Document:

<Page>

                                  EXHIBIT 10.9

                              SEVERANCE AGREEMENT

         The Severance Agreement (the "Agreement") is executed by and between
RadView Software, Inc. ("RadView" or the "Company"), a corporation with
principal offices located at 7 New England Executive Park, Burlington,
Massachusetts 01803, and James W. Clemens ("Employee"), an individual with a
principal residence located at 131 Rolling Meadow Dr. Holliston MA 01746.

         WHEREAS, Employee was terminated from the Company as of July 20, 2001;
and

         WHEREAS, the Company has an interest in acknowledging Employee's past
service to the Company and to have the relationship end on a mutually agreeable
note;

         NOW THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, and intending to be legally bound,
the parties do hereby agree as follows:

1.       Employee acknowledges that he was terminated from the employment of
         RadView as of July 20, 2001, that the amount of his accrued salary,
         vacation and any other compensation due to him through this date is
         equal to $34,165, and that this amount will be paid by July 27, 2001.

2.       Employee, on behalf of himself, his heirs, agents, representatives,
         assigns, executors, administrators and any other person or entity who
         might claim through him (collectively, "Employee's Affiliates"), hereby
         releases and forever discharges RadView and any RadView current or
         former officer, director, partner, shareholder, employee, affiliate,
         parent or any other person or entity acting on behalf of any of them
         (collectively, the "RadView Affiliates"), from any and all causes of
         action, claims, damages, suits, demands, costs or other liabilities of
         every name and nature (collectively, the "Claims"), known or unknown,
         arising or which may have existed, before the effective date of this
         Agreement, including, but not limited to, any claims under Title VII of
         the Civil Rights Act of 1964, the Civil Rights Act of 1991 (42 U.S.
         Code s.1981), the Employee Retirement Income Security Act of 1974
         (section 510), the Americans with Disabilities Act of 1990
         (Massachusetts General Laws chapter 151B), or any analogous state
         statutes regulating employment and benefits, and any and all other
         statutory or common law claims in any manner relating to Employee's
         employment with RadView or his separation from such employment.

3.       Employee also represents, on behalf of himself and Employee's
         Affiliates, that neither he nor they has, nor will institute against
         RadView or any of the RadView Affiliates, any action or proceeding in
         any court, administrative agency or other tribunal with respect to any
         of the Claims, arising or which may have existed prior to Employee's
         execution of this Agreement.

4.       Employee represents that he has returned to RadView, or will return to
         RadView within one (1) week following the date of this Agreement, all
         property and business information (whether in electronic, printed or
         other form) which are the property of, or which relate to, RadView, its
         customers, suppliers, corporate affiliates, trade and/or business, and
         which came into Employee's possession by virtue of his employment with
         RadView.

5.       Employee acknowledges that, following his resignation from the Company;
         he continues to be bound by the provisions of sections 3 and 4 of the
         letter employment agreement of April 11, 2000, except clause 4 (A)
         shall apply only for six months, and the employment agreement of
         January 9, 2001 both of which were executed by Employee. Employee
         agrees that he will not make any statements that are professionally or
         personally disparaging about, or adverse to, the interests of the
         Company (including its officers, directors and management employees)
         including, but not limited to, any statements that disparage any
         person, product, service, finances, financial condition, capability or
         any other aspect of the business of the Company, and that he will not
         engage in any conduct which is intended to harm professionally or
         personally the reputation of the Company (including its officers,
         directors and management employees),

<Page>

         PROVIDED, HOWEVER, THAT, this paragraph 5 shall not prohibit him from
         exercising any legal rights or obligations he may have to participate
         in or cooperate with any investigations by, any government agency.

6.       RadView shall respond to any request for a job reference for Employee
         from prospective employers after the effective date of this Agreement
         by stating that it is RadView's policy only to verify employment
         status, position held and dates of employment.

7.       Subject to Employee's satisfaction of his obligations hereunder,
         RadView agrees to pay to Employee an amount equal to $127,000 less
         deductions for any and all other appropriate and regular deductions
         normally deducted from like employee payments less regular payroll
         taxes (the "Severance Amount"). All other fringe benefits, except for
         medical and dental, not specifically included in the Severance Amount
         will be terminated, including but not limited to short-term disability,
         long-term disability, life insurance and 401(k) withholdings. RadView
         will continue Employees medical and dental coverage for a period of six
         months from the date of this Agreement. Employee acknowledges and
         agrees that his base salary as of July 20, 2001 is one hundred and
         fifty thousand dollars ($150,000) and his annual commission is one
         hundred and sixty thousand dollars ($160,000). Payment of the Severance
         Amount shall be made in the same manner as normal payroll as a one-time
         lump sum payment by July 27, 2001.

8.       RadView agrees not to contest any claim that Employee may make for
         unemployment benefits.

9.       The parties agree that the existence of this Agreement and its
         provisions, terms and conditions are to be held in strict confidence.
         Employee expressly agrees not to discuss the existence of this
         Agreement and its terms with any person or organization other than his
         attorneys, accountants and immediate family members, each of whom
         Employee will require to maintain the confidentiality of such
         information. Advance written notice to RadView's legal counsel is
         required to disclose information that would violate the confidentiality
         provisions set forth in this paragraph.

10.      The parties agree that the considerations exchanged herein do not
         constitute and should not be construed as constituting any admission of
         any sort on the part of a party, and that this Agreement may not be
         used as evidence in any subsequent proceeding of any kind except one in
         which enforcement of this Agreement is sought or contested.

11.      Should any part, term or provision of this Agreement be determined by
         any tribunal, court or arbitrator to be illegal, invalid or
         unenforceable, the validity of the remaining parts, terms or provisions
         shall not be affected thereby, and the illegal, invalid, or
         unenforceable part, term or provision shall be deemed not to be a part
         of this Agreement.

12.      This Agreement if not executed by Employee and delivered by hand or fax
         to RadView by 5:00 PM (EST) on Friday, July 20, 2001; shall
         automatically be null, void and of no effect.

THE PARTIES represent that they have read and fully understood the foregoing
provisions, accept the same in their entirety, and are fully authorized and
competent to execute this Agreement.

         Employee                           RADVIEW CORPORATION

         /s/ James Clemens                  By: /s/ Brian E. LeClair
         ---------------------------            -------------------------------
         Date: July 20, 2001                              Brian E. LeClair
                                                          Vice President & CFO
                                                          Dated:  July 20, 2001

                                       2QuickLinks
 -- Click here to rapidly navigate through this document

 
 

EXHIBIT 4.3    
  

 
 

STOCK PURCHASE AGREEMENT    
  

        THIS
AGREEMENT is made this 11 day of December 1996 BY AND BETWEEN: 

	1.
	Coherent Inc.,
a company incorporated in Delaware in the United States of America, whose registered office is at 5100 Patrick Henry Drive, Santa Clara, CA 95054, United States
of America (hereinafter referred to as the "Purchaser");

	2.
	Mr
Harry Asonen (050556-029M), Koivikonkatu 23, 33820 Tampere, Finland;

Mr Rauno Asonen (280448-4517), Pihatanhua 11, 33480 Mutala, Finland;

Mr Simo Arra (310146-5691), 36420 Sahalahti, Finland;

Mr Juha Hautala (190963-0158), Seljatie 12, 36200 Kangasala, Finland;

Mrs Leena Kivipelto-Mattila (300453-236V), Järveläntie 6, 37800 Toijala, Finland;

Mr Hannu Kojola (171144-451R), Turuntie 346, 21870 Riihikoski, Finland;

Mr Jouko Lammasniemi (230863-189M), Vilppulanpolku 4 A 1, 33720 Tampere, Finland;

Mr Jari Näppi (021162-175T), Sammonkatu 27 E 67, 33540 Tampere, Finland;

Mr Aleksander Ovtchinnikov (250161-217N), Lehtikatu 7 E 25, 33340 Tampere, Finland;

Mr Markus Pessa (211141-1594), Miekkakatu 13 C 11, 33530 Tampere, Finland;

Mr Keijo Rakennus (110461-137F), Kyläojankatu 1 B 9, 33700 Tampere, Finland;

Mr Mika Toivonen (140466-111V), Miekkakatu 13 A, 33530 Tampere, Finland;

Mr Arto Salokatve (051061-171J), Lindforsinkatu 8 B 33, 33720 Tampere, Finland and

Mr Pekka Savolainen (160269-1010), Arkkitehdinkatu 28 B 27, 33720 Tampere, Finland

(hereinafter referred all together to as the "Vendors") 

        WHEREAS:

	(A)
	Tutcore
Oy Ltd. is a company registered in Tampere in Finland under number 516.984 (hereinafter referred to as the "Company");

	(B)
	The
Vendors are each the beneficial owners in the following proportions of the ordinary voting shares of FIM 100 each in the Company, which shares in aggregate represent the entire
issued share capital FIM 560.000 of the Company: 

	 	Mr Harry Asonen	 	 	 	720 shares;	 
	 	Mr Rauno Asonen	 	 	 	320 shares;	 
	 	Mr Simo Arra	 	 	 	352 shares;	 
	 	Mr Juha Hautala	 	 	 	80 shares;	 
	 	Mrs Leena Kivipelto-Mattila	 	 	 	368 shares;	 
	 	Mr Hannu Kojola	 	 	 	352 shares;	 
	 	Mr Jouko Lammasniemi	 	 	 	704 shares;	 
	 	Mr Jari Näppi	 	 	 	720 shares;	 
	 	Mr Aleksander Ovtchinnikov	 	 	 	80 shares;	 
	 	Mr Markus Pessa	 	 	 	720 shares;	 
	 	Mr Keijo Rakennus	 	 	 	544 shares;	 
	 	Mr Mika Toivonen	 	 	 	320 shares;	 
	 	Mr Arto Salokatve	 	 	 	160 shares 	and
	 	Mr Pekka Savolainen	 	 	 	160 shares 	 
	 	 	 	

	 	 	 	Total: 5.600 shares  	 

	(C)
	The
Purchaser and the Vendors have agreed to enter into this Agreement for the purpose of which is the acquisition of the Company through sale and purchase of the shares of the
Company. By this
Agreement the Purchaser shall purchase 80% of the shares of the Company in proportions they are owned by the Vendors. Further, the Purchaser shall have an option to acquire the remaining 

 

20%
of the shares of the Company from the Vendors at the end of the fifth year from the date of this Agreement in accordance with the terms of Clause 6 of this Agreement. 

	(D)
	The
Vendors have agreed to sell and the Purchaser has agreed to purchase, in reliance upon the representations, warranties, indemnities and undertakings hereinafter contained or
referred to, the shares of the Company on and subject to the terms and conditions hereinafter appearing. 

        NOW,
IT IS HEREBY AGREED AS FOLLOWS: 

        Interpretation 

In
this agreement, unless the contrary intention appears, the following definitions apply: 

Effective
Date shall mean the date of this Agreement; 

Third
Year shall mean the calendar year 1999 and Three Years shall mean the time from the Effective Date till the end of calendar year 1999; 

Fifth
Year shall mean the calendar year 2001 and Five Years shall mean the time from the Effective Date till the end of calendar year 2001; 

Semiconductor
Products shall mean the products produced or intended to be produced by the Company as defined in Enclosure 1; 

Shares
shall mean the shares, specified in Clause 2 below, of the Company that are sold with this Agreement; 

Remaining
Shares shall mean the shares of the Company that will be subject to the option right of the Purchaser in accordance with the terms in Clause 6; 

Warranties
shall mean the warranties and representations by the Vendors in Clause 12. 

Words
denoting the single number only include the plural and viceversa. 

The
headings in this Agreement are inserted for convenience only and do not affect its construction. 

	1.
	Agreement for sale

	1.1
	Subject
to the terms and conditions of this agreement, the Vendors shall sell as beneficial owners and with full title and the Purchaser shall purchase the Shares free from all liens,
charges and encumbrances and with all rights attaching to them and with effect from the date of this Agreement.

	1.2
	Each
of the Vendors hereby waives any pre-emption rights he may have in relation to any of the Shares under the Articles of Association of the Company or otherwise.

	2.
	The object of the sale and purchase

The
object of the sale and purchase is 4.480 shares in the Company, which shares in aggregate represent 80% of the all of the Shares as well as 80% of all of the voting rights in the Company. The
Shares to be sold hereunder shall be divided between the Vendors as specified in Enclosure 2 hereto. 

	3.
	Purchase consideration

	3.1
	The
aggregate purchase consideration for the Shares shall be the sum of USD four million (4.000.000) as First Instalment together with additional payments specified in Clauses 4 and 5
respectively.

	3.2
	From
the First Instalment 75 per cent, i.e USD 3.000.000, shall be paid in cash to the Vendors at the Effective Date. The balance of the First Instalment, i.e USD 1.000.000, shall be
paid by way of 

2

 

depositing
the sum in an interest bearing escrow account to secure the liability of the Vendors as set forth in Clause 13 hereinbelow. The deposition shall be made at Merita Bank Ltd.
Finland, in terms agreed by both parties. This sum shall be released to the Vendors as soon as the time whereby the Purchaser is to present its claims pursuant to Clause 13 has lapsed, provided
that the Purchaser has not made any claims. 

	3.3
	The
Vendors shall be entitled to the purchase consideration and first and second additional payments mentioned in Clauses 4. and 5. and payments made under the Option Right mentioned
in Clause 6 as nearly as may be in proportion to their holdings of the Shares.

	4.
	First additional payment

	4.1
	After
Three Years the Purchaser shall pay to the Vendors the sum calculated in accordance with the following formula: 

	USD Three-Year Semiconductor Sales
 USD 59.000.000	x USD 2.000.000

in
which the value of the Semiconductor Sales shall be the net sales value of the sold Semiconductor Products during the Three Years (Enclosure 3). 

	4.2
	Notwithstanding
the foregoing the first additional payment shall in no event exceed USD 2.000.000.

	4.3
	The
payment shall be made in cash within Sixty Days from the end of the Third Year.

	5.
	Second additional payment

	5.1
	After
Five Years the Purchaser shall pay to the Vendors the sum calculated in accordance with the following formula: 

	USD Five-Year Semiconductor Sales
 USD 160.000.000	x USD 2.000.000

in
which the value of the Semiconductor Sales shall be the net sales value of the sold Semiconductor Products during the Five Years (Enclosure 3). 

	5.2
	Each
of the Vendors shall have an individual right to choose the way of payment of their proportion out of second additional payment as follows:

	(a)
	in
cash

or

	(b)
	in
shares of Coherent Inc. common stock 

in
which calculation the shares of Coherent Inc. shall be valued as to the closing price quoted by the NASDAQ stock market at the Effective Date. In case there will be any stock splits, stock
dividends or similar capital reorganisations the value of shares shall be adjusted. 

	5.3
	Notwithstanding
the above the portion of the second additional payment to be paid in the shares of Coherent Inc. common stock shall not exceed in value USD 2.000.000. The
balance between the aggregate second additional payment and the portion of the same to be paid in shares of Coherent Inc. shall be paid in cash. Each Vendor has right for payment in shares in
proportion of their ownership of
the Shares when the demand of shares exceeds the limit value of USD 2.000.000. If one or more of the Vendors decides not elect the payment in shares, these shares shall not be divided to other
Vendors. 

3

 
	5.4
	The
payment shall be made within 60 days following the end of the Fifth Year. The Vendors shall deliver a written notice of their intent to choose shares of
Coherent Inc. as a way of payment to the Purchaser latest 30 days after the end of the Fifth Year. Otherwise the Purchaser shall have the option to choose the way of payment.

	5.5
	In
case the Vendors choose shares of Coherent Inc. as a way of payment according to Clauses 5.2 to 5.4 above following terms on request for registration shall apply: 

(a)    If
the Purchaser shall receive a written request from the holders of not less than fifty percent (50%) of the shares of Coherent Inc. mentioned in Clauses 5.2 to 5.4 that the
Purchaser file a registration statement under the Securities Act of 1933, as amended (the "Act"), then the Purchaser shall promptly notify all other holders of such request and shall use its
best efforts to cause all shares of Coherent Inc. mentioned in Clauses 5.2 to 5.4 that holders have requested to be registered on Form S-3 under the Act; 

(b)    The
Purchaser shall be obligated to effect only one registration pursuant to this paragraph. The Purchaser shall have no obligation pursuant to this paragraph if, in the opinion of
counsel to the Purchaser, the shares of Coherent Inc. mentioned in Clauses 5.2 to 5.4 can be freely transferred without registration under Rule 144 promulgated under the Securities
Exchange Act of 1934; 

(c)    The
Purchaser's obligations set forth above are conditioned upon the Vendors cooperating with the furnishing of information to be included in the registration, and the Vendors signing
a standard stockholders agreement whereby they agree to coordinate the sale of shares of Coherent Inc. mentioned in Clauses 5.2 to 5.4 with the Purchaser to ensure compliance with the Act; 

(d)    All
expenses relating to the registration, other than underwriting discounts, selling commissions and stock transfer taxes applicable to the Shares to be registered, shall be paid by
the Purchaser; 

(e)    Words
"register", "registered" and "registration" refer in the context above to a registration effected by preparing and filing a registration statement in compliance with the Act and
the declaration or ordering of the effectiveness of such registration statement. 

	6.
	Option for redemption of the Remaining Shares

	6.1
	At
end of Fifth Year the Vendors shall have the right to require that the Purchaser shall purchase the Remaining Shares and the Purchaser shall have the right to require that the
Vendors shall sell all or some of the Remaining Shares to the Purchaser to a price determined in the following formula ("The Option Right"): 

	USD Five-Year Semiconductor Sales
 USD 160.000.000	x USD 2.940.000

in
which the value of the Semiconductor Sales shall be the net sales value of the sold Semiconductor Products during the Five Years. 

	6.2
	The
Option Right shall be exercised by delivery of a written notice by the party wishing to exercise the Option Right to the other parties within 90 days following the end of
the Fifth Year.

	6.3
	The
parties shall be bound to complete the sale and purchase of the Remaining Shares 14 days after date of service of the notice of exercise of the Option Right. 

4

  

	

6.4	

Completion of the sale and purchase shall take place at the offices of Merilampi, Marttila & Laitasalo in Tampere or at such other place as the parties shall mutually agree not later than 3.00 p.m. on the relevant day. The Vendors shall
then deliver to the Purchaser (i) a duly executed transfer of the Remaining Shares accompanied by the relative share certificates, (ii) a waiver of any applicable rights of pre-emption, duly signed by all the other members of the Company,
and (iii) such other deeds and documents as may be necessary to transfer to the Purchaser or as it may direct the unencumbered beneficial ownership of the Remaining Shares.
	

6.5	

All rights attached to the Remaining Shares shall accrue to the Purchaser on the date of service of the notice exercising the Option Right and, following the exercise of the Option Right, the Vendors shall account to the Purchaser for all dividends
or other distributions of the Company declared or paid by reference to a record date which is subsequent to the date of service and shall exercise all voting and other rights at the direction of the Purchaser.
	

6.6	

Each of the Vendors hereby warrant to the Purchaser that he is and will remain until the exercise or expiry of the Option Right the beneficial owner of the Remaining Shares, subject only to the Option Right, and has and will have full power and
authority to grant an option in respect of the same upon the terms and conditions of this agreement. The Vendors shall not prior to the exercise of expiry of the Option Right transfer, dispose of, charge, pledge or encumber in any way its interest in
any of the Remaining Shares and the Remaining Shares shall upon completion be sold free of any liens, charges or encumbrances.
	
7.	

Late payment	
 	

 
	

 	

For any delay in the payments referred to in Clauses from 3 to 6 the Purchaser is liable to pay an annual interest of 18%.
	
8.	

Conditions and rescission
	

8.1	

The purchase of the Shares is conditional upon the respective approvals of the Board of Directors of Coherent Inc.;
	

8.2	

The Purchaser shall be entitled to rescind this agreement by notice in writing to the Vendors if prior to completion it appears that the above condition shall not be met or any of the warranties is not or was not true and accurate in all respects of
if any act or event occurs which, had it occurred on or before the date of this agreement, would have constituted a breach of any of the warranties or if there is any material breach or nonfulfilment of any of the warranties which (being cable of
remedy), is not remedied prior to completion.
	
9.	

Completion
	

 	

Provided that it has not been rescinded in accordance with clause 8 the completion shall take place after signing without delay and on December 15, 1996 at the latest when all the transactions mentioned in the following subclauses shall be
completed:
	

 	

(a)        The 75 per cent of the First Instalment of the purchase consideration shall be paid in cash into the account directed by the Vendors in proportions directed by the Vendors;
	

 	

(b)        The balance of the First Instalment shall be paid to the escrow account;
	

 	

(c)        The Vendors shall deliver to the Purchaser duly completed and signed transfers in favour of the Purchaser or as it may direct in respect of the Shares together with the relative share
certificates;
	

 	

(d)        The Company shall execute contracts of employment and contracts of consulting mentioned in Clause 14;
	

 	

(e)        The title to the Shares shall pass to the Purchaser as the Shares are delivered.
	
 	

 	

 	
 	

 

5

 

	
10.	

Stamp duty
	

 	

The stamp duty payable on this sale and purchase shall be paid by the Purchaser.
	
11.	

Confidentiality	
 	

 
	

 	

The parties shall keep confidential all information acquired from the other parties in connection with entering into or negotiating this Stock Purchase Agreement as well as the terms of this Agreement, except if the party is liable to reveal such
information pursuant to laws or regulations or if the information is already in public domain.
	
12.	

Representations and Warranties by the Vendors
	

 	

The Vendors jointly and severally represent and warrant to the Purchaser that
	

12.1	

The following representations and warranties of the Vendors are accurate and in full force as at the date of signing of this stock purchase agreement and at the Effective Date, unless the wording of the warranty otherwise implies;
	

12.2	

The accounts for the period ended December 31, 1995 and for the preceding three accounting periods of the Company were prepared in accordance with the historical cost convention, and the basis and policies of accounting adopted in preparing the
accounts are the same as those adopted in preparing the accounts of the Company in respect of the three last preceding accounting periods;
	

12.3	

The accounts of the Company give a true and fair view of the assets and liabilities of the company and its profits for the financial period ended on relevant last accounts date, comply with the requirements of Finnish Companies Act, Bookkeeping Act,
good accounting principles and any other relevant statute, properly reflect the financial position of the Company as at their date, fully disclose all the assets of the Company as at their date and make full provision or reserve for all liabilities
and capital commitments outstanding at the relevant last accounts date, including contingent, unquantified or disputed liabilities.
	

12.4	

The execution of this stock purchase agreement will not violate any agreement that the Company is a party to, or any laws, rules or regulations and no consents are required from the government or any third parties to complete the transaction. This
warranty considers the financial support contracts between TEKES and the Company and between European Communities and the Company which have been presented to the Purchaser;
	

12.5	

The information regarding the Company given by the Vendors to the Purchaser is correct, the Vendors have given to the Purchaser all information required by the Purchaser and the Vendors have not failed to inform the Purchaser of any material
information regarding the Company or the Shares;
	

12.6	

There are no pending amendments to the information contained in the extract from Trade Registry as at 8.11.1996 and the Articles of Association as at 13.3.1996 of the Company, and the organs of the Company have not made any resolutions, which should
have been entered into the Trade Registry.
	

12.7	

The Company is duly organized, validly existing and in good standing under the laws of Finland and has all the requisite corporate power and authority to own, lease and operate its properties and assets as in the present time owned, leased and
operated and to carry on its business as in the present time being conducted;
	
 	

 	

 	
 	

 

6

 

	

12.8	

The entire paid up share capital of the Company is FIM 560.000 and the property given as subscription in kind, which has been transferred to the Company to cover its share capital, correspond in value the amount for which the Vendors have subscribed
for shares in the Company against property given as subscription in kind, and such property is in the possession of the Company;
	

12.9	

The Company has not resolved to increase or decrease its share capital, to obtain loans with equity warrants or loans with convertible debentures, to alter the nominal value of the shares or any other resolutions which might have effect on the
shareholders' equity of the Company, which have not been informed to the Purchaser excluding resolutions relating to the normal business of the Company;
	

12.10	

The Vendors own, they have the unencumbered right and they are legally permitted to transfer the Shares which shares in aggregate represent 80% of all of the shares in the Company as well as 80% of the total voting rights vested to all of the shares
of the Company, and the Shares are not subject to any pledges, liens, encumbrances or other third-party rights;
	

12.11	

To the knowledge of the Vendors the Company has from the point of view of its business no substantial financial liabilities (to include latent liabilities, off-balance sheet debts and tax liabilities), which do not appear from the list delivered by
the Vendors (Enclosure 4). Should such liabilities nevertheless arise, the Vendors shall be responsible for them, to the extent they relate to time prior to Effective Date in accordance with clause 13 hereinafter;
	

12.12	

The property of the Company is not subject to other charges, pledge rights, securities, material third-party rights or other substantial encumbrances than those specified in the list delivered by the Vendors (Enclosure 5). The Vendors have not made
any promises to create such rights or encumbrances;
	

12.13	

The property of the Company is not as a security for third-party debts or liabilities and the Company has not given any commitments for the benefit of third-party liabilities;
	

12.14	

The receivables of the Company do not contain any exceptional payment terms or risk of bad debt, which have not been separately informed to the Purchaser;
	

12.15	

The Company has good, marketable and unencumbered title to all of the assets (including liquid assets, floating assets and fixed assets) specified in the list delivered by the Vendors (Enclosure 6). The assets are free and clear of any other pledges,
liens, encumbrances or other third-party rights other than these mentioned in Enclosure 5.
	

12.16	

The agreement between Tampere University of Technology and the Company relating to the possession and use of the premises being possessed under lease agreement are in full force and this agreement has no effect to the mentioned lease
agreement;
	

12.17	

The Company has an insurance coverage, which in accordance with normal insurance practice covers the assets of the Company as well as, taking into consideration the special aspects relating to the business of the Company, the need for insurance
coverage required otherwise in its activities;
	

12.18	

To the best of the Vendors' knowledge all material industrial and intellectual property rights as well as manufacturing rights and knowhow, which are necessary to maintain and develope the activities of the Company, are freely at the use of the
Company without charge. Except for the industrial and intellectual property owned, licensed or freely used by the Company, no other intellectual property rights are required for the conduct the business of the Company. This warranty shall not apply
to the joint developement project between the Company and IVO and the rights of the IVO which are based on this project. The Purchaser is aware of the project mentioned;
	
 	

 	

 	
 	

 

7

 

	

12.19	

No right or license on industrial and intellectual property of the Company has been granted to any person to use in any manner. This warranty shall not apply to the product developement agreements between the Company and EG & G dated
24.101994 and 14.7.1995 which the Purchaser is aware of;
	

12.20	

The Company has not transferred its fixed assets nor has it made any agreement of such transfer, and the Company has not acquired or made an agreement to acquire property or assets other than within its normal business;
	

12.21	

Any and all agreements material to the business of the Company have been specified in Enclosure 7 hereto;
	

12.22	

All agreements, to which the Company is a party and which have material effect to the financial status or business of the Company, comply as at the date of this Agreement with following terms:
	

 	

(i)        the agreements have not been terminated, either prematurely or otherwise or be breached so that there would exist grounds for termination or premature termination,
	

 	

(ii)        the agreements are not subject to termination on grounds that the ownership of the Company is changed in accordance with this agreement on sale and purchase;
	

12.23	

All permits, licences, authorizations and agreements necessary for the conduct of the Company's activities are as at the date of this agreement in full force, and to the knowledge of the Vendors they have not been breached or terminated and there has
been no disturbances in the same, and any of the above is neither expected to the knowledge of the Vendors;
	

12.24	

All returns, notifications, computations and payments which should have been made or given by the Company for any taxation purpose were made or given within the requisite periods and are up-to-date, correct on a proper basis and none of them is or is
likely to be a subject of any dispute with the taxation authorities.
	

12.25	

As at the date of this agreement the Company has no pending of threatened litigations or arbitration procedures or other legal investigations and the assets of the Company are not subject to tax complaints, precautionary measures, administrative
measures by the authorities or other similar measures, and to the knowledge of the Vendors no such measures are expected to arise;
	

12.26	

To the best of Vendors' knowledge, after a reasonable investigation, the Company has complied with the liabilities under environmental laws and especially with the liability under laws on storage or transportation of hazardous materials, and it is
not expected that the Company would be faced with liability thereon;
	

12.27	

The pension liabilities of the employees have been fully covered and the pension benefits have been arranged in accordance with the normal practice in this field;
	

12.28	

All information given by any of the Vendors or on behalf of them relating to the Company or its business was, when given, and is now accurate and comprehensive in all respects, and there are no material facts or circumstances, in relation to the
Company or its business, which have not been fully and fairly disclosed to the Purchaser and which, if disclosed, might reasonably have been expected to affect the desision of the Purchaser to enter into this agreement;
	

12.29	

The Company shall continue its business in the ordinary course from the date of this agreement to the Effective Date and report to the Purchaser any indication of potential material adverse factors in its business, such as loss of distributors, new
announcements in competitive technology, intentions of key employees to resign or leave, or any other adverse factors;
	

12.30	

The Vendors shall have no claim or right to any of the earnings of the Company for the five year period ending December 31, 2001
	
 	

 	

 	
 	

 

8

 

	

12.31	

In case the Company and / or the Vendors in spite of above warranty has failed to comply with any of the above liabilities or the Company otherwise is liable to act as referred to above, the Vendors shall indemnify the Company against so caused
detrimental financial consequences in accordance with Clause 13 below to the extent they relate to time prior to the Effective Date of this Agreement.
	
13.	

Indemnities	
 	

 
	

13.1	

In the event that:

	—
	the
Company lacks assets, which it pursuant to this stock purchase agreement and Vendors' warranties should have;

	—
	the
Company has or it contains or acquires liabilities, debts or other such financial consequences, which relate or are based on time prior to the Effective Date, which do
not appear from this stock purchase agreement or from the information, which the Vendors have otherwise given to the Purchaser or which do not belong to normal business;

	—
	the
representation and warranties given by the Vendors in this agreement or otherwise would not be true;

	—
	any
environmental matter or matter on hazardous materials will cause claims against or costs to the Company which claims or costs have their origin or basis in the time
prior to the Effective Date;

	—
	the
Company otherwise deviates from which the Vendors have in this agreement or otherwise informed;

	—
	the
Vendors have otherwise committed a breach of the terms of this agreement; 

	

 	

the Purchaser shall be entitled to reduction of purchase price or indemnification which is equal to the proportion such lack of funds, excessive liabilities, taxes of other detrimental financial consequences are in proportion to its shareholding or,
at its sole discretion, to claim that the terms of this agreement are fulfilled. The amount of indemnification the Vendors may be liable for shall not exceed the purchase consideration, first and second additional payments and the payments made under
option right which are defined in clauses 3-6.
	

13.2	

The Purchaser shall be liable to notify all indemnification and purchase price reduction claims pursuant to this agreement to the Vendors by one year from the Effective Date at the latest. The Purchaser shall be entitled to and is liable, however, to
notify the claims relating to taxes within three months from the date the Purchaser has been informed of the tax decision for the Company concerning the accounting period which ends on 31.12.1996.
	

13.3	

The Vendors shall be liable to pay for the indemnification or for the reduced purchase price to the Purchaser interest in accordance with the act on interest.
	

13.4	

If a breach of Clauses 14 and 15 constituting liability according to Clause 13 is committed by a single Vendor the other Vendors shall be free from liability based on such breach or act.

9

   14.  Key employees and consultants of the Company  

	14.1
	The
following Vendors 

Mr
Harry Asonen

Mrs Leena Kivipelto-Mattila

Mr Jari Näppi

Mr Aleksander Ovtchinnikov

Mr Keijo Rakennus

Mr Juha Hautala

Mr Mika Toivonen

Mr Arto Salokatve

Mr Pekka Savolainen

Mr Jouko Lammasniemi

shall
each remain in the service of the Company by entering into contracts of employment or contracts of consulting with substantially in the form and terms annexed hereto as Enclosure 8. 

	14.2
	The
above mentioned Vendors shall be obliged to fulfil their employment or consultancy contracts with their best efforts and not to terminate any or all of the contracts in
5 years from the Effective Date. This clause shall not prevent the Company from terminating any or all of the contracts. 

15.  Prohibition of the competition  

	15.1
	For
the purpose of assuring to the Purchaser the full benefit of the business and goodwill of the Company, each of the Vendors shall not directly or indirectly for seven years after
the Effective Date either on his own account or for any other person:

	(a)
	engage
in competition with the Company;

	(b)
	hold
any intrest in any business which is or shall be wholly or partly in competition with the business of the Company (other than an intrest of not more than 5% of the outstanding
stock of any publicity traded company);

	(c)
	serve
as an employee or consultant to any company engaged in a business competive to the Company; or

	(d)
	solicit,
employ, interfere with or attemp to entice away from the Company any person who is employed by the Company. 

	15.2
	For
purposes of this agreement, a business competive to the Company shall mean any company that manufactures or sells semiconductor laser products, diode-pumped solid-state lasers,
or the materials used to produce them.

	15.3
	Notwithstanding
the foregoing, the obligation set forth in this Clause 15 shall terminate:

	(a)
	In
the case of Vendors who are employees of the Company, six months after such employment with the Company is involuntarily terminated. In event mentioned in 43 § of the
finnish Employment Contract Act the Company has right to terminate the employment or consultant agreement without influence on the prohibition according to this Clause 15.

	(b)
	In
the event Mr Aleksander Ovtchinnikov is prohibited from continuing to work in Finland because of legal restrictions. 

	15.4
	Nothing
in this Clause 15 shall prohibit any Vendor from conducting research on laser devices in an academic setting in Finland so long as no products are manufactured in
commercial quantities or offered for sale to the public or prohibit a Vendor from working for a company where an insubstansial part of its business involves manufacturing or selling semiconductor
laser products, diode-pumped solid-state lasers, or the materials used to produce them, so long as the Vendor is 

10

 

not working in the part of business manufacturing or selling semiconductor laser products, diode-pumped solid-state lasers or the materials used to produce them. An insubstantial part shall mean less
than 5 per cent of total annual revenues. 

16.  Location of the business  

The
Purchaser intends to keep the business and the operations of the Company in Tampere, Finland, except in extraordinary circumstances. Extraordinary circumstances shall be defined to be any
unforeseen event where it would be reasonable under the circumstances for the Purchaser to move the business and the operations. In case the Purchaser closes the business and the operations of the
Company in Tampere the obligations in Clause 14.2 and the noncompete provisions in Clause 15 above shall expire in six months after the move. 

17.  Announcement of the stock purchase  

The
Vendors and the Purchaser shall be bound to make only a joint public announcement of this stock purchase transaction in a way that will be mutually agreed. 

18.  Governing law  

This
Agreement shall be governed by and construed in accordance with Finnish law. 

19.  Disputes  

Any
and all disputes arising out of the Agreement, which may not be settled by the parties' negotiation, shall be finally settled in arbitration to be conducted in accordance with the rules of the
International Chamber of Commerce in Stockholm. The place of arbitration shall be Stockholm, Sweden. 

        IN
WITNESS whereof the parties hereto have executed this Agreement on the date first above written. 

        This
Stock Purchase Agreement has been executed in fifteen identical copies, one for the Purchaser and one for each Vendor. 

11

   
For and on behalf of COHERENT INC. 

	By:	 	    
 Scott H. Miller

Vice President & General Counsel	 	 
	

SIGNED and DELIVERED by HARRY ASONEN	
 	

    

	

SIGNED and DELIVERED by RAUNO ASONEN	
 	

    

	

SIGNED and DELIVERED by SIMO ARRA	
 	

    

	

JUHA HAUTALA signed by Harry Asonen by proxy	
 	

    

	

SIGNED and DELIVERED by LEENA KIVIPELTO-MATTILA	
 	

    

	

SIGNED and DELIVERED by HANNU KOJOLA	
 	

    

	

SIGNED and DELIVERED by JOUKO LAMMASNIEMI	
 	

    

	

SIGNED and DELIVERED by JARI NÄPPI	
 	

    

	

SIGNED and DELIVERED by ALEKSANDER OVTCHINNIKOV	
 	

    

	

SIGNED and DELIVERED by MARKUS PESSA	
 	

    

	

SIGNED and DELIVERED by KEIJO RAKENNUS	
 	

    

	

SIGNED and DELIVERED by MIKA TOIVONEN	
 	

    

	

SIGNED and DELIVERED by ARTO SALOKATVE	
 	

    

	

SIGNED and DELIVERED by PEKKA SAVOLAINEN	
 	

    

12

QuickLinks

EXHIBIT 4.3

STOCK PURCHASE AGREEMENT

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00035-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00035-of-00352.parquet"}]]