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SEATTLE GENETICS, INC.  

 COMMON STOCK  

 PURCHASE AGREEMENT  

 Dated as of February 2, 2001  

 
 

SEATTLE GENETICS, INC.
  
    Common Stock Purchase Agreement

    This
Common Stock Purchase Agreement (this "Agreement") is made as of February 2, 2001 between Seattle Genetics, Inc., a
Delaware corporation with an office at 22215 26th Avenue SE, Suite 3000, Bothell, WA 98021(the "Company"), and Medarex, Inc., a
Delaware corporation with an office at 707 State Road, Suite 206, Princeton, NJ 08540-1437 (the "Purchaser"). 

 
 

RECITALS    
  

    WHEREAS, the Purchaser desires to purchase from the Company shares of Common Stock, $0.001 par value per share ("Common
Stock"), of the Company in a private placement concurrently with the Company's initial public offering upon the terms and conditions set forth herein; and 

    WHEREAS,
the Company and the Purchaser wish to set forth the terms and conditions upon which the Company will issue and sell such shares to the Purchaser; 

    NOW,
THEREFORE, in consideration of the premises and mutual covenants and conditions contained herein, the Company and the Purchaser hereby agree as follows: 

 
 

ARTICLE I
  
    PURCHASE AND SALE OF SHARES    
  

    1.01  Purchase Price and Closing.  The Company will issue and sell to the Purchaser and, subject to the
terms and conditions of this Agreement, the Purchaser will purchase from the Company, an aggregate number of shares of Common Stock (the "Shares")
determined by dividing $2,000,000 by the per-share price to the public of shares of Common Stock in the Company's first underwritten, firm commitment public offering pursuant to an
effective registration under the Securities Act of 1933, as amended, in which the Company receives gross proceeds of not less than $20,000,000 ("IPO");
provided, however, the Purchaser, in its sole discretion, can determine whether to purchase the Shares in an offering in which the Company receives gross proceeds of less than $20,000,000. The
purchase and sale will take place at a closing (the "Closing") to be held on the date, at the location and at the time of closing of the IPO, subject to
the satisfaction of all of the conditions to the Closing specified in Article II herein. At the Closing the Company will issue and deliver a certificate evidencing the Shares to the Purchaser
against payment of the full purchase price therefor by wire transfer of immediately available funds to an account designated by the Company. 

    1.02  Restrictions on Transfer.  The Purchaser shall execute and deliver to J.P. Morgan & Co. a
lock-up agreement in substantially the form attached hereto as Exhibit A, and the Purchaser further represents that it understands
and agrees that all certificates evidencing any of the Shares, whether upon initial issuance or upon any transfer thereof, shall bear a legend until the expiration of such lock-up
agreement, prominently stamped or printed thereon, reading substantially as follows: 

"THE
SECURITIES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN J.P. MORGAN & CO. AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE
WITH THE SECRETARY OF THE COMPANY." 

    1.03  Representations and Warranties by the Purchaser.  The Purchaser represents and warrants to the
Company that (a) it is an "accredited investor" as defined in Rule 501(a) under the Securities Act of 1933, as amended; (b) it will acquire the Shares for its own account, for the
purpose of investment and not with a view to distribution or resale thereof; (c) the execution of this Agreement and the
consummation of the transactions contemplated hereby have been duly authorized by all necessary action on the part of the Purchaser, and this Agreement has been duly executed and delivered, and
constitutes a valid, legal, binding and enforceable agreement of the Purchaser, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general
application affecting enforcement of creditors' rights generally and (ii) as limited by laws relating to the availability 

 

of specific performance, injunctive relief or other equitable remedies; (d) it has taken no action which would give rise to any claim by any other person for any brokerage commissions, finders'
fees or the like relating to this Agreement or the transactions contemplated hereby; (e) it has had the opportunity to ask questions of and receive answers from representatives of the Company
concerning the terms of the offering of the Shares and to obtain additional information concerning the Company and its business; and (f) it has received and reviewed the registration statement
on Form S-1 (Registration No. 333-50266) filed by the Company with the Securities and Exchange Commission
("Commission") on November 20, 2000, and all amendments thereto (collectively, the "Registration
Statement"), which shall also include the prospectus related to such public offering (the "Prospectus"), and has all of the
information necessary for it to evaluate the merits and risks of an investment in the Shares and can bear the economic risks of such investment. The acquisition by the Purchaser of the Shares shall
constitute a confirmation of the representations and warranties made by the Purchaser as at the date of such acquisition. The Purchaser further represents that it understands and agrees that, until
registered under the Securities Act or transferred pursuant to the provisions of Rule 144 as promulgated by the Commission, all certificates evidencing any of the Shares, whether upon initial
issuance or upon any transfer thereof, shall bear a legend, prominently stamped or printed thereon, reading substantially as follows: 

"THE
SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THESE SECURITIES MAY NOT BE SOLD, MORTGAGED,
PLEDGED, HYPOTHECATED OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT FOR SUCH SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND APPLICABLE STATE SECURITIES LAWS, OR
THE AVAILABILITY OF AN EXEMPTION FROM THE REGISTRATION PROVISIONS OF THE SECURITIES ACT OF 1933, AS AMENDED, AND APPLICABLE STATE SECURITIES LAWS." 

 
 

ARTICLE II
  
    CONDITIONS TO CLOSING    
  

    2.01  Conditions of the Purchaser's Obligation.  The obligation of the Purchaser to purchase and pay for
the Shares at the Closing is subject to the satisfaction of the following conditions: 

    (a)  Documentation at Closing.  The Purchaser shall have received prior to or at the Closing all of the
following documents or instruments, or evidence of completion thereof, each in form and substance satisfactory to the Purchaser: 

     (i) A
copy of the Certificate of Incorporation of the Company, certified by the Secretary of State of the State of Delaware, a copy of the resolutions of the Board of
Directors of the Company evidencing the approval of this Agreement, the issuance of the Shares and the other matters contemplated hereby, and a copy of the Bylaws of the Company, all of which shall
have been certified by the Secretary of the Company to be true, complete and correct in every particular, and certified copies of all documents evidencing other necessary corporate or other action and
governmental approvals, if any, with respect to this Agreement and the Shares. 

    (ii) A
certificate of the Secretary of the Company which shall certify the names of the officers of the Company authorized to sign this Agreement, the certificate for
the Shares and the other documents, instruments or certificates to be delivered pursuant to this Agreement by the Company or any of its officers, together with the true signatures of such officers.
The Purchaser may conclusively rely on such certificate until it shall receive a further certificate of the Secretary or an Assistant Secretary of the Company canceling or amending the prior
certificate and submitting the signatures of the officers named in such further certificate. 

2

 

    (iii) A certificate of the President of the Company stating that all covenants and conditions required to be performed prior to or at the Closing have been performed as
of the Closing and that all the representations and warranties contained in Section 3 herein are true and correct as of the Closing. 

    (iv) Certificates
of Good Standing and Existence for the Company from the Secretaries of State of the States of Delaware and Washington, as the case may be. 

    (b)  Performance.  The Company shall have performed and complied with all agreements, obligations and
conditions contained in this Agreement that are required to be performed or complied with by it on or before the Closing. 

    (c)  Consents, Waivers, Etc.  The Company shall have obtained all consents or waivers, if any, necessary
to execute and deliver this Agreement, issue the Shares and to carry out the transactions contemplated hereby and thereby. All corporate and other action and governmental filings necessary to
effectuate the terms of this Agreement, the Shares and other agreements and instruments executed and delivered by the Company in connection herewith shall have been made or taken, except for any
post-sale filing that may be required under federal or state securities laws. In addition to the documents set forth above, the Company shall have provided to the Purchaser any other
information or copies of documents that it may reasonably request. 

    (d)  Investors' Rights Agreement.  The Company's Amended and Restated Investors' Rights Agreement dated
as of December 22, 1999 (the "Rights Agreement") shall have been amended to include the Purchaser as a party such that the Purchaser is entitled
to registration pursuant to Section 1.3 of the Rights Agreement with respect to the Shares as though the Purchaser were a Holder (as defined in the Rights Agreement) and the Shares were
Registrable Securities (as defined in the Rights Agreement) for the purposes of registration pursuant to Section 1.3, and provisions related thereto, of the Rights Agreement. 

    2.02  Conditions of the Company's Obligation.  The obligation of the Company to sell the Shares at the
Closing is subject to the satisfaction of the following conditions: 

    (a)  Completed IPO.  The closing of the IPO shall have occurred within 120 days of the date
hereof. 

    (b)  Consents, Waivers, Etc.  The Company shall have obtained all consents or waivers, if any, necessary
to execute and deliver this Agreement, issue the Shares and to carry out the transactions contemplated hereby and thereby. All corporate and other action and governmental filings necessary to
effectuate the terms of this Agreement, the Shares and other agreements and instruments executed and delivered by the Company in connection herewith shall have been made or taken, except for any
post-sale filing that may be required under federal or state securities laws. 

 
 

ARTICLE III
  
    REPRESENTATIONS AND WARRANTIES OF THE COMPANY    
  

    The Company hereby represents and warrants to the Purchaser as follows: 

    3.01  Corporate Action.  The Company has all necessary corporate power and has taken all corporate action
required to enter into and perform this Agreement and any other agreements and instruments executed in connection herewith (collectively, the "Financing
Documents"). The Financing Documents are valid and legally binding obligations of the Company, enforceable in accordance with their terms. The issuance, sale and delivery of
the Shares in accordance with this Agreement, have been duly authorized by all necessary corporate action on the part of the Company. The issuance of the Shares is not subject to preemptive rights or
other preferential rights in any present stockholders of the Company that have not been waived and will not conflict with any provision of any agreement or 

3

 

instrument to which the Company is a party or by which it or its property is bound and to which the Company has not obtained appropriate waivers. 

    3.02  No Conflict.  The execution and delivery of this Agreement by the Company does not, and the
consummation of the transactions contemplated hereby will not, conflict with, or result in any material violation of, or default under (with or without notice or lapse of time, or both), or give rise
to a right of termination, cancellation, modification or acceleration of any obligation under (i) any provision of the Certificate of Incorporation of the Company or Bylaws of the Company,
(ii) any mortgage, indenture, lease, contract or other agreement or instrument, permit, concession or license to which the Company or any of its properties or assets is subject or
(iii) any judgment, order, decree, applicable to the Company or its properties or assets. 

    3.03  Status of Shares.  The Shares, when issued and delivered in accordance with the terms hereof and
after payment of the purchase price therefor, will be duly authorized, validly issued, fully-paid and non-assessable, issued in compliance with applicable state and federal
securities laws and free of restrictions on transfer other than restrictions on transfer under this Agreement and applicable state and federal securities laws. 

    3.04  Organization, Good Standing and Qualification.  The Company is a corporation duly organized and
validly existing under the laws of the jurisdiction of its incorporation and has all requisite corporate power and authority to carry on its business. The Company is duly qualified to transact
business and is in good standing in each jurisdiction in which the failure so to qualify would have a material adverse effect on its business or properties. 

    3.05  Capitalization.  The capitalization of the Company set forth in the Registration Statement is, and
as of the effective date of the Registration Statement will be, accurate in all material respects. All of the outstanding shares of capital stock of the Company have been duly authorized and validly
issued, are fully paid and non-assessable and are not subject to any pre-emptive or similar rights. 

    3.06  Registration Statement.  No stop order suspending the effectiveness of the Registration Statement
has been issued and no proceeding for that purpose has been instituted or, to the knowledge of the Company, threatened by the Commission; the Registration Statement and the Prospectus (as amended or
supplemented if the Company shall have furnished any amendments or supplements thereto) comply, or will comply, as the case may be, in all material respects with the Securities Act and do not and will
not, as of the applicable effective date as to the Registration Statement and any amendment thereto and as of the date of the Prospectus and any amendment or supplement thereto, contain any untrue
statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, and the Prospectus, as amended or
supplemented, at the Closing, if applicable, as the case may be, will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading, except that the foregoing representations and warranties shall not apply to any statements or omissions in the Registration
Statement or the Prospectus made in reliance upon and in conformity with information relating to any underwriter furnished to the Company in writing by such underwriter expressly for use therein. 

    3.07  Environmental Laws.  The Company (i) is in compliance with any and all applicable foreign,
federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants
(collectively, "Environmental Laws"), (ii) has received all permits, licenses or other approvals required of it under applicable Environmental
Laws to conduct its businesses and (iii) is in compliance with all terms and conditions of any such permit, license or approval, except where such noncompliance with Environmental Laws, failure
to receive required permits, licenses or other approvals or failure to comply with the terms and conditions of such permits, licenses or approvals would not, individually or in the aggregate,
reasonably be expected to have a material adverse effect on the general affairs, 

4

 

business, prospects, management, financial position, stockholders' equity or results of operations of the Company, (a "Material Adverse Effect"). 

    3.08  Material Changes.  Since the respective dates as of which information is given in the Registration
Statement and the Prospectus, there has not been any change in the capital stock (except for the exercise of stock options or the issuance of shares pursuant to the Company's employee stock plan) or
long-term debt of the Company, or any material adverse change, or any development that would reasonably be expected to cause a prospective material adverse change, in or affecting the
general affairs, business, prospects, management, financial position, stockholders' equity or results of operations
of the Company, (a "Material Adverse Change"), otherwise than as set forth or contemplated in the Prospectus; and except as set forth or contemplated in
the Registration Statement and the Prospectus, the Company has not entered into any transaction or agreement (whether or not in the ordinary course of business) material to the Company. 

    3.09  Property.  The Company has good and marketable title in fee simple to all items of real property
and good and marketable title to all personal property owned by it, in each case free and clear of all liens, encumbrances and defects except such as are described or referred to in the Registration
Statement and the Prospectus or such as do not materially affect the value of such property and do not interfere with the use made or proposed to be made of such property by the Company; and any real
property and buildings held under lease by the Company are held by them under valid, existing and enforceable leases with such exceptions as are not material and do not interfere with the use made or
proposed to be made of such property and buildings by the Company. 

    3.10  Intellectual Property.  Except as described in the Registration Statement and the Prospectus, the
Company owns, is licensed to use or otherwise possesses adequate rights to use the patents, patent rights, licenses, inventions, trademarks, service marks, trade names, copyrights and
know-how, including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems, processes or procedures (collectively, the
"Intellectual Property"), reasonably necessary to carry on the business conducted by it, except to the extent that the failure to own, be licensed to
use or otherwise possess adequate rights to use such Intellectual Property would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect; the Company has not
received any notice of infringement of or conflict with, and the Company has no knowledge of any infringement of or conflict with, asserted rights of others with respect to its Intellectual Property
which would, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect; the discoveries, inventions, products or processes of the Company referred to in the
Registration Statement and the Prospectus do not, to the knowledge of the Company, infringe or conflict with any right or patent of any third party, or any discovery, invention, product or process
which is the subject of a patent application filed by any third party which patent application has been published or is otherwise known to the Company which could, individually or in the aggregate,
reasonably be expected to result in a Material Adverse Effect; except as set forth in the Registration Statement and the Prospectus, the Company is not obligated to pay a royalty, grant a license or
provide other consideration to any third party in connection with its patents, patent rights, licenses, inventions, trademarks, service marks, trade names, copyrights and know-how which
could, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect; and no third party, including any academic or governmental organization, possesses rights to the
Intellectual Property which, if exercised, could reasonably be expected to have a Material Adverse Effect. 

    3.11  Governmental Permits.  Except as described in the Registration Statement and the Prospectus, the
Company owns, possesses or has obtained all licenses, permits, certificates, consents, orders, approvals and other authorizations from, and has made all declarations and filings with, all federal,
state, local and other governmental authorities (including foreign regulatory agencies), all self-regulatory
organizations and all courts and other tribunals, domestic or foreign, necessary to own or lease, as the case may be, and to operate its properties and to carry on its business as conducted as 

5

 

of the date hereof, except where the failure to own, possess, obtain or make would not, individually or in the aggregate, have a Material Adverse Effect, and the Company has not received any actual
notice of any proceeding relating to revocation or modification of any such license, permit, certificate, consent, order, approval or other authorization, except as described in the Registration
Statement and the Prospectus, and the Company is in compliance with all laws and regulations relating to the conduct of its business as conducted as of the date hereof, and all of the descriptions in
the Registration Statement and the Prospectus of the legal and governmental procedures and requirements of the United States Food and Drug Administration (the
"FDA") or any foreign, state or local governmental body exercising comparable authority are accurate in all material respects. 

 
 

ARTICLE IV
  
    OTHER AGREEMENTS    
  

    4.01  Publicity.  The parties agree to issue a joint press release announcing this Agreement and the
transactions contemplated hereby following execution of this Agreement. Any proposed announcement, press release or other public disclosure concerning this Agreement and/or any of the transactions or
relationships contemplated hereby shall be mutually approved by both parties (which approval shall not be unreasonably withheld). The Purchaser agrees and acknowledges that this Agreement and the
transactions contemplated hereby shall be disclosed in the Registration Statement and filed as an exhibit to the next amendment to the Registration Statement following execution hereof. 

 
 

ARTICLE V
  
    MISCELLANEOUS    
  

    5.01  No Waiver.  No failure or delay on the part of any party to this Agreement in exercising any right,
power or remedy hereunder shall operate as a waiver thereof; nor shall any single or partial exercise of any such right, power or remedy preclude any other or further exercise thereof or the exercise
of any other right, power or remedy hereunder. 

    5.02  Amendments, Waivers and Consents.  Any provision in this Agreement to the contrary notwithstanding,
and except as hereinafter provided, changes in or additions to this Agreement may be made, and compliance with any covenant or provision set forth herein may be omitted or waived, if the party
requesting such change, addition, omission or waiver shall obtain consent thereto in writing from the other party. Any waiver or consent may be given subject to satisfaction of conditions stated
therein and any waiver or consent shall be effective only in the specific instance and for the specific purpose for which given. 

    5.03  Addresses for Notices.  All notices, requests, demands and other communications provided for
hereunder shall be in writing and mailed, faxed or delivered to each applicable party at the address set forth below or at such other address as to which such party may inform the other parties in
writing in compliance with the terms of this Section. 

If
to the Purchaser:  Medarex, Inc., 707 State Road, Suite 206, Princeton, NJ 08540-1437, Attention General Counsel, with a copy to: Medarex, Inc., 707 State
Road, Suite 206, Princeton, NJ 08540-1437 Attention Chief Financial Officer; or at such other address as shall be designated by the Purchaser in a written notice to the Company complying
as to delivery with the terms hereof. 

If
to the Company:  Seattle Genetics, Inc, 22215 26th Avenue SE, Suite 3000, Bothell, WA 98021, Attention: Tim Carroll, with a copy to: Venture Law Group, 4750 Carillon
Point, Kirkland, WA 98033, Attention: Sonya F. Erickson; or at such other address as shall be designated by the Company in a written notice to the Purchaser complying as to delivery with the terms
hereof. 

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All such notices, requests, demands and other communications shall, when mailed (which mailing must be accomplished by first class mail, postage prepaid; express overnight courier service; or
registered mail, return receipt requested) or transmitted by facsimile, be effective three days after deposited in the mails or upon transmission by facsimile, respectively, addressed as aforesaid,
unless otherwise provided herein. 

    5.04  Binding Effect; Assignment.  This Agreement shall be binding upon and inure to the benefit of the
Company and the Purchaser and their respective heirs, successors and assigns, except that the Purchaser shall not have the right to assign its rights hereunder or any interest herein without the prior
written consent of the Company. 

    5.05  Entire Agreement.  This Agreement and the documents referred to herein constitute the entire
agreement between the parties and supersedes any prior understandings or agreements concerning the subject matter hereof. 

    5.06  Severability.  The provisions of this Agreement are severable and, in the event that any court of
competent jurisdiction shall determine that any one or more of the provisions or part of a provision contained in this Agreement shall, for any reason, be held to be invalid, illegal or unenforceable
in any respect, such invalidity, illegality or unenforceability shall not affect any other provision or part of a provision of this Agreement. 

    5.07  Governing Law.  This Agreement shall be governed by and construed in accordance with the internal
laws of the State of Washington without regard to its conflicts of laws principles to the contrary. 

    5.08  Headings.  Article, Section and subsection headings in this Agreement are included herein for
convenience of reference only and shall not constitute a part of this Agreement for any other purpose. 

    5.09  Counterparts.  This Agreement may be executed in counterparts, each of which shall be enforceable
against the party actually executing the counterpart, and all of which together shall constitute one instrument. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

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    IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the date first above written. 

	 	 	SEATTLE GENETICS, INC.
	

 	
 	

By:	
 	

/s/ H. PERRY FELL   
 Name: H. PERRY FELL

Title: CHIEF EXECUTIVE OFFICER
	

 	
 	
MEDAREX, INC.
	

 	
 	

By:	
 	

/s/ RONALD A. PEPIN   
 Name: RONALD A. PEPIN

Title: VICE PRESIDENT, BUSINESS

        DEVELOPMENT

8

 
 
 

Exhibit A
  
    LOCK-UP AGREEMENT    

                ,
2001 

J.P.
MORGAN SECURITIES INC.

CIBC WORLD MARKETS CORP.

BANC OF AMERICA SECURITIES LLC 

As
Representatives of the several

Underwriters to be named in Schedule I to

the Underwriting Agreement referred to below 

c/o
J.P. Morgan Securities Inc.

60 Wall Street

New York, New York 10260 

Re:  Seattle
Genetics, Inc.—

        Initial Public Offering of Common Stock

Ladies
and Gentlemen: 

    The
undersigned understands that you, as Representatives of the several Underwriters, propose to enter into an Underwriting Agreement (the "Underwriting
Agreement") with Seattle Genetics, Inc., a Delaware corporation (the "Company"), providing for the public offering (the
"Public Offering") by the several Underwriters to be named in Schedule I to the Underwriting Agreement (the
"Underwriters") of Common Stock, $0.001 par value, of the Company (the "Common Stock"). 

    In
consideration of the Underwriters' agreement to purchase and make the Public Offering of Common Stock, and for other good and valuable consideration receipt of which is hereby
acknowledged, the undersigned hereby agrees that, without the prior written consent of J.P. Morgan Securities Inc. on behalf of the Underwriters, the undersigned will not, directly or
indirectly, during the period beginning on the date hereof and ending 180 days after the date of the prospectus relating to the Public Offering (the
"Prospectus"), (1) offer, pledge, announce the intention to sell, sell, contract to sell, sell any option or contract to purchase, purchase any
option or contract to sell, grant any option, right or warrant to purchase, or otherwise transfer or dispose of any shares of Common Stock or any securities of the Company which are substantially
similar to the Common Stock, including but not limited to any securities convertible into or exercisable or exchangeable for, or that represent the right to receive, Common Stock (including, but not
limited to, Common Stock which may be deemed to be beneficially owned by the undersigned in accordance with the rules and regulations of the Securities and Exchange Commission and securities which may
be issued upon exercise of a stock option or warrant) (collectively, the "Company Securities") or (2) enter into any swap, option, future,
forward or other agreement that transfers, in whole or in part, any of the economic consequences of ownership of the Company Securities, regardless of whether any of the transactions described in
clause (1) or (2) above is to be settled by delivery of Company Securities, in cash or otherwise. In addition, the undersigned agrees that, without the prior written consent of J.P.
Morgan Securities Inc. on behalf of the Underwriters, it will not, during the period ending 180 days after the date of the Prospectus, make any demand for, or exercise any right with
respect to, the registration of any Company Securities. 

    Notwithstanding
the foregoing, the undersigned may transfer the undersigned's Company Securities (i) as a bona fide gift or
gifts, provided that the donee or donees thereof agree in writing with J.P. Morgan Securities Inc. to be bound by the restrictions set forth herein or (ii) pursuant to a transfer, either
during the undersigned's lifetime or upon death by will or intestacy, to the undersigned's immediate family or to any trust for the direct or indirect benefit of the undersigned or the immediate
family of the undersigned, provided that any such transferees agree in writing with J.P. Morgan 

9

 

Securities Inc. to be bound by the restrictions set forth herein, and provided further that any such transfer shall not involve a disposition for value. In addition, if the undersigned is a
corporation, the corporation may transfer Company Securities to any wholly-owned subsidiary of such corporation; and, if the undersigned is a partnership, the partnership may transfer Company
Securities to a partner of such partnership or a retired partner of such partnership who retires after the date hereof, or to the estate of any such partner or retired partner, and any such partner
who is an individual may transfer shares of capital stock, either during such partner's lifetime or upon death by will or intestacy, to his or her immediate family or to any trust for the direct or
indirect benefit of such partner or such partner's immediate family; provided that any such transferees agree in writing with J.P. Morgan Securities Inc. to be bound by the restrictions set
forth herein, and provided further that any such transfer shall not involve a disposition for value. For the purposes of this paragraph, "immediate family" shall mean any relationship by blood,
marriage or adoption, not more remote than first cousin. 

    None
of the restrictions set forth in this Lock-Up Agreement shall apply to Company Securities acquired in open market transactions after the Public Offering or Company
Securities acquired in the Public Offering (including Company Securities acquired in any directed share program related to the Public Offering). 

    In
furtherance of the foregoing, the Company and any duly appointed transfer agent for the registration or transfer of the securities described herein are hereby authorized to decline
to make any transfer of securities if such transfer would constitute a violation or breach of this Lock-Up Agreement. 

    The
undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Agreement. All authority herein conferred or
agreed to be conferred and any obligations of the undersigned shall be binding upon the successors, assigns, heirs or personal representatives of the undersigned. 

    The
undersigned understands that, if the Underwriting Agreement does not become effective by April 30, 2001, or if the Underwriting Agreement (other than the provisions thereof
which survive termination) shall terminate or be terminated prior to payment for and delivery of the Common Stock
to be sold thereunder, the undersigned shall be released from all obligations under this Lock-Up Agreement. 

    The
undersigned recognizes that the Public Offering will be of benefit to the undersigned and will benefit the Company by, among other things, raising capital for its operations. The
undersigned understands that the Underwriters are entering into the Underwriting Agreement and proceeding with the Public Offering in reliance upon this Lock-Up Agreement. 

    THIS
LOCK-UP AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE CONFLICT OF LAWS PRINCIPLES THEREOF. 

10

 

	 	 	Very truly yours,
	

 	
 	

 
	 	 	
 Name:

Title:

Accepted
as of the date first set forth above: 

J.P.
MORGAN SECURITIES INC.

CIBC WORLD MARKETS CORP.

BANC OF AMERICA SECURITIES LLC 

Acting
severally on behalf of themselves and the

several Underwriters to be named in Schedule I

to the Underwriting Agreement 

	By:	 	J.P. MORGAN SECURITIES INC.	 	 
	

By:	
 	

 	
 	

 
	 	 	
 Name:

Title:	 	 

11

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SEATTLE GENETICS, INC. Common Stock Purchase Agreement

RECITALS

ARTICLE I PURCHASE AND SALE OF SHARES

ARTICLE II CONDITIONS TO CLOSING

ARTICLE III REPRESENTATIONS AND WARRANTIES OF THE COMPANY

ARTICLE IV OTHER AGREEMENTS

ARTICLE V MISCELLANEOUS

Exhibit A LOCK-UP AGREEMENT<PAGE>

                                                                     EXHIBIT 4.4

                          REGISTRATION RIGHTS AGREEMENT

     REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of February
5, 2001, between STAR Telecommunications, Inc., a Delaware corporation (the
"Company"), and Gotel Investments Ltd., a British Virgin Islands corporation
(the "Investor").

     WHEREAS:

     A. In connection with the Purchase Agreement by and among the parties
hereto of even date herewith (the "Purchase Agreement"), the Company has agreed,
upon the terms and subject to the conditions contained therein, to issue and
sell to the Investor, Warrants to purchase up to $35,000,000 of its common stock
(the "Common Stock"), par value $0.01 per share (the "Shares"), upon the terms
and conditions and subject to the limitations and conditions set forth in the
Warrants of even date herewith; and

     B. To induce the Investor to execute and deliver the Purchase Agreement,
the Company has agreed to provide certain registration rights under the
Securities Act of 1933, as amended, and the rules and regulations thereunder, or
any similar successor statute (collectively, the "Securities Act"), and
applicable state securities laws;

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company and the Investor
hereby agree as follows:

     1.   DEFINITIONS.

          (a)  As used in this Agreement, the following terms shall have the
following meanings:

               (i)  "Investors" means the Investor.

               (ii) "register," "registered," and "registration" refer to a
registration effected by preparing and filing a Registration Statement or
Statements in compliance with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering securities on a
continuous basis ("Rule 415"), and the declaration or ordering of effectiveness
of such Registration Statement by the United States Securities and Exchange
Commission (the "SEC").

               (iii) "Registrable Securities" shall mean the Warrant Shares (as
defined in the Purchase Agreement) and any other shares of capital stock issued
or issuable as a dividend on or in exchange for or otherwise with respect to the
Warrant Shares until (i) the Registration Statement has been declared effective
by the SEC and all such shares have been disposed of pursuant to the
Registration Statement, (ii) all such shares have been sold under circumstances
under which

<PAGE>

all of the applicable conditions of Rule 144 promulgated under the Securities
Act (or any similar provision then in force) ("Rule 144") are met, (iii) all
such shares have been otherwise transferred to holders who may trade such shares
without restriction under the Securities Act, and the Company has delivered a
new certificate or other evidence of ownership for such securities not bearing a
restrictive legend, (iv) such time as, in the opinion of counsel to the
Investor, all such shares may be sold without any time, volume or manner
limitations pursuant to Rule 144(k) (or any similar provision then in effect)
under the Securities Act or (v) any combination of the foregoing relating to all
such shares.

               (iv) "Registration Statement(s)" shall mean a registration
statement on Form S-1 for the registration of the resale by the Investor of the
Registrable Securities under the Securities Act.

          (b) Capitalized terms used herein and not otherwise defined herein
shall have the respective meanings set forth in the Purchase Agreement.

     2.   REGISTRATION.

          (a) MANDATORY REGISTRATION. The Company shall prepare, and, on or
prior to the date which is forty-five (45) days after the date of this
Agreement, file (the "Filing Date") with the SEC a Registration Statement
covering the resale of the Registrable Securities, which Registration Statement,
to the extent allowable under the Securities Act and the rules and regulations
promulgated thereunder (including Rule 416), shall state that such Registration
Statement also covers such indeterminate number of additional shares of Common
Stock as may become issuable with respect to the Warrant Shares. The number of
shares of Common Stock initially included in such Registration Statement shall
be no less than the aggregate number of Warrant Shares that are issuable upon
the exercise of, or otherwise pursuant to, the Warrants, provided that such
number of shares of Common Stock shall not exceed 20 million unless and until
the Company stockholders have increased the authorized number of shares of
Common Stock at the next regularly scheduled annual meeting of such
stockholders. The Registration Statement (and each amendment or supplement
thereto, and each request for acceleration of effectiveness thereof) shall be
provided to and subject to the approval of the Investor and its counsel prior to
its filing or other submission. The Company shall provide the Investor and its
counsel with a copy of the Registration Statement and any pre- or post-effective
amendment thereto not less than two (2) business days prior to the intended
filing date and shall provide copies of any supplements not less than one (1)
business day prior to the intended filing date.

          (b) UNDERWRITTEN OFFERING. If any offering pursuant to a Registration
Statement pursuant to Section 2(a) hereof involves an underwritten offering, the
Investor shall have the right to select one legal counsel and an investment
banker or bankers and manager or managers to administer the offering, which
investment banker or bankers or manager or managers shall be reasonably
satisfactory to the Company.

                                       2
<PAGE>

     3.   OBLIGATIONS OF THE COMPANY. In connection with the registration of the
Registrable Securities, the Company shall have the following obligations:

          (a) The Company shall prepare promptly, and file with the SEC as soon
as practicable after the Closing Date, a Registration Statement with respect to
the number of Registrable Securities provided in Section 2(a), and thereafter
use its best efforts to cause such Registration Statement relating to
Registrable Securities to become effective as soon as possible after such
filing, and keep the Registration Statement effective pursuant to Rule 415 at
all times until such date as such shares are no longer considered Registrable
Securities pursuant to the definition of such term set forth in Section 1(a)(ii)
hereof (such period being referred to as the "Registration Period"), which
Registration Statement (including any amendments or supplements thereto and
prospectuses contained therein) shall not contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein, or
necessary to make the statements therein not misleading.

          (b) The Company shall prepare and file with the SEC such amendments
(including post-effective amendments) and supplements to the Registration
Statements and the prospectus used in connection with the Registration
Statements as may be necessary to keep the Registration Statements effective at
all times during the Registration Period, and, during such period, comply with
the provisions of the Securities Act with respect to the disposition of all
Registrable Securities of the Company covered by the Registration Statements
until such time as all of such Registrable Securities have been disposed of in
accordance with the intended methods of disposition by the seller or sellers
thereof as set forth in the Registration Statements. In the event that the
number of shares available under a Registration Statement filed pursuant to this
Agreement is insufficient to cover all of the Registrable Securities issued or
issuable upon exercise of, or otherwise pursuant to, the Warrants without giving
effect to any limitations on the Investor's ability to exercise the Warrants
(the "Registration Trigger Date"), the Company shall amend the Registration
Statement, or file a new Registration Statement (on the short form available
therefore, if applicable), or both, so as to cover all of the Registrable
Securities so issued or issuable (without giving effect to any limitations on
exercise contained in the Warrants, if applicable) as of the Registration
Trigger Date, in each case, as soon as practicable, but in any event within
twenty (20) business days after the necessity therefor arises (based on the
market price of the Common Stock and other relevant factors on which the Company
reasonably elects to rely). The Company shall use its best efforts to cause such
amendment and/or new Registration Statement to become effective as soon as
practicable following the filing thereof.

          (c) On or before the date of any exercise of any Warrant, the Company
shall prepare and file with the SEC a supplement to the Registration Statement,
in form and substance agreed upon by the parties, regarding the exercise price
and number of Warrant Shares acquired, the number of shares sold to the Investor
in connection with all the current as well as previous purchases, if not
previously disclosed in an SEC Document (as defined in the Purchase Agreement),
and any additional information required by SEC rules and regulations, including
Item 507 of Regulation S-K.

                                       3
<PAGE>

          (d) The Company shall furnish to each Investor whose Registrable
Securities are included in a Registration Statement and its legal counsel (i)
promptly after the same is prepared and publicly distributed, filed with the
SEC, or received by the Company, one copy of each Registration Statement and any
amendment thereto, each preliminary prospectus and prospectus and each amendment
or supplement thereto, and, in the case of the Registration Statement referred
to in Section 2(a), each letter written by or on behalf of the Company to the
SEC or the staff of the SEC, and each item of correspondence from the SEC or the
staff of the SEC, in each case relating to such Registration Statement (other
than any portion of any thereof which contains information for which the Company
has sought confidential treatment), and (ii) such number of copies of a
prospectus, including a preliminary prospectus, and all amendments and
supplements thereto and such other documents as such Investor may reasonably
request in order to facilitate the disposition of the Registrable Securities
owned by such Investor. The Company will immediately notify each Investor by
facsimile of the effectiveness of each Registration Statement or any
post-effective amendment. The Company will promptly respond to any and all
comments received from the SEC, with a view towards causing each Registration
Statement or any amendment thereto to be declared effective by the SEC as soon
as practicable and shall file an acceleration request as soon as practicable
following the resolution or clearance of all SEC comments or, if applicable,
following notification by the SEC that any such Registration Statement or any
amendment thereto will not be subject to review.

          (e) The Company shall use reasonable efforts to (i) register and
qualify the Registrable Securities covered by the Registration Statements under
such other securities or "blue sky" laws of such jurisdictions in the United
States as the Investors who hold a majority in interest of the Registrable
Securities being offered reasonably request, (ii) prepare and file in those
jurisdictions such amendments (including post-effective amendments) and
supplements to such registrations and qualifications as may be necessary to
maintain the effectiveness thereof during the Registration Period, (iii) take
such other actions as may be necessary to maintain such registrations and
qualifications in effect at all times during the Registration Period, and (iv)
take all other actions reasonably necessary or advisable to qualify the
Registrable Securities for sale in such jurisdictions; provided, however, that
the Company shall not be required in connection therewith or as a condition
thereto to (a) qualify to do business in any jurisdiction where it would not
otherwise be required to qualify but for this Section 3(e), (b) subject itself
to general taxation in any such jurisdiction, (c) file a general consent to
service of process in any such jurisdiction, (d) provide any undertakings that
cause the Company undue expense or burden, or (e) make any change in its charter
or bylaws, which in each case the Board of Directors of the Company determines
to be contrary to the best interests of the Company and its stockholders.

          (f) In the event Investors who hold a majority-in-interest of the
Registrable Securities being offered in the offering (with the approval of the
Investor) select underwriters for the offering, the Company shall enter into and
perform its obligations under an underwriting agreement, in usual and customary
form, including, without limitation, customary indemnification and contribution
obligations, with the underwriters of such offering.

                                       4
<PAGE>

          (g) The Company will immediately notify each Investor upon the
occurrence of any of the following events in respect of the Registration
Statement or related prospectus in respect of the resale of the Registrable
Securities: (i) receipt of any request for additional information from the SEC
or any other federal or state governmental authority during the period of
effectiveness of the Registration Statement, the response to which would require
any amendments or supplements to the Registration Statement or related
prospectus; (ii) the issuance by the SEC or any other federal or state
governmental authority of any stop order suspending the effectiveness of the
Registration Statement or the initiation of any proceedings for that purpose;
(iii) receipt of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Securities for sale
in any jurisdiction or the initiation or threatening of any proceeding for such
purpose; and (iv) the happening of any event that makes any statement made in
the Registration Statement or related prospectus or any document incorporated or
deemed to be incorporated therein by reference untrue in any material respect or
that requires the making of any changes in the Registration Statement, related
prospectus or documents so that, in the case of the Registration Statement, it
will not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading, and that in the case of the related prospectus, it will
not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading; provided, however that prior to the disclosure by the Company of any
material non-public information to the Investors or their advisors or
representatives pursuant to this Section 3(g) or any other provisions of this
Agreement, the Company shall identify such information as being material
non-public information and shall provide the Investors with the opportunity to
accept or refuse to accept such material non-public information.

          (h) As promptly as practicable after becoming aware of an event
specified in Section 3(g)(iv) of this Agreement, the Company shall use its best
efforts promptly to prepare a supplement or amendment to any Registration
Statement to correct such untrue statement or omission, and deliver such number
of copies of such supplement or amendment to each Investor as such Investor may
reasonably request; provided that, for not more than sixty (60) consecutive
Trading Days (or a total of not more than ninety (90) Trading Days in any six
(6) month period), the Company may delay the disclosure of material non-public
information concerning the Company (as well as prospectus or Registration
Statement updating) the disclosure of which at the time is not, in the good
faith opinion of the Company, in the best interests of the Company (an "Allowed
Delay"); provided, further, that the Company shall promptly (i) notify the
Investors in writing of the existence of (but in no event, without the prior
written consent of an Investor, shall the Company disclose to such Investor any
of the facts or circumstances regarding) material non-public information giving
rise to an Allowed Delay and (ii) advise the Investors in writing to cease all
sales under such Registration Statement until the end of the Allowed Delay. Upon
expiration of the Allowed Delay, the Company shall again be bound by Section
3(g) and the first sentence of this Section 3(h) with respect to the information
giving rise thereto. In the event that the Investors consent to receipt of
material non-public information pursuant to the second proviso contained in the
first sentence of this Section 3(h), the Investors hereby agree to keep such
information confidential until the earlier of

                                       5
<PAGE>

(i) the date when such information is publicly disclosed by the Company and (ii)
the date which is twenty-one (21) Trading Days after the beginning of the period
constituting such Allowed Delay.

          (i) The Company shall use its best efforts to prevent the issuance of
any stop order or other suspension of effectiveness of any Registration
Statement, and, if such an order is issued, to obtain the withdrawal of such
order at the earliest possible moment and to notify each Investor who holds
Registrable Securities being sold (or, in the event of an underwritten offering,
the managing underwriters) of the issuance of such order and the resolution
thereof.

          (j) The Company shall permit a single firm of counsel designated by
the Investor to review such Registration Statement and all amendments and
supplements thereto (as well as all requests for acceleration or effectiveness
thereof and any correspondence between the Company and the SEC relating to the
Registration Statement) a reasonable period of time (as specified in Section
2(a) above) prior to their filing with the SEC, and not file any document (nor
send any correspondence) in a form to which such counsel reasonably objects and
will not request acceleration of such Registration Statement without prior
notice to such counsel. The sections of such Registration Statement covering
information with respect to the Investors, the Investor's beneficial ownership
of securities of the Company or the Investors intended method of disposition of
Registrable Securities shall conform to the information provided to the Company
by each of the Investors.

          (k) The Company shall make generally available to its security holders
as soon as practicable, but not later than ninety (90) days after the close of
the period covered thereby, an earnings statement (in form complying with the
provisions of Rule 158 under the Securities Act) covering a twelve-month period
beginning not later than the first day of the Company's fiscal quarter next
following the effective date of the Registration Statement.

          (l) Subject to the provisions of the Purchase Agreement, the Company
shall make available for inspection by (i) any Investor, (ii) any underwriter
participating in any disposition pursuant to a Registration Statement, (iii) one
firm of attorneys and one firm of accountants or other agents retained by the
Investor, and (iv) one firm of attorneys retained by all such underwriters
(collectively, the "Inspectors") all pertinent financial and other records, and
pertinent corporate documents and properties of the Company (collectively, the
"Records"), as shall be reasonably deemed necessary by each Inspector to enable
each Inspector to exercise its due diligence responsibility, and cause the
Company's officers, directors and employees to supply all information which any
Inspector may reasonably request for purposes of such due diligence; provided,
however, that, subject to the provisions of the Purchase Agreement, each
Inspector shall hold in confidence and shall not make any disclosure (except to
an Investor) of any Record or other information which the Company determines in
good faith to be confidential, and of which determination the Inspectors are so
notified, unless (a) the release of such Records is ordered pursuant to a
subpoena or other order from a court or government body of competent
jurisdiction or (b) the information in such Records has been made generally
available to the public other than by disclosure in violation of this

                                       6
<PAGE>

or any other agreement. Nothing herein (or in any other confidentiality
agreement between the Company and any Investor) shall be deemed to limit the
Investor's ability to sell Registrable Securities in a manner which is otherwise
consistent with applicable laws and regulations.

          (m) The Company shall (i) cause all the Registrable Securities covered
by the Registration Statement to be listed on each national securities exchange
on which securities of the same class or series issued by the Company are then
listed, if any, if the listing of such Registrable Securities is then permitted
under the rules of such exchange, or (ii) to the extent the securities of the
same class or series are not then listed on a national securities exchange,
secure the designation and quotation of all the Registrable Securities covered
by the Registration Statement on Nasdaq or, if not eligible for Nasdaq on the
Nasdaq SmallCap and, without limiting the generality of the foregoing, to
arrange for at least two market makers to register with the National Association
of Securities Dealers, Inc. ("NASD") as such with respect to such Registrable
Securities.

          (n) The Company shall provide a transfer agent and registrar, which
may be a single entity, for the Registrable Securities not later than the
effective date of the Registration Statement.

          (o) The Company shall cooperate with the Investors who hold
Registrable Securities being offered and the managing underwriter or
underwriters, if any, to facilitate the timely preparation and delivery of
certificates (not bearing any restrictive legends) representing Registrable
Securities to be offered pursuant to such Registration Statement and enable such
certificates to be in such denominations or amounts, as the case may be, as the
managing underwriter or underwriters, if any, or the Investors may reasonably
request and registered in such names as the managing underwriter or
underwriters, if any, or the Investors may request.

          (p) At the request of the holders of a majority-in-interest of the
Registrable Securities, the Company shall prepare and file with the SEC such
amendments (including post-effective amendments) and supplements to a
Registration Statement and any prospectus used in connection with the
Registration Statement as may be necessary in order to change the plan of
distribution set forth in such Registration Statement.

          (q) The Company shall not, and shall not agree to, allow the holders
of any securities of the Company to include any of their securities in any
Registration Statement under Section 2(a) hereof or any amendment or supplement
thereto under Section 3(b) hereof without the consent of the holders of a
majority-in-interest of the Registrable Securities. In addition, the Company
shall not offer any securities for its own account or the account of others in
any Registration Statement under Section 2(a) hereof or any amendment or
supplement thereto under Section 3(b) hereof without the consent of the holders
of a majority-in-interest of the Registrable Securities.

                                       7
<PAGE>

          (r) The Company shall take all other reasonable actions necessary to
expedite and facilitate disposition by the Investors of Registrable Securities
pursuant to a Registration Statement.

          (s) The Company shall comply with all applicable laws related to a
Registration Statement and offering and sale of securities and all applicable
rules and regulations of governmental authorities in connection therewith
(including without limitation the Securities Act and the Exchange Act and the
rules and regulations promulgated by the SEC).

     4.   OBLIGATIONS OF INVESTORS. In connection with the registration of the
Registrable Securities, the Investors shall have the following obligations:

          (a) It shall be a condition precedent to the obligations of the
Company to complete the registration pursuant to this Agreement with respect to
the Registrable Securities of a particular Investor that such Investor shall
furnish to the Company such information regarding itself, the Registrable
Securities held by it and the intended method of disposition of the Registrable
Securities held by it as shall be reasonably required to effect the registration
of such Registrable Securities and shall execute such documents in connection
with such registration as the Company may reasonably request. At least seven (7)
business days prior to the first anticipated filing date of the Registration
Statement, the Company shall notify each Investor of the information the Company
requires from each such Investor.

          (b) Each Investor, by such Investor's acceptance of the Registrable
Securities, agrees to cooperate with the Company as reasonably requested by the
Company in connection with the preparation and filing of the Registration
Statements hereunder, unless such Investor has notified the Company in writing
of such Investor's election to exclude all of such Investor's Registrable
Securities from the Registration Statements.

          (c) Each Investor agrees that, upon receipt of any notice from the
Company of the happening of any event of the kind described in Sections 3(g) or
3(i), such Investor will immediately discontinue disposition of Registrable
Securities pursuant to the Registration Statement covering such Registrable
Securities until such Investor's receipt of the copies of the supplemented or
amended prospectus contemplated by Sections 3(g) or 3(i) and, if so directed by
the Company, such Investor shall deliver to the Company (at the expense of the
Company) or destroy (and deliver to the Company a certificate of destruction)
all copies in such Investor's possession, of the prospectus covering such
Registrable Securities current at the time of receipt of such notice.

          (d) No Investor may participate in any underwritten registration
hereunder unless such Investor (i) agrees to sell such Investor's Registrable
Securities on the basis provided in any underwriting arrangements in usual and
customary form entered into by the Company, (ii) completes and executes all
questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents reasonably required under the terms of such underwriting
arrangements, and (iii) agrees

                                       8
<PAGE>

to pay its pro rata share of all underwriting discounts and commissions and any
expenses in excess of those payable by the Company pursuant to Section 5 below.

          (e) Each Investor shall comply with all applicable laws relating to
the sale of Registrable Securities (including without limitation, the Securities
Act and the Exchange Act and the rules and regulations promulgated by the SEC).

     5.   EXPENSES OF REGISTRATION. All reasonable expenses, other than
underwriting discounts and commissions, incurred in connection with
registrations, filings or qualifications pursuant to Sections 2 and 3,
including, without limitation, all registration, listing and qualification fees,
printers and accounting fees, the fees and disbursements of counsel for the
Company shall be borne by the Company.

     6.   INDEMNIFICATION. In the event any Registrable Securities are included
in a Registration Statement under this Agreement:

          (a) To the extent permitted by law, the Company will indemnify, hold
harmless and defend (i) each Investor who holds such Registrable Securities,
(ii) the directors, officers, partners, employees, agents and each person who
controls any Investor within the meaning of the Securities Act or the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), if any, (iii) any
underwriter (as defined in the Securities Act) for the Investors, and (iv) the
directors, officers, partners, employees and each person who controls any such
underwriter within the meaning of the Securities Act or the Exchange Act, if any
(each, an "Indemnified Person"), against any joint or several losses, claims,
damages, liabilities or expenses (collectively, together with actions,
proceedings or inquiries by any regulatory or self-regulatory organization,
whether commenced or threatened, in respect thereof, "Claims") to which any of
them may become subject insofar as such Claims arise out of or are based upon:
(i) any untrue statement or alleged untrue statement of a material fact in a
Registration Statement or the omission or alleged omission to state therein a
material fact required to be stated or necessary to make the statements therein
not misleading; (ii) any untrue statement or alleged untrue statement of a
material fact contained in any preliminary prospectus if used prior to the
effective date of such Registration Statement, or contained in the final
prospectus (as amended or supplemented, if the Company files any amendment
thereof or supplement thereto with the SEC) or the omission or alleged omission
to state therein any material fact necessary to make the statements made
therein, in light of the circumstances under which the statements therein were
made, not misleading; or (iii) any violation or alleged violation by the Company
of the Securities Act, the Exchange Act, any other law, including, without
limitation, any state securities law, or any rule or regulation thereunder
relating to the offer or sale of the Registrable Securities (the matters in the
foregoing clauses (i) through (iii) being, collectively, "Violations"). Subject
to the restrictions set forth in Section 6(c) with respect to the number of
legal counsel, the Company shall reimburse the Indemnified Person, promptly as
such expenses are incurred and are due and payable, for any reasonable legal
fees or other reasonable expenses incurred by them in connection with
investigating or defending any such Claim. Notwithstanding anything to the
contrary contained herein, the indemnification agreement contained in this
Section 6(a): (i) shall not

                                       9
<PAGE>

apply to a Claim arising out of or based upon a Violation which occurs in
reliance upon and in conformity with information furnished in writing to the
Company by any Indemnified Person or underwriter for such Indemnified Person
expressly for use in connection with the preparation of such Registration
Statement or any such amendment thereof or supplement thereto; (ii) shall not
apply to amounts paid in settlement of any Claim if such settlement is effected
without the prior written consent of the Company, which consent shall not be
unreasonably withheld; and (iii) with respect to any preliminary prospectus,
shall not inure to the benefit of any Indemnified Person if the untrue statement
or omission of material fact contained in the preliminary prospectus was
corrected on a timely basis in the prospectus, as then amended or supplemented,
such corrected prospectus was timely made available by the Company pursuant to
Section 3(d) hereof, and the Indemnified Person was promptly advised in writing
not to use the incorrect prospectus prior to the use giving rise to a Violation
and such Indemnified Person, notwithstanding such advice, used it. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of the Indemnified Person and shall survive the transfer of
the Registrable Securities by the Investors pursuant to Section 9.

          (b) In connection with any Registration Statement in which an Investor
is participating, such Investor agrees severally and not jointly to indemnify,
hold harmless and defend, to the same extent and in the same manner set forth in
Section 6(a), the Company, each of its directors, each of its officers who signs
the Registration Statement, each person, if any, who controls the Company within
the meaning of the Securities Act or the Exchange Act, any underwriter and any
other stockholder selling securities pursuant to the Registration Statement or
any of its directors or officers or any person who controls such stockholder or
underwriter within the meaning of the Securities Act or the Exchange Act
(collectively and together with an Indemnified Person, an "Indemnified Party"),
against any Claim to which any of them may become subject, under the Securities
Act, the Exchange Act or otherwise, insofar as such Claim arises out of or is
based upon any Violation by such Investor, in the case of Violations described
in clauses (i) or (ii) of Section (a) to the extent (and only to the extent)
that such Violation occurs in reliance upon and in conformity with written
information furnished to the Company by such Investor expressly for use in
connection with such Registration Statement; and subject to Section 6(c) such
Investor will reimburse any legal or other expenses (promptly as such expenses
are incurred and are due and payable) reasonably incurred by them in connection
with investigating or defending any such Claim; provided, however, that the
indemnity agreement contained in this Section 6(b) shall not apply to amounts
paid in settlement of any Claim if such settlement is effected without the prior
written consent of such Investor, which consent shall not be unreasonably
withheld; provided, further, however, that the Investor shall be liable under
this Agreement (including this Section 6(b) and Section 7) for only that amount
as does not exceed the net proceeds to such Investor as a result of the sale of
Registrable Securities pursuant to such Registration Statement. Such indemnity
shall remain in full force and effect regardless of any investigation made by or
on behalf of such Indemnified Party. Notwithstanding anything to the contrary
contained herein, the indemnification agreement contained in this Section 6(b)
with respect to any preliminary prospectus shall not inure to the benefit of any
Indemnified Party if the untrue statement or omission of material fact contained

                                       10
<PAGE>

in the preliminary prospectus was corrected on a timely basis in the prospectus,
as then amended or supplemented.

          (c) Promptly after receipt by an Indemnified Person or Indemnified
Party under this Section 6 of notice of the commencement of any action
(including any governmental action), such Indemnified Person or Indemnified
Party shall, if a Claim in respect thereof is to be made against any
indemnifying party under this Section 6, deliver to the indemnifying party a
written notice of the commencement thereof, and the indemnifying party shall
have the right to participate in, and, to the extent the indemnifying party so
desires, jointly with any other indemnifying party similarly noticed, to assume
control of the defense thereof with counsel mutually satisfactory to the
indemnifying party and the Indemnified Person or the Indemnified Party, as the
case may be; provided, however, that an Indemnified Person or Indemnified Party
shall have the right to retain its own counsel with the fees and expenses to be
paid by the indemnifying party, if, in the reasonable opinion of counsel
retained by the indemnifying party, the representation by such counsel of the
Indemnified Person or Indemnified Party and the indemnifying party would be
inappropriate due to actual or potential differing interests between such
Indemnified Person or Indemnified Party and any other party represented by such
counsel in such proceeding. The indemnifying party shall pay for only one
separate legal counsel for the Indemnified Persons or the Indemnified Parties,
as applicable, and such legal counsel shall be selected by Investors holding a
majority-in-interest of the Registrable Securities included in the Registration
Statement to which the Claim relates (with the approval of a
majority-in-interest of the Investor), if the Investors are entitled to
indemnification hereunder, or the Company, if the Company is entitled to
indemnification hereunder, as applicable. The failure to deliver written notice
to the indemnifying party within a reasonable time of the commencement of any
such action shall not relieve such indemnifying party of any liability to the
Indemnified Person or Indemnified Party under this Section 6, except to the
extent that the indemnifying party is actually prejudiced in its ability to
defend such action. The indemnification required by this Section 6 shall be made
by periodic payments of the amount thereof during the course of the
investigation or defense, as such expense, loss, damage or liability is incurred
and is due and payable.

     7.   CONTRIBUTION. To the extent any indemnification by an indemnifying
party is prohibited or limited by law, the indemnifying party agrees to make the
maximum contribution with respect to any amounts for which it would otherwise be
liable under Section 6 to the fullest extent permitted by law; provided,
however, that (i) no contribution shall be made under circumstances where the
maker would not have been liable for indemnification under the fault standards
set forth in Section 6, (ii) no seller of Registrable Securities guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any seller of Registrable
Securities who was not guilty of such fraudulent misrepresentation, and (iii)
contribution (together with any indemnification or other obligations under this
Agreement) by any seller of Registrable Securities shall be limited in amount to
the net amount of proceeds received by such seller from the sale of such
Registrable Securities.

                                       11
<PAGE>

     8.   REPORTS UNDER THE EXCHANGE ACT. With a view to making available to the
Investors the benefits of Rule 144 or any other similar rule or regulation of
the SEC that may at any time permit the investors to sell securities of the
Company to the public without registration, the Company agrees to:

          (a) make and keep public information available, as those terms are
understood and defined in Rule 144;

          (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act
so long as the Company remains subject to such requirements (it being understood
that nothing herein shall limit the Company's obligations under Section 5.3 of
the Purchase Agreement) and the filing of such reports and other documents is
required for the applicable provisions of Rule 144; and

          (c) furnish to each Investor so long as such Investor owns Registrable
Securities, promptly upon request, (i) a written statement by the Company that
it has complied with the reporting requirements of Rule 144, the Securities Act
and the Exchange Act, (ii) a copy of the most recent annual or quarterly report
of the Company and such other reports and documents so filed by the Company, and
(iii) such other information as may be reasonably requested to permit the
Investors to sell such securities pursuant to Rule 144 without registration.

     9.   AMENDMENT OF REGISTRATION RIGHTS. Provisions of this Agreement may be
amended and the observance thereof may be waived (either generally or in a
particular instance and either retroactively or prospectively), only with
written consent of the Company and the Investor (to the extent such Investor
still owns Registrable Securities). Any amendment or waiver effected in
accordance with this Section 9 shall be binding upon each Investor and the
Company.

     10.  MISCELLANEOUS.

          (a) A person or entity is deemed to be a holder of Registrable
Securities whenever such person or entity owns of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more persons or entities with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions,
notice or election received from the registered owner of such Registrable
Securities.

          (b) Any notices required or permitted to be given under the terms
hereof shall be sent by certified or registered mail (return receipt requested)
or delivered personally or by courier (including a recognized overnight delivery
service) or by facsimile and shall be effective five days after being placed in
the mail, if mailed by regular United States mail, or upon receipt, if delivered
personally or by courier (including a recognized overnight delivery service) or
by facsimile, in each case addressed to a party. The addresses for such
communications shall be:

                                       12
<PAGE>

                           If to the Company:

                                    STAR Telecommunications, Inc.
                                    223 East De La Guerra Street
                                    Santa Barbara, California 93101
                                    Attention:  Timothy F. Sylvester, Esq.
                                    Facsimile:  (805) 899-2972

                           With copy to:

                                    Riordan & McKinzie
                                    300 South Grand Avenue, 29th Floor
                                    Los Angeles, California 90071
                                    Attention:  Cynthia M. Dunnett, Esq.
                                    Facsimile:  (213) 830-8604

                           If to the Investor:

                                    c/o Barry Guterman, Esq.
                                    1874 Century Park East, 15th Floor
                                    Los Angeles, CA 90067
                                    Facsimile: 310/551-1565

          (c) Failure of any party to exercise any right or remedy under this
Agreement or otherwise, or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

          (d) This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware applicable to agreements made and to be
performed in the State of Delaware (without regard to principles of conflict of
laws). Both parties irrevocably consent to the exclusive jurisdiction of the
United States federal courts and the state courts located in Delaware with
respect to any suit or proceeding based on or arising under this Agreement, the
agreements entered into in connection herewith or the transactions contemplated
hereby or thereby and irrevocably agree that all claims in respect of such suit
or proceeding may be determined in such courts. Both parties irrevocably waive
the defense of an inconvenient forum to the maintenance of such suit or
proceeding. Both parties further agree that service of process upon a party
mailed by first class mail shall be deemed in every respect effective service of
process upon the party in any such suit or proceeding. Nothing herein shall
affect either party's right to serve process in any other manner permitted by
law. Both parties agree that a final non-appealable judgment in any such suit or
proceeding shall be conclusive and may be enforced in other jurisdictions by
suit on such judgment or in any other lawful manner.

                                       13
<PAGE>

          (e) This Agreement, the Purchase Agreement and the Warrants (including
all schedules and exhibits hereto or thereto) constitute the entire agreement
among the parties hereto with respect to the subject matter hereof and thereof.
There are no restrictions, promises, warranties or undertakings, other than
those set forth or referred to herein and therein. This Agreement, the Purchase
Agreement and the Warrants supersede all prior agreements and understandings
among the parties hereto with respect to the subject matter hereof and thereof.

          (f) Subject to the requirements of Section 9 hereof, this Agreement
shall inure to the benefit of and be binding upon the successors and assigns of
each of the parties hereto.

          (g) The headings in this Agreement are for convenience of reference
only and shall not limit or otherwise affect the meaning hereof.

          (h) This Agreement may be executed in two or more counterparts, each
of which shall be deemed an original but all of which shall constitute one and
the same agreement. This Agreement, once executed by a party, may be delivered
to the other party hereto by facsimile transmission of a copy of this Agreement
bearing the signature of the party so delivering this Agreement.

          (i) Each party shall do and perform, or cause to be done and
performed, all such further acts and things, and shall execute and deliver all
such other agreements, certificates, instruments and documents, as the other
party may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated
hereby.

          (j) Except as otherwise provided herein, all consents and other
determinations to be made by the Investors pursuant to this Agreement shall be
made by Investors holding a majority of the Registrable Securities.

          (k) The language used in this Agreement will be deemed to be the
language chosen by the parties to express their mutual intent, and no rules of
strict construction will be applied against any party.

          (l) In the event that any provision of this Agreement is invalid or
unenforceable under any applicable statute or rule of law, then such provision
shall be deemed inoperative to the extent that it may conflict therewith and
shall be deemed modified to conform with such statute or rule of law. Any
provision hereof which may prove invalid or unenforceable under any law shall
not affect the validity or enforceability of any other provision hereof.

          (m) The initial number of Registrable Securities included in any
Registration Statement and each increase to the number of Registrable Securities
included therein shall be allocated pro rata among the Investors based on the
number of Registrable Securities held by each Investor at the time of such
establishment or increase, as the case may be. In the event an Investor

                                       14
<PAGE>

shall sell or otherwise transfer any of such holder's Registrable Securities,
each transferee shall be allocated a pro rata portion of the number of
Registrable Securities included in a Registration Statement for such transferor.
Any shares of Common Stock included on a Registration Statement and which remain
allocated to any person or entity which does not hold any Registrable Securities
shall be allocated to the remaining Investors, pro rata based on the number of
shares of Registrable Securities then held by such Investors.

                [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                       15
<PAGE>

     IN WITNESS WHEREOF, the Company and the undersigned Investor have caused
this Agreement to be duly executed as of the date first above written.

                                       STAR TELECOMMUNICATIONS, INC.

                                       By:
                                           -------------------------------------
                                           Brett S. Messing
                                           Chairman and Chief Executive Officer

                                       GOTEL INVESTMENTS LTD.

                                       By:
                                           -------------------------------------
                                           Walter Stresemann
                                           Director

                                       16

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