Document:

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                                                                    EXHIBIT 10.3

                                    SUBLEASE

         This Sublease is dated June 9, 1999, and is by and between AQUILA
BIOPHARMACEUTICALS, INC., a Delaware corporation, with an address of 175
Crossing Boulevard, Framingham, MA ("Sublessor") and EPRISE CORPORATION, a
Delaware corporation, with an address of 1671 Worcester Road, Framingham, MA
(Sublessee").

         WHEREAS, Sublessor is the Lessee under a lease by and between NDNE 9/90
Corporate Center, LLC (the "Prime Lessor") and Sublessor dated as of September
19, 1997, a copy of which is attached hereto as Exhibit A, which lease is
hereinafter referred to as the "Prime Lease"; and

         WHEREAS, Sublessee desires to sublet a portion of the premises
described in the Prime Lease being approximately 4,300 square feet on the second
floor and shown on a plan attached hereto as Exhibit B, (the "Premises") and
Sublessor is willing to sublet the same on the conditions hereinafter set forth.

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are acknowledged, Sublessor and Sublessee covenant and
agree as follows:

         1. Term and Premises. Sublessor hereby sublets and demises unto
Sublessee and Sublessee hereby takes and hires from Sublessor the Premises, for
a term commencing when the Premises are available for Sublessee's occupancy
(anticipated to be July 1, 1999) and ending September 30, 2000 (the "Term"),
subject to the terms and provisions of the Prime Lease and in accordance with
terms, covenants, conditions and provisions herein set forth. In the event the
Premises are not available for Sublessee's occupancy by September 1, 1999, this
sublease may be cancelled by Sublessee by notice to Sublessor given within 10
days after such date, and this Sublease shall be without recourse to either
party. The Premises shall be deemed available for Sublessee's occupancy as soon
as the Landlord's Work set forth on Exhibit D has been substantially completed
insofar as practicable in view of delays or defaults of Sublessee provided

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Sublessor is able to procure, at its sole expense, of a Certificate of Occupancy
from the Town of Framingham for Sublessee's use and occupation of the Premises.
The Premises shall not be deemed to be unavailable for Sublessee's occupancy if
only minor or insubstantial detail of construction or mechanical adjustments
remain to be done on the Premises. The Premises are located on certain land
known as 175 Crossing Boulevard, Framingham, Massachusetts and constitute a
portion of a building located thereon (the "Property"). Sublessee shall have, as
appurtenant to the Premises, rights to use in common with others entitled
thereto, subject to the terms and conditions of the Prime Lease and this
Sublease and to reasonable rules from time to time made by Sublessor of which
Sublessee is given notice: (a) the common lobbies, hallways, stairways and
elevators of the Property serving the Premises, (b) common walkways necessary
for access to the Property, and (c) the common toilets on the third floor of the
building in which the Premises is located; and no other appurtenant rights or
easements'.

          2. Rent. Sublessee covenants and agrees to pay to Sublessor at the
address set forth on page one of this Sublease, or to such other address as
Sublessor may specify by notice to Sublessee, the minimum annual and minimum
monthly rent ("Rent") in the amounts and at the times specified in Exhibit C,
without notice or demand and without abatement, deduction or set off of any
amount whatsoever.

          3. Additional Rent. Sublessee shall pay to Sublessor the following
payments ("Additional Rent"):

                  If any tax year commencing with fiscal year 2001 (commencing
July 1, 2000 and ending June 30, 2001), the real estate taxes on the Premises
(as allocated in accordance with the terms and conditions of the Prime Lease)
are in excess of the amount of the real estate taxes thereon for fiscal year
2000 (the "Tax Base Year"), Sublessee will pay to Sublessor as additional rent
hereunder, when and as designated by notice in writing by Sublessor, all of such
excess (the "Tax Payment") that may occur in each year of the Term or any
extension or renewal thereof and proportionately for any part of a fiscal year.
Notwithstanding the foregoing, Sublessee shall not

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be responsible for any Tax Payment in excess of 10.5% of the tax escalation for
which Sublessor is liable under the Prime Lease. Sublessee shall not be
responsible for payment of any Park Common Expenses, as that term is used in the
Prime Lease.

         4. Utilities. Sublessor shall supply and pay for water, heat, electric,
air conditioning, cleaning, trash removal, security and fire protection.
Sublessee shall pay Sublessor an amount equal to ninety cents (900) per square
foot of the Premises, which amount shall be calculated on an annual basis and
payable on a monthly basis in addition to Rent in accordance with Exhibit C.

         5. Use. Sublessee covenants and agrees to use the Premises only for the
purposes permitted by the Prime Lease and for no other purpose whatsoever. The
Premises shall be open to visitors of Sublessee during the following times:

      8:00 a.m.  to 6:00 p.m. - Monday through Friday (excluding legal holidays)
      8:00 a.m.  to 1:00 p.m. - Saturday

Sublessee shall have reasonable access to the Premises at all times, provided,
however, that such access shall otherwise be subject to the terms and conditions
of the Prime Lease, including, but not limited to, the Rules and Regulations
attached as Exhibit F thereto.

         Sublessee shall not use or store any oil or hazardous material on the
Premises, or discharge any such hazardous material to the septic system or sewer
serving the Premises, except in compliance with all federal, state and local
laws, ordinances and regulations pertaining thereto (hereinafter collectively
referred to as "Applicable Laws"). As used herein, "hazardous material" shall
mean oil and hazardous materials as defined in the Massachusetts Oil and
Hazardous Material Release Prevention and Response Act, Massachusetts General
Laws Chapter 21E and any regulations issued thereunder. Sublessee agrees that,
if Sublessee or anyone claiming under Sublessee shall release or discharge any
hazardous material on, into or under the Premises, or to the septic system or
sewer serving the Premises, or to property adjacent to the Premises,

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Sublessee shall forthwith remove the same in the manner provided by Applicable
Laws and shall indemnify and hold Sublessor harmless from and against any and
all claims, costs, expenses and liabilities, including attorneys' fees, arising
from such release or discharge. Sublessor shall indemnify and hold Sublessee
harmless from and against any and all claims, costs, expenses and liabilities,
including attorneys' fees, arising from a release or discharge of hazardous
material by the Sublessor during the period of its occupancy of the Premises,
on, into or under the Premises, or to the septic system or sewer system serving
the Premises, or, to property adjacent to the Premises. The obligations
contained in this Section shall survive the expiration or termination of the
term of this Sublease.

         6. Parking and Loading Area. Sublessee shall have access free of charge
to a minimum of four (4) unassigned parking spaces per one thousand (1,000)
rentable square feet of floor space. Sublessee shall also have access, in common
with others (including any other tenant or tenants of the Property) to the
freight elevator and loading dock located at or in the Property.

         7. Signage. In accordance with the terms and conditions contained in
the Prime Lease, including, but not limited to, the Rules and Regulations
attached as Exhibit F thereto, Sublessee shall be permitted to install signage
or other means of identification next to Sublessee's entrance door and Sublessee
shall be included in the Property's lobby directory.

         8. Insurance. Sublessee agrees to observe the provisions of Section 7
of the Prime Lease with respect to the use of the Premises and the insurance
requirements with respect thereto except that Sublessee shall not be obligated
to obtain or pay for any of the property or liability insurance coverage
required under the Prime Lease or to provide for environmental insurance.
Sublessee shall maintain a commercial general liability insurance policy with
respect to the Premises reasonably acceptable to Sublessor and the Prime Lessor.
Sublessee shall maintain its own insurance with respect to its personal
property. Sublessee shall provide Sublessor with a Certificate of Insurance
evidencing such insurance coverage as is acceptable to Sublessor and Prime
Lessor prior to the commencement of the Term.

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         9. Waiver of Subrogation. Sublessor and Sublessee each hereby release
each other, to the extent of any insurance coverage, from any and all liability
for any loss or damage caused by fire or any of the extended coverage casualties
or any other casualty insured against, even if such fire or other casualty shall
be brought about by the fault or negligence of Sublessor or Sublessee or its or
their agents; provided, however, this release shall be in force and effect only
with respect to loss or damage occurring during such time as' policies covering
such loss or damage shall contain a clause to the effect that this release shall
not affect said policies or the right to recover thereunder. Sublessor and
Sublessee agree that their fire and other casualty insurance policies will
include such a clause so long as the same is includable without extra cost, or
if extra cost is chargeable therefor, so long as the other party is given the
opportunity and elects to pay such extra costs.

         10. Condition of Premises; Maintenance and Repairs. Sublessor
represents that, to its knowledge, the building and systems of which the
Premises are a part are in good order and satisfactory condition. Sublessee
acknowledges that it has inspected the Premises and agrees to accept the
Premises in "AS IS" condition, except as expressly set forth herein or on
Exhibit D. and further acknowledges that no other representations or warranties
as to the condition thereof have been made to it by Sublessor. By taking
possession of the Premises, Sublessee is deemed to have accepted the Premises
and agreed that the Premises is in good order and satisfactory condition. In
addition to the provisions set forth in Exhibit D, during the Term, Sublessor,
at its own cost and expense, shall maintain and make all necessary repairs to
the electrical, mechanical, heating, ventilating and air conditioning, plumbing
and other systems inside the Premises, provided, however, that Sublessee shall
(i) promptly give notice to Sublessor notice of any repairs required to be made
by the Sublessor hereunder; (ii) make any repairs, at Sublessee's sole expense,
to the Premises necessitated by the acts or negligence of Sublessee or its
agents, employees or invitees; and (iii) make all interior non-structural and
non-system repairs, replacements and renewals necessary, at Sublessee's sole
expense, to keep the Premises in as good condition, order and repair as the same
are at the commencement of the Term or thereafter

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may be put, reasonable wear and use and damage by fire or other casualty only
excepted (it being understood, however, that the foregoing exception for
reasonable wear and use shall not relieve Sublessee from the obligation to keep
the Premises in good order, repair and condition, free from accumulation of
dirt, rubbish and other debris).

         11. Assignment and Subletting. Sublessee shall not assign this
Sublease, nor underlet the whole or any part of the Premises or suffer or permit
any other person to occupy the same without first obtaining, on each occasion,
the written consent of the Sublessor, which shall not be unreasonably withheld
or denied, and in all events, Sublessee agrees to pay all Sublessor's reasonable
attorneys fees in connection with such assignment and/or subletting and the cost
of preparation of any documents required by the Sublessor. Sublessor's consent
under this paragraph shall be expressly conditioned upon Sublessor's ability to
obtain consent for the same from the Prime Lessor and any mortgagee of the
Property, the Premises or any portion(s) thereof. In all events the Sublessee
will continue to remain responsible to the Sublessor for the payment of all rent
and performance of all obligations contained herein. At Sublessor's election,
Sublessor may require Sublessee to cause any permitted Sub-Sublessee to pay its
rent directly to Sublessor.

         12. Release and Indemnification. Sublessee will save Sublessor
harmless, and will exonerate, defend and indemnify Sublessor, from and against
any and all claims, liabilities or penalties asserted by or on behalf of any
person, firm, corporation or public authority:

                  (a) On account of or based upon any injury to person, or loss
of or damage to property, sustained or occurring on the Premises on account of
or based upon the act, omission, fault, negligence or misconduct of any person
whomsoever (other than Sublessor);

                  (b) On account of or based upon any injury to person, or loss
of or damage to property, sustained or occurring elsewhere (other than on the
Premises) in or about the Property (and, in particular, without limiting the
generality of the foregoing, on or about the elevators,

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stairways, public corridors, sidewalks, approaches, areaways, or other
appurtenances and facilities used in connection with the Property or the
Premises) arising out of the use or occupancy of the Property or the Premises by
the Sublessee, or by any person claiming by, through or under Sublessee, on
account of or based upon the act, omission, fault, negligence or misconduct of
all persons other than and those for whose conduct the Sublessor is legally
responsible;

                  (c) On account of or based upon (including monies due on
account of) any work or thing whatsoever done (other than by Sublessor or its
contractors, or agents or employees of either) on the Premises during the term
of this Sublease and during the period of time, if any, prior to the
commencement of the Term that Sublessee may have been given access to the
Premises; and

                  (d) On account of or resulting from the failure of Sublessee
to perform and discharge any of its covenants and obligations under this
Sublease and, in respect of any of the foregoing, from and against all costs,
expenses (including reasonable attorneys' fees), and liabilities incurred in or
in connection with any such claim, or any action or proceeding brought thereon;
and in case any action or proceeding be brought against Sublessor by reason of
any such claim, Sublessee upon notice from Sublessor shall at Sublessee's
expense resist or defend such action or proceeding and employ counsel therefor
reasonably satisfactory to Sublessor, it being agreed that such counsel as may
act for insurance underwriters of Sublessee engaged in such defense shall be
deemed satisfactory.

         13. Property of Sublessee. In addition to and not in limitation of the
foregoing, Sublessee covenants and agrees that all merchandise, furniture,
fixtures and property of every kind, nature and description which may be in or
upon the Premises or the Property, in the public corridors, or on the sidewalks,
areaways and approaches adjacent thereto, during the term hereof, shall be at
the sole risk and hazard of Sublessee, and that if the whole or any part thereof
shall be damaged, destroyed, stolen or removed from any cause or reason
whatsoever no part of said

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damage or loss shall be charged to, or borne by, Sublessor.

         14. Bursting, of Pipes, Etc. Sublessor shall not be liable for any
injury or damage to persons or property resulting from fire, explosion, falling
plaster, steam, gas, electricity, electrical disturbance, water, rain or snow or
leaks from any part of the Property or from the pipes, appliances or plumbing
works or from the roof, street or sub-surface or from any other place or caused
by dampness or by any other cause of whatever nature, unless caused by or due to
the negligence of Sublessor, its agents, servants or employees, and then only
after (i) notice to Sublessor of the condition claimed to constitute negligence
and (ii) the expiration of a reasonable time after such notice has been received
by Sublessor without Sublessor having taken all reasonable and practical action
to cure or correct such condition; and pending such cure or correction by
Sublessor, Sublessee shall take all reasonably prudent temporary measures and
safeguards to prevent any injury, loss or damage to persons or property. In no
event shall Sublessor be liable for any loss, the risk of which is covered by
Sublessee's insurance; nor shall Sublessor or its agents be liable for any such
damage caused by other tenants or persons in the Property or caused by
operations in construction of any private, public, or quasi-public work; nor
shall Sublessor be liable for any latent defect in the Premises or in the
Property.

         15. Damage, Destruction or Taking. Sublessor and Sublessee agree that
in the event the Premises are destroyed, damaged by fire or other casualty, or
taken by eminent domain, payment of rent and the right to terminate this
Sublease shall be governed by the provisions of Section 10 of the Prime Lease;
if the Prime Lease terminates, this Sublease shall simultaneously terminate. In
the event of a casualty or eminent domain taking where the insurance proceeds or
eminent domain award are not adequate to complete restoration, Sublessee agrees
that the obligation to restore shall be conditioned upon Sublessee's agreement
to pay all amounts which shall be required in addition to the insurance proceeds
or the net eminent domain award to enable the Prime Lessor to complete such
restoration. In the event there is a taking by eminent domain which affects any
additions, alterations or improvements made by the Sublessee under plans and
specifications approved by the Sublessor, then the Sublessee shall be entitled
to collect its

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unamortized costs as calculated for tax purposes of all such additions,
alterations and improvements which were realty items, less Sublessee's
proportionate share of the cost of collecting the eminent domain award. With
respect to any additions, alterations and improvements made by the Sublessor,
Sublessor shall be entitled to collect its unamortized costs as calculated for
tax purposes.

         16. Default and Remedies. This Sublease is upon the condition, that if
the Sublessee shall neglect or fail to perform or observe any of the Sublessee's
covenants contained herein, or if the estate hereby created shall be taken on
execution, or by other process of law, or to the extent permitted by law, if a
petition shall be filed by or against the Sublessee under the United States
Bankruptcy Code or acts amendatory thereof or supplemental thereto, or if any
assignment shall be made of the Sublessee's property for the benefit of
creditors, or if a receiver, or other similar officer shall be appointed to take
charge of all or any part of the Sublessee's property by a court of competent
jurisdiction, or if Sublessee vacates, deserts or abandons the Premises or
discontinues the conduct of its business therein, then, and in any of the said
cases (notwithstanding any license of any former breach of covenant or waiver of
the benefit thereof or consent in a former instance), the Sublessor lawfully
may, without demand or notice, enter into and upon the Premises or any part
thereof in the name of the whole, and repossess the same as of the Sublessor's
former estate and expel the Sublessee and those claiming through or under the
Sublessee and remove their effects (forcibly if necessary) without being deemed
guilty of any manner of trespass, and without prejudice to any remedies which
might otherwise be used for arrears of rent or preceding breach of covenant, and
upon entry as aforesaid, this Sublease shall terminate; and the Sublessee
covenants that, in case of such termination or of termination under the
provisions of law for the Sublessee's default, the Sublessee will, at the
election of the Sublessor, which election may be made or changed at any time:
(a) pay to the Sublessor sums equal to the rent and other payments to be paid by
the Sublessee at the same times and in the same installments as specified in
this Sublease during the remainder of the term, less the net amount received by
the Sublessor from reletting the Premises, after deducting all costs and
expenses incurred in connection with such reletting; or, (b) pay to the
Sublessor, as damages,

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such a sum as at the time of such termination or at the time to which
installments under (a) above shall have been paid represents the excess of the
rent and other payments to be paid hereunder by the Sublessee above the rental
value of the Premises for the remainder of said term; or, (c) indemnify the
Sublessor against loss of the rent and other payments to be paid hereunder by
the Sublessee from the time of such termination or from the time to which
installments under (a) above shall have been paid to the expiration of said
term.

         17. Enforcement and Delivery of Premises at Termination. The Sublessee
agrees that it will pay all the Sublessor's expenses, including attorneys fees
incurred in enforcing any obligation of the Sublessee or remedies of the
Sublessor under this Sublease, or in recovering possession of the Premises.
Sublessee agrees that the Premises will at the expiration or earlier termination
of this Sublease be delivered in the same condition as is specified in Section
9.8 of the Prime Lease and that the Sublessor shall have the same rights to
remove and store Sublessee's property not removed at the termination of this
Sublease as are specified in said Section 9.8 of the Prime Lease.

         18. Notices. All notices or other communications hereunder shall be in
writing and delivered by registered or certified mail, return receipt requested,
postage prepaid, addressed as follows: If to Sublessor, at 175 Crossing
Boulevard, Framingham, MA 01701, Attention: Chief Financial Officer; and if to
Sublessee at 1671 Worcester Road, 4th Floor, Framingham, MA 01701, Attention:
Chief Financial Officer. Notices shall be deemed given when mailed and otherwise
on the earlier to occur of the date of delivery or the date delivery was first
attempted, as shown by postal records. The parties hereto may, from time to
time, by notice given hereunder, designate any different address to which
subsequent notices, certificates or other communications shall be sent.

         19. Broker. Sublessee warrants and represents that it has not dealt
with any real estate broker other than Fallon, Hines & O'Connor, Inc. and C13
Richard Ellis Whittier Partners (collectively the "Brokers") in connection with
the Premises or this Sublease. Full payment to

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the Brokers will be made by Sublessor pursuant to a separate agreement.
Sublessee shall indemnify and hold Sublessor harmless from and against any
liability for commissions due any real estate broker or finder other than the
Brokers with whom Sublessee has dealt in connection with this Sublease.

         20. Security Deposit. Sublessee has, simultaneously herewith, deposited
with Sublessor cash in the principal sum of Nine Thousand Four Hundred
Ninety-five and 00/100 Dollars ($9,495.00). Said deposit shall be held by
Sublessor as security for the faithful performance by Sublessee of the terms,
covenants, provisions and conditions of this Sublease (and in the event of
transfer of ownership of the Premises by Sublessor, Sublessor agrees and
Sublessee consents to the transfer of such security deposit to the new owner).
It is agreed that in the event that Sublessee defaults in respect to any of the
terms, covenants, provisions or conditions of this Lease (including, but not
limited to, the payment of Rent and Additional Rent) Sublessor may use, apply or
retain the whole or any part of the security so deposited to the extent required
for the payment of any Rent or Additional Rent or any other sum as to which
Sublessee is in default or any sum which Sublessor may expend or may be required
to expend by reason of Sublessee's default, in respect to any of the terms,
covenants, provisions, and conditions of this Lease (including, but not limited
to, any damages or deficiencies accrued before or after summary proceedings or
re-entry by Sublessor). Sublessee shall not be entitled to any interest on the
aforesaid deposit of security.

         In the event that Sublessee shall fully and faithfully comply with all
the terms, provisions, covenants and conditions of this Sublease, the security
deposit shall be refunded to Sublessee within thirty (30) days following the
later of the date fixed at the end of this Sublease or the date of delivery of
entire possession of the Premises to Sublessor.

         21. Subordination. This Sublease shall be subject and subordinate to
any existing or new mortgage covering all or part of the Premises and Sublessee
agrees to execute all documents requested for the purpose of effectuating the
subordination of this Sublease to such mortgage or

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mortgages.

         22. Special Provisions - Prime Lease. To the extent not otherwise
inconsistent with the agreements and understandings expressed in this Sublease
or applicable only to the original parties to the Prime Lease, the terms,
provisions, covenants and conditions of the Prime Lease are hereby incorporated
herein by reference on the following understandings:

                  (a) In any case where the Prime Lessor reserves the right to
enter the Premises, said right shall inure to the Prime Lessor as well as to
Sublessor herein.

                  (b) Each party hereto agrees to perform and comply with the
terms, provisions, covenants and conditions of the Prime Lease and not to do or
suffer or permit anything to be done which would result in a default under, or
cause the Prime Lease to be terminated or forfeited.

                  (c) In the event that any mechanic's lien or other lien is
filed against the Premises, or any part thereof, for any reason whatsoever by
reason of Sublessee's acts or failure to act, then Sublessee shall cause same to
be discharged within ten (10) days after notice by Sublessor.

                  (d) In the event that any provisions of this Sublease are
inconsistent with the provisions of the Prime Lease, then the terms of the Prime
Lease shall control and be binding upon the parties.

                  (e) All the rights and obligations contained in the Prime
Lease conferred and imposed upon Sublessor (as Lessee therein), except as
modified and amended by this Sublease, are hereby conferred and imposed upon
Sublessee. It is expressly agreed that Sublessee shall have no payment
obligations under the Prime Lease except such as are set forth herein for any
obligation for the portion of Sublessor's Premises under the Prime Lease not
subject to this

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Sublease.

                  (f) It is understood and agreed (i) that Sublessor, except as
otherwise provided herein, shall not be liable for the performance of any of the
obligations of the Prime Lessor under the Prime Lease; (ii) that Sublessee shall
have no claim against Sublessor by reason of any default in fulfilling such
obligations upon the part of the Prime Lessor unless such default results from
Sublessor's being in default under the Prime Lease and not due to a default of
Sublessee hereunder, or from Sublessor's willful misconduct; (iii) that
Sublessor further agrees to send any notices reasonably requested by the
Sublessee to the Prime Lessor pursuant to the terms of the Prime Lease provided
said notices are received from Sublessee in writing and within reasonable time
to allow Sublessor to satisfy the time requirements for sending such notice
under the terms of the Prime Lease; and (iv) that Sublessee, except as expressly
provided herein, shall not be liable for the performance of any of the
obligations of Sublessor under the Prime Lease.

                  (g) Sublessee will fully and faithfully perform the terms and
conditions of the Prime Lease on its part to be performed, and in addition
thereto, Sublessee will not do or cause to be done or suffer or permit any act
or thing to be done which would or might cause the Prime Lease or the rights of
Sublessor as Lessee under the Prime Lease to be endangered, cancelled,
terminated, forfeited, or surrendered, or which would or might make Sublessor
liable for any damages, claim or penalty, and in such event, Sublessee, agrees,
as an express inducement for Sublessor's entering into this Sublease, that if
there is any conflict between the provisions of this Sublease and the provisions
of the Prime Lease which would permit Sublessee to do or cause to be done or
suffer or permit any act or thing to be done which is prohibited by the Prime
Lease, then the provisions of the Prime Lease shall prevail.

                  (h) With respect to work, services, repairs and restoration or
the performance of other obligations required of the Prime Lessor under the
Prime Lease, if any, Sublessor's sole obligation with respect thereto, shall be
to request the same, after requested by Sublessee, and to send all notices
required under the Prime Lease to the Prime Lessor, as the case may be.

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                  (i) In the event the Prime Lease is terminated prior to the
expiration or earlier termination of this Sublease, this Sublease shall
immediately terminate and be without recourse to either party.

          23.     Miscellaneous.

                  (a) Entire Agreement. This instrument contains the entire and
exclusive agreement between the parties and supersedes all prior arrangements,
understandings and agreements, whether oral or written. This Sublease may not be
amended or modified except by a written instrument executed by the Sublessor and
the Sublessee.

                  (b) Waivers. One or more waivers of any covenant or condition
by Sublessor shall not be construed as a waiver of a subsequent breach of the
same or any other covenant or conditions, and the consent or approval by
Sublessor to or of any act by Sublessee requiring Sublessor's consent or
approval shall not be construed to waive or render unnecessary Sublessor's
consent or approval to or of any subsequent similar act by Sublessee.

                  (c) Governing Law and Severability. This Sublease shall be
governed by and interpreted in accordance with the laws of The Commonwealth of
Massachusetts. In the event any provision of this Sublease shall be determined
invalid or unenforceable under applicable law, or shall be determined to be a
violation of the Prime Lease, this Sublease shall be construed as if such
provision had never been made part hereof, but shall otherwise continue in full
force and effect.

                  (d) Headings. The headings used herein are used only for
convenience of reference and are not to be considered part of this Sublease or
to be used in determining the intent of the parties hereto.

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                  (e) Binding Effect. This Sublease shall be binding upon and
inure to all successors and permitted assigns, including all permitted
subtenants, of the parties hereto.

                  (f) No Joint Venture. Sublessor shall in no event be
construed, held or become in any way or for any purpose a partner, associate or
joint venturer of Sublessee or any party associated with Sublessee in the
conduct of its business or otherwise.

                  (g) Waiver. SUBLESSEE KNOWINGLY AGREES TO AND HEREBY WAIVES
ANY AND ALL RIGHTS TO TRIAL BY JURY IN ANY MATTER ARISING OUT OF THIS SUBLEASE
OR OTHERWISE WITH THE SUBLESSOR.

                  (h) Cumulative Remedies. The specific remedies to which
Sublessor may resort under the terms of this Sublease are cumulative and are not
intended to be exclusive of any other remedies or means of redress to which it
may be lawfully entitled in case of any breach or threatened breach by Sublessee
of any provisions of this Sublease. In addition to the other remedies provided
in this Sublease, Sublessor shall be entitled to the restraint by injunction of
the violation or attempted or threatened violation of any of the covenants,
conditions or provisions of this Sublease or to a decree compelling specific
performance of any such covenants, conditions or provisions.

                                      -15-

<PAGE>   16

                  (i) Time of Essence. All times are of the essence in this
Sublease.

         IN WITNESS WHEREOF, Sublessor and Sublessee have executed this Sublease
as an instrument under seal by their duly authorized officers on the day and the
year first above written

                  Sublessor:     AQUILA BIOPHARMACEUTICALS, INC.

                                 By:____________________________________________
                                    Its: President and Chief Executive Officer

                  Sublessee:     EPRISE CORPORATION

                                 By: /s/ Milton Alpern
                                     Its: Chief Financial Officer

                                      -16-

<PAGE>   17

                                    EXHIBIT A

                                 The Prime Lease

<PAGE>   18

                                    EXHIBIT B

                                Plan of Premises

<PAGE>   19

                                    EXHIBIT C

Any installments of rent accruing under the provisions of this Sublease or any
other payments to be made by Sublessee to Sublessor under the terms of this
Sublease which are not paid when due shall bear interest upon default at the
rate of I-V2% per month (18% per annum) from the date due until paid.

 Rent per       Square Footage      Minimum        Minimum
Square Foot    of the Premises    Annual Rent    Monthly Rent     Payment Date

  $26.50            4,300           $113,950      $9,495.83     1st day of each
                                                                month in advance

Utilities per    Square Footage       Annual       Monthly
Square Foot      of the Premises     Utilities     Utilities      Payment Date

   $.90              4,300            $3,870        $322.50     1st day of each
                                                                month in advance

<PAGE>   20

                                    EXHIBIT D

                                   Work Letter

          This Exhibit is attached to and made a part of the Sublease dated June
9, 1999, by and between Aquila Biopharmaceuticals, Inc., a Delaware corporation,
with an address of 175 Crossing Boulevard, Framingham, Massachusetts
("Sublessor") and Eprise Corporation, a Delaware corporation, with an address of
1671 Worcester Road, Framingham, MA (Sublessee").

          1. This Work Letter shall set forth the obligations of Sublessor and
Sublessee with respect to the preparation of the Premises for Sublessee's
occupancy. All improvements described in this Work Letter to be constructed in
and upon the Premises by Sublessor are hereinafter referred to as the
"Sublessor's Work" and which term is described further in Section 6 below. It is
agreed that construction of the Sublessor's Work will be completed at
Sublessor's sole cost and expense. Sublessor shall enter into a direct contract
for the Sublessor's Work with a general contractor selected by Sublessor. In
addition, Sublessor shall have the right to select and/or approve of any
subcontractors used in connection with the Sublessor's Work.

          2. Sublessor shall prepare the final architectural, electrical and
mechanical construction drawings, plans and specifications consistent with the
sketch attached hereto (the "Plans") necessary to construct the Sublessor's
Work, which Plans shall be subject to Sublessee's review and approval within
five (5) business days, as further described below. Sublessor shall be
responsible for all elements of the design of the Plans.

         3. Sublessor shall provide Sublessee with five (5) business days to
review the Plans prior to commencing the Sublessor's Work. If Sublessee shall
request any change within such five (5) day period, addition or alteration in
any of the Plans and Sublessor elects, in its sole discretion, to consent to
such change, addition or alteration, Sublessor shall have such revisions to the
Plans prepared, and Sublessee shall reimburse Sublessor for the reasonable cost
thereof upon demand. Promptly upon completion of the revisions, Sublessor shall
notify Sublessee in writing of the increased cost that will be chargeable to
Sublessee by reason of such change, addition or deletion. Sublessee, within
three (3) business days, shall notify Sublessor in writing whether it desires to
proceed with such change, addition or deletion and be responsible for the Excess
Costs (as defined below) resulting therefrom. In the absence of such written
authorization, Sublessor shall have the option to continue work on the Premises
disregarding the requested change, addition or alteration, or Sublessor may
elect to discontinue work on the Premises until it receives notice of
Sublessor's decision, in which event Sublessee shall be responsible for any
delay in completion of the Premises resulting therefrom. In the event Sublessee
elects to provide such written authorization, Sublessee agrees to reimburse
Sublessor for any increase in the estimated cost of construction and/or higher
actual construction costs which are result of such change, alteration or
addition ("Excess Costs").

         4. Following finalization of the Plans and the payment by Sublessee of
the required

<PAGE>   21

portion of the Excess Costs, if any, Sublessor shall cause the Sublessor's Work
to be constructed substantially in accordance with the approved Plans. During
such time as the Sublessor is completing Sublessor's Work, Sublessee shall be
provided with reasonable access to the Premises provided such access does not
unreasonably interfere with Sublessor's ability to complete Sublessor's Work.
Sublessor shall notify Sublessee of substantial completion of Sublessor's Work.

         5. Sublessor's Work shall be performed in a good and workmanlike manner
in accordance with all applicable laws, regulations, codes, ordinances and rules
of municipal and other authorities having jurisdiction.

         6. Sublessor's Work shall consist of the completion of improvements to
the Premises in accordance with the Plans, which improvements shall include the
construction of four (4) offices, one (1) copy/fax/storage room, one (1)
conference room suitable for ten (10) occupants, one (1) conference room
suitable for twelve (12) occupants, one room for the siting of phone and data
cabling, one (1) sink, and a reception area. Sublessee shall be solely
responsible the cost of the installation of phone and data cabling. The
carpeting, walls (including wall coverings) and ceilings to be utilized in the
completion of the Sublessor's Work shall be of the same type and material
utilized by Sublessor in that portion of the premises described in the Prime
Lease presently being used and occupied by the Sublessor.

         7. Sublessee shall be conclusively deemed to have agreed that Sublessor
has performed all of its obligations under this Work Letter unless not later
than the end of the second calendar month next beginning after the commencement
of the Term Sublessee shall give Sublessor written notice specifying the respect
in which Sublessor has not performed any such obligation.

         IN WITNESS WHEREOF, Sublessor and Sublessee have executed this exhibit
as of June 9, 1999.

         Sublessor:             AQUILA BIOPHARMACEUTICALS, INC.

                                By: /s/
                                   Its:  President and Chief Executive Officer

         Sublessee:             EPRISE CORPORATION

                                By: /s/ Milton A. Alpern
                                Chief Financial Officer

                                      -2-<PAGE>   1
                                                                       Ex - 10.4

                               EPRISE CORPORATION

                             1997 Stock Option Plan

                     As adopted August 20, 1997, and amended
                       November 1, 1997, August 13, 1998,
             May 12, 1999, September 15, 1999 and December 1, 1999

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
<S>                                                                                                              <C>
1.  Purpose; Restrictions........................................................................................  1
2.  Effective Date...............................................................................................  1
3.  Stock Covered by the Plan....................................................................................  1
4.  Administration...............................................................................................  2
5.  Eligible Recipients..........................................................................................  2
6.  Duration of the Plan.........................................................................................  3
7.  Terms and Conditions of Options..............................................................................  3
8.  Restrictions on Incentive Options............................................................................  6
9.  Suspension of Rights Prior to a Dissolution, Reorganization, Etc.............................................  6
10. Adjustment in Shares.........................................................................................  6
11. Investment Representations; Transfer Restrictions............................................................  6
12. Change in Control............................................................................................  7
13. Company's Right of First Refusal.............................................................................  9
14. No Exercise of Option if Employment Terminated for Misconduct................................................ 10
15. Company's Right of Repurchase................................................................................ 11
16. Lock-up Agreement............................................................................................ 12
17. Definitions.................................................................................................. 13
18. Termination or Amendment of Plan............................................................................. 13
</TABLE>

<PAGE>   3

                                         As adopted 8/20/97 and amended 11/1/97,
                                         08/13/98, 05/12/99, 9/15/99 and 12/1/99

                               EPRISE CORPORATION

                             1997 STOCK OPTION PLAN

     1.   Purpose; Restrictions. The purpose of this Eprise Corporation 1997
Stock Option Plan (the "Plan") is to advance the interests of Eprise
Corporation, a Delaware corporation (the "Company"), by strengthening the
ability of the Company to attract, retain and motivate key employees,
consultants and other individual contributors of or to the Company or any
present or future parent or subsidiary of the Company (the "Company Group") by
providing them with an opportunity to purchase stock of the Company and thereby
permitting them to share in the Company's success. It is intended that this
purpose will be effected by granting (i) incentive stock options ("Incentive
Options"), which are intended to qualify under the provisions of Section 422 of
the Code (as hereinafter defined), and (ii) non-statutory stock options
("Nonqualified Options"), which are not intended to meet the requirements of
Section 422 of the Code and which are intended to be taxed upon exercise under
Section 83 of the Code. (Both Incentive Options and Nonqualified Options shall
be collectively referred to as "Options".)

          Notwithstanding the foregoing, no Incentive Options shall be granted
under this Plan unless this Plan shall have been approved by the stockholders of
the Company within twelve (12) months before or after the Effective Date (as
hereinafter defined).

     2.   Effective Date. This Plan was adopted on August 20, 1997, which is
also the Effective Date of the Plan.

     3.   Stock Covered by the Plan. Subject to adjustment as provided in
Sections 9 and 10 below, the initial maximum number of shares that may be made
subject to Options under this Plan through the end of the Company's fiscal year
ending December 31, 1999 ("Shares") shall not exceed in the aggregate Seven
Million One Hundred Thirty-Four Thousand Six Hundred Fourteen (7,134,614) shares
of the common stock, $.001 par value, of the Company ("Common Stock"), subject
to the proviso in the following sentence. Any Shares subject to an Option which
for any reason expires or is terminated unexercised as to such Shares and any
Shares reacquired by the Company pursuant to forfeiture or a repurchase right
hereunder may again be the subject of an Option under the Plan; provided, that
Shares subject to an option under the Company's 1994 Stock Option Plan (the
"1994 Plan") which would have become available for subsequent option grants
under the 1994 Plan upon expiration, termination, forfeiture or repurchase in
the manner described in the first part of this sentence, shall instead become
available for grants under this Plan (thereby increasing the initial maximum
number of Shares that may be made subject to Options hereunder through the end
of the Company's fiscal year ending December 31, 1999 to a number greater than
7,134,614). In addition, effective January 1, 2000 and each January 1

<PAGE>   4

thereafter during the next two succeeding years, the number of Shares that may
be made subject to Options under this Plan shall be increased automatically to
an amount equal to 5% of the total number of issued and outstanding shares of
Common Stock (including shares held in treasury) as of the close of business on
December 31 of the preceding year. Notwithstanding the foregoing, the maximum
cumulative number of shares of Common Stock that may be made subject to
Incentive Options under this Plan shall be [ ]. The Shares purchased pursuant to
the exercise of Options under this Plan may, in whole or in part, be either
authorized but unissued Shares or issued Shares reacquired by the Company.

     4.   Administration. This Plan shall be administered by the Compensation
Committee of the Board of Directors (the "Committee") as follows:

     (a)  So long as the Company is not subject to the Exchange Act (as
hereinafter defined), the Committee shall consist of one or more persons
appointed by, and serving at the pleasure of, the Board of Directors.

     (b)  If the Company becomes subject to the Exchange Act, the Committee
thereafter shall consist of not less than three (3) members of the Board, who
shall be appointed by and shall serve at the pleasure of the Board; provided
that each of such members of the Committee shall be a person who in the opinion
of counsel to the Company is (i) a "non-employee director" as such term is used
in Rule 16b-3 promulgated under the Exchange Act and (ii) an "outside director"
as such term is used in regulation Section 1.162.27(e)(3) under Section 162(m)
of the Code.

     (c)  The Committee shall have the authority, subject to the express
provisions of the Plan, to construe the Plan and the respective Options and
related agreements, to prescribe, amend and rescind rules and regulations
relating to the Plan, to determine the terms and provisions of the respective
Options and related agreements, and to make all other determinations in the
judgment of the Committee necessary or desirable for the administration of the
Plan. The Committee may correct any defect or supply any omission or reconcile
any inconsistency in the Plan or in any Option or related agreement in the
manner and to the extent it shall deem expedient to carry the Plan into effect,
and it shall be the sole and final judge of such expediency. No member of the
Committee shall be liable for any action or determination made in good faith.

     5.   Eligible Recipients. Subject to the restrictions of Section 1 above,
Options may be granted to such key employees, consultants or other individual
contributors of or to the Company Group, including without limitation members of
the Board, as are selected by the Committee (a "Participant"); provided, that
only Employees (as defined below) of the Company Group shall be eligible for
grants of Incentive Options.

     6.   Duration of the Plan. This Plan shall terminate ten (10) years from
the Effective Date hereof, unless terminated earlier pursuant to Section 13
below, and no Options may be granted thereafter.

     7.   Terms and Conditions of Options. Options granted under this Plan shall
be evidenced by grant forms in such form and containing such terms and
conditions as the

                                       2
<PAGE>   5

Committee shall determine; provided, however, that such grant forms shall
evidence among their terms and conditions the following:

          (a)  Price. The purchase price per Share payable upon the exercise of
each Option granted hereunder shall be determined by the Committee at the time
the Option is granted. Subject to Section 7(j)(i), if applicable, the purchase
price per Share payable upon the exercise of each Incentive Option granted
hereunder shall not be less than one hundred percent (100%) of the fair market
value per Share of the Common Stock on the day the Incentive Option is granted.
Fair market value shall be determined in accordance with procedures to be
established in good faith by the Committee. The purchase price per Share payable
upon the exercise of each Nonqualified Option granted hereunder shall be
determined by the Board at the time of the grant. No Share shall be issued for
less than its par value, if any.

          (b)  Number of Shares. Each grant form shall specify the number of
Shares to which it pertains.

          (c)  Exercise of Options. Each Option shall be exercisable for the
full amount or for any part thereof and at such intervals or in such
installments as the Committee may determine at the time it grants such Option;
provided, however, that no Option shall be exercisable with respect to any
Shares later than ten (10) years after the date of the grant of such Option (or
five (5) years in the case of Incentive Options to which Section 7(j)(ii)
applies). An Option shall be exercisable only by delivery of a written notice to
the Company's President, or any other officer of the Company designated by the
Committee to accept such notices on its behalf, specifying the number of Shares
for which the Option is exercised and accompanied by either (i) payment or (ii)
if permitted by the Committee, irrevocable instructions to a broker to promptly
deliver to the Company full payment in accordance with Section 7(d)(ii) below of
the amount necessary to pay the aggregate exercise price. With respect to an
Incentive Option, the permission of the Committee referred to in clause (ii) of
the preceding sentence must be granted at the time the Incentive Option is
granted.

          (d)  Payment. Payment shall be made in full (i) at the time the Option
is exercised or (ii) promptly after the Participant forwards the irrevocable
instructions referred to in Section 7(c)(ii) above to the appropriate broker, if
exercise of an Option is made pursuant to Section 7(c)(ii) above. Payment shall
be made either (I) in cash, (II) by check, (III) if permitted by the Committee
(with respect to an Incentive Option, such permission to have been granted at
the time the Incentive Option is granted), by delivery and assignment to the
Company of shares of Company stock having a fair market value (as determined by
the Committee) equal to the exercise price, (IV) if permitted by the Committee,
as stated in the grant form evidencing the Option, and to the extent permitted
by any applicable law, by the Participant's recourse promissory note, which note
must be due and payable not more than five (5) years after the date the Option
is exercised, or (V) by a combination of one or more of the foregoing methods.
If shares of Company stock are to be used to pay the exercise price of an
Incentive Option, the Company prior to such payment must be furnished with
evidence satisfactory to it that the acquisition of such shares and their
transfer in payment of the exercise price satisfy the requirements of Section
422 of the Code and other applicable laws.

                                       3
<PAGE>   6

          (e)  Withholding Taxes; Delivery of Shares. The Company's obligation
to deliver Shares upon exercise of an Option shall be subject to the
Participant's satisfaction of all applicable federal, state and local income and
employment tax withholding obligations. Without limiting the generality of the
foregoing, the Company shall have the right to deduct from payments of any kind
otherwise due to the Participant any federal, state or local taxes of any kind
required by law to be withheld with respect to any Shares issued upon exercise
of Options. The Participant may elect to satisfy such obligation(s), in whole or
in part, by (i) delivering to the Company a check for the amount required to be
withheld or (ii) if the Committee in its sole discretion approves in any
specific or general case, having the Company withhold Shares or delivering to
the Company already owned shares of Common Stock having a value equal to the
amount required to be withheld, as determined by the Committee.

          (f)  Non-Transferability. No Option shall be transferable by the
Participant otherwise than by will or the laws of descent or distribution, and
each Option shall be exercisable during the Participant's lifetime only by the
Participant.

          (g)  Termination of Options. Except to the extent the Committee
provides specifically in a grant form or Option agreement for a lesser period
(or a greater period, in the case of Nonqualified Options only), each Option
shall terminate and may no longer be exercised if the Participant ceases for any
reason to render continuous Service (as hereinafter defined), in accordance with
the following provisions:

               (i) if the Participant ceases to render Service for any reason
          other than death or Disability (as hereinafter defined), the
          Participant may, at any time within a period of three (3) months after
          the date of such cessation of Service, exercise the Option to the
          extent that the Option was exercisable on the date of such cessation;

               (ii) if the Participant ceases to render Service because of
          Disability, the Participant may, at any time within a period of one
          (1) year after the date of such cessation of Service, exercise the
          Option to the extent that the Option was exercisable on the date of
          such cessation; and

               (iii) if the Participant ceases to render Service because of
          death, the Option, to the extent that the Participant was entitled to
          exercise it on the date of death, may be exercised within a period of
          one (1) year after the Participant's death by the person or persons to
          whom the Participant's rights under the Option pass by will or by the
          laws of descent or distribution;

provided, however, that no Option may be exercised to any extent by anyone after
the date of its expiration; and provided, further, that Options may be exercised
at any time only as to Shares which at such time are available for acquisition
pursuant to the terms of the applicable grant form or agreement.

                                       4
<PAGE>   7

          (h)  Rights as Stockholder. A Participant shall have no rights as a
stockholder with respect to any Shares covered by an Option until the date of
issuance of a stock certificate in the Participant's name for such Shares.

          (i)  Repurchase of Shares by the Company. Any Shares acquired upon
exercise of an Option may in the discretion of the Committee be subject to
repurchase by or forfeiture to the Company if and to the extent and at the
repurchase price, if any, specifically set forth in the option grant form or
agreement pursuant to which the Shares were acquired. Certificates representing
Shares subject to such repurchase or forfeiture may be subject to such escrow
and stock legending provisions as may be set forth in the option grant form or
agreement pursuant to which the Shares were acquired.

          (j)  10% Stockholder. If any Participant to whom an Incentive Option
is granted pursuant to the provisions of the Plan is on the date of grant the
owner of stock (as determined under Section 424(d) of the Code) possessing more
than 10% of the total combined voting power or value of all classes of stock of
the Company, its parent, if any, or subsidiaries, then the following special
provisions shall be applicable:

               (i) The exercise price per Share subject to such Option shall not
          be less than 110% of the fair market value of each Share on the date
          of grant; and

               (ii) The Option shall not have a term in excess of five (5) years
          from the date of grant.

          (k)  Confidentiality Agreements. Each Participant shall execute, prior
to or contemporaneously with the grant of any Option hereunder, the Company's
then standard form of agreement, if any, relating to nondisclosure of
confidential information, assignment of inventions and related matters.

          (l)  Aggregate Limitation. The maximum number of Shares with respect
to which any Options may be granted under the Plan to any individual during each
successive twelve-month period commencing on the Effective Date of the Plan
shall not exceed the total number of Shares reserved for the Plan pursuant to
Section 3 above.

          (m)  Right to Terminate. Nothing contained in the Plan or in any
Option granted hereunder shall restrict the right of any member of the Company
Group to terminate the employment of any Participant or other Service by the
Participant at any time and for any reason, with or without notice.

     8.   Restrictions on Incentive Options. Incentive Options granted under
this Plan shall be specifically designated as such and shall be subject to the
additional restriction that the aggregate fair market value, determined as of
the date the Incentive Option is granted, of the Shares with respect to which
Incentive Options are exercisable for the first time by a Participant during any
calendar year shall not exceed $100,000. If an Incentive Option which exceeds
the $100,000 limitation of this Section 8 is granted, the portion of such Option
which is exercisable

                                       5
<PAGE>   8

for Shares in excess of the $100,000 limitation shall be treated as a
Nonqualified Option pursuant to Section 422(d) of the Code. In the event that
such Participant is eligible to participate in any other stock incentive plans
of the Company, its parent, if any, or a subsidiary which are also intended to
comply with the provisions of Section 422 of the Code, such annual limitation
shall apply to the aggregate number of shares for which options may be granted
under all such plans.

     9.   Suspension of Rights Prior to a Dissolution, Reorganization, Etc.
Prior to any dissolution, liquidation, merger, consolidation or reorganization
of the Company as to which the Company will not be the surviving corporation, or
the sale or exchange of substantially all of the Common Stock or the sale of
substantially all of the assets of the Company (the "Event"), the Board or the
Committee may decide to terminate each outstanding Option. If the Board or the
Committee so decides, each Option shall terminate as of the effective date of
the Event, but the Board or the Committee shall suspend the exercise of all
outstanding Options a reasonable time prior to the Event, giving each person
affected thereby not less than fourteen days written notice of the date of
suspension, prior to which date such person may purchase in whole or in part the
Shares otherwise available to him as of the date of purchase. For purposes of
this section, the Shares available to any person as of the date of purchase
shall include all Shares issuable under any Accelerated Options of such person,
as defined in Section 12 hereof. If the Event is not consummated, the suspension
shall be removed and all Options shall continue in full force and effect,
subject to their terms.

     10.  Adjustment in Shares. Appropriate adjustment shall be made by the
Committee in the maximum number of Shares subject to the Plan and in the number,
kind, and exercise price of Shares covered by outstanding Options granted
hereunder to give effect to any stock dividends, stock splits, stock
combinations, recapitalizations and other similar changes in the capital
structure of the Company after the Effective Date of the Plan. In the event of a
change of the Common Stock resulting from a merger or similar reorganization as
to which the Company is the surviving corporation, the number and kind of Shares
which thereafter may be purchased pursuant to an Option under the Plan and the
number and kind of Shares then subject to Options granted hereunder and the
price per Share thereof shall be appropriately adjusted in such manner as the
Committee may deem equitable to prevent dilution or enlargement of the rights
available or granted hereunder.

     11.  Investment Representations; Transfer Restrictions. The Company may
require Participants, as a condition of purchasing Shares pursuant to the
exercise of an Option, to give written assurances in substance and form
satisfactory to the Company to the effect that such person is acquiring the
Shares for the Participant's own account for investment and not with any present
intention of selling or otherwise distributing the same, and to such other
effects as the Company deems necessary or appropriate (including without
limitation confirmation that the Participant is aware of any applicable
restrictions on transfer of the Shares, as specified in the by-laws of the
Company or otherwise) in order to comply with federal and applicable state
securities laws.

                                       6
<PAGE>   9

     12.  Change in Control

     Notwithstanding anything to the contrary in the Plan or in any Option grant
(but subject to the provisions of this Section 12), upon the occurrence of a
Change in Control (as defined below) of the Company, the right to purchase
shares under each option granted under the Plan that is then vested or that will
become vested on the next scheduled vesting date, as set forth in the applicable
Option grant, shall vest and become exercisable immediately on the date of
occurrence of a Change in Control (any such options, the "Accelerated Options").
Notwithstanding the foregoing, the Board of Directors may, by vote of a majority
of the entire Board (such majority to include the two directors appointed by the
Investors, as such term is defined in the Stock Purchase Agreement dated
December 18, 1997 by and among the Company, Prism Venture Partners I, L.P.,
Tredegar Investments, Inc., The Still River Fund and Gustin Partners, L.P., for
so long as such agreement remains in effect), provide for acceleration rights
upon a Change in Control in addition to those provided in this Section 12. For
the purpose of this Plan a "Change in Control" shall mean:

     (a)  The acquisition by any individual, entity or group (within the meaning
of Sections 13(d)(3) or 14(d)(2) of the Exchange Act) (a "Person") of beneficial
ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act)
of 35 percent or more of either (i) the then outstanding shares of Common Stock
or (ii) the combined voting power of the then outstanding voting securities of
the Company entitled to vote generally in the election of the directors (the
"Outstanding Company Voting Securities"); provided, however, that the following
acquisitions shall not constitute a Change in Control: (A) any acquisition
directly from the Company; (B) any acquisition by the Company or by any
corporation controlled by the Company; (C) any acquisition by any employee
benefit plan (or related trust) sponsored or maintained by the Company or any
corporation controlled by the Company; or (D) any acquisition by any corporation
pursuant to a consolidation or merger, if, following such consolidation or
merger, the conditions described in clauses (i), (ii) and (iii) of paragraph (c)
of this Section 12 are satisfied; or

     (b)  Individuals who, as of the Effective Date, constitute the Board (the
"Incumbent Board") ceasing for any reason to constitute at least two-thirds of
the Board over any period of 24 consecutive months or less; provided, however,
that any individual becoming a director subsequent to the Effective Date whose
election, or nomination for election by the Company's stockholders, was approved
by a vote or resolution of at least a majority of the directors then 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 by or on behalf of a Person other than the
Board; or

     (c)  Adoption by the Board of a resolution approving an agreement of
consolidation of the Company with or merger of the Company into another
corporation or business entity in each case unless, following such consolidation
or merger, (i) more than 60 percent of, respectively, the

                                       7
<PAGE>   10

then outstanding shares of common stock of the corporation resulting from such
consolidation or merger and/or the combined voting power of the then outstanding
voting securities of such corporation or business entity entitled to vote
generally in the election of directors (or other persons having the general
power to direct the affairs of such entity) is then beneficially owned, directly
or indirectly, by all or substantially all of the individuals and entities who
were the beneficial owners, respectively, of the Common Stock and Outstanding
Company Voting Securities immediately prior to such consolidation or merger in
substantially the same proportions as their ownership, immediately prior to such
consolidation or merger, of the Common Stock and/or Outstanding Company Voting
Securities, as the case may be, (ii) no Person (excluding the Company; any
employee benefit plan (or related trust) of the Company or such corporation or
other business entity resulting from such consolidation or merger; and any
Person beneficially owning, immediately prior to such consolidation or merger,
directly or indirectly, 35 percent or more of the Common Stock and/or
Outstanding Company Voting Securities, as the case may be) beneficially owns,
directly or indirectly, 35 percent or more of, respectively, the then
outstanding shares of common stock of the corporation resulting from such
consolidation or merger or the combined voting power of the then outstanding
voting securities of such corporation or business entity entitled to vote
generally in the election of its directors (or other persons having the general
power to direct the affairs of such entity) and (iii) at least two-thirds of the
members of the board of directors (or other group of persons having the general
power to direct the affairs of the corporation or other business entity)
resulting from such consolidation or merger were members of the Incumbent Board
at the time of the execution of the initial agreement providing for such
consolidation or merger; provided that any right which shall vest by reason of
the action of the Board pursuant to this paragraph (c) shall be divested, with
respect to any such right not already exercised, upon (A) the rejection of such
agreement of consolidation or merger by the stockholders of the Company or (B)
its abandonment by either party thereto in accordance with its terms; or

     (d)  Adoption by the requisite majority of the whole Board, or by the
holders of such majority of stock of the Company as is required by law or by the
Certificate of Incorporation or By-Laws of the Company as then in effect, of a
resolution or consent authorizing (i) the dissolution of the Company or (ii) the
sale or other disposition of all or substantially all of the assets of the
Company, other than to a corporation or other business entity with respect to
which, following such sale or other disposition, (A) more than 60 percent of,
respectively, the then outstanding shares of common stock of such corporation
and/or the combined voting power of the outstanding voting securities of such
corporation or other business entity entitled to vote generally in the election
of directors (or other persons having the general power to direct the affairs of
such entity) is then beneficially owned, directly or indirectly, by all or
substantially all of the individuals and entities who were the beneficial
owners, respectively, of the Common Stock and Outstanding Company Voting
Securities immediately prior to such sale or other disposition in substantially
the same proportions as their ownership, immediately prior to such sale or other
disposition, of the Common Stock and/or Outstanding Company Voting securities,
as the case may be, (B) no Person (excluding the Company; any employee benefit
plan (or related trust) of the Company or such corporation or other business
entity; and any Person beneficially owning, immediately prior to such sale or
other disposition, directly or indirectly, 35 percent or more of the Common
Stock and/or Outstanding Company Voting Securities, as the

                                       8
<PAGE>   11

case may be) beneficially owns, directly or indirectly, 35 percent or more of,
respectively, the then outstanding shares of common stock of such corporation
and/or the combined voting power of the then outstanding voting securities of
such corporation or other business entity entitled to vote generally in the
election of directors (or other persons having the general power to direct the
affairs of such entity) and (C) at least two-thirds of the members of the board
of directors (or other group of persons having the general power to direct the
affairs of such corporation or other entity) were members of the Incumbent Board
at the time of the execution of the initial agreement or action of the Board
providing for such sale or other disposition of assets of the Company; provided
that any right which shall vest by reason of the action of the Board or the
stockholders pursuant to this paragraph (d) shall be divested, with respect to
any such right not already exercised, upon the abandonment by the Company of
such dissolution, or such sale or other disposition of assets, as the case may
be.

     A Change in Control shall not occur upon the mere reincorporation of the
Company in another state.

     13.  Company's Right of First Refusal.

          (a)  Exercise of Right. If the Employee desires to sell all or any
part of the shares acquired under an Option (including any securities received
in respect thereof pursuant to any stock dividend, stock split,
reclassification, reorganization, recapitalization and the like), and an offeror
(the "Offeror") has made an offer therefor, which offer the Employee desires to
accept, the Employee shall: (i) obtain in writing an irrevocable and
unconditional bona fide offer (the "Bona Fide Offer") for the purchase thereof
from the Offeror; and (ii) give written notice (the "Option Notice") to the
Company setting forth his or her desire to sell such shares, which Option Notice
shall be accompanied by a photocopy of the original executed Bona Fide Offer and
shall set forth at least the name and address of the Offeror and the price and
terms of the Bona Fide Offer. Upon receipt of the Option Notice, the Company
shall have an assignable option to purchase any or all of such shares (the
"Option Shares") specified in the Option Notice, such option to be exercisable
by giving, within 30 days after receipt of the Option Notice, a written
counter-notice to the Employee. If the Company elects to purchase any or all of
such Option Shares, it shall be obligated to purchase, and the Employee shall be
obligated to sell to the Company, such Option Shares at the price and terms
indicated in the Bona Fide Offer within 60 days from the date of receipt by the
Company of the Option Notice.

          (b)  Sale of Option Shares to Offeror. The Employee may sell, pursuant
to the terms of the Bona Fide Offer, any or all of such Option Shares not
purchased or agreed to be purchased by the Company for 60 days after the
expiration of the 30-day period during which the Company may give the aforesaid
counter-notice; provided, however, that the Employee shall not sell such Option
Shares to the Offeror if the Offeror is a competitor of the Company and the
Company gives written notice to the Employee, within 30 days of its receipt of
the Option Notice, stating that the Employee shall not sell his Option Shares to
the Offeror; and provided, further, that prior to the sale of such Option Shares
to the Offeror, the Offeror shall execute an agreement with the Company pursuant
to which the Offeror agrees to be subject to the restrictions set forth in this
Section 13. If any or all of such Option Shares are not sold pursuant

                                       9
<PAGE>   12

to a Bona Fide Offer within the time permitted above, the unsold Option Shares
shall remain subject to the terms of this Section 13.

          (c)  Adjustments for Changes in Capital Structure. If there shall be
any change in the Common Stock of the Company through merger, consolidation,
reorganization, recapitalization, stock dividend, split-up, combination or
exchange of shares, or the like, the restrictions contained in this Section 13
shall apply with equal force to additional and/or substitute securities, if any,
received by the Employee in exchange for, or by virtue of his or her ownership
of, Option Shares.

          (d)  Failure to Deliver Option Shares. In the event the Employee fails
or refuses to deliver on a timely basis duly endorsed certificates representing
Option Shares to be sold to the Company pursuant to this Section 13 the Company
shall have the right to deposit the purchase price for the Option Shares in a
special account with any bank or trust company in the Commonwealth of
Massachusetts, giving notice of such deposit to the Employee, whereupon such
Option Shares shall be deemed to have been purchased by the Company. All such
monies shall be held by the bank or trust company for the benefit of the
Employee. All monies deposited with the bank or trust company but remaining
unclaimed for two (2) years after the date of deposit shall be repaid by the
bank or trust company to the Company on demand, and the Employee shall
thereafter look only to the Company for payment. The Company may place a legend
on any stock certificate delivered to the Employee reflecting the restrictions
on transfer provided in this Section 13.

          (e)  Expiration of Company's Right of First Refusal. The refusal
rights of the Company forth above shall remain in effect until the earlier of
(i) the date which is ten years from the date of grant of this option or (ii)
such time, if ever, as a distribution to the public is made of shares of the
Company's Common Stock for an aggregate public offering price of at least
$5,000,000 or more pursuant to a registration statement filed under the
Securities Act of 1933, as amended, or a successor statute, at which time the
refusal rights of the Company set forth herein will automatically expire.

     14.  No Exercise of Option if Employment Terminated for Misconduct. If the
employment of the Employee is terminated for "Misconduct", an Option shall
terminate on the date of such termination of employment with respect to any
shares which have become exercisable during the period commencing on the date
which is six months prior to the date upon which such Misconduct is determined
by the Board of Directors to have commenced or occurred and shall thereupon not
be exercisable to the extent of such termination. "Misconduct" is conduct, as
determined by the Board of Directors, involving one or more of the following:
(i) the substantial and continuing failure of the Employee to render services to
the Company in accordance with his assigned duties; (ii) a determination by
two-thirds of the members of the Board of Directors that the Employee has
inadequately performed the duties of his employment; (iii) disloyalty, gross
negligence, dishonesty or breach of fiduciary duty to the Company; (iv) the
commission of an act of embezzlement, fraud, disloyalty, dishonesty or
deliberate disregard of the rules or policies of the Company which results in
loss, damage or injury to the Company, whether directly or indirectly; (v) the
unauthorized disclosure of any trade secret or confidential

                                       10
<PAGE>   13

information of the Company; or (vi) the commission of an act which constitutes
unfair competition with the Company or which induces any customer of the Company
to withdraw from or not enter into a contract with the Company. In making such
determination, the Board of Directors shall act fairly and in utmost good faith
and shall give the Employee an opportunity to appear and to be heard at a
hearing before the Board of Directors or any Committee and present evidence on
his or her behalf. For the purposes of this Section 14, termination of
employment shall be deemed to occur when the Employee receives notice that his
or her employment is terminated.

     15.  Company's Right of Repurchase.

          (a)  Rights of Repurchase. If any of the events specified in Section
15(b) below occur, then:

               (i)  with respect to shares acquired upon exercise of an Option
          prior to the occurrence of such event, within 60 days after the
          Company receives actual knowledge of the event, and

               (ii) with respect to shares acquired upon exercise of an Option
          after the occurrence of such event, within 60 days following the later
          of the date of such exercise or the date the Company receives actual
          knowledge of such event,

(in either case, the "Repurchase Period"), the Company shall have the right, but
not the obligation, to repurchase all, but not a portion of, the shares from the
Employee, or his or her legal representatives, as the case may be (the
"Repurchase Right"). The Repurchase Right shall be exercised by the Company by
giving the Employee, or his or her legal representative, written notice of its
intention to exercise the Repurchase Right on or before the last day of the
Repurchase Period, and, together with such notice, tendering to the Employee, or
his or her legal representative, an amount equal to the higher of the Option
price or the fair market value of the shares. The Company may, in exercising the
Repurchase Right, designate one or more nominees to purchase the shares either
within or without the Company. Upon timely exercise of the Repurchase Right in
the manner provided in this Section 15(a), Employee, or his or her legal
representative, shall deliver to the Company the stock certificate or
certificates representing the shares being repurchased, duly endorsed and free
and clear of any and all liens, charges and encumbrances.

     If shares are not purchased under the Repurchase Right, the Employee and
his or her successor in interest, if any, will hold any such shares in his or
her possession subject to all of the provisions of this Plan.

          (b)  Company's Right to Exercise Repurchase Right. The Company shall
have the Repurchase Right in the event that any of the following events shall
occur:

               (i)  The termination of the Employee's employment with the
Company or any other member of the Company Group, voluntarily or involuntarily,
for any

                                       11
<PAGE>   14

reason whatsoever, including death or permanent disability, prior to the time
the Option shall be fully vested as provided in the applicable Option grant;

               (ii)  The receivership or bankruptcy of the Employee, any other
creditor's proceeding affecting the Employee's ownership of any shares acquired
upon exercise of this option or the taking of any of Employee's shares acquired
upon exercise of this option by legal process, such as a levy of execution;

               (iii) Distribution of shares held by the Employee to his or her
spouse as such spouse's joint or community interest pursuant to a decree of
dissolution, operation of law, divorce, property settlement agreement or for any
other reason, except as may be otherwise permitted by the Company; or

               (iv)  The termination of the Employee's employment by the Company
for Misconduct (as defined in Section 14 hereof).

          (c)  Determination of Fair Market Value. The fair market value of the
shares subject to the Repurchase Right shall be, for purposes of this Section
15, an amount per share determined on the basis of the price at which shares of
the Common Stock could reasonably be expected to be sold in an arms-length
transaction, for cash, other than on an installment basis, to a person not
employed by, controlled by, in control of or under common control with the
Company. Fair market value shall be determined by the Board of Directors, giving
due consideration to recent grants of incentive stock options for shares of
Common Stock, recent transactions involving shares of the Common Stock, if any,
earnings of the Company to the date of such determination, projected earnings of
the Company, the effect of the transfer restrictions to which the shares are
subject under law and this Agreement, the absence of a public market for the
Common Stock and such other matters as the Board of Directors deems pertinent.
The determination by the Board of Directors of the fair market value shall be
conclusive and binding. The fair market value of the shares shall be determined
as of the day on which the event occurs.

     16.  Lock-up Agreement. The Employee agrees that the Employee will not, for
such period following the effective date of the Company's initial distribution
of securities in an underwritten public offering to the general public pursuant
to a registration statement filed with the Securities and Exchange Commission as
the managing underwriter of such offering shall reasonably request, but in any
event not to exceed 120 days, directly or indirectly, sell, offer to sell or
otherwise dispose of the Company's securities other than any securities which
are included in such initial public offering.

     17.  Definitions.

          (a)  "Board" means the Board of Directors of the Company.

          (b)  "Code" means the Internal Revenue Code of 1986, as heretofore and
               hereafter amended, and the regulations promulgated thereunder.

                                       12
<PAGE>   15

          (c)  "Exchange Act" means the Securities Exchange Act of 1934, as
               heretofore and hereafter amended.

          (d)  "Service" means the performance of work for one or more members
               of the Company Group as an employee, director, consultant or
               other individual contributor.

          (e)  "Subsidiary" has the meaning set forth in Section 424(f) of the
               Code.

     18.  Termination or Amendment of Plan. The Board may by written action at
any time terminate the Plan or make such changes in or additions to the Plan as
it deems advisable without further action on the part of the stockholders of the
Company, provided:

          (a) that no such termination or amendment shall adversely affect or
impair any then outstanding Option or related agreement without the consent of
the Participant holding such Option or related agreement; and

          (b) that if the Plan itself shall have been approved by the
stockholders of the Company, no such amendment which (i) increases the maximum
number of Shares subject to this Plan (except to the extent provided in Section
3), (ii) materially increases the benefits accruing to Participants, or (iii)
materially modifies the requirements as to eligibility for participation in the
Plan may be made without obtaining, or being conditioned upon, stockholder
approval.

        With the consent of the Participant affected, the Committee may amend
outstanding Options or related agreements in a manner not inconsistent with the
Plan. The Committee shall have the right to amend or modify the terms and
provisions of the Plan and of any outstanding Incentive Options granted under
the Plan to the extent necessary to qualify any or all such Options for such
favorable federal income tax treatment (including deferral of taxation upon
exercise) as may be afforded incentive stock options under Section 422 of the
Code.

                                       13

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