Document:

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                                                                   EXHIBIT 10.27

March 17, 2000

Amerigon Incorporated
5462 Irwindale Avenue
Irwindale, California  91706-2048

          Re:  Series A Preferred Stock
               ------------------------

Dear Gentlemen:

     In June 1999, each of the undersigned purchased and each of the undersigned
currently owns, that number of shares of Amerigon Incorporated (the "Company")
Series A Preferred Stock indicated below next to their signature block.

     Section 2(c)(i) of the Company's Certificate of Determination of Rights,
Preferences and Privileges of the Series A Preferred Stock (the "Certificate of
Designation") specifies that a liquidation, dissolution or winding up of the
Company shall be deemed to be occasioned by the events specified in Section
2(c)(i)(A) and 2(c)(i)(B) of the Certificate of Designation.  Each of the
undersigned has advised the Company that it does not, absent a distribution of
assets to shareholders, consider Section 2(c)(i) to give the undersigned the
right to cause the Company to make any payment to the undersigned or to permit
the undersigned to cause the Company to redeem its Shares of Series A Preferred
Stock.

     Notwithstanding the foregoing, each of the undersigned hereby (i)
permanently and irrevocably waives any right it may have under Section 2(c) of
the Certificate of Designation as a holder of the Series A Preferred Stock, (ii)
agrees that it shall vote in favor a proposal to be presented to the
shareholders of the Company to delete Section 2(c) in its entirety from the
Certificate of Designation and (iii) agrees that it will, as a condition to any
transfer made by it of any shares of Series A Preferred, obtain an undertaking
from the transferee that it will comply with the provisions of this paragraph.
The obligation to obtain this undertaking shall apply to each additional
subsequent transferee (and each of their transferees).
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Amerigon, March 17, 2000 - Page 2

     The undersigned view this undertaking to be effective as of the date of our
initial purchase of the shares of Series A Preferred Stock as it is consistent
with our understanding as of that date.
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Amerigon, March 17, 2000 - Page 3

                                 Sincerely,

                                 Shares of Series A Preferred Stock (4,500)

                                 Westar Capital II, LLC

                                 By:  Westar Capital Associates II, LLC

                                      By:  _________________________

                                 Shares of Series A Preferred Stock (4,500)

                                 Big Beaver Investments, LLC

                                      By:  __________________________Francis Lienhard                                              ROYAL BANK
Senior Account Manager                                        [ICON](REGISTERED)

                                                      Royal Bank of Canada
                                                      Corporate Banking - Quebec
                                                      8th Floor, West Wing
                                                      1 Place Ville Marie
                                                      Montreal, Quebec  H3C3A9

                                                      Tel:  (514) 874-2811
December 14, 1999                                     Fax:  (514) 874-5315

Mr. Lawrence J. Hineline
Vice President - Finance
NORTH AMERICAN VACCINE INC.
10150 Old Columbia Road
Columbia, MD 21046-2358

Subject:  US$6,000,000 Credit Facilities - July 12, 1999.
---------------------------------------------------------

Dear Larry:

Pursuant to your request, we hereby confirm that we agree to extend the above
Credit Facilities up to May 31, 2000 subject the following amendments:

     o  For clarity, the loan financing of US$30,000,000 received from Baxter
        International Inc. shall not be included in the definition of Mandatory
        Repayment.

     o  Extension Fee of US$12,500 payable upon acceptance of this extension.

All other terms and conditions of the Credit Facilities remain applicable.

Please confirm acceptance of this extension of the Credit Facilities by signing
and returning copy of this letter.

Yours truly,

/s/ F. Lienhard
FL/ed

Read and accepted on this 20 day of December 1999.

NORTH AMERICAN VACCINE INC.

By:         /s/ Lawrence J. Hineline         By:       /s/ Randal Chase
            --------------------------                 ---------------------
Name:       Lawrence J. Hineline             Name:     Randal Chase
            --------------------------                 ---------------------
Title:      Vice President, Finance          Title:    President & CEO
            --------------------------                 ---------------------

Acknowledged on this 22nd day of December 1999.

BIOCHEM PHARMA INC.

By:         /s/ F. Andrew                    By:       /s/ C. Tessier
            --------------------------                 ---------------------
Name:       F. Andrew                        Name:     C. Tessier
            --------------------------                 ---------------------
Title:      Chief Financial Officer          Title:    Vice President, Legal
            --------------------------                 ---------------------

BIOCHEM PHARMA HOLDINGS INC.

By:         /s/ F. Andrew                    By:       /s/ Guy Lord
            --------------------------                 ---------------------
Name:       F. Andrew                        Name:     Guy Lord
            --------------------------                 ---------------------
Title:      Treasurer                        Title:    Secretary
            --------------------------                 ---------------------2000 EMPLOYEE STOCK PURCHASE PLAN

                                  EXHIBIT 4.3

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                          WILMINGTON TRUST CORPORATION

                        2000 EMPLOYEE STOCK PURCHASE PLAN

            1. PURPOSE. The purpose of Wilmington Trust Corporation's 2000
Employee Stock Purchase Plan (the "Plan") is to provide all regular employees of
Wilmington Trust Corporation ("WTC") and those of its subsidiaries that may be
designated as participating companies by WTC's Board of Directors from time to
time an opportunity to purchase shares of WTC's common stock, par value $1 per
share ("Common Stock"), through annual offerings to be made from time to time
for the duration of the Plan; and to foster interest in WTC's success, growth,
and development. WTC intends that the Plan qualify as an "Employee Stock
Purchase Plan" within the meaning of Section 423 of the Internal Revenue Code of
1986, as amended (the "Code"). Accordingly, the Plan's provisions shall be
construed to extend and limit participation in a manner consistent with the
requirements of that section of the Code.

            2. ELIGIBILITY.

                  a. Any Employee shall be eligible to participate in the Plan
as of June 1 coincident with or next following the completion of at least one
month of continuous service with one or more Employers, subject to the
limitations imposed by Section 423(b) of the Code.

                  b. Any provision of the Plan to the contrary notwithstanding,
no Employee shall be granted an option:

                       (1) If, immediately after that grant, the Employee would
                           own shares, and/or hold outstanding options to
                           purchase shares, possessing 5% or more of the total
                           combined voting power or value of all classes of
                           stock of WTC or of any subsidiary of WTC; or

                       (2) That permits an Employee rights to purchase shares
                           under all employee stock purchase plans of WTC and
                           its subsidiaries to accrue at a rate that exceeds
                           $25,000 of the fair market value of the shares
                           (determined at the time that option is granted) for
                           each calendar year in which those stock options are
                           outstanding at any time.

            3. OFFERINGS. WTC will make one or more annual offerings to
Employees to purchase stock hereunder. The terms and conditions of each such
offering shall specify the number of shares that may be purchased thereunder.

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The fixed term of any offering shall include a Purchase Period of specified
duration, during which (or during that period thereof during which an Employee
may elect to participate) the amounts received by an Employee as Base Salary
shall constitute the measure of that Employee's participation in the offering.

            4. PARTICIPATION. An Employee who is, on the effective date of any
offering, eligible to participate in that offering, may so participate by
completing and forwarding a "Payroll Deduction Authorization for Purchase of
Wilmington Trust Corporation Stock" form to the designated payroll location.
Payroll deductions for a Participant shall commence on the date when the
authorization for a payroll deduction becomes effective and end on the
termination date of the offering to which that authorization applies, unless
terminated sooner by the Participant in accordance with Paragraph 8 below.

            5. PAYROLL DEDUCTIONS. A Participant's payroll deduction
authorization shall authorize deductions each payday during a Purchase Period at
a rate not to exceed 10% of the Participant's Base Salary at the beginning of
that Purchase Period but, at a minimum, at a rate that will accumulate an amount
equal to the offering price of at least five shares by the end of the Purchase
Period.

                  a. All payroll deductions made for a Participant shall be
credited to a bookkeeping account under the Plan. A Participant may not make
separate cash payments into that account.

                  b. A Participant may at any time prospectively decrease the
amount authorized to be deducted per period, provided the minimum deduction
required above is maintained. That change may not become effective sooner than
the next pay period ending after receipt of the form by the appropriate payroll
location. Notwithstanding anything to the contrary contained herein, a
Participant may reduce payroll deductions hereunder only once during any
Purchase Period.

                  c. A Participant may discontinue participation in the Plan in
accordance with Paragraph 8 below.

            6.    GRANTING OF AN OPTION.

                  a. In any offering hereunder, each Participant shall be
granted an option, on the Date of Offering, for as many full shares of Common
Stock as he or she elects to purchase with the payroll deductions credited to
the Participant's account during the Purchase Period, based on the option price
for the Purchase Period, as described in Subparagraph 6 (b) below.

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                  b. The option price per share of shares purchased with payroll
deductions made for a Participant during any Purchase Period shall be the lower
of:

                       (1) Eighty-five percent of the last sale price of the
                           Common Stock on the first day of the Purchase Period
                           or, if there was no such reported sale of Common
                           Stock on that date, on the next preceding date on
                           which there was such a reported sale; or

                       (2) Eighty-five percent of the last sale price of the
                           Common Stock on the last day of the Purchase Period
                           or, it there was no such reported sale of Common
                           Stock on that date, on the next preceding date on
                           which there was such a reported sale.

            7.    EXERCISE OF OPTION.

                  a. As of the last day of the Purchase Period for any offering,
the account of each Participant shall be totaled and the option price
determined. If a Participant has sufficient funds (including interest credited
on his or her account at the rate computed in accordance with Paragraph 9 below)
to purchase five or more full shares at the option price, that Participant shall
be deemed to have exercised the option to purchase the number of shares for
which he or she has subscribed at that price, and his or her account shall be
charged for the number of shares so purchased.

                  b. Participation in an offering will not bar an Employee from
participating in any subsequent offering hereunder. Payroll deductions may be
made under each offering to the extent the Employee authorizes, subject to the
maximum and minimum limitations for that offering imposed hereby. A separate
account shall be maintained for each Participant with respect to each offering.
Any unused balance in a Participant's account at the end of a Purchase Period
shall be refunded, with interest computed in accordance with Paragraph 9 below.

                  c. If a Participant does not accumulate sufficient funds in
his or her account to purchase at least five shares during a Purchase Period,
the Participant thereupon shall be deemed to have withdrawn from that offering,

                  d. The shares of Common Stock purchased by a Participant upon
the exercise of his or her option in accordance herewith shall not include
fractional shares. Amounts credited to a Participant's account which would have
been used to purchase fractional shares shall be refunded to the Participant,
with interest computed in accordance with Paragraph 9 below.

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            8.    WITHDRAWAL.

                  a. A Participant may withdraw all payroll deductions credited
to an account hereunder at any time before the end of a Purchase Period by
giving the Corporation written notice. All payroll deductions credited to that
account shall be paid to the Participant, with interest computed in accordance
with Paragraph 9 below, promptly after receipt of notice of withdrawal, and no
further payroll deductions shall be made for that Participant in respect of that
offering.

                  b. Except as provided in the following sentence, an Employee's
withdrawal from the Plan shall not have any effect upon his or her eligibility
to participate in any succeeding offering hereunder; provided that Section 16
Officers who make withdrawals or otherwise cease participation in the Plan
during any Purchase Period shall be precluded from re-participation in the Plan
until the next Purchase Period that begins at least six months after that
withdrawal or cessation of participation.

                  c. If an Employee retires or otherwise terminates employment,
no payroll deduction shall be made from any pay due and owing at that time, and
the balance in the Employee's account shall be paid to the Employee, with
interest computed in accordance with Paragraph 9 below or, at the Employee's
election, used to purchase Common Stock in accordance with Paragraph 7 above.

                  d. If an Employee dies, that Employee's beneficiary may elect
to withdraw the balance in his or her account, with interest computed in
accordance with Paragraph 9 below, or apply it to the purchase of the
appropriate number of full shares of common Stock at a price determined in
accordance with Paragraph 6 above, using the date of death as though it were the
last day of the Purchase Period. Any balance in that account remaining after
that purchase shall be paid, with interest computed in accordance with Paragraph
9 below, to the person or persons entitled thereto in accordance with Paragraph
12 below.

            9.    INTEREST. Each Participant's account shall be credited with
interest at the rate in effect from time to time on statement savings accounts
of Wilmington Trust Company that may not be accessed by check.

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            10.   STOCK.

                  a. The shares to be sold to Participants hereunder are to be
 authorized and unissued shares of Common Stock, or issued shares of Common
 Stock that the company has reacquired and holds in its treasury. The maximum
 number of shares that shall be made available for sale hereunder during all
 offerings shall be 400,000 shares, subject to adjustment upon changes in WTC's
 capitalization as provided in Paragraph 14 below.

                  b. None of the rights or privileges of a stockholder of WTC
 shall exist with respect to shares purchased hereunder until the end of the
 Purchase Period with respect to which those shares were acquired.

                  c. If in any offering Employees subscribe for more shares than
remain available under the Plan, the shares in that offering shall be allocated
PRO RATA among employees by multiplying the number of shares remaining under the
Plan by a fraction, the numerator of which is the number of shares the Employee
subscribed for in that offering and the denominator of which is the number of
shares all Employees subscribed for in that offering.

                  d. Shares to be delivered to an Employee hereunder will be
registered in the Employee's name or, if directed by written notice to
Wilmington Trust Company's Human Resources Division before the end of a Purchase
Period, in the names of the Employee and one other person, as joint tenants with
rights of survivorship, to the extent permitted by applicable law.

            11.   ADMINISTRATION. The Plan shall be administered by a committee
(the "Committee") consisting of not less than three members who shall be
appointed by WTC's Board of Directors. Each member of the Committee shall be
either a director, an officer or an Employee of an Employer. The Committee shall
be vested with full authority to make, administer, and interpret rules and
regulations that it deems necessary or desirable to administer the Plan. Any
determination, decision, interpretation, administration, or application
hereof shall be final, conclusive, and binding upon all Participants and any
and all persons claiming under or through any Participant.

            12.   DESIGNATION OF BENEFICIARY. A Participant may file with
Wilmington Trust Company's Human Resources Division a written designation of a
beneficiary who is to receive any shares and/or cash for the Participant's
credit hereunder in the event of that Participant's death before the delivery of
those shares and/or cash. The Participant may change that designation at any
time by providing written notice to Wilmington Trust Company's Human Resources
Division. Upon the death of a Participant and receipt by Wilmington Trust
Company's Human Resources Division of proof of the Participant's death and the

                                       5
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identity and existence of a beneficiary validly designated hereunder, WTC shall
deliver those shares and/or that cash to the executor or administrator of the
Participant's estate. If no such executor or administrator has been appointed to
WTC's knowledge, WTC may, in its discretion and in such form as the Committee
may prescribe, deliver those shares and/or that cash to the Participant's spouse
or to any one or more dependents or relatives of the Participant. If no spouse,
dependent or relative is known to WTC, then WTC may, in its discretion and in
such form as the Committee may prescribe, deliver those shares and/or that cash
to such other person as the Committee may designate. No such designated
beneficiary shall, before the death of the Participant by whom the beneficiary
has been designated, acquire any interest in the shares and/or cash credited to
the Participant hereunder.

            13.   TRANSFERABILITY. No rights with respect to the exercise of any
option or to receive shares hereunder may be assigned, transferred, pledged, or
otherwise disposed of by an Employee. Options granted hereunder are not
transferable by an Employee otherwise than by will or the laws of descent and
distribution, and are exercisable during an Employee's lifetime only by the
Employee.

            14.   CHANGES IN CAPITALIZATION. The number and kind of shares
subject to outstanding options hereunder, the purchase price of those options
and the number and kind of shares available for options subsequently made
available hereunder shall be adjusted appropriately to reflect any stock
dividend, stock split, combination, or exchange of WTC's shares, merger,
consolidation, or other change in WTC's capitalization with a similar
substantive effect upon the Plan or options granted or to be granted hereunder.
The Committee shall have the power and sole discretion to determine the nature
and amount of the adjustment to be made in each case.

            15.   USE OF FUNDS. All payroll deductions received or held by an
Employer hereunder may be used by the Employer for any corporate purpose, and
the Employer shall not be obligated to segregate those payroll deductions.

            16.   GOVERNMENT REGULATIONS. WTC's obligations to sell and deliver
WTC's stock hereunder are subject to the approval of any governmental authority
required in connection with the authorization, issuance, or sale of that stock.
WTC's Board of Directors may, in its discretion, require as conditions to the
exercise of any option granted hereunder that the shares of Common Stock
reserved for issuance upon the exercise of the option have been duly listed,
upon official notice of issuance, on a stock exchange or the National
Association of Securities Dealers Automated Quotation System, and that either:

                  a. A Registration Statement with respect to those shares is
effective under the Securities Act of 1933; or

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<PAGE>

                  b. The Participant has represented at the time of purchase, in
form and substance satisfactory to WTC, that he or she intends to purchase those
shares for investment and not for resale or distribution.

            17.   AMENDMENT OR TERMINATION. Unless terminated sooner by WTC's
Board of Directors, the Plan shall terminate automatically as of May 31, 2004.
WTC's Board of Directors may terminate or amend the Plan at any time. No such
termination shall affect options previously granted hereunder. No such amendment
may make any change in any option theretofore granted hereunder that would
adversely affect the rights of any Participant, nor be made without the prior
approval of a majority of the shares of WTC's outstanding stock if such approval
would be required by law, including if that amendment would:

                  a. Permit the sale of more shares than are authorized under
Paragraph 10 above; or

                  b. Permit payroll deductions at a rate in excess of 10% of a
Participant's Base Salary.

            18.   NO EMPLOYMENT RIGHTS. The Plan does not, directly or
indirectly, create any right for the benefit of any Employee or class of
Employees to purchase any shares hereunder, or create in any Employee or class
of Employees any right with respect to continuation of employment by WTC or any
direct or indirect subsidiary thereof. The Plan shall not be deemed to interfere
in any way with the right of WTC or any direct or indirect subsidiary thereof to
terminate, or otherwise modify, an Employee's employment at any time.

            19.   GOVERNING LAW. Delaware law, other than the conflict-of-laws
provisions of such law, shall govern all matters relating to the Plan, except as
that law is superseded by the laws of the United States.

            20.   DEFINITIONS. Unless otherwise defined herein, capitalized
terms used herein shall have the following meanings:

                  a. "Base Salary" means regular straight-time earnings,
excluding payments for overtime, incentive compensation, bonuses, and other
special payments except to the extent the Committee specifically approves
including any such item.

                  b. "Committee" means the committee established pursuant to
Paragraph 11 above to administer the Plan.

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<PAGE>

                  c. "Date of Offering" shall be the first day of each
Purchase Period.

                  d. "Employee" shall mean any person, including an officer, who
is customarily employed by an Employer for 15 hours or more per week and for
more than five months in a calendar year.

                  e. "Employer" means WTC and any subsidiary company designated
as a participating company by WTC's Board of Directors, 15% or more of the
voting stock of which is owned directly or indirectly by WTC.

                  f. "Participant" means an Employee who has agreed to
participate in an offering and has met the requirements of Paragraph 4 above.

                  g. "Purchase Period" means each of the periods during which a
Participant may purchase Common Stock pursuant to any particular offering
hereunder.

                  h. "Section 16 Officers" means officers of WTC and/or
Wilmington Trust Company, or of any subsidiary of either of those entities 25%
or more of the voting stock of which is owned directly or indirectly by WTC
and/or Wilmington Trust Company, designated as Section 16 Officers by resolution
of the Board of Directors of the respective companies from time to time.

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