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                                                                   EXHIBIT 10.13

                                 FIRST AMENDMENT

                                       TO

                              EMPLOYMENT AGREEMENT

         THIS FIRST AMENDMENT (the "First Amendment") to the EMPLOYMENT
AGREEMENT (the "Agreement"), is made in New York, New York as of the 20th day of
February, 2001, between Atlantic Technology Ventures, Inc., a Delaware
corporation having its executive offices and principal place of business at 350
Fifth Avenue, Suite 5507, New York, New York (the "Company"), and Dr. A. Joseph
Rudick, an individual currently residing at 901 Lexington Avenue, New York, New
York ("Executive").

         WHEREAS, the Parties hereto entered into the Agreement dated April 10,
2000;

         WHEREAS, the Parties hereto desire to amend certain aspects of the
Agreement;

         NOW, THEREFORE, IN CONSIDERATION of the mutual covenants and agreements
hereinafter set forth, the Company and Executive agree as follows:

         1.       As of the date hereof, Section 1 shall be amended to read in
its entirety as follows:

         The term of this Agreement shall be the three-year period commencing on
April 3, 2001 and ending on April 2, 2004 (the "Term").

         2.       As of the date hereof, Section 2(b) shall be amended to read
in its entirety as follows:

         Performance of Duties. Throughout the Term, Executive shall faithfully
and diligently perform Executive's duties in conformity with the directions of
the Board of Directors and serve the Company to the best of Executive's ability.
Until otherwise determined by the Board of Directors, Executive shall have the
title of Chief Science Officer of the Company, and in such capacity shall report
to the President and Chief Executive Officer and the Board of Directors of the
Company.

         3.       As of the date hereof, Section 3(a) shall be amended to read
in its entirety as follows:

         Base Salary. The Company agrees to pay to Executive a base salary
("Base Salary") at the annual rate of $75,000, payable in equal installments
consistent with the Company's payroll practices.

         4.       As of the date hereof, Section 3(c) shall be amended to read
in its entirety as follows:

         Bonus, The Company shall pay to Executive an annual bonus (the "Bonus")
in an amount to be determined by Compensation Committee of the Board of
Directors in its discretion but in no event less than $15,000. In addition,
Executive shall be entitled to participate in any bonus or other incentive
programs as may be established by the Company.

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         IN WITNESS WHEREOF, the Company has caused this First Amendment to be
duly executed on its behalf by an officer thereunto duly authorized and
Executive has duly executed this Agreement, all as of the date and year first
written above.

                                           ATLANTIC TECHNOLOGY VENTURES, INC.

                                           By: /s/ Frederic P. Zotos
                                               --------------------------------
                                               Frederic P. Zotos
                                               President

                                           /s/ A. Joseph Rudick
                                           ------------------------------------
                                           Dr. A. Joseph Rudick

                                       2<PAGE>

                                                                   EXHIBIT 10.14

                                SECOND AMENDMENT

                                       TO

                              EMPLOYMENT AGREEMENT

         THIS SECOND AMENDMENT (the "Second Amendment") to the EMPLOYMENT
AGREEMENT (the "Agreement"), is made in New York, New York as of the 1st day of
April, 2002, between Atlantic Technology Ventures, Inc., a Delaware corporation
having its executive offices and principal place of business at 350 Fifth
Avenue, Suite 5507, New York, New York (the "Company"), and Frederic P. Zotos,
an individual currently residing at 534 Third Avenue, Apartment No. 3, New York,
New York (the "Executive").

         WHEREAS, the Parties hereto entered into the Agreement dated April 3,
2000;

         WHEREAS, the Parties hereto entered into a First Amendment to the
Agreement dated February 20, 2001;

         WHEREAS, the Parties hereto desire to amend certain aspects of the
Agreement;

         NOW, THEREFORE, IN CONSIDERATION of the mutual covenants and agreements
hereinafter set forth, the Company and Executive agree as follows:

         1.       As of the date hereof, Section 3(a) shall be amended to read
in its entirety as follows:

         Base Salary. The Company agrees to pay to Executive a base salary
("Base Salary") at the annual rate of $225,000, payable in equal installments
consistent with the Company's payroll practices. Notwithstanding the forgoing,
the Executive agrees to defer and accrue a portion of the Base Salary at the
annual rate of $50,000, deferrable and accruable in equal installments
consistent with the Company's payroll practices. The salary deferral and accrual
shall end and Company will pay the Executive in full the deferred and accrued
salary amount hereunder upon the earlier of either the Company's own
determination, the Executive's termination of employment by the Company as
provided in Section 4(d) of this Agreement, or the expiration of the Term of
this Agreement.

         2.       As of the date hereof, Section 3(c) shall be amended to read
in its entirety as follows:

         Bonus, The Company shall pay to Executive an annual bonus (the "Bonus")
in an amount to be determined by Compensation Committee of the Board of
Directors in its discretion but in no event less than $50,000. In addition,
Executive shall be entitled to participate in any bonus or other incentive
programs as may be established by the Company. Notwithstanding the forgoing, the
Company will pay the Executive in full any accrued bonus amount hereunder upon
the earlier of either the Executive's termination of employment by the Company
as provided in Section 4(d) of this Agreement, or the expiration of the Term of
this Agreement.

         3.       As of the date hereof, Section 4(d) shall be amended to read
in its entirety as follows:

         Termination By Company For Any Other Reason. In the event that
Executive's employment hereunder is terminated by the Company during the Term
for any reason other than as provided in Section 4(b) or 4(c) of this Agreement,
then the Company shall pay to Executive the Base Salary through such

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date of termination and, in lieu of any further compensation and benefits for
the balance of the Term, severance pay equal to the Base Salary that Executive
should have otherwise received during the period beginning on such date of
termination and ending six (6) months from the effective date of such
termination, which severance pay shall be paid commencing with such date of
termination at the times and in the amounts such Base Salary would have been
paid. Notwithstanding the forgoing, the Company shall also pay the Executive in
full any deferred and accrued salary owed under Section 3(a) of this Agreement,
and any accrued bonus under Section 3(c) of this Agreement. Notwithstanding
anything to the contrary contained herein, in the event that Executive shall
breach Section 5 or 6 of this Agreement, in addition to any other remedies the
Company may have in the event Executive breaches this Agreement, the Company's
obligation pursuant to this Section 4(d) to continue such salary shall cease and
Executive's rights thereto shall terminate and shall be forfeited.

         IN WITNESS WHEREOF, the Company has caused this Second Amendment to be
duly executed on its behalf by an officer thereunto duly authorized and
Executive has duly executed this Agreement, all as of the date and year first
written above.

                                           ATLANTIC TECHNOLOGY VENTURES, INC.

                                           By: /s/ Nicholas J. Rossettos
                                               --------------------------------
                                               Nicholas J. Rossettos
                                               Chief Financial Officer

                                           /s/ Frederic P. Zotos
                                           ------------------------------------
                                           Frederic P. Zotos

                                       2<PAGE>

                                                                   EXHIBIT 10.15

                                SECOND AMENDMENT

                                       TO

                              EMPLOYMENT AGREEMENT

         THIS SECOND AMENDMENT (the "Second Amendment") to the EMPLOYMENT
AGREEMENT (the "Agreement"), is made in New York, New York as of the 1st day of
April, 2002, between Atlantic Technology Ventures, Inc., a Delaware corporation
having its executive offices and principal place of business at 350 Fifth
Avenue, Suite 5507, New York, New York (the "Company"), and Dr. A. Joseph
Rudick, an individual currently residing at 901 Lexington Avenue, New York, New
York ("Executive").

         WHEREAS, the Parties hereto entered into the Agreement dated April 10,
2000;

         WHEREAS, the Parties hereto entered into a First Amendment to the
Agreement dated February 20, 2001;

         WHEREAS, the Parties hereto desire to amend certain aspects of the
Agreement;

         NOW, THEREFORE, IN CONSIDERATION of the mutual covenants and agreements
hereinafter set forth, the Company and Executive agree as follows:

         1.       As of the date hereof, Section 3(a) shall be amended to read
in its entirety as follows:

         Base Salary. The Company agrees to pay to Executive a base salary
("Base Salary") at the annual rate of $75,000, payable in equal installments
consistent with the Company's payroll practices. Notwithstanding the forgoing,
the Executive agrees to defer and accrue a portion of the Base Salary at the
annual rate of $25,000, deferrable and accruable in equal installments
consistent with the Company's payroll practices. The salary deferral and accrual
shall end and Company will pay the Executive in full the deferred and accrued
salary amount hereunder upon the earlier of either the Company's own
determination, the Executive's termination of employment by the Company as
provided in Section 4(d) of this Agreement, or the expiration of the Term of
this Agreement.

         2.       As of the date hereof, Section 3(c) shall be amended to read
in its entirety as follows:

         Bonus, The Company shall pay to Executive an annual bonus (the "Bonus")
in an amount to be determined by Compensation Committee of the Board of
Directors in its discretion but in no event less than $15,000. In addition,
Executive shall be entitled to participate in any bonus or other incentive
programs as may be established by the Company. Notwithstanding the forgoing, the
Company will pay the Executive in full any accrued bonus amount hereunder upon
the earlier of either the Executive's termination of employment by the Company
as provided in Section 4(d) of this Agreement, or the expiration of the Term of
this Agreement.

         3.       As of the date hereof, Section 4(d) shall be amended to read
in its entirety as follows:

         Termination By Company For Any Other Reason. In the event that
Executive's employment hereunder is terminated by the Company during the Term
for any reason other than as provided in Section 4(b) or 4(c) of this Agreement,
then the Company shall pay to Executive the Base Salary through such

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date of termination and, in lieu of any further compensation and benefits for
the balance of the Term, severance pay equal to the Base Salary that Executive
should have otherwise received during the period beginning on such date of
termination and ending six (6) months from the effective date of such
termination, which severance pay shall be paid commencing with such date of
termination at the times and in the amounts such Base Salary would have been
paid. Notwithstanding the forgoing, the Company shall also pay the Executive in
full any deferred and accrued salary owed under Section 3(a) of this Agreement,
and any accrued bonus under Section 3(c) of this Agreement. Notwithstanding
anything to the contrary contained herein, in the event that Executive shall
breach Section 5 or 6 of this Agreement, in addition to any other remedies the
Company may have in the event Executive breaches this Agreement, the Company's
obligation pursuant to this Section 4(d) to continue such salary shall cease and
Executive's rights thereto shall terminate and shall be forfeited.

         IN WITNESS WHEREOF, the Company has caused this Second Amendment to be
duly executed on its behalf by an officer thereunto duly authorized and
Executive has duly executed this Agreement, all as of the date and year first
written above.

                                           ATLANTIC TECHNOLOGY VENTURES, INC.

                                           By: /s/ Frederic P. Zotos
                                               --------------------------------
                                               Frederic P. Zotos
                                               President

                                           /s/ A. Joseph Rudick
                                           ------------------------------------
                                           Dr. A. Joseph Rudick

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