1 EXHIBIT 10.75 NOTE THIS NOTE HAS NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) OR (B) IT IS AN INSTITUTIONAL "ACCREDITED INVESTOR" (AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT) ("INSTITUTIONAL ACCREDITED INVESTOR"); (2) AGREES THAT IT WILL NOT, PRIOR TO EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS NOTE UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), RESELL OR OTHERWISE TRANSFER THIS NOTE OR THE COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH NOTE EXCEPT (A) TO IMCLONE SYSTEMS INCORPORATED OR ANY SUBSIDIARY THEREOF, (B) INSIDE THE UNITED STATES TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) INSIDE THE UNITED STATES TO AN INSTITUTIONAL ACCREDITED INVESTOR THAT, PRIOR TO SUCH TRANSFER, FURNISHES TO THE BANK OF NEW YORK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE RESTRICTIONS ON TRANSFER OF THIS NOTE (THE FORM OF WHICH LETTER CAN BE OBTAINED FROM SUCH TRUSTEE OR A SUCCESSOR TRUSTEE, AS APPLICABLE), AND IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF NOTES OF LESS THAN $100,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT, (D) OUTSIDE THE UNITED STATES IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (E) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE) OR (F) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER); (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(F) ABOVE), IT WILL FURNISH TO THE BANK OF NEW YORK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT; AND (4) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS NOTE IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS NOTE PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS NOTE 2 UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE BANK OF NEW YORK AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE). IF THE PROPOSED TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR OR IS A PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO THE BANK OF NEW YORK, AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS SUCH TRUSTEE MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THIS LEGEND WILL BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THIS NOTE PURSUANT TO CLAUSE (2)(F) ABOVE OR UPON ANY TRANSFER OF THIS NOTE UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION). AS USED HEREIN, THE TERMS "UNITED STATES" AND "U.S. PERSON" HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE SECURITIES ACT. THE INDENTURE CONTAINS A PROVISION REQUIRING THE TRUSTEE TO REFUSE TO REGISTER ANY TRANSFER OF THIS NOTE IN VIOLATION OF THE FOREGOING RESTRICTION. 3 IMCLONE SYSTEMS INCORPORATED 5 1/2% CONVERTIBLE SUBORDINATED NOTE DUE 2005 CUSIP: 45245WAB5 No. P-1 ImClone Systems Incorporated, a corporation duly organized and validly existing under the laws of the State of Delaware (herein called the "Company", which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to Morgan Stanley & Co. Incorporated or its registered assigns, the principal sum of One Hundred Thousand Dollars ($100,000) on March 1, 2005, at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, in such coin or currency of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts, and to pay interest, semi-annually on March 1 and September 1 of each year, commencing September 1, 2000, on said principal sum at said office or agency, in like coin or currency, at the rate per annum of 5 1/2%, from March 1 or September 1, as the case may be, next preceding the date of this Note to which interest has been paid or duly provided for, unless the date hereof is a date to which interest has been paid or duly provided for, in which case from the date of this Note, or unless no interest has been paid or duly provided for on the Notes, in which case from February 29, 2000, until payment of said principal sum has been made or duly provided for. Notwithstanding the foregoing, if the date hereof is after any February 15 or August 15, as the case may be, and before the following March 1 or September 1, this Note shall bear interest from such March 1 or September 1; provided, however, that if the Company shall default in the payment of interest due on such March 1 or September 1, then this Note shall bear interest from the next preceding March 1 or September 1 to which interest has been paid or duly provided for or, if no interest has been paid or duly provided for on such Note, from February 29, 2000. Except as otherwise provided in the Indenture, the interest payable on the Note pursuant to the Indenture on any March 1 or September 1 will be paid to the Person entitled thereto as it appears in the Note register at the close of business on the record date, which shall be the February 15 or August 15 (whether or not a Business Day) next preceding such March 1 or September 1, as provided in the Indenture; provided, however, that any such interest not punctually paid or duly provided for shall be payable as provided in the Indenture. Interest may, at the option of the Company, be paid either (i) by check mailed to the registered address of such Person (provided that the holder of Notes with an aggregate principal amount in excess of $2,000,000 shall, at the written election of such holder, be paid by wire transfer of immediately available funds) or (ii) by transfer to an account maintained by such Person located in the United States; provided, however, that payments to the Depositary will be made by wire transfer of immediately available funds to the account of the Depositary or its nominee. Reference is made to the further provisions of this Note set forth on the reverse hereof, including, without limitation, provisions subordinating the payment of principal of and premium, 1 4 if any, and interest on the Notes to the prior payment in full of all Senior Indebtedness, as defined in the Indenture, and provisions giving the holder of this Note the right to convert this Note into Common Stock of the Company on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. This Note shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with and governed by the laws of the State of New York, without regard to principles of conflicts of laws. This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by the Trustee or a duly authorized authenticating agent under the Indenture. IN WITNESS WHEREOF, the Company has caused this Note to be duly executed. IMCLONE SYSTEMS INCORPORATED By: /s/ Samuel D. Waksal ------------------------- Name: Samuel D. Waksal ------------------------- Title: President & CEO --------------------------- Attest: /s/ Carl S. Goldfischer ------------------------ Name: Carl S. Goldfischer ------------------------ Title: Vice President, Finance & CEO ----------------------------- Dated: February 29, 2000 ----------------------------- 2 5 TRUSTEE'S CERTIFICATE OF AUTHENTICATION This is one of the Notes described in the within-named Indenture. THE BANK OF NEW YORK, as Trustee By: /s/ Robert A. Massimillo ------------------------ Authorized Signatory 3 6 IMCLONE SYSTEMS INCORPORATED 5 1/2% CONVERTIBLE SUBORDINATED NOTE DUE 2005 This Note is one of a duly authorized issue of Notes of the Company, designated as its 5 1/2% Convertible Subordinated Notes due 2005 (herein called the "Notes"), limited to the aggregate principal amount of $200,000,000 ($240,000,000, if the option is fully exercised by the Initial Purchasers) all issued or to be issued under and pursuant to an Indenture dated as of February 29, 2000 (herein called the "Indenture"), between the Company and The Bank of New York, as trustee (herein called the "Trustee"), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the holders of the Notes. In case an Event of Default (as defined in the Indenture) shall have occurred and be continuing, the principal of, premium, if any, and accrued interest (including Liquidated Damages (as defined in the Registration Rights Agreement), if any) on all Notes may be declared by either the Trustee or the holders of not less than 25% in aggregate principal amount of the Notes then outstanding, and upon said declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture. The Indenture contains provisions permitting the Company and the Trustee, with the consent of the holders of not less than a majority in aggregate principal amount of the Notes at the time outstanding, to execute supplemental indentures adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture or of any supplemental indenture or modifying in any manner the rights of the holders of the Notes; provided, however, that no such supplemental indenture shall (i) extend the fixed maturity of any Note, or reduce the rate or extend the time of payment of interest thereon, or reduce the principal amount thereof or premium, if any, thereon, or reduce any amount payable upon redemption thereof, or impair the right of any Noteholder to institute suit for the payment thereof, or make the principal thereof or interest or premium, if any, thereon payable in any coin or currency other than that provided in the Notes, or modify the provisions of the Indenture with respect to the subordination of the Notes in a manner adverse to the Noteholders in any material respect, or change the obligation of the Company to redeem any Note upon the happening of a Fundamental Change (as defined in the Indenture) in a manner adverse to the holder of the Notes, or impair the right to convert the Notes into Common Stock subject to the terms set forth in the Indenture, including Section 15.6 thereof, without the consent of the holder of each Note so affected or (ii) reduce the aforesaid percentage of Notes, the holders of which are required to consent to any such supplemental indenture, without the consent of the holders of all Notes then outstanding. Subject to the provisions of the Indenture, the holders of a majority in aggregate principal amount of the Notes at the time outstanding may on behalf of the holders of all of the Notes waive any past default or Event of Default under the Indenture and its consequences except a default in the payment of interest (including Liquidated Damages, if any) or any premium on, or the principal of, any of the Notes, or a failure by the Company to convert any Notes into Common Stock of the Company, or 4 7 a default in the payment of the redemption price pursuant to Article Three of the Indenture, or a default in respect of a covenant or provisions of the Indenture which under Article Eleven of the Indenture cannot be modified without the consent of the holders of each or all Notes then outstanding or affected thereby. Any such consent or waiver by the holder of this Note (unless revoked as provided in the Indenture) shall be conclusive and binding upon such holder and upon all future holders and owners of this Note and any Notes which may be issued in exchange or substitution hereof, irrespective of whether or not any notation thereof is made upon this Note or such other Notes. The indebtedness evidenced by the Notes is, to the extent and in the manner provided in the Indenture, expressly subordinated and subject in right of payment to the prior payment in full of all Senior Indebtedness of the Company, whether outstanding at the date of the Indenture or thereafter incurred, and this Note is issued subject to the provisions of the Indenture with respect to such subordination. Each holder of this Note, by accepting the same, agrees to and shall be bound by such provisions and authorizes the Trustee on its behalf to take such action as may be necessary or appropriate to effectuate the subordination so provided and appoints the Trustee his attorney-in-fact for such purpose. No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest (including Liquidated Damages, if any) on this Note at the place, at the respective times, at the rate and in the coin or currency herein prescribed. Interest on the Notes shall be computed on the basis of a 360-day year of twelve 30-day months. The Notes are issuable in fully registered form, without coupons, in denominations of $1,000 principal amount and any integral multiple of $1,000. At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, without payment of any service charge but with payment of a sum sufficient to cover any tax, assessment or other governmental charge that may be imposed in connection with any registration or exchange of Notes, Notes may be exchanged for a like aggregate principal amount of Notes of any other authorized denominations. The Notes may be provisionally redeemed by the Company, in whole or in part, at any time prior to March 6, 2003, at a redemption price equal to $1,000 per aggregate principal amount of notes to be redeemed plus accrued and unpaid interest, if any (including Liquidated Damages Amount, if any) to the date of redemption if (i) the closing price of the Common Stock shall have exceeded 150% of the conversion price then in effect for at least 20 trading days in any consecutive 30-trading day period and (ii) if the redemption would occur before March 1, 2002, the shelf registration statement covering resales of the Notes and the Common Stock, issuable upon conversion of the Notes, is effective and available for use and is expected to remain effective and available for use for the 30 days immediately following the date of 5 8 redemption. The Company shall mail notice of any provisional redemption within five trading days of a consecutive 30-trading day period. Upon any such provisional redemption, the Company shall make an additional Additional Payment (as defined in the Indenture) with respect to the Notes called for redemption to holders as of the date of mailing of the notice of provisional redemption in an amount equal to $152.54 per $1,000 Note, minus the amount of any interest the Company actually paid on such Note prior to the Notice Date. The Company shall make the Additional Payment on all Notes called for provisional redemption, including any Notes converted after the date of mailing of the notice of provisional redemption and prior to the date of redemption. At any time on or after March 6, 2003, and prior to maturity, the Notes may be redeemed at the option of the Company, in whole or in part, upon mailing a notice of such redemption not less than 30 days but not more than 60 days before the date fixed for redemption to the holders of Notes at their last registered addresses, all as provided in the Indenture, at the following optional redemption prices (expressed as percentages of the principal amount), together in each case with accrued and unpaid interest (including Liquidated Damages, if any) to, but excluding, the date fixed for redemption: Period Redemption Price Beginning on March 6, 2003 and ending on February 29, 2004 102.20% Beginning on March 1, 2004 and ending on February 28, 2005 110.10% and 100% on March 1, 2005; provided, however, that if the date fixed for redemption is on a March 1 or September 1, then the interest payable on such date shall be paid to the holder of record on the preceding February 15 or August 15, respectively. The Company may not redeem the Notes if a default in the payment of interest or premium, if any, on the Notes has occurred and is continuing. The Notes are not subject to redemption through the operation of any sinking fund. If a Fundamental Change occurs at any time prior to maturity of the Notes, the Notes will be redeemable on the 30th day after notice thereof (the "Repurchase Date") at the option of the holder of the Notes at a redemption price equal to 100% of the principal amount thereof, together with accrued interest to (but excluding) the date of redemption; provided, however, that, if such Repurchase Date is a March 1 or September 1, the interest payable on such date shall be paid to the holder of record of the Notes on the preceding February 15 or August 15, respectively. The Notes will be redeemable in multiples of $1,000 principal amount. The Company shall mail to all holders of record of the Notes a notice of the occurrence of a Fundamental Change and of the redemption right arising as a result thereof on or before the 10th day after the occurrence of such 6 9 Fundamental Change. For a Note to be so redeemed at the option of the holder, the Company must receive at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, such Note with the form entitled "Option to Elect Repayment Upon a Fundamental Change" on the reverse thereof duly completed, together with such Note, duly endorsed for transfer, on or before the 30th day after the date of such notice of a Fundamental Change (or if such 30th day is not a Business Day, the immediately succeeding Business Day). Subject to the provisions of the Indenture, the holder hereof has the right, at its option, at any time after the original issuance of any Notes through the close of business on the final maturity date of the Notes, or, as to all or any portion hereof called for redemption, prior to the close of business on the Business Day immediately preceding the date fixed for redemption (unless the Company shall default in payment due upon redemption thereof), to convert the principal hereof or any portion of such principal which is $1,000 or an integral multiple thereof into that number of shares of the Company"s Common Stock (as such shares shall be constituted at the date of conversion) obtained by dividing the principal amount of this Note or portion thereof to be converted by the Conversion Price of $110.18, as may adjusted from time to time as provided in the Indenture, upon surrender of this Note, together with a conversion notice as provided in the Indenture (the form entitled "Conversion Notice" on the reverse hereof), to the Company at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, or at the option of such holder, the Corporate Trust Office, and, unless the shares issuable on conversion are to be issued in the same name as this Note, duly endorsed by, or accompanied by instruments of transfer in form satisfactory to the Company duly executed by, the holder or by his duly authorized attorney. No adjustment in respect of interest on any Note converted or dividends on any shares issued upon conversion of such Note will be made upon any conversion except as set forth in the next sentence. If this Note (or portion hereof) is surrendered for conversion during the period from the close of business on any record date for the payment of interest to the close of business on the Business Day preceding the following interest payment date and either (x) has not been called for redemption on a redemption date that occurs during such period or (y) is not to be redeemed in connection with a Fundamental Change on a Repurchase Date that occurs during such period, this Note (or portion hereof being converted) must be accompanied by an amount, in New York Clearing House funds or other funds acceptable to the Company, equal to the interest payable on such interest payment date on the principal amount being converted; provided, however, that no such payment shall be required if there shall exist at the time of conversion a default in the payment of interest on the Notes. No fractional shares will be issued upon any conversion, but an adjustment and payment in cash will be made, as provided in the Indenture, in respect of any fraction of a share which would otherwise be issuable upon the surrender of any Note or Notes for conversion. A Note in respect of which a holder is exercising its right to require redemption upon a Fundamental Change may be converted only if such holder withdraws its election to exercise such right in accordance with the terms of the Indenture. Any Notes called for redemption, unless surrendered for conversion by the holders thereof on or before the close of business on the Business Day preceding the date fixed for redemption, may be deemed to be redeemed from the holders of such Notes for an amount equal to the applicable redemption price, together with accrued but unpaid interest 7 10 (including Liquidated Damages, if any) to (but excluding) the date fixed for redemption, by one or more investment banks or other purchasers who may agree with the Company (i) to purchase such Notes from the holders thereof and convert them into shares of the Company"s Common Stock and (ii) to make payment for such Notes as aforesaid to the Trustee in trust for the holders. Upon due presentment for registration of transfer of this Note at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, a new Note or Notes of authorized denominations for an equal aggregate principal amount will be issued to the transferee in exchange thereof; subject to the limitations provided in the Indenture, without charge except for any tax, assessment or other governmental charge imposed in connection therewith. The Company, the Trustee, any authenticating agent, any paying agent, any conversion agent and any Note registrar may deem and treat the registered holder hereof as the absolute owner of this Note (whether or not this Note shall be overdue and notwithstanding any notation of ownership or other writing hereon made by anyone other than the Company or any Note registrar) for the purpose of receiving payment hereof, or on account hereof, for the conversion hereof and for all other purposes, and neither the Company nor the Trustee nor any other authenticating agent nor any paying agent nor other conversion agent nor any Note registrar shall be affected by any notice to the contrary. All payments made to or upon the order of such registered holder shall, to the extent of the sum or sums paid, satisfy and discharge liability for monies payable on this Note. No recourse for the payment of the principal of or any premium or interest on this Note, or for any claim based hereon or otherwise in respect hereof, and no recourse under or upon any obligation, covenant or agreement of the Company in the Indenture or any supplemental indenture or in any Note, or because of the creation of any indebtedness represented thereby, shall be had against any incorporator, stockholder, employee, agent, officer or director or subsidiary, as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law or by the enforcement of any assessment or penalty or otherwise, all such liability being, by acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released. This Note shall be deemed to be a contract made under the laws of New York, and for all purposes shall be construed in accordance with the laws of New York, without regard to principles of conflicts of laws. Terms used in this Note and defined in the Indenture are used herein as therein defined. 8 11 ABBREVIATIONS The following abbreviations, when used in the inscription of the face of this Note, shall be construed as though they were written out in full according to applicable laws or regulations. - -------------------------------------------------------------------------------- TEN COM- as tenants in common UNIF GIFT MIN ACT -- ____________________ Custodian (Cust) ____________________ (Minor) - -------------------------------------------------------------------------------- TEN ENT- as tenants by the entireties - -------------------------------------------------------------------------------- JT TEN- as joint tenants with right of under Uniform Gifts to Minors Act survivorship and not as tenants in common ____________________ (State) - -------------------------------------------------------------------------------- ADDITIONAL ABBREVIATIONS MAY ALSO BE USED THOUGH NOT IN THE ABOVE LIST. A-1 12 CONVERSION NOTICE TO: IMCLONE SYSTEMS INCORPORATED THE BANK OF NEW YORK The undersigned registered owner of this Note hereby irrevocably exercises the option to convert this Note, or the portion thereof (which is $1,000 or an integral multiple thereof) below designated, into shares of Common Stock of ImClone Systems Incorporated in accordance with the terms of the Indenture referred to in this Note, and directs that the shares issuable and deliverable upon such conversion, together with any check in payment for fractional shares and any Notes representing any unconverted principal amount hereof, be issued and delivered to the registered holder hereof unless a different name has been indicated below. If shares or any portion of this Note not converted are to be issued in the name of a person other than the undersigned, the undersigned will provide the appropriate information below and pay all transfer taxes payable with respect thereto. Any amount required to be paid by the undersigned on account of interest accompanies this Note. Dated: ___________________ ___________________________________ ___________________________________ Signature(s) Signature(s) must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Note registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Note registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. ___________________________________ Signature Guarantee B-1 13 Fill in the registration of shares of Common Stock if to be issued, and Notes if to be delivered, other than to and in the name of the registered holder: - ---------------------------------------- (Name) - ---------------------------------------- (Street Address) - ---------------------------------------- (City, State and Zip Code) - ---------------------------------------- Please print name and address Principal amount to be converted (if less than all): $ ---------------------------------------- Social Security or Other Taxpayer Identification Number: - ---------------------------------------- B-2 14 OPTION TO ELECT REPAYMENT UPON A FUNDAMENTAL CHANGE TO: IMCLONE SYSTEMS INCORPORATED THE BANK OF NEW YORK The undersigned registered owner of this Note hereby irrevocably acknowledges receipt of a notice from ImClone Systems Incorporated (the "Company") as to the occurrence of a Fundamental Change with respect to the Company and requests and instructs the Company to repay the entire principal amount of this Note, or the portion thereof (which is $1,000 or an integral multiple thereof) below designated, in accordance with the terms of the Indenture referred to in this Note at the price of 100% of such entire principal amount or portion thereof, together with accrued interest to, but excluding, such repayment date, to the registered holder hereof. Dated: ___________________ ___________________________________ ___________________________________ Signature(s) NOTICE: The above signatures of the holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever. Principal amount to be repaid (if less than all): $ _____________________________ _______________________________ Social Security or Other Taxpayer Identification Number C-1 15 ASSIGNMENT For value received __________________________________________ hereby sell(s) assign(s) and transfer(s) unto ____________________________________ (Please insert social security or other Taxpayer Identification Number of assignee) the within Note, and hereby irrevocably constitutes and appoints ____________________________________ attorney to transfer said Note on the books of the Company, with full power of substitution in the premises. In connection with any transfer of the Note prior to the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision) (other than any transfer pursuant to a registration statement that has been declared effective under the Securities Act), the undersigned confirms that such Note is being transferred: / / To ImClone Systems Incorporated or a subsidiary thereof; or / / Inside the United States pursuant to and in compliance with Rule 144A under the Securities Act of 1933, as amended; or / / Inside the United States to an Institutional Accredited Investor pursuant to and in compliance with the Securities Act of 1933, as amended, in a minimum denomination of $100,000; or / / Outside the United States in compliance with Rule 904 under the Securities Act; or / / Pursuant to and in compliance with Rule 144 under the Securities Act of 1933, as amended; and unless the box below is checked, the undersigned confirms that such Note is not being transferred to an "affiliate" of the Company as defined in Rule 144 under the Securities Act of 1933, as amended (an "Affiliate"). / / The transferee is an Affiliate of the Company. Dated: ___________________ D-1 16 ___________________________________ ___________________________________ Signature(s) Signature(s) must be guaranteed by an "eligible guarantor institution" meeting the requirements of the Note registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program ("STAMP") or such other "signature guarantee program" as may be determined by the Note registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. ___________________________________ Signature Guarantee NOTICE: The signature of the conversion notice, the option to elect repayment upon a Fundamental Change or the assignment must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever. D-2