for-profit corporation), a
company, an association, a joint stock company, a partnership (including a
limited liability partnership), a limited liability company, a joint venture, a
trust or an unincorporated organization and a Governmental Entity.

            "PM Registrable Shares" means the Registrable Shares that are (i)
shares of Common Stock issued to the Persons listed on Schedule I on the date
hereof, but only to the extent of the number of such shares of Common Stock set
forth opposite their names on Schedule I (which aggregate number shall not
exceed ___________ shares of Common Stock) or (ii) shares of Common Stock issued
on or with respect to the shares of Common Stock referred to in clause (i)
above.

            "PM Securityholders" means, collectively, (i) the Persons listed on
Schedule I on the date hereof, (ii) any other Persons listed on Schedule I from
time to time, and (iii) any purchaser, assignee or other transferee of
Restricted Securities held by any of the foregoing in a purchase, assignment or
other transfer permitted under Section 17 and in which such purchaser, assignee
or other transferee has complied in full with the joinder requirements set forth
in Section 17. Upon the addition of each new PM Securityholder as a party to
this Agreement, the Corporation shall amend Schedule I solely to reflect the
name and address of such new PM Securityholder, and the Corporation shall
distribute to the PM Securityholders such amended Schedule I.

            "Primary Shares" means, at any time, the authorized but unissued
shares of Common Stock or Common Stock held by the Corporation in its treasury.

            "Prospectus" means the prospectus included in a Registration
Statement, including any prospectus subject to completion, and any such
prospectus as amended or supplemented by any prospectus supplement with respect
to the terms of the offering of any portion of the PM Registrable Shares and, in
each case, by all other amendments and supplements to such prospectus, including
post-effective amendments, and in each case including all material incorporated
by reference therein.

            "Public Offering" means a public offering of Common Stock pursuant
to a registration statement declared effective under the Securities Act, except
that a Public Offering shall not include an offering of securities to be issued
as consideration in connection with a business acquisition or an offering of
securities issuable pursuant to an employee benefit plan.

            "Registering PM Securityholders" means, with respect to any
registration of PM Registrable Shares, those PM Securityholders who or which
hold the PM Registrable Shares included in such registration.

            "Registrable Shares" means, at any time with respect to any PM
Securityholder or Additional Securityholder, the shares of Common Stock held by
such PM Securityholder or Additional Securityholder that constitute Restricted
Securities. For purposes of this definition, a

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PM Securityholder or Additional Securityholder shall be deemed to be the holder
of shares of Common Stock whenever such PM Securityholder or Additional
Securityholder has the right to acquire, directly or indirectly, such Common
Stock upon the conversion or exercise of Restricted Securities (but disregarding
any restrictions or limitations upon the exercise of such right), whether or not
such acquisition has actually been effected.

            "Registration Date" means the date upon which the registration
statement pursuant to which the Corporation shall have initially registered
shares of Common Stock under the Securities Act for sale to the public shall
have been declared effective.

            "Registration Statement" means any registration statement of the
Corporation which covers any of the PM Registrable Shares, and all amendments
and supplements to any such Registration Statement, including post-effective
amendments, in each case including the Prospectus contained therein, all
exhibits thereto and all material incorporated by reference therein.

            "Restricted Securities" means, at any time, with respect to any
Person, the shares of Common Stock, the shares of Series A Preferred Stock, the
shares of Series B Preferred Stock, the Initial Warrants and any other
securities which by their terms are directly or indirectly exercisable or
exchangeable for or convertible into any of the foregoing securities, and any
securities received on or with respect to any of the foregoing securities, in
each case which are held by such Person. As to particular securities
constituting Restricted Securities, such securities shall cease to be Restricted
Securities when (A) they have been registered under the Securities Act, the
Registration Statement in connection therewith has been declared effective and
such Restricted Securities have been disposed of pursuant to and in the manner
described in such effective Registration Statement, (B) they are eligible to be
sold or distributed by the holder thereof pursuant to Rule 144 of the Securities
Act within any consecutive three-month period (including, without limitation,
subsection (k) of Rule 144) without volume limitations, (C) they have been
otherwise transferred and new certificates or other evidences of ownership for
them not bearing a restrictive legend and not subject to any stop transfer order
or other restriction on transfer shall have been delivered by the Corporation or
the issuer of other securities issued in exchange for the Restricted Securities,
or (D) they have ceased to be outstanding.

            "SEC" means the United States Securities and Exchange Commission.

            "securities" means, with respect to any Person, such Person's
"securities," as defined in Section 2(1) of the Securities Act.

            "Securities Act" means the Securities Act of 1933, as amended, or
any successor federal statute, and the rules and regulations of the SEC
promulgated thereunder, all as the same may from time to time be in effect.

            "Series A Conversion Shares" means the Registrable Shares that are
(i) shares of Common Stock issued or issuable upon the conversion of Series A
Preferred Stock, (ii) shares of Common Stock issued on or with respect to the
shares of Common Stock referred to in clause (i) above or (iii) shares of Common
Stock issued on or with respect to the Series A Preferred Stock.

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            "Series A Preferred Stock" means the Corporation's Series A
Convertible Preferred Stock, par value $.001 per share.

            "Series B Conversion Shares" means the Registrable Shares that are
(i) shares of Common Stock issued or issuable upon the conversion of Series B
Preferred Stock, (ii) shares of Common Stock issued on or with respect to the
shares of Common Stock referred to in clause (i) above or (iii) shares of Common
Stock issued on or with respect to the Series B Preferred Stock.

            "Series B Preferred Stock" means the Corporation's Series B
Convertible Preferred Stock, par value $.001 per share.

            "Shares" means the Registrable Shares, the PM Registrable Shares,
the Additional Registrable Shares, the SP Registrable Shares, the Initial Common
Shares, the Conversion Shares and the Warrant Shares.

            "SP Registrable Shares" means (i) any Additional Registrable Shares
issued by the Corporation to any Strategic Partner in connection with such
Strategic Partner's entry into a strategic arrangement with the Corporation for
the provision by either party to the other party of goods, services, technology,
expertise or other value and (ii) any other Additional Registrable Shares issued
on or with respect to the Additional Registrable Shares referred to in clause
(i) above.

            "Stockholders' Agreement" means the Stockholders' Agreement dated as
of December 24, 1998, among the Company and the other parties thereto, as
amended, supplemented, modified and in effect from time to time.

            "Strategic Partner" means a Person who or which, at the time in
question, has entered into, or is simultaneously entering into or has agreed to
enter into, a strategic arrangement with the Corporation for the provision by
either party to the other party of goods, services, technology, expertise or
other value.

            "Subsidiary" means, as to any Person, any other Person of which more
than 50% of the shares of the voting stock or other voting interests are owned
or controlled, or the ability to select or elect 50% or more of the directors or
similar managers is held, directly or indirectly, by such first Person or one or
more of its Subsidiaries.

            "Warrant Shares" means the Registrable Shares that are (i) shares of
Common Stock issued or issuable upon the exercise of the Initial Warrants, (ii)
shares of Common Stock issued on or with respect to the shares of Common Stock
referred to in clause (i) above or (iii) shares of Common Stock issued on or
with respect to the Initial Warrants.

      2. Piggyback Registration.

            (a) If the Corporation proposes for any reason to register Primary
Shares, Additional Registrable Shares or Other Shares under the Securities Act
after the closing of an initial Public Offering of Common Stock (other than on
Form S-4 or Form S-8 promulgated under the Securities Act or any successor forms
thereto), it shall give written notice to the PM

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Securityholders of its intention to so register such Primary Shares, Additional
Registrable Shares or Other Shares at least 20 days before the initial filing of
the registration statement for such Primary Shares, Additional Registrable
Shares or Other Shares and, upon the written request, delivered to the
Corporation within 10 days after delivery of any such written notice by the
Corporation, of any PM Securityholder to include in such registration PM
Registrable Shares (which written request shall specify the number of PM
Registrable Shares proposed to be included in such registration) and shall state
the request of such PM Securityholder to sell or dispose of such PM Registrable
Shares), the Corporation shall use its reasonable best efforts to cause all such
PM Registrable Shares to be included in such registration on the same terms and
conditions as the Primary Shares, Additional Registrable Shares or Other Shares
otherwise being sold or disposed of in such registration; provided, however, if
the managing underwriter(s) advise the Corporation that the inclusion of all or
any portion of the PM Registrable Shares, Primary Shares, Additional Registrable
Shares and/or Other Shares proposed to be included in such registration would
interfere with the successful marketing (including pricing) of all or any
portion of such securities, then the number of PM Registrable Shares, Primary
Shares, Additional Registrable Shares and/or Other Shares proposed to be
included in such registration shall be included in the following order:

            (i) If such registration is initiated by the Corporation to register
      Primary Shares, Other Shares or Additional Registrable Shares not
      constituting Initial Common Shares, Conversion Shares, Warrant Shares or
      SP Registrable Shares, or by any holder of the foregoing:

                  (A) first, the Primary Shares;

                  (B) second, the Additional Registrable Shares constituting SP
            Registrable Shares, Initial Common Shares, Conversion Shares or
            Warrant Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares
            allocated between (x) the Additional Securityholders who or which
            have requested the inclusion of SP Registrable Shares in such
            registration on the one hand and (y) the other Additional
            Securityholders who or which have requested the inclusion of
            Additional Registrable Shares constituting Initial Common Shares,
            Conversion Shares or Warrant Shares in such registration on the
            other hand, in proportion to the aggregate number of Shares held by
            each such group of Additional Securityholders at the time of such
            registration, with the aggregate number of Shares allocated to the
            Additional Securityholders described in each of clauses (x) and (y)
            above further allocated among such Additional Securityholders in
            accordance with the applicable provisions of any agreements between
            the Corporation and such Additional Securityholders, as amended,
            supplemented or otherwise modified from time to time and in effect
            at the time of such registration, or, in the absence of any
            applicable provisions (i) with respect to the Additional
            Securityholders described in clause (x) above, pro rata among all
            such Additional Securityholders based upon the number of Additional
            Registrable Shares constituting SP Registrable Shares held by each
            such Additional Securityholder at the time of such registration, and
            (ii) with respect to the Additional

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            Securityholders described in clause (y) above, pro rata among all
            such Additional Securityholders based upon the number of Additional
            Registrable Shares constituting Initial Common Shares, Conversion
            Shares or Warrant Shares held by each such Additional Securityholder
            at the time of such registration);

                  (C) third, the PM Registrable Shares requested by the PM
            Securityholders to be included in such registration (or, if
            necessary, such Shares pro rata among all such PM Securityholders
            based on the aggregate number of PM Registrable Shares held by each
            such Person at the time of such registration);

                  (D) fourth, the Additional Registrable Shares not constituting
            Initial Common Shares, Conversion Shares, Warrant Shares or SP
            Registrable Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares
            allocated among all such Additional Securityholders in accordance
            with the applicable provisions of any agreements between the
            Corporation and such Additional Securityholders, as amended,
            supplemented or otherwise modified from time to time and in effect
            at the time of such registration, or, in the absence of any
            applicable provisions, pro rata among all such Additional
            Securityholders based upon the number of Additional Registrable
            Shares not constituting Initial Common Shares, Conversion Shares,
            Warrant Shares or SP Registrable Shares held by each such Additional
            Securityholder at the time of such registration); and

                  (E) fifth, the Other Shares.

            (ii) If such registration is initiated by Additional Securityholders
      who or which request the inclusion of their Additional Registrable Shares
      constituting SP Registrable Shares in such registration:

                  (A) first, the Additional Registrable Shares constituting SP
            Registrable Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares pro
            rata among all such Additional Securityholders based on the
            aggregate number of SP Registrable Shares held by each such Person
            at the time of such registration);

                  (B) second, the Additional Registrable Shares constituting
            Initial Common Shares, Conversion Shares or Warrant Shares requested
            by the Additional Securityholders to be included in such
            registration (or, if necessary, such Shares allocated among all such
            Additional Securityholders in accordance with the applicable
            provisions of any agreements between the Corporation and such
            Additional Securityholders, as amended, supplemented or otherwise
            modified from time to time and in effect at the time of such
            registration, or, in the absence of any applicable provisions, pro
            rata among all such Additional Securityholders based upon the number
            of Additional Registrable Shares constituting Initial Common Shares,
            Conversion Shares or Warrant Shares held by each such Additional
            Securityholder at the time of such registration);

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                  (C) third, the Primary Shares;

                  (D) fourth, the PM Registrable Shares requested by the PM
            Securityholders to be included in such registration (or, if
            necessary, such Shares pro rata among all such PM Securityholders
            based on the aggregate number of PM Registrable Shares held by each
            such Person at the time of such registration);

                  (E) fifth, the Additional Registrable Shares not constituting
            Initial Common Shares, Conversion Shares, Warrant Shares or SP
            Registrable Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares
            allocated among all such Additional Securityholders in accordance
            with the applicable provisions of any agreements between the
            Corporation and such Additional Securityholders, as amended,
            supplemented or otherwise modified from time to time and in effect
            at the time of such registration, or, in the absence of any
            applicable provisions, pro rata among all such Additional
            Securityholders based upon the number of Additional Registrable
            Shares not constituting Initial Common Shares, Conversion Shares,
            Warrant Shares or SP Registrable Shares held by each such Additional
            Securityholder at the time of such registration); and

                  (F) six, the Other Shares.

            (iii) If such registration is initiated by Additional
      Securityholders who or which request the inclusion of Additional
      Registrable Shares constituting Initial Common Shares, Conversion Shares
      or Warrant Shares in such registration:

                  (A) first, the Additional Registrable Shares constituting
            Initial Common Shares, Conversion Shares or Warrant Shares requested
            by the Additional Securityholders to be included in such
            registration (or, if necessary, such Shares allocated among all such
            Additional Securityholders in accordance with the applicable
            provisions of any agreements between the Corporation and such
            Additional Securityholders, as amended, supplemented or otherwise
            modified from time to time and in effect at the time of such
            registration, or, in the absence of any applicable provisions, pro
            rata among all such Additional Securityholders based upon the number
            of Additional Registrable Shares constituting Initial Common Shares,
            Conversion Shares or Warrant Shares held by each such Additional
            Securityholder at the time of such registration);

                  (B) second, the Additional Registrable Shares constituting SP
            Registrable Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares pro
            rata among all such Additional Securityholders based on the
            aggregate number of SP Registrable Shares held by each such
            Additional Securityholder at the time of such registration);

                  (C) third, the Primary Shares;

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                  (D) fourth, the PM Registrable Shares requested by the PM
            Securityholders to be included in such registration (or, if
            necessary, such Shares pro rata among all such PM Securityholders
            based on the aggregate number of PM Registrable Shares held by each
            such PM Securityholder at the time of such registration);

                  (E) fifth, the Additional Registrable Shares not constituting
            Initial Common Shares, Conversion Shares, Warrant Shares or SP
            Registrable Shares requested by the Additional Securityholders to be
            included in such registration (or, if necessary, such Shares
            allocated among all such Additional Securityholders in accordance
            with the applicable provisions of any agreements between the
            Corporation and such Additional Securityholders, as amended,
            supplemented or otherwise modified from time to time and in effect
            at the time of such registration, or, in the absence of any
            applicable provisions, pro rata among all such Additional
            Securityholders based upon the number of Additional Registrable
            Shares not constituting Initial Common Shares, Conversion Shares,
            Warrant Shares or SP Registrable Shares held by each such Additional
            Securityholder at the time of such registration); and

                  (F) six, the Other Shares.

            (b) Anything contained in this Agreement to the contrary
notwithstanding, the Corporation shall not be obligated pursuant to Section 2(a)
to include all or any portion of the PM Registrable Shares of the PM
Securityholders in more than one registration of Primary Shares, Additional
Registrable Shares and/or Other Shares under the Securities Act after the
closing of an initial Public Offering of Common Stock (with the participation of
the PM Securityholders in such registration being subject to the terms and
conditions of Section 2(a)). The Majority of the PM Securityholders in
compliance with this Section 2 shall determine the applicable registration
statement with respect to which a request for the registration of PM Registrable
Shares shall be submitted to the Corporation pursuant to Section 2(a). The PM
Securityholders requesting a registration of PM Registrable Shares pursuant to
Section 2(a) shall provide written notice to the Corporation of the satisfaction
of such requirement; provided, however, that in no event shall such one
registration request be fulfilled if such registration statement is withdrawn
for any reason prior to effectiveness; and provided, further, however, the
Corporation shall have fulfilled its obligations pursuant to Section 2(a) if at
least 25% of the aggregate number of PM Registrable Shares requested by PM
Securityholders to be registered on such registration statement are included in
such registration statement at the time of its initial effectiveness.

      3. Holdback Agreement.

            If the Corporation at any time shall register shares of Common Stock
under the Securities Act in an aggregate amount of at least $5,000,000
(excluding any registrations on Form S-4 or S-8) for sale to the public, no PM
Securityholder shall sell publicly, make any short sale of, grant any option for
the purchase of, or otherwise dispose publicly of, any capital stock of the
Corporation (other than those shares of Common Stock included in such
registration

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pursuant to Section 2(a)) without, in each such instance, the prior written
consent of the Corporation, for a period designated by the Corporation in
writing to the PM Securityholders, which period shall begin not more than 15
days prior to the expected date of the effectiveness of the registration
statement pursuant to which such public offering shall be made and shall not
last more than 180 days after the date on which such registration statement
became effective, whether or not such PM Securityholder participates in such
registration. Each PM Securityholder agrees that the Corporation may instruct
its transfer agent to place stop transfer notations on its records to enforce
this Section 3.

      4. Preparation and Filing.

            If the Corporation is obligated pursuant to Section 2 to use its
reasonable best efforts to cause any PM Registrable Shares to be included in a
registration of Primary Shares, Additional Registrable Shares or Other Shares
otherwise being sold in such registration, the Corporation shall, subject to,
and only to the extent not contrary to or inconsistent with, the terms and
conditions on which such Primary Shares, Additional Registrable Shares or Other
Shares otherwise being sold in such registration:

            (a) use its reasonable best efforts to cause the Registration
Statement that registers such PM Registrable Shares to become and remain
effective until the earlier to occur of (i) 90 days from the date of the
effectiveness of such Registration Statement and (ii) such time as all of such
PM Registrable Shares have been disposed of;

            (b) furnish, at least five Business Days before filing the
Registration Statement that registers such PM Registrable Shares, a Prospectus
relating thereto and any amendments or supplements relating to such Registration
Statement or Prospectus, to one counsel designated in writing by the Majority of
the PM Securityholders (the "PM Securityholders' Counsel"), copies of all such
documents proposed to be filed with the SEC (it being understood that such five
Business Day period need not apply to successive drafts of the same document
proposed to be filed so long as such successive drafts are supplied to the PM
Securityholders' Counsel in advance of the proposed filing by a period of time
that is customary and reasonable under the circumstances);

            (c) prepare and file with the SEC such amendments and supplements to
such Registration Statement and the Prospectus used in connection therewith as
may be necessary to keep such Registration Statement effective until the earlier
to occur of (i) 90 days or (ii) such time as all of such PM Registrable Shares
have been disposed of, and to comply with the provisions of the Securities Act
with respect to the sale or other disposition of such PM Registrable Shares;

            (d) notify the PM Securityholders' Counsel promptly in writing of
(i) any comments by the SEC with respect to such Registration Statement or
Prospectus, or any request by the SEC for the amending or supplementing thereof
or for additional information with respect thereto, (ii) the issuance by the SEC
of any stop order suspending the effectiveness of such Registration Statement or
Prospectus or any amendment or supplement thereto or the initiation or
threatening of any proceedings for that purpose (and the Corporation shall use
its reasonable best efforts to prevent the issuance thereof or, if issued, to
obtain its withdrawal) and (iii) the receipt

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by the Corporation of any notification with respect to the suspension of the
qualification of such PM Registrable Shares for sale in any jurisdiction or the
initiation or threatening of any proceeding(s) for such purposes;

            (e) use its reasonable best efforts to register or qualify such PM
Registrable Shares under such other securities or blue sky laws of such
jurisdictions as any Registering PM Securityholder may reasonably request, to
keep such registrations or qualifications in effect for so long as such
Registration Statement covering such PM Registrable Shares remains in effect and
do any and all other acts and things which may be reasonably necessary or
advisable to enable such Registering PM Securityholder to consummate the sale or
disposition in such jurisdictions of the PM Registrable Shares owned by such
Registering PM Securityholder; provided, however, that the Corporation will not
be required to qualify generally to do business, to subject itself to general
taxation or consent to general service of process in any jurisdiction where it
would not otherwise be required to do so but for this Section 4(e) or to provide
any material undertaking or make any changes in its bylaws or certificate of
incorporation which its Board of Directors determines to be contrary to or not
in the best interests of the Corporation;

            (f) furnish to each Registering PM Securityholder such number of
copies of a summary Prospectus, if any, or other Prospectus, including a
preliminary Prospectus, in conformity with the requirements of the Securities
Act, and such other documents as such Registering PM Securityholder may
reasonably request in order to facilitate the public sale or other disposition
of the PM Registrable Shares held by Registering PM Securityholder;

            (g) notify on a timely basis each Registering PM Securityholder at
any time when a Prospectus relating to such PM Registrable Shares is required to
be delivered under the Securities Act within the appropriate period specified in
Section 4(a), of the happening of any event known to the Corporation as a result
of which the Prospectus included in such Registration Statement, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in light of the circumstances then existing and, at the
request of such Registering PM Securityholder, prepare and furnish to such
Registering PM Securityholder a reasonable number of copies of a supplement to
or an amendment of such Prospectus as may be necessary so that, as thereafter
delivered to the offerees of such PM Registrable Shares, such Prospectus shall
not include an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein
not misleading in light of the circumstances then existing;

            (h) subject to the execution of confidentiality or similar
agreements in form and substance satisfactory to the Corporation, make
available, upon reasonable notice and during normal business hours, for
inspection by the Registering PM Securityholders any underwriter participating
in any disposition pursuant to such Registration Statement and any attorney,
accountant or other agent retained by the Registering PM Securityholders or
underwriter (collectively, the "Inspectors"), all pertinent financial and other
records, pertinent corporate documents and properties of the Corporation
(collectively, the "Records"), as shall be reasonably necessary to enable such
Persons to exercise their due diligence responsibility, and cause the
Corporation's officers, directors and employees to supply all information
(together with the

                                       11
<PAGE>

Records, the "Information") reasonably requested by any such Inspector in
connection with such Registration Statement (any of the Information which the
Corporation determines in good faith to be confidential, and of which
determination the Inspectors are so notified, shall not be disclosed by the
Inspectors, unless (i) the disclosure of such Information is necessary to avoid
or correct a misstatement or omission in the Registration Statement, (ii) the
release of such Information is ordered pursuant to a subpoena or other order
from a court of competent jurisdiction or, upon the written advice of counsel,
is otherwise required by law, or (iii) such Information has been made generally
available to the public; and each Registering PM Securityholder agrees that it
will, upon learning that disclosure of such Information is sought in a court of
competent jurisdiction, give notice to the Corporation and allow the
Corporation, at the Corporation's expense, to undertake appropriate action to
prevent disclosure of the Information deemed confidential by the Corporation);

            (i) use its reasonable best efforts to obtain from its independent
certified public accountants "cold comfort" letters in customary form and at
customary times and covering matters of the type customarily covered by cold
comfort letters;

            (j) use its reasonable best efforts to obtain from its counsel an
opinion or opinions in customary form;

            (k) provide a transfer agent and registrar (which may be the same
Person and which may be the Corporation) for such PM Registrable Shares;

            (l) issue to any underwriter to which any Registrable PM
Securityholder may sell such PM Registrable Shares in such offering,
certificates evidencing such PM Registrable Shares;

            (m) list such PM Registrable Shares on any national securities
exchange on which any shares of Common Stock are listed or, if Common Stock is
not listed on a national securities exchange, use its reasonable best efforts to
qualify such PM Registrable Shares for inclusion on the national automated
quotation system of the National Association of Securities Dealers, Inc. (the
"NASD"), or such other national securities exchange as the holders of a majority
of such PM Registrable Shares shall reasonably request in writing; and

            (n) otherwise use its reasonable best efforts to comply with all
applicable rules and regulations of the SEC and make generally available to its
securityholders, as soon as reasonably practicable, earnings statements (in form
complying with Rule 158 under the Securities Act) covering a 12-month period
beginning not later than the first day of the Corporation's fiscal quarter next
following the effective date of the Registration Statement.

            Each Registering PM Securityholder, upon the receipt of any notice
from the Corporation of any event of the kind described in Section 4(h), shall
forthwith discontinue disposition of PM Registrable Shares pursuant to the
Registration Statement until such Registering PM Securityholder's receipt of
copies of the supplemented or amended Prospectus contemplated by Section 4(h),
and, if so directed by the Corporation, such Registering PM Securityholder shall
deliver to the Corporation all copies, other than permanent file copies then in
such PM Securityholder's possession, of the Prospectus covering such PM
Registrable Shares

                                       12
<PAGE>

at the time of receipt of such notice or, if so directed by the Corporation,
destroy all such copies and deliver to the Corporation a certificate of
destruction in respect thereof.

      5. Expenses.

            All expenses incurred by the Corporation in complying with Section
4, including, without limitation, all registration and filing fees (including
all expenses incident to filing with the NASD), fees and expenses of complying
with securities and blue sky laws, printing expenses, fees, expenses and
disbursements of the Corporation's counsel and accountants and fees, expenses
and disbursements (in an aggregate amount not to exceed $7,500) of the PM
Securityholders' Counsel shall be paid or satisfied by the Corporation;
provided, however, that all underwriting discounts and selling commissions
applicable to the PM Registrable Shares shall not be borne by the Corporation
and shall be borne by the Registering PM Securityholders selling such
Registrable Securities, in proportion to the number of PM Registrable Shares
sold by each such Registering PM Securityholder.

      6. Indemnification.

            (a) In connection with any registration of any PM Registrable Shares
under the Securities Act pursuant to this Agreement, the Corporation shall
indemnify and hold harmless each holder of such PM Registrable Shares, each
underwriter, broker or any other Person acting on behalf of any such holder and
each other Person, if any, who controls any of the foregoing Persons within the
meaning of the Securities Act, against any losses, claims, damages or
liabilities, joint or several, (or actions in respect thereof) to which any of
the foregoing Persons may become subject under the Securities Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon an untrue statement or alleged untrue
statement of a material fact contained in the Registration Statement, any
preliminary Prospectus or final Prospectus contained therein or otherwise filed
with the SEC, any amendment or supplement thereto or any document incident to
registration or qualification of any PM Registrable Shares, or arise out of or
are based upon the omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading or, with respect to any Prospectus, necessary to make the statements
therein in light of the circumstances under which they were made not misleading,
or any violation by the Corporation of the Securities Act or state securities or
blue sky laws applicable to the Corporation and relating to action or inaction
required of the Corporation in connection with such registration or
qualification under such state securities or blue sky laws, and the Corporation
shall promptly reimburse each such holder, underwriter, broker or other Person
acting on behalf of any such holder and each such controlling Person for any
legal or other expenses incurred by any of them in connection with investigating
or defending any such loss, claim, damage, liability or action; provided,
however, that the Corporation shall not be liable (i) to any such Person to the
extent that any such loss, claim, damage or liability arises out of or is based
upon an untrue statement or alleged untrue statement or omission or alleged
omission made in said Registration Statement, preliminary Prospectus, final
Prospectus, amendment, supplement or document incident to registration or
qualification of any PM Registrable Shares in reliance upon and in conformity
with information furnished to the Corporation or such underwriter by the PM
Securityholders, or a Person duly acting on the PM Securityholder's

                                       13
<PAGE>

behalf, by written materials provided by the PM Securityholders, or a Person
duly acting on the PM Securityholder's behalf, specifically for use in
connection with the preparation thereof, and (ii) for any amounts paid in
settlement of any such loss, claim, damage or liability if such settlement is
effected without the prior written consent of the Corporation which consent
shall not be unreasonably withheld or delayed; provided further, however, that
the foregoing indemnity agreement is subject to the condition that, insofar as
it relates to any untrue statement, allegedly untrue statement, omission or
alleged omission made in any preliminary Prospectus but eliminated or remedied
in the Prospectus, as amended or supplemented (filed pursuant to Rule 424 of the
Securities Act), such indemnity agreement shall not inure to the benefit of any
indemnified party from whom the Person asserting any loss, claim, damage,
liability or expense purchased the PM Registrable Shares which are the subject
thereof, if a copy of such Prospectus, as amended or supplemented, had been
timely made available to such indemnified Person and such Prospectus, as amended
or supplemented, was not delivered to such Person with or prior to the written
confirmation of the sale of such PM Registrable Shares to such Person.

            (b) In connection with any registration of PM Registrable Shares
under the Securities Act pursuant to this Agreement, each holder of PM
Registrable Shares shall, severally and not jointly, indemnify and hold harmless
(in the same manner and to the same extent as set forth in Section 6(a)) the
Corporation, each director of the Corporation who signs such Registration
Statement, each officer of the Corporation who signs such Registration
Statement, each other holder of PM Registrable Shares, Primary Shares,
Additional Registrable Shares or Other Shares included in such Registration
Statement, each underwriter, broker or any other Person acting on behalf of any
such holder and each other Person, if any, who controls any of the foregoing
Persons within the meaning of the Securities Act with respect to any statement
contained in or omission from such Registration Statement, any preliminary
Prospectus or final Prospectus contained therein or otherwise filed with the
SEC, any amendment or supplement thereto or any document incident to
registration or qualification of any PM Registrable Shares, if such statement or
omission was made in reliance upon and in conformity with information furnished
to the Corporation or such underwriter by written materials provided by such PM
Securityholder, or a Person duly acting on such PM Securityholder's behalf,
specifically for use in connection with the preparation thereof; provided,
however, that the maximum amount of liability in respect of such indemnification
shall be limited, in the case of each holder of PM Registrable Shares, to an
amount equal to the net proceeds actually received by such holder from the sale
of PM Registrable Shares effected pursuant to such registration.

            (c) Promptly after receipt by an indemnified party of written notice
of the commencement of any action involving a claim referred to in Section 6(a)
or Section 6(b), such indemnified party will, if a claim in respect thereof is
made against an indemnifying party, promptly give written notice to the latter
of the commencement of such action (provided that an indemnified party's failure
to give such notice in a timely manner shall only relieve the indemnification
obligations of an indemnifying party to the extent such indemnifying party is
prejudiced by such failure). In case any such action is brought against an
indemnified party, the indemnifying party will be entitled to participate in and
to assume the defense thereof, jointly with any other indemnifying party
similarly notified in writing to the extent that it may wish, with counsel
reasonably satisfactory to such indemnified party, and after notice from the
indemnifying party to such indemnified party of its election so to assume the
defense thereof, the

                                       14
<PAGE>

indemnifying party shall not be responsible for any legal or other expenses
subsequently incurred by the indemnified party in connection with the defense
thereof; provided, however, that if any indemnified party shall have reasonably
concluded based upon the advice of external counsel that there may be one or
more legal or equitable defenses available to such indemnified party which
conflict with those available to the indemnifying party, or that such claim or
litigation involves or could have an effect upon matters beyond the scope of the
indemnity agreement provided in this Section 6, the indemnifying party shall not
have the right to assume the defense of such action on behalf of such
indemnified party and such indemnifying party shall reimburse such indemnified
party and any Person controlling such indemnified party for that portion of the
reasonable fees, expenses and reasonable disbursements of any one counsel
satisfactory to the indemnifying party which is reasonably related to the
matters covered by the indemnity agreement provided in this Section 6. The
indemnifying party shall not be liable to indemnify any indemnified party for
any settlement of any claim or action effected without the written consent of
the indemnifying party. Unless otherwise agreed to in writing by the indemnified
party, the indemnifying party may not settle any claim or action brought against
an indemnified party unless such indemnified party is released from all and any
liability as part of such settlement.

            (d) If the indemnification provided for in this Section 6 is held by
a court of competent jurisdiction to be unavailable to an indemnified party with
respect to any loss, claim, damage, liability or action referred to herein, then
the indemnifying party, in lieu of indemnifying such indemnified party
hereunder, shall contribute to the amounts paid or payable by such indemnified
party as a result of such loss, claim, damage, liability or action in such
proportion as is appropriate to reflect the relative fault of the indemnifying
party on the one hand and of the indemnified party on the other hand in
connection with the statements or omissions which resulted in such loss, claim,
damage, liability or action as well as any other relevant equitable
considerations; provided, however, that the maximum amount of liability in
respect of such contribution shall be limited, in the case of each holder of PM
Registrable Shares, to an amount equal to the net proceeds actually received by
such holder from the sale of PM Registrable Shares effected pursuant to such
registration. The relative fault of the indemnifying party and of the
indemnified party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or omission to
state a material fact or alleged omission to state a material fact relates to
information supplied by the indemnifying party or by the indemnified party or
their respective agents and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.
The parties agree that it would not be just and equitable if contribution
pursuant hereto were determined by pro rata allocation or by any other method or
allocation which does not take account of the equitable considerations referred
to herein. No person guilty of fraudulent misrepresentation shall be entitled to
contribution from any Person.

            (e) The indemnification and contribution provided for under this
Agreement will remain in full force and effect regardless of any investigation
made by or on behalf of the indemnified party and will survive the transfer of
securities.

      7. Underwriting Agreement.

                                       15
<PAGE>

            Notwithstanding the provisions of Sections 4 through 6, to the
extent that the PM Securityholders shall enter into an underwriting or similar
agreement, which agreement contains provisions covering one or more matters
addressed in such Sections, the provisions contained in such Sections addressing
such matters shall be of no force or effect with respect to such registration,
but this provision shall not apply to the Corporation if the Corporation is not
a party to the underwriting or similar agreement as evidenced by a written
instrument.

      8. Suspension.

            Anything contained in this Agreement to the contrary
notwithstanding, the Corporation may (but not more than twice with respect to
each Registration Statement), by notice in writing to each holder of PM
Registrable Shares to which a Prospectus relates, require such holder to
suspend, for up to 90 days (the "Suspension Period"), the use of any Prospectus
included in the Registration Statement filed under Section 2 if a Material
Transaction exists that would require an amendment to such Registration
Statement or supplement to such Prospectus (including any such amendment or
supplement made through incorporation by reference to a report filed under
Section 13 of the Exchange Act). The period during which such Prospectus must
remain effective shall be extended by a period equal to the aggregate number of
days which equal the Suspension Period. The Corporation may (but shall not be
obligated to) withdraw the effectiveness of any Registration Statement subject
to this provision.

      9. Information by Holder.

            (a) Each holder of PM Registrable Shares to be included in any such
registration shall promptly furnish to the Corporation and the managing
underwriter such written information regarding such holder and the distribution
proposed by such holder as the Corporation or the managing underwriter may
reasonably request and as shall be reasonably required in connection with any
registration, qualification or compliance referred to in this Agreement.

            (b) Each holder of PM Registrable Shares, by such holder's
acceptance of inclusion of all or a portion of its PM Registrable Shares in a
Registration Statement, agrees to cooperate with the Corporation as reasonably
requested by the Corporation in connection with the preparation and filing of
the Registration Statement.

            (c) No holder of PM Registrable Shares to be included in an
underwritten Registration Statement may participate in such offering unless it:
(i) agrees to sell its PM Registrable Shares on the basis provided in any
underwriting arrangement in usual and customary form entered into by the
Corporation; (ii) completes and executes all questionnaires, lock-up agreements
and other documents required under the terms of such underwriting agreements and
(iii) agrees to pay its pro rata share of all underwriting discounts and
commissions and any expenses in excess of those payable by the Corporation in
Section 5.

      10. Exchange Act Compliance.

            From the Registration Date or such earlier date as a registration
statement filed by the Corporation pursuant to the Exchange Act relating to any
class of the Corporation's securities shall have become effective, the
Corporation shall comply with all of the reporting requirements

                                       16
<PAGE>

of the Exchange Act applicable to it (whether or not it shall be required to do
so, but specifically excluding Section 14 of the Exchange Act if not then
applicable to the Corporation) and shall comply with all other public
information reporting requirements of the SEC applicable to it and which are
conditions to the availability of Rule 144 of the Securities Act for the sale of
Common Stock. The Corporation shall cooperate with the PM Securityholders in
supplying such information as may be necessary for the PM Securityholders to
complete and file any information reporting forms presently or hereafter
required by the SEC as a condition to the availability of Rule 144 of the
Securities Act.

      11. Legends on Certificates.

            (a) Each certificate issued after the date hereof that represents
Restricted Securities shall (unless otherwise permitted by the provisions of
this Section 11) be stamped or otherwise imprinted with a legend in
substantially the following form (in addition to any other legend required by
law or applicable agreement):

                  "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
                  REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE "ACT"). THESE
                  SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A
                  VIEW TO DISTRIBUTION OR RESALE, AND MAY NOT BE SOLD, OFFERED
                  FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN
                  EFFECTIVE REGISTRATION STATEMENT FOR SUCH SECURITIES UNDER THE
                  ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
                  ISSUER THAT SUCH REGISTRATION IS NOT REQUIRED."

                  "THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE ALSO
                  SUBJECT TO THE TERMS AND CONDITIONS OF A REGISTRATION RIGHTS
                  AGREEMENT DATED AS OF FEBRUARY __, 2000, BETWEEN OPUS360
                  CORPORATION AND THE PM SECURITYHOLDERS (AS DEFINED THEREIN),
                  AS THE SAME MAY BE AMENDED, SUPPLEMENTED OR OTHERWISE MODIFIED
                  AND IN EFFECT FROM TIME TO TIME. COPIES OF SUCH AGREEMENT MAY
                  BE OBTAINED AT NO COST BY WRITTEN REQUEST MADE BY THE HOLDER
                  OF RECORD OF THIS CERTIFICATE TO THE SECRETARY OF SUCH COMPANY
                  AT ITS PRINCIPAL EXECUTIVE OFFICE."

            The Corporation agrees to remove, or cause its transfer agent to
remove, the legend set forth in this Section 11(a) from a certificate
representing securities issued by the Corporation if such securities are sold
pursuant to an effective registration statement under the Securities Act or
there is delivered to the Corporation an opinion of counsel selected by the
holder of such certificate, which counsel and opinion shall each be reasonably
satisfactory to the Corporation, that the securities represented thereby need no
longer be subject to restrictions on resale under the Securities Act.

                                       17
<PAGE>

            (b) Each PM Securityholder consents to the Corporation making a
notation on its records and giving instructions to any transfer agent of such PM
Securityholder's Restricted Securities in order to implement the restrictions on
transfer as set forth in this Section 11.

      12. Mergers, Etc.

            The Corporation shall not, directly or indirectly, enter into any
merger, consolidation or reorganization in which the Corporation shall not be
the surviving corporation unless the surviving corporation shall, prior to such
merger, consolidation or reorganization, agree in writing to assume the
obligations of the Corporation under this Agreement, and for that purpose
references hereunder to "Registrable Shares" shall be deemed to include the
shares of common stock, if any, that holders of Registrable Shares would be
entitled to receive in exchange for Common Stock under any such merger,
consolidation or reorganization; provided, however, that, to the extent holders
of Registrable Shares receive securities that are by their terms convertible
into shares of common stock of the issuer thereof, then only such shares of
common stock as are issued or issuable upon conversion of said convertible
securities shall be included within the definition of "Registrable Shares";
provided, however, nothing contained in this Section 12 shall enlarge or
otherwise modify the voting power in respect of the PM Registrable Shares as it
relates to the approval or consent of any such fundamental transaction.

      13. Nominees for Beneficial Owners.

            If Registrable Shares are held by a nominee for the beneficial owner
thereof, the beneficial owner thereof may, at its option, be treated as the
holder of such Registrable Shares for purposes of any request or other action by
any holder or holders of Registrable Shares pursuant to this Agreement (or any
determination of any number of percentage of shares constituting Registrable
Shares held by any holder or holders of Registrable Shares contemplated by this
Agreement); provided, however, that the Corporation shall have received
assurances reasonably satisfactory to it of such beneficial ownership.

      14. Termination.

            This Agreement shall terminate and be of no further force or effect
when there shall no longer be any PM Registrable Shares or Additional
Registrable Shares outstanding, provided, however, that Section 5 and Section 6
shall survive the termination of this Agreement.

      15. Successors and Assigns.

            This Agreement shall bind and inure to the benefit of the
Corporation and the PM Securityholders and, subject to Section 16, the
respective successors and assigns of the Corporation and the PM Securityholders.

      16. Assignment.

            Subject to the applicable limitations and conditions contained in
the Stockholders' Agreement and each of the Investment Letter, the Escrow
Agreement, the Merger Agreement, the Restricted Stock Vesting Agreement, any
applicable employment agreements between

                                       18
<PAGE>

employees of PeopleMover and the Surviving Corporation (as such term is defined
in Section 1.1 of the Merger Agreement) (each of the foregoing agreements as
entered into in connection with and contemplated by the Merger Agreement), each
PM Securityholder may sell, assign or otherwise transfer its rights hereunder to
any purchaser, assignee or other transferee of the PM Registrable Shares of such
PM Securityholder; provided, however, that any such purchaser, assignee or other
transferee, if not already a party to this Agreement, shall, as a condition to
the effectiveness of such sale, assignment or other transfer, be required to
execute a written joinder to this Agreement agreeing to be treated as a PM
Securityholder under this Agreement, and to be bound by and comply with all of
the applicable terms and provisions hereof (and, if necessary, any other
agreement or instrument requested by the Corporation), whereupon such purchaser,
assignee or transferee shall have the benefits of, and shall be subject to the
restrictions contained in, this Agreement as if such purchaser or transferee was
originally a PM Securityholder and had originally been a party hereto. Any
assignment in violation of the above provision shall be null and void.

      17. Notices.

            All notices, requests, demands, claims, consents or other
communications that are given or made hereunder to any party hereto shall be in
writing and shall be given or made by physical delivery, U.S. mail (registered
or certified mail, postage prepaid, return receipt requested) or overnight
courier or by transmission by facsimile or electronic mail to such party at its,
his or her address (or facsimile number or electronic mail address) set forth
below, or such other address (or facsimile number or electronic mail address) as
shall have been previously specified by like notice by such party:

                                       19
<PAGE>

                  (i)   if to the Corporation, to

                        Opus360 Corporation
                        733 Third Avenue, 17th Floor
                        New York, NY  10017
                        Attention: Richard McCann, Chief Financial Officer
                        Telephone: (212) 301-2218
                        Facsimile: (212) 301-2842
                        E-Mail: rmccann@opus360.com

                        with a copy (which shall not constitute notice) to:

                        O'Sullivan Graev & Karabell, LLP
                        30 Rockefeller Plaza
                        New York, NY 10112
                        Attention: John J. Suydam, Esq.
                        Telephone: (212) 408-2400
                        Facsimile: (212) 728-5950
                        E-Mail: jjs@ogk.com

                  (ii)  if to any PM Securityholder, to such PM Securityholder
                        at the address set forth on Schedule I opposite the name
                        of such PM Securityholder.

            Each such notice, demand or other communication hereunder shall be
effective upon receipt in the case of physical delivery or overnight courier,
upon confirmation of receipt by or on behalf of the addressee in the case of
transmission by facsimile or electronic mail if received prior to 5:00 p.m. New
York City time, and, if received after 5:00 p.m., on the date after such
confirmation, and three (3) days after deposit in the U.S. mails in the case of
mailing.

      18. Entire Agreement; No Third Party Beneficiaries.

            This Agreement and the other writings referred to herein or
delivered pursuant hereto contain the sole and entire agreement among the
Corporation and the PM Securityholders with respect to the subject matter hereof
and thereof and shall supersede all prior or contemporaneous arrangements or
understandings (whether written or oral) with respect hereto or thereto and,
except for the provisions of Section 6, are not intended to confer upon any
Persons other than the parties to this Agreement any rights or remedies
hereunder.

      19. Amendment.

            The terms and provisions of this Agreement may not be modified or
amended, nor may any provision be waived, except pursuant to a writing signed by
(i) the Corporation, and (ii) a Majority of the PM Securityholders; provided,
however, that no such written consent shall be required for the amendment of
Schedule I solely to reflect the name and address of any new PM Securityholder
who has become a party to this Agreement in accordance with the terms and
conditions hereof. No waiver by any party hereto of any default,
misrepresentation, or breach of warranty or covenant hereunder, whether
intentional or not, shall be deemed to extend to any

                                       20
<PAGE>

prior or subsequent default, misrepresentation, or breach of warranty or
covenant hereunder or affect in any way any rights arising by virtue of any
prior or subsequent such occurrence. Each holder of any Restricted Securities
outstanding at or after the time of any modification or amendment of, or waiver
of any provisions of this Agreement, shall be bound by any consent authorized by
this Section 19, whether or not such Restricted Securities shall have been
marked to indicate such consent.

      20. Severability.

            It is the desire and intent of the parties hereto that the
provisions of this Agreement be enforced to the fullest extent permissible under
the Laws and public policies applied in each jurisdiction in which enforcement
is sought. Accordingly, if any particular provision of this Agreement shall be
adjudicated by a court of competent jurisdiction to be invalid, prohibited or
unenforceable for any reason, such provision, as to such jurisdiction, shall be
ineffective, without invalidating the remaining provisions of this Agreement or
affecting the validity or enforceability of this Agreement or affecting the
validity or enforceability of such provision in any other jurisdiction.
Notwithstanding the foregoing, if such provision could be more narrowly drawn so
as not to be invalid, prohibited or unenforceable in such jurisdiction, it
shall, as to such jurisdiction, be so narrowly drawn, without invalidating the
remaining provisions of this Agreement or affecting the validity or
enforceability of such provision in any other jurisdiction.

      21. Counterparts; Facsimile Signatures.

            This Agreement may be executed in any number of counterparts, and
each such counterpart shall be deemed to be an original instrument, but all such
counterparts together shall constitute but one agreement. This Agreement and
each other agreement or instrument entered into in connection herewith or
contemplated hereby, and any amendments hereto or thereto, to the extent signed
and delivered by means of a facsimile machine, shall be treated in all manner
and respects as an original agreement or instrument and shall be considered to
have the same binding legal effect as if it were the original signed version
thereof delivered in person. At the request of any party hereto or to any such
agreement or instrument, each other party hereto or thereto shall reexecute
original forms thereof and deliver them to all other parties.

      22. Governing Law.

            THIS AGREEMENT SHALL BE GOVERNED BY THE LAWS OF THE STATE OF NEW
YORK WITHOUT REGARD TO THE CONFLICTS OF LAW PRINCIPLES THEREOF.

      23. Enforcement.

            The parties hereto agree that irreparable damage would occur and
that the parties would not have any adequate remedy at law in the event that any
of the provisions of this Agreement were not performed in accordance with their
specific terms or were otherwise breached. It is accordingly agreed that the
parties shall be entitled to an injunction or injunctions to prevent breaches of
this Agreement and to enforce specifically the terms and provisions of this

                                       21
<PAGE>

Agreement in any federal court located in the Borough of Manhattan, City of New
York or any New York state court located in the Borough of Manhattan, City of
New York, this being in addition to any other remedy to which they are entitled
at law or in equity. In addition, each of the parties hereto (a) consents to
submit itself to the personal jurisdiction of any federal court located in the
Borough of Manhattan, City of New York or any New York state court located in
the Borough of Manhattan, City of New York in the event any dispute arises out
of this Agreement or any of the transactions contemplated by this Agreement, (b)
agrees that it will not attempt to deny or defeat such personal jurisdiction by
motion or other request for leave from any such court and waives, to the fullest
extent permitted by law, any objection which it may now or hereafter have to the
laying of venue of any such suit, action or proceeding which is brought in any
such court or that any such suit, action or proceeding which is brought in any
such court has been brought in an inconvenient forum and (c) agrees that it will
not bring any action relating to this Agreement or any of the transactions
contemplated by this Agreement in any court other than a federal court located
in the Borough of Manhattan, City of New York or any New York state court
located in the Borough of Manhattan, City of New York. Process in any such suit,
action or proceeding may be served on any party anywhere in the world, whether
within or without the jurisdiction of any such court. Without limiting the
foregoing, each party agrees that service of process on such party as provided
in Section 17 shall be deemed effective service of process on such party.

      24. Interpretation; Construction.

            The headings contained in this Agreement and in the table of
contents to this Agreement are for convenience of reference only and shall not
govern or affect in any way the meaning or interpretation of any of the terms or
provisions of this Agreement. Except when the context requires otherwise, any
reference in this Agreement to any Section, clause or Schedule shall be to the
Sections and clauses of, and Schedules to, this Agreement. The words "include,"
"includes" and "including" are deemed to be followed by the phrase "without
limitation." Any reference to the masculine, feminine or neuter gender shall
include such other genders and any reference to the singular or plural shall
include the other, in each case unless the context otherwise requires. Schedule
I annexed hereto is hereby incorporated in and made a part of this Agreement as
if set forth in full herein. Where specific language is used to clarify by
example a general statement contained herein, such specific language shall not
be deemed to modify, limit or restrict in any manner the construction of the
general statement to which it relates. The language used in this Agreement has
been chosen by the parties to express their mutual intent, and no rule of strict
construction shall be applied against any party.

      25. Waiver of Jury Trial.

            EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES ITS, HIS OR HER
RIGHT TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING OUT
OF THIS AGREEMENT OR ANY DEALINGS BETWEEN THE PARTIES HERETO RELATING TO THE
SUJBECT MATTER HEREOF.

      26. Attorney's Fees.

                                       22
<PAGE>

            If any legal action or any arbitration or other proceeding is
brought for the enforcement of this Agreement, or because of an alleged dispute,
breach, default or misrepresentation in connection with any of the provisions of
this Agreement, the successful or prevailing party or parties shall be entitled
to recover such reasonable attorneys fees and other costs incurred in that
action or proceeding, in addition to any other relief to which it or they may be
entitled, as may be ordered in connection with such proceeding.

                                    * * * * *

                                       23
<PAGE>

            IN WITNESS WHEREOF, the parties hereto have duly executed this
Registration Rights Agreement as of the date first written above.

                                    OPUS360 CORPORATION

                                    By:
                                       -----------------------------
                                       Name:
                                       Title:
<PAGE>

            IN WITNESS WHEREOF, the parties hereto have duly executed this
Registration Rights Agreement as of the date first written above.

                                    [PM SECURITYHOLDER]

                                    By:
                                       -----------------------------
                                       Name:
                                       Title:
<PAGE>

                                                                      SCHEDULE I

                               PM Securityholders

                                                       Number of Shares
Name                    Address                        of Common Stock
----                    -------                        ---------------

                                       26<PAGE>

                                                                    EXHIBIT 10.1

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

                            KEY EMPLOYEE AGREEMENT

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

                                                         As of November 11, 1999

To:  William S. Hurley
     23 Overlook Drive
     Westboro, MA  01581

     The undersigned, Applied Science and Technology, Inc., a Delaware
corporation, as well as its successors and assigns (hereinafter collectively
referred to as the "Company"), hereby agree with you as follows:

     1.   Position and Responsibilities.
          -----------------------------

          1.1  You shall serve as Chief Financial Officer/Senior Vice President
(or in such other capacity as shall be designated by the President or Board of
Directors and reasonably acceptable to you). You will, to the best of your
ability, devote your full time and best efforts to the performance of your
duties hereunder and the business and affairs of the Company and perform such
duties as may be assigned to you by or on authority of the Company's President
from time to time and the duties customarily associated with such capacity from
time to time and at such place or places as the Company shall designate are
appropriate and necessary in connection with such employment.

          1.2  You will duly, punctually and faithfully perform and observe any
and all rules and regulations which the Company may now or shall hereafter
establish governing the conduct of its business.

          1.3  You will report directly to the Company's President and will be
based out of the Company's Woburn office.

     2.   Term of Employment.
          ------------------

          2.1  The initial term of this Agreement shall be for the period set
forth on Exhibit A annexed hereto commencing with the date hereof. Thereafter,
         ---------
this Agreement shall be automatically renewed for successive periods of one
year, unless you or the Company shall give the other party not less than thirty
(30) days written notice of non-renewal. Your employment with the Company may be
terminated as provided in Section 2.2.

                                      A-1
<PAGE>

          2.2  The Company shall have the right, upon written notice to you, to
     terminate your employment:

               (a)  immediately at any time for "Cause" (as defined herein
     subject to your right of cure and right to dispute as provided in Section
     2.3 herein); or

               (b)  at any time, without "Cause," provided that the Company
     shall be obligated to pay to you the Severance Benefits set forth in
     Section 6, Exhibit A, plus any sums then due to you, including those
                ---------
     expenses as are provided for in Section 4 of Exhibit A, less (i) applicable
                                                  ---------
     taxes and other required withholdings, and (ii) any amounts you may owe to
     the Company. Payments under this Section 2.2 (b) shall not be due or
     payable if you are terminated at any time for "Cause" or if you voluntarily
     resign from your employment.

          2.3  For purposes of Section 2.2, the term "Cause" shall mean (a)
gross negligence or willful misconduct in the performance of assigned duties;
(b) material and repetitive refusal to perform or discharge the duties or
responsibilities assigned by the President of the Company provided the same are
not illegal, unethical or inconsistent with the position of Chief Financial
Officer/Senior Vice President of a corporation and the failure to correct such
refusal and perform such duties or responsibilities within a reasonable period
of time (but in any event no less than seven (7) calendar days after written
notice of such failure); (c) conviction of a felony or misdemeanor involving
moral turpitude; (d) willful or prolonged absence from work not excused by a
bona fide medical disability as reasonably determined by a qualified physician
mutually acceptable to both you and the Company or other good cause as
reasonably determined by the Board of Directors; and (e) falseness of any
warranty or representation by you herein or the breach of your obligations under
this Agreement to the material detriment of the Company.

          2.4  In the event of the Involuntary Termination (as hereinafter
defined) of your employment with the Company at any time, the Company hereby
agrees to provide you with Severance Benefits as defined in Section 6 of Exhibit
                                                                         -------
A hereto. In this regard, the phrase "Involuntary Termination" shall mean (a)
-
any termination of your employment by the Company other than for "cause," as
defined in Section 2.3 or (b) any notice by the Company not to renew this
Agreement pursuant to Section 2.1.

          2.5  You shall have the right to terminate this Agreement upon not
less than thirty (30) days prior written notice to the Company.

     3.   Compensation. You shall receive the compensation and benefits set
          ------------
forth on Exhibit A ("Compensation") for all services to be rendered by you
         ---------
hereunder and for your transfer of property rights pursuant to an agreement
relating to proprietary information and inventions of even date herewith
attached hereto as Exhibit C between you and the Company (the "Proprietary
Information and Inventions Agreement").

                                      A-2
<PAGE>

     4.   Other Activities During Employment.
          ----------------------------------

          4.1  Except for any outside employments and directorships currently
held by you as listed on Exhibit B, and/or except with the prior written consent
                         ---------
of the President, you will not during the term of this Agreement undertake or
engage in any other employment, occupation or business enterprise other than one
in which you are an inactive investor.

          4.2  You hereby agree that, except as disclosed on Exhibit B hereto,
                                                             ---------
during your employment hereunder, you will not, directly or indirectly, engage
(a) individually, (b) as an officer, (c) as a director, (d) as an employee, (e)
as a consultant, (f) as an advisor, (g) as an agent (whether a salesperson or
otherwise), (h) as a broker, or (i) as a partner, coventurer, stockholder or
other proprietor owning directly or indirectly more than two percent (2%)
interest, in any firm, corporation, partnership, trust, association, or other
organization which is engaged in the research, development, production,
manufacture or marketing of equipment or processes in direct competition with
the Company or any other line of business engaged in or under demonstrable
development by the Company (such firm, corporation, partnership, trust,
association, or other organization being hereinafter referred to as a
"Prohibited Enterprise"). Except as may be shown on Exhibit B, you hereby
                                                    ---------
represent that you are not engaged in any of the foregoing capacities (a)
through (i) in any Prohibited Enterprise.

     5.   Former Employers.
          ----------------

          5.1  You represent and warrant that your employment by the Company
will not conflict with and will not be constrained by any prior or current
employment, consulting agreement or relationship whether oral or written. You
represent and warrant that you do not possess confidential information arising
out of any such employment, consulting agreement or relationship which, in your
best judgment, would be utilized in connection with your employment by the
Company in the absence of Section 5.2.

          5.2  If, in spite of the second sentence of Section 5.1, you should
find that confidential information belonging to any other person or entity might
be usable in connection with the Company's business, you will not intentionally
disclose to the Company or use on behalf of the Company any confidential
information belonging to any of your former employers; but during your
employment by the Company you will use in the performance of your duties all
information which is generally known and used by persons with training and
experience comparable to your own all information which is common knowledge in
the industry or otherwise legally in the public domain.

     6.   Proprietary Information and Inventions. You agree to execute, deliver
          --------------------------------------
and be bound by the provisions of the Proprietary Information and Inventions
Agreement.

     7.   Remedies. Your obligations under the Proprietary Information and
          --------
Inventions

                                      A-3
<PAGE>

Agreement and the provisions of Sections 4, 6, and 8 of this Agreement (as
modified by Section 9, if applicable) shall survive the expiration or
termination of your employment (whether through your resignation or otherwise)
with the Company. You acknowledge that a remedy at law for any breach or
threatened breach by you of the provisions of the Proprietary Information and
Inventions Agreement would be inadequate and you therefore agree that the
Company shall be entitled to such injunctive or other equitable relief in case
of any such breach or threatened breach.

     8.   Assignment. This Agreement and the rights and obligations of the
          ----------
parties hereto shall bind and inure to the benefit of any successor or
successors of the Company by reorganization, merger or consolidation and any
assignee of all or substantially all of its business and properties, but, except
as to any such successor or assignee of the Company, neither this Agreement nor
any rights or benefits hereunder may be assigned by the Company or by you,
except by operation of law. The Company's obligations and those of any
successors or assignees of the Company under this Agreement, including but not
limited to the severance provisions and other compensation and benefits due to
you pursuant to Exhibit A hereto, will be a condition of and are to remain those
                ---------
of any successor or assignee.

     9.   Interpretation. IT IS THE INTENT OF THE PARTIES THAT in case any one
          --------------
or more of the provisions contained in this Agreement shall, for any reason, be
held to be invalid, illegal or unenforceable in any respect, such invalidity,
illegality or unenforceability shall not affect the other provisions of this
Agreement, and this Agreement shall be construed as if such invalid, illegal or
unenforceable provision had never been contained herein.  MOREOVER, IT IS THE
INTENT OF THE PARTIES THAT in case any one or more of the provisions contained
in this Agreement shall for any reason be held to be excessively broad as to
duration, geographical scope, activity or subject, such provision shall be
construed by limiting and reducing it as determined by a court of competent
jurisdiction, so as to be enforceable to the extent compatible with applicable
law.

     10.  Notices. Any notice which the Company is required to or may desire to
          -------
give you shall be given by personal delivery or registered or certified mail,
return receipt requested, addressed to you at your address of record with the
Company, or at such other place as you may from time to time designate in
writing. Any notice which you are required or may desire to give to the Company
hereunder shall be given by personal delivery or by registered or certified
mail, return receipt requested, addressed to the Company at its principal
office, or at such other office as the Company may from time to time designate
in writing. The date of personal delivery or the date of mailing any notice
under this Section 10 shall be deemed to be the date of delivery thereof.

     11.  Waivers. If either party should waive any breach of any provision of
          -------
this Agreement, such party shall not thereby be deemed to have waived any
preceding or succeeding breach of the same or any other provision of this
Agreement.

                                      A-4
<PAGE>

     12.  Complete Agreement; Amendments. The foregoing including Exhibits A,
          ------------------------------
B, C, D and E hereto, is the entire agreement of the parties with respect to the
subject matter hereof, superseding any previous oral or written communications,
representations, understandings, or agreements with the Company or any officer
or representative thereof. Any amendment to this Agreement or waiver by the
Company of any right hereunder shall be effective only if evidenced by a written
instrument executed by the parties hereto, upon authorization of the Company's
Board of Directors.

     13.  Headings. The headings of the Sections hereof are inserted for
          --------
convenience only and shall not be deemed to constitute a part hereof nor to
affect the meaning of this Agreement.

     14.  Counterparts. This Agreement may be signed in two counterparts, each
          ------------
of which shall be deemed an original and both of which shall together constitute
one agreement.

     15.  Governing Law; Venue. This Agreement shall be governed by and
          --------------------
construed under Massachusetts law.

     16.  Advice of Separate Counsel. You acknowledge that you have been advised
          --------------------------
to review this Agreement with your own legal counsel and other advisors of your
choosing and that prior to entering into this Agreement, you have had the
opportunity to review this Agreement with your attorney and other advisors and
have not asked (or relied upon) Mintz, Levin, Cohn., Ferris, Glovsky and Pope,
P.C. to represent you in this matter.

     If you are in agreement with the foregoing, please sign your name below and
also at the bottom of the Proprietary Information and Inventions Agreement and
Stock Option Grant Letter, whereupon this Agreement shall become binding in
accordance with its terms. Please then return this Agreement to the Company.
(You may retain for your records the accompanying counterpart of this Agreement
enclosed herewith).

                                        Very truly yours,

ACCEPTED AND AGREED:                    APPLIED SCIENCE AND
                                        TECHNOLOGY,  INC.

 /s/ William S. Hurley                  By: /s/ Richard S. Post
------------------------------              ---------------------------------
William S. Hurley                           Dr. Richard S. Post, President

                                      A-5
<PAGE>

                                                                       EXHIBIT A
                                                                       ---------

                  EMPLOYMENT TERM, COMPENSATION AND BENEFITS
                             OF WILLIAM S. HURLEY

     1.   Term. The term of the Agreement to which this Exhibit A is attached
          ----
and made a part shall be for a period from the date of this Agreement through
November 11, 2000.

     2.   Compensation.
          ------------

          (a)  Base Salary. Your base salary ("Base Salary") shall be $6,730.76
               -----------
payable on a bi-weekly basis ($175,000.00 on an annualized basis) through
September 30, 2000, payable in accordance with the Company's payroll policies.
Commencing October 1, 2000 your base salary shall be established by the Board of
Director's Compensation Committee.

          (b)  Bonuses. The Company shall establish appropriate incentive
               -------
compensation plans ("Bonuses") for you for each fiscal year that you are
employed hereunder, commencing with Fiscal 2000 which commences on June 27,
1999, under which you shall be entitled to a prorated bonus of up to 30% of your
then current Base Salary based on the Company attaining certain financial and
other results and also based upon individual goals to be established for you. (A
minimum of one half of your full FY'00 bonus will be guaranteed, provided your
employment with the company continues through August 2000.) Such Bonuses shall
be properly approved by the Board of Directors or the Compensation Committee of
the Board of Directors.

     3.   Vacation, Insurance and Benefits; Expenses. You shall be entitled to
          ------------------------------------------
all legal holidays recognized by the Company, and 13 days paid vacation per
annum. Any unused vacation may be accrued or used in accordance with Company
policy. You shall be eligible for participation in any health, dental, and other
group insurance plans which may be established and maintained by the Company for
all full-time employees or which the Company is required to maintain by law. You
shall also be entitled to participate in any employee benefit programs which the
Company's Board of Directors may establish for Company employees generally,
including, but not limited to, bonuses and stock purchase or option plans. You
will be eligible to participate in the Company's 401(k) Plan. The Company shall
reimburse you for all usual and ordinary business expenses incurred by you in
the scope of your employment hereunder in accordance with the Company's expense
reimbursement policy.

     4.   Initial Stock Options. You shall be entitled to receive stock options
          ---------------------
to purchase up to an aggregate of 40,000 shares of common stock of the Company.
Such options shall be priced on the closing price of the Company's Common Stock
as reported by NASDAQ on the date you commence employment with the Company and
shall vest as follows: the stock options have a four year vesting period, with
20% vesting after six months, 20% vesting after one year, 20% at the end of two
years, 20% at the end of three years, and full vesting at the end of four

                                      A-6
<PAGE>

years in four equal annual installments on the anniversary date of such grant. A
copy of the forms of option grant letter is attached hereto as Exhibits D and E.
                                                               ----------------
Notwithstanding the foregoing, in the event of a Change of Control (as defined
in Section 7 herein), an additional 20% of such option shall vest upon the
Change of Control (but in any event not to exceed 100% of the original option
grant).

     5.   Subsequent Stock Options. You shall be entitled to an additional
          ------------------------
25,000 stock options over the next year (at the start of Fiscal Year 2001),
subject to Board of Directors or the Compensation Committee of the Board of
Directors' approval, provided your employment with ASTeX continues to be active
at that time.

     6.   Severance Benefits.
          ------------------

          (a)  When provided for in this Agreement, you shall be entitled to
"Severance Benefits." When used in this Agreement, the term "Severance Benefits"
shall mean a total amount equal to one hundred percent (100%) of your then
current Base Salary if you are involuntarily terminated for any reason other
than for cause, for a period not to exceed six (6) months or up until when you
start another full time position if it is prior to six months from your
termination date. The Severance Benefits shall be paid via check to you in six
(6) equal monthly installments commencing within ten (10) days after the date of
your termination of employment with the Company.

          (b)  In addition, the term "Severance Benefits" shall include the
continuation for you and your family, during the Severance Period, as defined
below, of all of the other benefits which are provided or available to you on
the last day of your actual service with the Company. For purposes of this
Agreement, the term "Severance Period" means the period of six (6) months
beginning on the Date of Termination.

          (c)  The Severance Benefits referred to above will be in addition to,
and not in substitution for, any accrued and unpaid salary, vacation, pension or
other similar retirement benefits, and unreimbursed expenses to which you may be
otherwise entitled.

     7.   Change in Control.
          -----------------

          (a)  For purposes of this Agreement, "Change in Control" means and
shall be deemed to occur if any of the following occurs: (i) the acquisition by
an individual, entity or group, as defined in Section 13(d)(3) or 14(d)(2) of
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), of
beneficial ownership, as defined in Rule 13d-3 promulgated under the Exchange
Act, of 50% or more of either (A) the outstanding shares of common stock, $.01
par value per share, of the Company (the "Common Stock"), or (B) the combined
voting power of the voting securities of the Company entitled to vote generally
in the election of directors (the "Voting Securities"); or (ii) individuals who,
on November 21, 1997, constituted the Board of Directors of the Company (the
"Incumbent Board") cease for any reason to

                                      A-7
<PAGE>

constitute at least a majority of the Board of Directors of the Company;
provided, however, that any individual becoming a director subsequent to
--------  -------
November 21, 1997, whose election, or nomination for election by the Company's
shareholders, was approved by a vote of at least a majority of the directors
then serving and comprising the Incumbent Board shall be considered as though
such individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a
result of either an actual or threatened election contest (as such terms are
used in Rule 14a-11 of Regulation 14A promulgated under the Exchange Act) or
other actual or threatened solicitation of proxies or consents; or (iii)
approval by the Board of Directors or the shareholders of the Company of a (A)
tender offer to acquire any of the Common Stock or voting securities, (B)
reorganization, (C) merger or (D) consolidation, other than a reorganization,
merger or consolidation with respect to which all or substantially all of the
individuals and entities who were the beneficial owners, immediately prior to
such reorganization, merger or consolidation, of the Common Stock and voting
securities beneficially own, directly or indirectly, immediately after such
reorganization, merger or consolidation, more than 80% of the then outstanding
common stock and voting securities (entitled to vote generally in the election
of directors) of the Company resulting from such reorganization, merger or
consolidation in substantially the same proportions as their respective
ownership, immediately prior to such reorganization, merger or consolidation, of
the Common Stock and the voting securities; or (iv) Approval by the Board of
Directors or the shareholders of the Company of (A) a complete or substantial
liquidation or dissolution of the Company, or (B) the sale or other disposition
of all or substantially all of the assets of the Company, excluding a
reorganization of the Corporation under the corporate laws of Delaware.

          (b)  In the event of your actual termination of employment
contemporaneous with or following a Change in Control, except (x) because of
your death, (y) by the Company for Cause or Disability (as hereinafter defined)
or (z) by you other than for Good Reason (as hereinafter defined): (i) you shall
be entitled to receive, in lieu of the sums described in Section 6, an amount
equal to 100% of the Severance Benefits due and determined as if payable under
Section 6 above, for each full year or portion thereof you have been employed by
the Company, up to a maximum of 100% of the Severance Benefits mentioned in
Section 6 above, to be paid in accordance with the terms of this Agreement; and
(ii) the following additional provisions shall apply (which provisions shall
supersede any other provisions of the Agreement, including but not limited to
Section 2 of the Agreement, to the extent such provisions are inconsistent with
the following provisions):

               (1)  Disability. For purposes of this Section 7(b), termination
                    ----------
by the Company of your employment based on "Disability" shall mean termination
because of your absence from your duties with the Company on a full time basis
for one hundred eighty (180) consecutive days as a result of your incapacity due
to physical or mental illness, unless within thirty (30) days after Notice of
Termination (as hereinafter defined) is given to you following such absence, you
shall have returned to the full time performance of your duties.

               (2)  Good Reason. Termination by you of your employment for "Good
                    -----------

                                      A-8
<PAGE>

Reason" shall mean termination based on:

                    (A)  a reduction by the Company (within two years following
the Change of Control) in your Base Salary as in effect immediately prior to the
Change in Control, other than a reduction in salaries generally for officers of
the Company;

               (3)  Notice of Termination. Any purported termination by the
                    ---------------------
Company or by you following a Change in Control shall be communicated by written
notice to the other party hereto which indicates the specific termination
provision in this Agreement relied upon (the "Notice of Termination").

               (4)  Date of Termination. "Date of Termination" following a
                    -------------------
Change in Control shall mean (A) if your employment is to be terminated for
Disability, thirty (30) days after Notice of Termination is given (provided that
you shall not have returned to the performance of your duties on a full-time
basis during such thirty (30) day period), (B) if your employment is to be
terminated by the Company for any reason other than death or Disability or by
you pursuant to Sections 7(b)(2)(F) or 7(b)(6) hereof or for any other Good
Reason, the date specified in the Notice of Termination, or (C) if your
employment is terminated on account of your death, the day after your death.

               (5)  Compensation Upon Termination or During Disability; Other
                    ---------------------------------------------------------
Agreements.
----------

                    (A)  During any period following a Change in Control of the
Company that you fail to perform your duties as a result of incapacity due to
physical or mental illness, you shall continue to receive your Base Salary at
the rate then in effect and any benefits or awards under any Plan shall continue
to accrue during such period, to the extent not inconsistent with such Plans,
until and unless your employment is terminated pursuant to and in accordance
with this Section 7(b). Thereafter, your benefits shall be determined in
accordance with the Plans then in effect.

                    (B)  If your employment is terminated for Cause following a
Change in Control of the Company, the Company shall pay to you your Base Salary
through the Date of Termination at the rate in effect just prior to the time a
Notice of Termination is given plus any benefits or awards (including both the
cash and stock components) which pursuant to the terms of any Plans have been
earned or become payable, but which have not yet been paid to you. Thereupon,
the Company shall have no further obligations to you under this Agreement.

               (6)  Successors, Binding Agreement.
                    -----------------------------

                    (A)  The Company will seek, by written request at least five
(5) business days prior to the time a Person becomes a Successor (as hereinafter
defined), to have such Person, by agreement in form and substance satisfactory
to you, assent to the fulfillment of the Company's obligations under this
Agreement. Failure of such Person to furnish such assent

                                      A-9
<PAGE>

by the later of (i) three (3) business days prior to the time such Person
becomes a Successor or (ii) two (2) business days after such Person receives a
written request to so assent shall constitute Good Reason for termination by you
of your employment if a Change in Control of the Company occurs or has occurred.
For purposes of Section 7, "Successor" shall mean any person that succeeds to,
or has the practical ability to control, the Company's business directly, by
merger or consolidation, or indirectly, by purchase of the Company's securities
eligible to vote for the election of directors, or otherwise.

                    (B)  This Agreement shall inure to the benefit of and be
enforceable by your personal legal representatives, executors, administrators,
successors, heirs, distributees, devisees and legatees. If you should die while
any amount would still be payable to you hereunder if you had continued to live,
all such amounts, unless otherwise provided herein, shall be paid in accordance
with the terms of this Agreement to your devisee, legatee or other designee or,
if no such designee exists, to your estate.

                    (C)  For purposes of Section 7, the "Company" shall include
any subsidiaries of the Company and any corporation or other entity which is the
surviving or continuing entity in respect of any merger, consolidation or form
of business combination in which the Company ceases to exist; provided, however,
for purposes of determining whether a Change in Control has occurred herein, the
term "Company" shall refer to Applied Science and Technology, Inc. or its
Successor(s).

               (7)  Fees and Expenses; Mitigation.
                    -----------------------------

                    (A)  The Company shall reimburse you, on a current basis,
for all reasonable legal fees and related expenses incurred by you in connection
with the Agreement following a Change in Control of the Company, including
without limitation, (i) all such fees and expenses, if any, incurred in
contesting or disputing any termination of your employment or (ii) your seeking
to obtain or enforce any right or benefit provided by this Agreement, in each
case, regardless of whether or not your claim is upheld by a court of competent
jurisdiction; provided, however, you shall be required to repay any such amounts
to the Company to the extent that a court issues a final and non-appealable
order setting forth the determination that the position taken by you was
frivolous or advanced by you in bad faith.

                    (B)  You shall not be required to mitigate the amount of any
payment the Company becomes obligated to make to you in connection with this
Agreement, by seeking other employment or otherwise.

               (8)  Taxes. All payments to be made to you under this Agreement
                    -----
will be subject to required withholding of federal, state and local income and
employment taxes.

          (c)  Notwithstanding any other provision of this Agreement, in the
event that any payment or benefit received or to be received by you as a result
of or in connection with a

                                      A-10
<PAGE>

Change in Control, whether pursuant to the terms of this Agreement or any other
plan, arrangement or agreement with the Company (all such payment and benefits
being hereinafter called the "Total Payments") would subject you to the excise
tax (the "Excise Tax") imposed under Section 4999 of the Internal Revenue Code
of 1986, as amended (the "Code"), then, to the extent necessary to eliminate any
such imposition of the Excise Tax (after taking into account any reduction in
the Total Payments in accordance with the provisions of any other plan,
arrangement or agreement, if any), (a) any non-cash severance payments otherwise
payable to you shall first be reduced (if necessary, to zero), and (b) any cash
severance payment otherwise payable to you shall next be reduced. For purposes
of the immediately preceding sentence, (i) no portion of the Total Payments the
receipt or enjoyment of which you shall have effectively waived in writing shall
be taken into account, (ii) no portion of the Total Payment shall be taken into
account which in the opinion of nationally-recognized certified public
accountants (in each case as mutually selected by you and the Company) does not
constitute a "parachute payment" within the meaning of Section 280G of the Code,
including, without limitation, by reason of Section 280G(b)(2) or (b)(4)(A) of
the Code, (iii) any payments to you shall be reduced only to the extent
necessary so that the Total Payments [other than those referred to in clauses
(i) and (ii)] in their entirety constitute reasonable compensation for services
actually rendered within the meaning of Section 280G(4)(B) of the Code or are
otherwise not subject to disallowance as deductions, in the opinion of the tax
counsel or the accountants referred to in clause (ii); and (iv) the value of any
non-cash benefit or any deferred payment or benefit included in the Total
Payments shall be determined by such accountants in accordance with the
requirements of section 280G(d)(3) and (4) of the Code (and such determination
shall be reviewed by such tax counsel).

                     [THIS SPACE INTENTIONALLY LEFT BLANK]

                                      A-11
<PAGE>

                                                                       EXHIBIT B
                                                                       ---------

                   OUTSIDE EMPLOYMENTS AND DIRECTORSHIPS OF

                               WILLIAM S. HURLEY

          Director - The L.S. Starrett Company, Athol, MA 01331-1915

                                      B-1
<PAGE>

                                                                       EXHIBIT C
                                                                       ---------

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

                PROPRIETARY INFORMATION AND INVENTIONS AGREEMENT

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

To:  Applied Science and Technology, Inc.
     35 Cabot Road
     Woburn, Massachusetts  01801

                                         As of November 11, 1999

     The undersigned, in consideration of and as a condition of my employment or
continued employment by you and/or by companies which you own, control, or are
affiliated with or their successors in business (collectively, the "Company"),
hereby agrees as follows:

     1.   Confidentiality. I agree to keep confidential, except as the Company
          ---------------
may otherwise consent in writing, and, except for the Company's benefit, not to
disclose or make any use of at any time either during or subsequent to my
employment, any Inventions (as hereinafter defined), trade secrets, confidential
information, knowledge, data or other information of the Company relating to
products, processes, know-how, designs, formulas, test data, customer lists,
business plans, marketing plans and strategies, pricing strategies, or other
subject matter pertaining to any business of the Company or any of its
affiliates, which I may produce, obtain, or otherwise acquire during the course
of my employment, except as herein provided. I further agree not to deliver,
reproduce or in any way allow any such trade secrets, confidential information,
knowledge, data or other information, or any documentation relating thereto, to
be delivered to or used by any third parties without specific direction or
consent of a duly authorized representative of the Company.

     2.   Conflicting Employment; Return of Confidential Material. I agree that
          -------------------------------------------------------
during my employment with the Company I will not engage in any other employment,
occupation, consulting or other activity relating to the business in which the
Company is now or may hereafter become engaged, or which would otherwise
conflict with my obligations to the Company. In the event my employment with the
Company terminates for any reason whatsoever, I agree to promptly surrender and
deliver to the Company all records, materials, equipment, drawings, documents
and data of which I may obtain or produce during the course of my employment,
and I will not take with me any description containing or pertaining to any
confidential information, knowledge or data of the Company which I may produce
or obtain during the course of my employment.

     3.   Assignment of Inventions.
          ------------------------

          3.1  I hereby acknowledge and agree that the Company is the owner of
all

                                      C-1
<PAGE>

Inventions. In order to protect the Company's rights to such Inventions, by
executing this Agreement I hereby irrevocably assign to the Company all my
right, title and interest in and to all Inventions to the Company.

          3.2  For purposes of this Agreement, "Inventions" shall mean all
discoveries, processes, designs, technologies, devices, or improvements in any
of the foregoing or other ideas, whether or not patentable and whether or not
reduced to practice, made or conceived by me (whether solely or jointly with
others) during the period of my employment with the Company which relate in any
manner to the actual or demonstrably anticipated business, work, or research and
development of the Company, or result from or are suggested by any task assigned
to me or any work performed by me for or on behalf of the Company.

          3.3  Any discovery, process, design, technology, device, or
improvement in any of the foregoing or other ideas, whether or not patentable
and whether or not reduced to practice, made or conceived by me (whether solely
or jointly with others) which I develop entirely on my own time not using any of
the Company's equipment, supplies, facilities, or trade secret information
("Personal Invention") is excluded from this Agreement provided such Personal
Invention (a) does not relate to the actual or demonstrably anticipated
business, research and development of the Company, and (b) does not result,
directly or indirectly, from any work performed by me for the Company.

     4.   Disclosure of Inventions. I agree that in connection with any
          ------------------------
Invention, I will promptly disclose such Invention to my immediate superior at
the Company in order to permit the Company to enforce its property rights to
such Invention in accordance with this Agreement. My disclosure shall be
received in confidence by the Company.

     5.   Patents and Copyrights; Execution of Documents.
          ----------------------------------------------

          5.1  Upon request, I agree to assist the Company or its nominee (at
its expense) during and at any time subsequent to my employment in every
reasonable way to obtain for its own benefit patents and copyrights for
Inventions in any and all countries. Such patents and copyrights shall be and
remain the sole and exclusive property of the Company or its nominee. I agree to
perform such lawful acts as the Company deems to be necessary to allow it to
exercise all right, title and interest in and to such patents and copyrights.

          5.2  In connection with this Agreement, I agree to execute,
acknowledge and deliver to the Company or its nominee upon request and at its
expense all documents, including assignments of title, patent or copyright
applications, assignments of such applications, assignments of patents or
copyrights upon issuance, as the Company may determine necessary or desirable to
protect the Company's or its nominee's interest in Inventions, and/or to use in
obtaining patents or copyrights in any and all countries and to vest title
thereto in the Company or its nominee to any of the foregoing.

                                      C-2
<PAGE>

     6.   Maintenance of Records. I agree to keep and maintain adequate and
          ----------------------
current written records of all Inventions made by me (in the form of notes,
sketches, drawings and other records as may be specified by the Company), which
records shall be available to and remain the sole property of the Company at all
times.

     7.   Prior Inventions. It is understood that all Personal Inventions, if
          ----------------
any, whether patented or unpatented, which I made prior to my employment by the
Company, are excluded from this Agreement. To preclude any possible uncertainty,
I have set forth on Schedule A attached hereto a complete list of all of my
prior Personal Inventions, including numbers of all patents and patent
applications and a brief description of all unpatented Personal Inventions which
are not the property of a previous employer. I represent and covenant that the
list is complete and that, if no items are on the list, I have no such prior
Personal Inventions. I agree to notify the Company in writing before I make any
disclosure or perform any work on behalf of the Company which appears to
threaten or conflict with proprietary rights I claim in any Personal Invention.
In the event of my failure to give such notice, I agree that I will make no
claim against the Company with respect to any such Personal Invention.

     8.   Other Obligations. I acknowledge that the Company from time to time
          -----------------
may have agreements with other persons or with the U.S. Government or agencies
thereof, which impose obligations or restrictions on the Company regarding
Inventions made during the course of work thereunder or regarding the
confidential nature of such work. I agree to be bound by all such obligations
and restrictions and to take all action necessary to discharge the Company's
obligations.

     9.   Trade Secrets of Others. I represent that my performance of all the
          -----------------------
terms of this Agreement and as an employee of the Company does not and will not
breach any agreement to keep confidential proprietary information, knowledge or
data acquired by me in confidence or in trust prior to my employment with the
Company, and I will not disclose to the Company, or induce the Company to use,
any confidential or proprietary information or material belonging to any
previous employer or others. I agree not to enter into any agreement either
written or oral in conflict herewith.

     10.  Modification. I agree that any subsequent change or changes in my
          ------------
employment duties, salary or compensation or, if applicable, in any Employment
Agreement between the Company and me, shall not affect the validity or scope of
this Agreement.

     11.  Successors and Assigns. This Agreement shall be binding upon my heirs,
          ----------------------
executors, administrators or other legal representatives and is for the benefit
of the Company, its successors and assigns.

     12.  Interpretation. IT IS THE INTENT OF THE PARTIES THAT in case any one
          --------------
or more of the provisions contained in this Agreement shall, for any reason, be
held to be invalid, illegal or unenforceable in any respect, such invalidity,
illegality or unenforceability shall not affect the other provisions of this
Agreement, and this Agreement shall be construed as if such

                                      C-3
<PAGE>

invalid, illegal or unenforceable provision had never been contained herein.
MOREOVER, IT IS THE INTENT OF THE PARTIES THAT in case any one or more of the
provisions contained in this Agreement shall for any reason be held to be
excessively broad as to duration, geographical scope, activity or subject, such
provision shall be construed by limiting and reducing it in accordance with a
judgment of a court of competent jurisdiction, so as to be enforceable to the
extent compatible with applicable law.

     13.  Waivers. If either party should waive any breach of any provision of
          -------
this Agreement, he or it shall not thereby be deemed to have waived any
preceding or succeeding breach of the same or any other provision of this
Agreement.

     14.  Complete Agreement, Amendments. I acknowledge receipt of this
          ------------------------------
Agreement, and agree that with respect to the subject matter thereof the
provisions of this Key Employee Agreement of which this Exhibit C is one part,
is my entire agreement with the Company, superseding any previous oral or
written communications, representations, understandings, or agreements with the
Company or any officer or representative thereof. Any amendment to this
Agreement or waiver by either party of any right hereunder shall be effective
only if evidenced by a written instrument executed by the parties hereto, and,
in the case of the Company, upon written authorization of the Company's Board of
Directors.

     15.  Headings. The headings of the sections hereof are inserted for
          --------
convenience only and shall not be deemed to constitute a part hereof nor to
affect the meaning thereof.

     16.  Counterparts. This Agreement may be signed in two counterparts, each
          ------------
of which shall be deemed an original and both of which shall together constitute
one agreement.

     17.  Governing Law. This Agreement shall be governed by and construed
          -------------
under Massachusetts law.

                                      C-4
<PAGE>

     18.  Employment Status. Nothing in this Agreement shall affect in any
          -----------------
manner whatsoever the right or power of the Company to terminate the employment
of the Employee.

                                             EMPLOYEE

                                             /s/ William S. Hurley
                                             ------------------------------
                                             William S. Hurley

Accepted and Agreed:
APPLIED SCIENCE AND TECHNOLOGY,  INC.

By: /s/ Richard S. Post
    -----------------------------------
    Dr. Richard S. Post, President

                                      C-5
<PAGE>

                                                                      SCHEDULE A
                                                                      ----------

                           LIST OF PRIOR INVENTIONS
                                      OF
                               WILLIAM S. HURLEY

                                                         Identifying Number or
Title          Date                                        Brief Description
-----          ----                                    -------------------------

                                      None

                                      C-6
<PAGE>

                                    EXHIBIT D-1 (Incentive Stock Option)
                                    ------------------------------------

                     APPLIED SCIENCE AND TECHNOLOGY, INC.
                                 35 Cabot Road
                         Woburn, Massachusetts  01801

                                    Effective: November 11, 1999

William S. Hurley
23 Overlook Drive
Westboro, MA  01581

Dear Bill:

     I am pleased to advise you that APPLIED SCIENCE AND TECHNOLOGY, INC. (the
"Company") has, pursuant to its 1993 Stock Option Plan (the "1993 Plan"),
awarded you an incentive stock option to purchase [Note: The total grant of
40,000 shares will be divided between incentive stock options and non-qualified
options. The incentive stock options will equal (a) the number of option shares
not to exceed $100,000 in value based on exercise price vesting in any single
calendar year, multiplied by (b) five (the five calendar years over which the
option vests). The remaining options will be issued under a non-qualified stock
option - see attached] shares of the Common Stock, $.01 par value per share, of
the Company at an exercise price of $ per share, for a total exercise price of
$. The Company is making this offer to "share the business" with valued
-
employees such as yourself. We hope that by owning a piece of the Company you
will continue your efforts towards helping the Company grow and succeed.

     The following terms and conditions are applicable with respect to this
option, and your signature below shall constitute your acknowledgment and
acceptance of same:

     (a)  This option shall not be transferable under any circumstances except
          by operation of law. During your lifetime, this option is only
          exercisable by you, and after your death, is only exercisable by your
          estate.

     (b)  The price at which this option may be exercised shall be $ per share,
                                                                   -
          for a total exercise price of $.
                                        -

     (c)  This option is exercisable commencing six months from your hire date
          and at any time hereafter through [five years from today's grant
          date], subject to the following terms:
<PAGE>

          (1)  In the event of termination of your employment with the Company
               (or a parent or subsidiary of the Company) for any reason other
               than death or disability as defined in Internal Revenue Code
               Section 22(e)(3), as amended (the "Code"), all unexercised
               options shall terminate immediately.

          (2)  In the event of termination of your employment as a result of
               your death, the outstanding options exercisable by you at the
               date of your death may be exercised by your estate until one (1)
               year from the date of your death, but in any event no later than
               November 11, 2004.

          (3)  In the event of termination of your employment as a result of
               your disability, as above defined, or in the event of a
               disability that lasts for more than ninety (90) days, all
               outstanding options exercisable by you at the date of such
               termination shall terminate one (1) year from the date your
               employment terminates, but in any event no later than [option
               termination date].

          (4)  Notwithstanding anything herein to the contrary, the maximum
               extent to which this option may be exercised is as follows:

                      Dates                            Up to
                      -----                            -----

               After six (6) months of employment       20%
               After one (1) year of employment         40%
               After two (2) years of employment        60%
               After three (3) years of employment      80%
               After four (4) years of employment      100%

     (d)  This option may not be exercised as to less than one hundred (100)
          shares at any one time unless it is being exercised in full and the
          balance of the shares subject to this option is less than one hundred
          (100).

     (e)  The shares of Common Stock underlying this option and the exercise
          price therefore shall be appropriately adjusted from time to time for
          stock splits, reverse splits, stock dividends and reclassifications of
          shares.

     (f)  In the event of a sale or acquisition of substantially all of the
          stock or assets of the Company, the Company shall give at least thirty
          (30) days' notice of such an event to you and you may exercise up to
          100% of the vested portion of this option; if you do not exercise the
          option within thirty (30) days of such notice, all unexercised
          portions of this option shall terminate and be of no further force or
<PAGE>

          effect. Notwithstanding the foregoing, additional shares underlying
          this option grant may vest in accordance with the provisions of
          Exhibit A of your Employment Agreement of even date with the Company.

     This opportunity to purchase stock in the Company is being offered because
of the Company's desire to reward continuing loyal service. Exercising options
may not be a prudent business decision for some employees. Therefore, we urge
you to review this opportunity carefully and make a decision to exercise options
only if your personal financial situation makes this a wise choice.

     When you wish to exercise this stock option, please refer to the provisions
of this letter and then correspond in writing with the Secretary of the Company.
Further, please indicate your acknowledgment and acceptance of this option by
signing the enclosed copy of this letter and returning it to the undersigned.

                                   Very truly yours,

                                   APPLIED SCIENCE AND TECHNOLOGY, INC.

                                   By: /s/ John M. Tarrh
                                       --------------------------------
                                   John M. Tarrh
                                   Chief Financial Officer/Senior Vice President

ACKNOWLEDGMENT AND ACCEPTANCE:

/s/ William S. Hurley
---------------------------------
William S. Hurley

<PAGE>

                                    EXHIBIT E (Non-Qualified Option)
                                    --------------------------------

                     APPLIED SCIENCE AND TECHNOLOGY, INC.
                                 35 Cabot Road
                         Woburn, Massachusetts  01801

                                    Effective: November 11, 1999

William S. Hurley
23 Overlook Drive
Westboro, MA  01581

Dear Bill:

     I am pleased to advise you that APPLIED SCIENCE AND TECHNOLOGY, INC. (the
"Company") has, pursuant to its 1993 Stock Option Plan (the "1993 Plan"),
awarded you a non-qualified stock option to purchase [Note: Remainder of 40,000
option grant not qualifying for incentive stock option treatment] shares of the
Common Stock, $.01 par value per share, of the Company at an exercise price of $
                                                                               -
per share, for a total exercise price of $. The Company is making this offer to
                                         -
"share the business" with valued employees such as yourself. We hope that by
owning a piece of the Company you will continue your efforts towards helping the
Company grow and succeed.

     The following terms and conditions are applicable with respect to this
option, and your signature below shall constitute your acknowledgment and
acceptance of same:

     (a)  This option shall not be transferable under any circumstances except
          by operation of law. During your lifetime, this option is only
          exercisable by you, and after your death, is only exercisable by your
          estate.

     (b)  The price at which this option may be exercised shall be $ per share,
                                                                   --
          for a total exercise price of $.
                                        -

     (c)  This option is exercisable commencing six months from your hire date
          and at any time hereafter through [five years from today's grant
          date], subject to the following terms:

          (1)  In the event of termination of your employment with the Company
               (or a parent or subsidiary of the Company) for any reason other
               than death or disability as defined in Internal Revenue Code
               Section 22(e)(3), as
<PAGE>

               amended (the "Code"), all unexercised options shall terminate
               immediately.

          (2)  In the event of termination of your employment as a result of
               your death, the outstanding options exercisable by you at the
               date of your death may be exercised by your estate until one (1)
               year from the date of your death, but in any event no later than
               November 11, 2004.

          (3)  In the event of termination of your employment as a result of
               your disability, as above defined, or in the event of a
               disability that lasts for more than ninety (90) days, all
               outstanding options exercisable by you at the date of such
               termination shall terminate one (1) year from the date your
               employment terminates, but in any event no later than [option
               termination date].

          (4)  Notwithstanding anything herein to the contrary, the maximum
               extent to which this option may be exercised is as follows:

                      Dates                            Up to
                      -----                            -----

               After six (6) months of employment       20%
               After one (1) year of employment         40%
               After two (2) years of employment        60%
               After three (3) years of employment      80%
               After four (4) years of employment      100%

     (d)  This option may not be exercised as to less than one hundred (100)
          shares at any one time unless it is being exercised in full and the
          balance of the shares subject to this option is less than one hundred
          (100).

     (e)  The shares of Common Stock underlying this option and the exercise
          price therefore shall be appropriately adjusted from time to time for
          stock splits, reverse splits, stock dividends and reclassifications of
          shares.

     (f)  In the event of a sale or acquisition of substantially all of the
          stock or assets of the Company, the Company shall give at least thirty
          (30) days' notice of such an event to you and you may exercise up to
          100% of the vested portion of this option; if you do not exercise the
          option within thirty (30) days of such notice, all unexercised
          portions of this option shall terminate and be of no further force or
          effect. Notwithstanding the foregoing, additional shares underlying
          this option grant may vest in accordance with the provisions of
          Exhibit A of your Employment Agreement of even date with the Company.
<PAGE>

     This opportunity to purchase stock in the Company is being offered because
of the Company's desire to reward continuing loyal service. Exercising options
may not be a prudent business decision for some employees. Therefore, we urge
you to review this opportunity carefully and make a decision to exercise options
only if your personal financial situation makes this a wise choice.

     When you wish to exercise this stock option, please refer to the provisions
of this letter and then correspond in writing with the Secretary of the Company.
Further, please indicate your acknowledgment and acceptance of this option by
signing the enclosed copy of this letter and returning it to the undersigned.

                              Very truly yours,

                              APPLIED SCIENCE AND TECHNOLOGY, INC.

                              By: /s/ John M. Tarrh
                                  ------------------------------------
                                  John M. Tarrh, Chief Financial
                                    Officer/Senior Vice President

ACKNOWLEDGMENT AND ACCEPTANCE:

/s/ William S. Hurley
---------------------
William S. Hurley

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