Document:

Stock Purchase Warrant to Geduld Capital Management LLC

 Exhibit 10.5 
  
 EX-10.5 STOCK PURCHASE WARRANT to Geduld Capital Management LLC 
  
 THE SECURITIES REPRESENTED BY THIS CERTIFICATE, AND THE SECURITIES ISSUED UPON EXERCISE HEREOF, MAY NOT BE OFFERED FOR SALE, SOLD OR
OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT FILED UNDER THE SECURITIES ACT OF 1933 (THE “ACT”), OR PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE ACT WHICH SHALL BE ESTABLISHED TO THE SATISFACTION OF
THE COMPANY. 
  
 Void after 3:30 P.M., Denver Time, on November 18,
2007 
  

	
	Warrant to Purchase
	219,298 Shares
	of Common Stock

  
 WARRANT TO
PURCHASE SHARES OF COMMON STOCK 
  
 OF 
  
 RENTECH, INC. 
  
 This Is to Certify That, FOR VALUE RECEIVED, GEDULD CAPITAL MANAGEMENT LLC, a limited liability company organized under the
laws of the state of Florida, or permitted assigns (“Holder”), is entitled to purchase, subject to the provisions of this Warrant, from RENTECH, INC., a Colorado corporation (“Company”), at any time not later than 3:30 P.M.,
Denver time, on November 18, 2007, (the “Expiration Date”) Two Hundred Nineteen Thousand Two Hundred Ninety-Eight (219,298) shares of common stock, having $0.01 par value per share, of the Company (“Common Stock”) at an exercise
price, subject to adjustment as set forth below, of $1.14 per share. The number of shares of Common Stock to be received upon the exercise of this Warrant and the price to be paid for a share of Common Stock are subject to adjustment from time to
time as hereinafter set forth. The shares of the Common Stock deliverable upon such exercise, and as adjusted from time to time, are hereinafter sometimes referred to as “Warrant Stock” and the exercise price of a share of Common Stock in
effect at any time and as adjusted from time to time is hereinafter sometimes referred to as the “Exercise Price.” 
  
 1. Exercise of Warrant. Subject to the provisions of Section 4 hereof, this Warrant may be exercised in whole or in part at any time or from time
to time not later than 3:30 P.M., Denver Time, on November 18, 2007, or if that date falls on a day on which banking institutions are authorized by law to close, then on the next succeeding day which shall not be such a day, by presentation and
surrender hereof to the Company with the Purchase Form annexed hereto duly executed and accompanied by payment of the Exercise Price for the number of shares specified in such form, together with all federal and state taxes applicable upon such
exercise. If this Warrant should be exercised in part only, the Company shall, upon surrender of this Warrant for cancellation, execute and deliver a new Warrant evidencing the right of the Holder to purchase the balance of the shares purchasable
hereunder. Upon receipt by the Company of this Warrant at the office or agency of the Company, in proper form for exercise, the Holder shall be deemed to be the holder of record of the shares of Common Stock issuable upon such exercise,
notwithstanding that the stock transfer books of the Company shall then be closed or that certificates representing such securities shall not then be actually delivered to the Holder. The Exercise Price shall be paid in immediately available funds
by cashier’s check or by wire transfer. 
  
 2. Reservation
of Shares. The Company hereby agrees that at all times there shall be reserved for issuance and delivery, upon exercise of this Warrant, such number of shares of its Common Stock as shall be required for issuance or delivery upon exercise of
this Warrant. 
  
 3. Fractional Shares. No fractional
shares or scrip representing fractional shares shall be issued upon any exercise of this Warrant. With respect to any fraction of a share called for upon any exercise hereof, the 

 Company shall pay to the Holder an amount in cash equal to such fraction multiplied by the current market value of such
fractional share, determined as follows: 
  
 (a)
The current value shall be the last reported sale price of the Common Stock on The American Stock Exchange on the last trading day prior to the date of exercise of this Warrant, or if no such sale is made on such day, the average closing bid and
asked prices for such day on the composite tape of the exchange for all exchanges on which sales were made that day; or 
  
 (b) If the Common Stock is not so listed or admitted to unlisted trading privileges, the current value shall be the mean of the last
reported bid and asked prices reported by the National Association of Securities Dealers Quotation System (or, if not so quoted on NASDAQ, by the National Quotation Bureau, Inc.) on the last trading day prior to the date of the exercise of this
Warrant; or 
  
 (c) If the Common Stock is not so
listed or admitted to unlisted trading privileges and bid and asked prices are not so reported, the current value shall be an amount, not less than book value, determined in such reasonable manner as may be prescribed by the Board of Directors of
the Company, such determination to be final and binding on the Holder. 
  
 4. Exchange, Assignment or Loss of Warrant. This Warrant is assignable to permitted assignees and exchangeable, without expense, at the option of the Holder, upon presentation and surrender hereof to the Company for other Warrants of
different denominations entitling the holder thereof to purchase in the aggregate the same number of shares of Common Stock purchasable hereunder. Any such assignment shall be made by surrender of this Warrant to the Company, with the Assignment
Form annexed hereto duly executed and funds sufficient to pay any transfer tax; whereupon the Company shall, without charge, execute and deliver a new Warrant in the name of the permitted assignee named in such instrument of assignment. Upon any
permitted assignment or exchange, this Warrant promptly shall be canceled. This Warrant may be divided or combined with other Warrants which carry the same rights upon presentation hereof at the office of the Company, together with a written notice
specifying the denominations in which new Warrants are to be issued and signed by the Holder hereof. The term “Warrant” as used herein includes any Warrants issued in substitution for or replacement of this Warrant, or into which this
Warrant may be divided or exchanged. Upon receipt by the Company of evidence satisfactory to it of the loss, theft, destruction or mutilation of this Warrant, and (in the case of loss, theft or destruction) of reasonably satisfactory indemnification
including a surety bond, and upon surrender and cancellation of this Warrant, if mutilated, the Company will execute and deliver a new Warrant of like tenor and date. Any such new Warrant executed and delivered shall constitute an additional
contractual obligation on the part of the Company, whether or not this Warrant is lost, stolen, destroyed, or mutilated, and shall be at any time enforceable by a Holder. 
  
 5. Rights of the Holder. The Holder shall not, by virtue hereof, be entitled to any rights of a shareholder of the
Company, either at law or equity, and the rights of the Holder are limited to those expressed in this Warrant and are not enforceable against the Company except to the extent set forth herein. 
  
 6. Anti-Dilution Provisions. 
  
 (a) Stock Splits and Stock Dividends. Anything in
this Section 6 to the contrary notwithstanding, in case the Company shall at any time issue Common Stock or securities convertible into or exercisable or exchangeable for Common Stock by way of dividend or other distribution on any stock of the
Company or subdivide or combine the outstanding shares of Common Stock, the Exercise Price shall be proportionately decreased in the case of such issuance (on the day following the date fixed for determining shareholders entitled to receive such
dividend or other distribution) or decreased in the case of such subdivision or increased in the case of such combination (on the date that such subdivision or combination shall become effective); provided, however, that the Exercise Price shall
never be less than the par value per share of Common Stock. 
  
 (b) Number of Shares Adjusted. Upon any adjustment of the Exercise Price, the holder of this Warrant shall thereafter (until another such adjustment) be entitled to purchase, at the new Exercise Price, the
number of Shares, calculated to the nearest full share, obtained by multiplying the number of shares of Common Stock initially issuable upon exercise of this Warrant by the Exercise Price in effect on the date hereof and dividing the product so
obtained by the new Exercise Price. 

 (c) Common Stock Defined. Whenever reference is made in this Section 6 to the
issue or sale of shares of Common Stock, the term “Common Stock” shall mean the Common Stock of the Company of the class authorized as of the date hereof and any other class of stock ranking on a parity with such Common Stock. However,
subject to the provisions of Section 9 hereof, shares issuable upon exercise hereof shall include only shares of the class designated as Common Stock of the Company as of the date hereof. 
  
 7. Officer’s Certificate. Upon request by the Holder, and if the Exercise Price is adjusted as required by the
provisions of Section 6 hereof, the Company shall forthwith file in the custody of its Secretary or an Assistant Secretary at its principal office, and with its stock transfer agent, if any, an officer’s certificate showing the adjusted
Exercise Price determined as herein provided and setting forth in reasonable detail the facts requiring such adjustment and the calculation thereof. Each such officer’s certificate shall be made available at all reasonable times for inspection
by the Holder and the Company shall, upon request after each such adjustment, mail a copy of such certificate to the Holder. 
  
 8. Notice to Holders. If, prior to the expiration of this Warrant either by its terms or by its exercise in full, any of the following shall occur:

  
 (a) the Company shall declare a dividend or authorize any
other distribution on its Common Stock; or 
  
 (b) the Company
shall authorize the granting to the shareholders of its Common Stock of rights to subscribe for or purchase any securities or any other similar rights; or 
  
 (c) any reclassification, reorganization or similar change of the Common Stock, or any consolidation or merger to which the Company is a party, or the
sale, lease, or exchange of any signification portion of the assets of the Company; or 
  
 (d) the voluntary or involuntary dissolution, liquidation or winding up of the Company; or 
  
 (e) any purchase, retirement or redemption by the Company of its Common Stock; 
  
 then, and in any such case, the Company shall deliver to the Holder or Holders written notice thereof at least 30 days prior to the earliest
applicable date specified below with respect to which notice is to be given, which notice shall state the following: 
  
 (f) the date on which a record is to be taken for the purpose of such dividend, distribution or rights, or, if a record is not to be taken, the date as of
which the shareholders of Common Stock of record to be entitled to such dividend, distribution or rights are to be determined; 
  
 (g) the date on which such reclassification, reorganization, consolidation, merger, sale, transfer, dissolution, liquidation, winding up or purchase,
retirement or redemption is expected to become effective, and the date, if any, as of which the Company’s shareholders of Common Stock of record shall be entitled to exchange their Common Stock for securities or other property deliverable upon
such reclassification, reorganization, consolidation, merger, sale, transfer, dissolution, liquidation, winding up, purchase, retirement or redemption; and 
  
 (h) if any matters referred to in the foregoing clauses (a) and (b) are to be voted upon by shareholders of Common Stock, the date as of which those
shareholders to be entitled to vote are to be determined. 
  
 9.
Reclassification, Reorganization or Merger. In case of any reclassification, capital reorganization or other change of outstanding shares of Common Stock of the Company (other than a change in par value, or from par value to no par value, or
as a result of an issuance of Common Stock by way of dividend or other distribution or 

 of a subdivision or combination), or in case of any consolidation or merger of the Company with or into another
corporation (other than a merger with a subsidiary in which merger the Company is the continuing corporation and which does not result in any reclassification, capital reorganization or other change of outstanding shares of Common Stock of the class
issuable upon exercise of this Warrant) or in case of any sale or conveyance to another corporation of the property of the Company as an entirety or substantially as an entirety, the Company shall cause effective provision to be made so that the
Holder shall have the right thereafter, by exercising this Warrant, to purchase the kind and amount of shares of stock and other securities and property receivable upon such reclassification, capital reorganization or other change, consolidation,
merger, sale or conveyance as if the Holder had exercised this Warrant prior to such transaction. Any such provision shall include provision for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in
this Warrant. A copy of such provision shall be furnished to the holder(s) of Warrants within ten days after execution of the appropriate agreement pertaining to same and, in any event, prior to any consolidation, merger, sale or conveyance subject
to the provisions of this Section 9. The foregoing provisions of this Section 9 shall similarly apply to successive reclassifications, capital reorganizations and changes of shares of Common Stock and to successive consolidations, mergers, sales or
conveyances. 
  
 10. Dissolution. If, at any time prior to
the expiration of this Warrant and prior to the exercise thereof, any dissolution, liquidation or winding up of the Company shall be proposed, the Company shall cause at least 30 days’ notice to be mailed by certified mail to the registered
Holder of this Warrant Certificate at the Holder’s address as it appears on the books of the Company. Such notice shall specify the date as of which holders of record of Common Stock shall participate in any distribution or shall be entitled to
exchange their Common Stock for securities or other property, deliverable upon such dissolution, liquidation or winding up, as the case may be; to the end that, during such period of 30 days, the Holder of this Warrant may exercise this Warrant and
purchase Common Stock (or other stock substituted therefor as hereinbefore provided) and be entitled in respect of shares so purchased to all of the rights of the other holders of Common Stock of the Company. In case of a dissolution, liquidation or
winding up of the Company, all purchase rights under this Warrant shall terminate at the close of business on the date as of which holders of record of the Common Stock shall be entitled to participate in a distribution of the assets of the Company
in connection with such dissolution, liquidation or winding up (provided that in no event shall said date be less than 30 days after completion of service by certified mail of notice as aforesaid). Any Warrant not exercised prior to such time shall
be void and no rights shall exist thereunder. In any such case of termination of purchase rights, a statement thereof shall be included in the notice provided for herein. 
  
 11. Rights. 
  
 (a) Piggy-Back Registration. Subject to Section 11(i) below, if at any time during the two years following the date of this
Warrant, and if the shares of Common Stock subject to this Warrant have not then been registered with the Securities and Exchange Commission, the Company proposes to register any of its Common Stock under the Act in connection with the public
offering of such securities solely for cash on a form that would also permit the registration of the Common Stock of the Holders that they acquire through exercise of this Warrant, the Company shall, each such time, promptly give each Holder written
notice of such determination. Upon the written request of any Holder given within 20 days after mailing of any such notice by the Company, the Company shall use its best efforts to cause to be registered under the Act all of such Common Stock
acquired through exercise of this Warrant that each such Holder has requested to be registered. 
  
 (b) Obligations of the Company. Whenever required to use its best efforts to effect the registration of any Common Stock, the
Company shall, as expeditiously as reasonably possible: 
  
 (A) Prepare and file with the Securities and Exchange Commission (“SEC”) a registration statement with respect to such Warrant Stock and use its best efforts to cause such registration statement to become
and remain effective; provided, however, that in connection with any proposed registration intended to permit an offering of any securities from time to time (i.e., a so-called “shelf registration”), the Company shall in no event be
obligated to cause any such registration to remain effective for more than one year. 

 (B) Prepare and file with the SEC such amendments and supplements to such registration
statement and the prospectus used in connection with such registration statement as may be necessary to comply with the provisions of the Act with respect to the disposition of all securities covered by such registration statement. 
  
 (C) Furnish to the Holders such numbers of copies of a
prospectus, including a preliminary prospectus, in conformity with the requirements of the Act, and such other documents as they may reasonably request in order to facilitate the disposition of Warrant Stock owned by them. 
  
 (D) Use its best efforts to register and qualify the
securities covered by such registration statement under such other securities or blue-sky laws of such jurisdictions as shall be reasonably appropriate for the distribution of the securities covered by the registration statement, provided that the
Company shall not be required in connection therewith or as a condition thereto to qualify to do business or to file a general consent to service of process in any such states or jurisdictions, and further provided that (anything in this Section (l)
to the contrary notwithstanding with respect to the bearing of expenses) if any jurisdiction in which the securities shall be qualified shall require that expenses incurred in connection with the qualification of the securities in that jurisdiction
be borne by selling shareholders pro rata, to the extent required by such jurisdiction. 
  
 (c) Furnish Information. It shall be a condition precedent to the obligations of the Company to take any action that the Holders
shall furnish to the Company such information regarding them, the Warrant Stock held by them, and the intended method of disposition of such securities as the Company shall reasonably request and as shall be required in connection with the action to
be taken by the Company. 
  
 (d) Company
Registration Expenses. In the case of any registration effected pursuant to Section (11)(a), the Company shall bear any additional registration and qualification fees and expenses (excluding underwriters’ discounts, commissions and
expenses), and any additional costs and disbursements of counsel for the Company that result from the inclusion of securities held by the Holders in such registration; provided, however, that if any such cost or expense is attributable solely to one
selling Holder and does not constitute a normal cost or expense of such a registration, such cost or expense shall be paid by that selling Holder. In addition, each selling Holder shall bear the fees and costs of its own counsel. 
  
 (e) Underwriting Requirements. In connection with any
offering involving an underwriting of shares of Common Stock being issued by the Company or being sold by persons other than the Holders exercising piggy-back registration rights (the “Initial Sellers”), the Company shall not be required
under Section 11(a) to include any of the Holders’ Warrant Stock in such underwriting unless they accept the terms of the underwriting as agreed upon between the Company or the Initial Sellers and the underwriters selected by it or them, and
then only in such quantity as will not, in the written opinion of the underwriters, jeopardize the success of the offering by the Company or by the Initial Sellers. If the total amount of securities that all Holders request to be included in such
offering exceeds the amount of securities that the underwriters reasonably believe compatible with the success of the offering, the Company shall only be required to include in the offering so many of the securities of the selling Holders as the
underwriters believe will not jeopardize the success of the offering (the securities so included to be apportioned pro rata among the selling Holders according to the total amount of securities owned by said selling Holders, or in such other
proportions as shall mutually be agreed to by such selling Holders), provided that no such reduction shall be made with respect to any securities offered by the Company or the Initial Sellers for its or their own account. 
  
 (f) Delay of Registration. No Holder shall have any
right to take any action to restrain, enjoin, or otherwise delay any registration as the result of any controversy that might arise with respect to the interpretation or implementation of this Section 11. 

 (g) Indemnification. In the event any Common Stock is included in a registration
statement: 
  
 (A) To the extent permitted by
law, the Company will indemnify and hold harmless each Holder requesting or joining in a registration, any underwriter (as defined in the Act) for it, and each such person, if any, who controls such Holder or underwriter within the meaning of the
Act, against any losses, claims, damages, or liabilities, joint or several, to which they may become subject under the Act or otherwise, insofar as such losses, claims, damages, or liabilities (or actions in respect thereof) arise out of or are
based on any untrue or alleged untrue statement of any material fact contained in such registration statement, including any preliminary prospectus or final prospectus contained therein or any amendments or supplements thereto, or arise out of or
are based upon the omission or alleged omission to state therein a material fact required to be stated therein, or necessary to make the statements therein not misleading; and will reimburse each such Holder, such underwriter, or controlling person
for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability, or action; provided, however, that the indemnity agreement contained in this Section 11 (g)(A) shall
not apply to amounts paid in settlement of any such loss, claim, damage, liability, or action if such settlement is effected without the consent of the Company (which consent shall not be unreasonably withheld) nor shall the Company be liable in any
such case for any such loss, claim, damage, liability, or action to the extent that it arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in connection with such registration
statement, preliminary prospectus, final prospectus, or amendments or supplements thereto, in reliance upon and in conformity with written information furnished expressly for use in connection with such registration by any such Holder, underwriter,
or controlling person. 
  
 (B) To the extent
permitted by law, each Holder requesting or joining in a registration will indemnify and hold harmless the Company, each of its directors, each of its officers who have signed the registration statement, each person, if any, who controls the Company
within the meaning of the Act, and each agent and any underwriter for the Company (within the meaning of the Act) against any losses, claims, damages, or liabilities to which the Company or any such director, officer, controlling person, agent, or
underwriter may become subject, under the Act or otherwise, insofar as such losses, claims, damages, or liabilities (or actions in respect thereto) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact
contained in such registration statement, including any preliminary prospectus or final prospectus contained therein or any amendments or supplements thereto, or arise out of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was
made in such registration statement, preliminary or final prospectus, or amendments or supplements thereto, in reliance upon and in conformity with written information furnished by such Holder expressly for use in connection with such registration;
and each such Holder will reimburse any legal or other expenses reasonably incurred by the Company or any such director, officer, controlling person, agent, or underwriter in connection with investigating or defending any such loss, claim, damage,
liability, or action; provided, however, that the indemnity agreement contained in this Section 11 (g)(B) shall not apply to amounts paid in settlement of any such loss, claim, damage, liability, or action if such settlement is effected without the
consent of such Holder (which consent shall not be unreasonably withheld). 
  
 (C) Promptly after receipt by an indemnified party under this Section 11(g) of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against any
indemnifying party under this paragraph, notify the indemnifying party in writing 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 the defense thereof with counsel mutually satisfactory to the parties. The failure to notify an indemnifying party promptly of the commencement of any such action, if 

 prejudicial to his ability to defend such action, shall relieve such indemnifying party of any liability
to the indemnified party under this paragraph, but the omission to so notify the indemnifying party will not relieve him of any liability that he may have to any indemnified party otherwise than under this paragraph. 
  
 (h) Termination of the Company’s Obligations.
The Company shall have no obligations pursuant to this Section 11 more than three years after the Expiration Date of this Agreement. 
  
 (i) Lockup Agreement. In consideration for the Company agreeing to its obligations under this Section 11, each Holder agrees in
connection with any registration of the Company’s securities that, upon the request of the Company or the underwriters managing any underwritten offering of the Company’s securities, not to sell, make any short sale of, loan, grant any
option for the purchase of, or otherwise dispose of any Warrant Stock (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed
30 days from the effective date of such registration) as the Company or the underwriters may specify. 
  
 (j) Notice. Any notices or certificates by the Company to the Holder and by the Holder to the Company shall be deemed delivered if
in writing and delivered personally (including by telex, telecopier, telegram or other acknowledged receipt) or three business days following deposit in the United States mails, sent by registered or certified mail, return receipt requested,
addressed as follows: 
  

			
	Holder:	  	Geduld Capital Management LLC
	 	  	19495 Biscayne Blvd., Suite 608
	 	  	Aventura, FL 33180
		
	Company:	  	Rentech, Inc.
	 	  	1331 17th Street, Suite 720
	 	  	Denver, CO 80202
	 	  	Attention: Chief Operating Officer

  
 Any person may change the address for
the giving of notice by providing notice in accordance with these provisions. The change in notice shall be effective five (5) business days thereafter. 
  
 12. Amendments and Waivers. Any term, condition or provision of this Warrant may be amended and the observance thereof may be waived (either
generally or in a particular instance and either retroactively or prospectively), with the written consent of the Company and the Holders. 
  
 13. Entire Agreement. This Warrant constitutes the entire agreement among the parties thereto and supersedes any and all prior agreements whether
written or oral regarding the subject matter hereof. 
  
 14.
Transfer to Comply with the Securities Act of 1933. 
  
 (a) This Warrant or the Warrant Stock or any other security issued or issuable upon exercise of this Warrant may not be offered or sold except in conformity with the Securities Act of 1933, as amended, and then only
against receipt of an agreement of such person to whom such offer of sale is made to comply with the provisions of this Section 14 with respect to any resale or other disposition of such securities. 
  
 (b) Before this Warrant may be sold, transferred, or
assigned to a permitted assignee by the Holder, the Holder must notify the Company in writing at least 30 days prior to any such transfer. The Company shall the first right of refusal to repurchase the Warrant for an amount not less than the amount
offered by any third party. 

 (c) The Company may cause the following legend to be set forth on each certificate
representing Warrant Stock or any other security issued or issuable upon exercise of this Warrant not theretofore distributed to the public or sold to underwriters for distribution to the public pursuant to Section (l) hereof, unless counsel for the
Company is of the opinion as to any such certificate that such legend is unnecessary: 
  
 The securities represented by this certificate may not be offered for sale, sold or otherwise transferred except pursuant to an effective registration statement made under the Securities Act of 1933 (the
“Act”), or pursuant to an exemption from registration under the Act the availability of which is to be established to the satisfaction of the Company. 
  

15. Condition Precedent. Exercise of this Warrant is subject to the prior approval of The American Stock Exchange of the issuance by the Company
of the Warrant Stock for listing on that exchange. 
  
 16.
Applicable Law. This Warrant shall be governed by, and construed in accordance with, the laws of the state of Colorado. 
  

					
	ATTEST:	 	RENTECH, INC.
			
	 /s/ Ronald C. Butz

	 	By:	 	 /s/ Dennis L. Yakobson

	Ronald C. Butz, Secretary	 	 	 	Dennis L. Yakobson, President
			
	 	 	Date:	 	Executed November 19, 2004

	

  

 PURCHASE FORM 
  
 Dated             , 20    

  
 The undersigned hereby irrevocably elects to exercise the
within Warrant to the extent of purchasing                      shares of Common Stock and hereby makes payment of
$                     in payment of the actual exercise price thereof. 
  
 __________________________________ 
  

INSTRUCTIONS FOR REGISTRATION OF SHARES 
  

	Name	                                     
                                        
                                        
                                        
                                        
      

   (please typewrite or print in block letters) 
  
 Address
                                        
                                        
                                        
                                        
                                     
  
 Signature
                                       
                                        
                                        
                                        
                                     
  
 Social Security or Employer I.D. No.
                                       
                                        
              
  

  
 ASSIGNMENT FORM 
 (for permitted assignees only) 
  
 FOR VALUE RECEIVED,
                                       
                                        
                                        
          hereby sells, assigns and transfers unto 
  
 Name
                                       
                                        
                                        
                                        
                                        
    
   (please typewrite or print in block letters) 
  
 Address
                                       
                                        
                                        
                                        
                                      
  
 the right to purchase Common Stock represented by this Warrant to the extent of
                     Shares as to which such right is exercisable and does hereby irrevocable constitute and appoint
                                       
                                        
                             
                                        
                , as attorney in fact, to transfer the same on the books of the Company, with full power of substitution in the premises. 
  

			
	 Signature:
  
	 	  

		
	 Dated:Registration Rights Agreement with Geduld Capital Management LLC

 Exhibit 10.6 
  
 EX-10.6 REGISTRATION RIGHTS AGREEMENT with Geduld Capital Management LLC 
  
 REGISTRATION RIGHTS AGREEMENT 
  

This Registration Rights Agreement (this “Agreement”) is made and entered into as of November 19, 2004, by and between Rentech, Inc., a
Colorado corporation (the “Company”), and GEDULD CAPITAL MANAGEMENT LLC, a limited liability company organized under the laws of the state of Florida (“Investor”). 
  
 This Agreement is made pursuant to the Securities Purchase Agreement, dated as of the date hereof, by and between Investor
and the Company (the “Securities Purchase Agreement”), and pursuant to the Note and the Warrants referred to therein. 
  
 The Company and Investor hereby agree as follows: 
  
 1. Definitions. Capitalized terms used and not otherwise defined herein that are defined in the Securities Purchase Agreement shall have the meanings given such
terms in the Securities Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: 
  
 “Commission” means the Securities and Exchange Commission. 
  
 “Common Stock” means shares of the Company’s common stock, par value $0.01 per share. 
  
 “Exchange Act” means the Securities Exchange Act of 1934, as
amended, and any successor statute. 
  
 “Filing
Date” means, with respect to the Registration Statement required to be filed hereunder, a date no later than one hundred thirty (130) days following the date hereof. 
  
 “Holder” or “Holders” means Investor or any of its affiliates or transferees to the extent
any of them hold Registrable Securities. 
  
 “Indemnified
Party” shall have the meaning set forth in Section 5(c). 
  
 “Indemnifying Party” shall have the meaning set forth in Section 5(c). 
  
 “Note” has the meaning set forth in the Securities Purchase Agreement. 
  
 “Proceeding” means an action, claim, suit, investigation or proceeding (including, without limitation, an
investigation or partial proceeding, such as a deposition), whether commenced or threatened. 
  
 “Prospectus” means the prospectus included in the Registration Statement (including, without limitation, a prospectus that includes any information previously omitted from a prospectus filed as part
of an effective registration statement in reliance upon Rule 430A promulgated under the Securities Act), as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities
covered by the Registration Statement, and all other amendments and supplements to the Prospectus, including post-effective amendments, and all material incorporated by reference or deemed to be incorporated by reference in such Prospectus.

  
 “Registrable Securities” means the shares of
Common Stock and issuable upon exercise of the Warrants. 
  
 “Registration Statement” means each registration statement required to be filed hereunder, including the Prospectus, amendments and supplements to such registration statement or Prospectus, including pre- and post-effective
amendments, all exhibits thereto, and all material incorporated by reference or deemed to be incorporated by reference in such registration statement. 

 “Rule 144” means Rule 144 promulgated by the Commission pursuant to the Securities Act,
as such Rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule. 
  
 “Rule 415” means Rule 415 promulgated by the Commission pursuant to the Securities Act, as such Rule may be
amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such Rule. 
  
 “Securities Act” means the Securities Act of 1933, as amended, and any successor statute. 
  
 “Securities Purchase Agreement” means the agreement between
the parties hereto calling for the issuance by the Company of a Promissory Note in the principal amount of $250,000 plus the Warrants. 
  
 “Trading Market” means any of the NASD OTC Bulletin Board, NASDAQ SmallCap Market, the Nasdaq National Market, the American Stock
Exchange or the New York Stock Exchange. 
  
 “Warrants” means the Common Stock purchase warrants issued pursuant to the Securities Purchase Agreement. 
  
 2. Registration. 
  
 (a) The Company shall prepare and file with the Commission as soon as practical after the date hereof a Registration Statement covering the Registrable
Securities for an offering to be made on a continuous basis pursuant to Rule 415. The Registration Statement shall be on Form S-3 (except if the Company is not then eligible to register for resale the Registrable Securities on Form S-3, in which
case such registration shall be on another appropriate form in accordance herewith). The Company shall use its best efforts to cause the Registration Statement to become effective and remain effective as provided herein. The Company shall use its
reasonable commercial efforts to cause the Registration Statement to be declared effective under the Securities Act as promptly as possible after the filing thereof (the “Effectiveness Date”). The Company shall use its reasonable
commercial efforts to keep the Registration Statement continuously effective under the Securities Act until the date which is the earlier date of when (i) all Registrable Securities have been sold, or (ii) all Registrable Securities may be sold
immediately without registration under the Securities Act and without volume restrictions pursuant to Rule 144(k), as determined by the counsel to the Company pursuant to a written opinion letter to such effect, addressed and acceptable to the
Company’s transfer agent and the affected Holders, or (iii) the second (2nd) anniversary of the expiration of the term of the Warrant, as it may be extended, provided Rule 144(k) or similar successor rule is then applicable to the Registrable
Securities (the “Effectiveness Period”). 
  
 (b) Within
five business days of the Effectiveness Date, the Company shall cause its counsel to issue a blanket opinion in the form attached hereto as Exhibit A, to the transfer agent stating that the shares are subject to an effective registration statement
and can be reissued free of restrictive legend upon notice of a sale by Investor and confirmation by Investor that it has complied with the prospectus delivery requirements, provided that the Company has not advised the transfer agent orally or in
writing that the opinion has been withdrawn. Copies of the blanket opinion required by this Section 2(c) shall be delivered to Investor within the time frame set forth above. 
  
 3. Registration Procedures. If and whenever the Company is required by the provisions hereof to effect the registration of any
Registrable Securities under the Securities Act, the Company will, as expeditiously as practical: 
  
 (a) prepare and file with the Commission the Registration Statement with respect to such Registrable Securities, respond as promptly as feasible to any
comments received from the Commission, and use its best efforts to cause the Registration Statement to become and remain effective for the Effectiveness Period with respect thereto; 
  
 (b) prepare and file with the Commission such amendments and supplements to the Registration Statement and the Prospectus
used in connection therewith as may be necessary to comply with the provisions of the Securities Act with respect to the disposition of all Registrable Securities covered by the Registration Statement and to keep such Registration Statement
effective until the expiration of the Effectiveness Period; 

 (c) furnish to Investor such number of copies of the Registration Statement and the Prospectus included
therein (including each preliminary Prospectus) as Investor reasonably may request to facilitate the public sale or disposition of the Registrable Securities covered by the Registration Statement; 
  
 (d) use its commercially reasonable efforts to register or qualify
Investor’s Registrable Securities covered by the Registration Statement under the securities or “blue sky” laws of such jurisdictions within the United States as Investor may reasonably request, provided, however, that the Company
shall not for any such purpose be required to qualify generally to transact business as a foreign corporation in any jurisdiction where it is not so qualified or to consent to general service of process in any such jurisdiction; 
  
 (e) list the Registrable Securities covered by the Registration Statement
with any securities exchange on which the Common Stock of the Company is then listed; 
  
 (f) promptly notify Investor at any time when a Prospectus relating thereto is required to be delivered under the Securities Act, of the happening of any event of which the Company has knowledge as a result of which
the Prospectus contained in such Registration Statement, as then in effect, includes an untrue statement of a material fact or omits to state a material fact required to be stated therein or necessary to make the statements therein not misleading in
light of the circumstances then existing; and 
  
 4. Registration Expenses.
All expenses relating to the Company’s compliance with Sections 2 and 3 hereof, including, without limitation, all registration and filing fees, printing expenses, fees and disbursements of counsel and independent public accountants for the
Company, fees and expenses (including reasonable counsel fees) incurred in connection with complying with state securities or “blue sky” laws, fees of the NASD, transfer taxes and fees of transfer agents and registrars are called
“Registration Expenses”. The Company shall only be responsible for Registration Expenses. 
  
 5. Indemnification. 
  
 (a) In the event of a registration of any Registrable Securities under the Securities Act pursuant to this Agreement, the Company will indemnify and hold harmless Investor, and its officers, directors and each other person, if any, who
controls Investor within the meaning of the Securities Act, against any losses, claims, damages or liabilities, joint or several, to which Investor, or such persons may become subject under the Securities Act or otherwise, insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact contained in any Registration Statement under which such Registrable Securities were
registered under the Securities Act pursuant to this Agreement, any preliminary Prospectus or final Prospectus contained therein, or any amendment or supplement thereof, or arise out of or are based upon the omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse Investor, and each such person for any reasonable legal or other expenses incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action; provided, however, that the Company will not be liable in any such case if and to the extent that any such loss, claim, damage or liability arises out of or is based upon
an untrue statement or alleged untrue statement or omission or alleged omission so made in conformity with information furnished by or on behalf of Investor or any such person in writing specifically for use in any such document. 
  
 (b) In the event of a registration of the Registrable Securities under the
Securities Act pursuant to this Agreement, Investor will indemnify and hold harmless the Company, and its officers, directors and each other person, if any, who controls the Company within the meaning of the Securities Act, against all losses,
claims, damages or liabilities, joint or several, to which the Company or such persons may become subject under the Securities Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or
are based upon any untrue statement or alleged untrue statement of any material fact which was furnished in writing by Investor to the Company expressly for use in (and such information is contained in) the Registration Statement under which such
Registrable Securities were registered under the Securities Act pursuant to this 

 Agreement, any preliminary Prospectus or final Prospectus contained therein, or any amendment or supplement thereof, or
arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse the Company and each such person for any
reasonable legal or other expenses incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action, provided, however, that Investor will be liable in any such case if and only to the extent that any
such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission so made in conformity with information furnished in writing to the Company by or on behalf of
Investor specifically for use in any such document. Notwithstanding the provisions of this paragraph, Investor shall not be required to indemnify any person or entity in excess of the amount of the aggregate net proceeds received by Investor in
respect of Registrable Securities in connection with any such registration under the Securities Act. 
  
 (c) Promptly after receipt by a party entitled to claim indemnification hereunder (an “Indemnified Party”) of notice of the commencement of any
action, such Indemnified Party shall, if a claim for indemnification in respect thereof is to be made against a party hereto obligated to indemnify such Indemnified Party (an “Indemnifying Party”), notify the Indemnifying Party in writing
thereof, but the omission so to notify the Indemnifying Party shall not relieve it from any liability which it may have to such Indemnified Party other than under this Section 5(c) and shall only relieve it from any liability which it may have to
such Indemnified Party under this Section 5(c) if and to the extent the Indemnifying Party is prejudiced by such omission. In case any such action shall be brought against any Indemnified Party and it shall notify the Indemnifying Party of the
commencement thereof, the Indemnifying Party shall be entitled to participate in and, to the extent it shall wish, to assume and undertake the defense thereof with counsel satisfactory to such Indemnified Party, and, after notice from the
Indemnifying Party to such Indemnified Party of its election so to assume and undertake the defense thereof, the Indemnifying Party shall not be liable to such Indemnified Party under this Section 5(c) for any legal expenses subsequently incurred by
such Indemnified Party in connection with the defense thereof; if the Indemnified Party retains its own counsel, then the Indemnified Party shall pay all fees, costs and expenses of such counsel, provided, however, that, if the defendants in any
such action include both the indemnified party and the Indemnifying Party and the Indemnified Party shall have reasonably concluded that there may be reasonable defenses available to it which are different from or additional to those available to
the Indemnifying Party or if the interests of the Indemnified Party reasonably may be deemed to conflict with the interests of the Indemnifying Party, the Indemnified Party shall have the right to select one separate counsel and to assume such legal
defenses and otherwise to participate in the defense of such action, with the reasonable expenses and fees of such separate counsel and other expenses related to such participation to be reimbursed by the Indemnifying Party as incurred. 

 
 (d) In order to provide for just and equitable contribution in the event
of joint liability under the Securities Act in any case in which either (i) Investor, or any officer, director or controlling person of Investor, makes a claim for indemnification pursuant to this Section 5 but it is judicially determined (by the
entry of a final judgment or decree by a court of competent jurisdiction and the expiration of time to appeal or the denial of the last right of appeal) that such indemnification may not be enforced in such case notwithstanding the fact that this
Section 5 provides for indemnification in such case, or (ii) contribution under the Securities Act may be required on the part of Investor or such officer, director or controlling person of Investor in circumstances for which indemnification is
provided under this Section 5; then, and in each such case, the Company and Investor will contribute to the aggregate losses, claims, damages or liabilities to which they may be subject (after contribution from others) in such proportion so that
Investor is responsible only for the portion represented by the percentage that the public offering price of its securities offered by the Registration Statement bears to the public offering price of all securities offered by such Registration
Statement, provided, however, that, in any such case, (A) Investor will not be required to contribute any amount in excess of the public offering price of all such securities offered by it pursuant to such Registration Statement; and (B) no person
or entity guilty of fraudulent misrepresentation (within the meaning of Section 10(f) of the Act) will be entitled to contribution from any person or entity who was not guilty of such fraudulent misrepresentation. 
  
 6. Representations and Warranties. 
  
 (a) The Common Stock of the Company is registered pursuant to Section 12(b)
or 12(g) of the Exchange Act and, except with respect to certain matters which the Company has disclosed to Investor in the Securities Purchase Agreement, the Company has timely filed all proxy statements, reports, schedules, forms, 

 statements and other documents required to be filed by it under the Exchange Act. The Company has filed (i) its Annual
Report on Form 10-K for the fiscal year ended September 30, 2003 and (ii) its Quarterly Report on Form 10-Q for the fiscal quarters ended December 31, 2003, March 31, 2004 and June 30, 2004 (collectively, the “SEC Reports”). Each SEC
Report was, at the time of its filing, in substantial compliance with the requirements of its respective form and, to the knowledge of the Company, none of the SEC Reports, nor the financial statements (and the notes thereto) included in the SEC
Reports, as of their respective filing dates, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which
they were made, not misleading. The financial statements of the Company included in the SEC Reports comply, to the knowledge of the Company, as to form in all material respects with applicable accounting requirements and the published rules and
regulations of the Commission or other applicable rules and regulations with respect thereto. Such financial statements have been prepared in accordance with generally accepted accounting principles (“GAAP”) applied on a consistent basis
during the periods involved (except (i) as may be otherwise indicated in such financial statements or the notes thereto or (ii) in the case of unaudited interim statements, to the extent they may not include footnotes or may be condensed) and, to
the knowledge of the Company, fairly present in all material respects the financial condition, the results of operations and the cash flows of the Company and its subsidiaries, on a consolidated basis, as of, and for, the periods presented in each
such SEC Report. 
  
 (b) The Common Stock is listed for trading on
the American Stock Exchange (“AMEX”) and satisfies all requirements for the continuation of such listing. The Company has not received any notice that its Common Stock will be delisted from the AMEX (except for prior notices which have
been fully remedied) or that the Common Stock does not meet all requirements for the continuation of such listing. 
  
 (c) The Warrants, the Note and the shares of Common Stock which Investor may acquire pursuant to the Warrants are all restricted securities under the
Securities Act as of the date of this Agreement. The Company will not issue any stop transfer order or other order impeding the sale and delivery of any of the Registrable Securities at such time as such Registrable Securities are registered for
public sale or an exemption from registration is available, except as required by federal or state securities laws. 
  
 (d) The Company understands the nature of the Registrable Securities issuable upon the exercise of the Warrant and recognizes that the issuance of such
Registrable Securities may have a potential dilutive effect. The Company specifically acknowledges that its obligation to issue the Registrable Securities is binding upon the Company and enforceable regardless of the dilution such issuance may have
on the ownership interests of other shareholders of the Company. 
  
 (e) Except for agreements made in the ordinary course of business, there is no agreement that has not been filed with the Commission as an exhibit to a registration statement or to a form required to be filed by the Company under the
Exchange Act, the breach of which could reasonably be expected to have a material and adverse effect on the Company and its subsidiaries, or would prohibit or otherwise interfere with the ability of the Company to enter into and perform any of its
obligations under this Agreement in any material respect. 
  
 (f)
The Company will at all times have authorized and reserved a sufficient number of shares of Common Stock for the full exercise of the Warrants. 
  
 7. Cooperation Respecting Registration. The Holder shall cooperate in connection with the preparation of the Registration Statement, including providing
information necessary for inclusion in the Registration Statement, as requested by the Company or the Commission. 
  
 8. Miscellaneous. 
  
 (a) Compliance. Each Holder covenants and agrees that it will comply with the prospectus delivery requirements of the Securities Act as applicable
to it in connection with sales of Registrable Securities pursuant to the Registration Statement. 

 (b) Discontinued Disposition. Each Holder agrees by its acquisition of such Registrable Securities
that, upon receipt of a notice from the Company of the occurrence of a Discontinuation Event (as defined below), such Holder will forthwith discontinue disposition of such Registrable Securities under the applicable Registration Statement until such
Holder’s receipt of the copies of the supplemented Prospectus and/or amended Registration Statement or until it is advised in writing by the Company that the use of the applicable Prospectus may be resumed, and, in either case, has received
copies of any additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such Prospectus or Registration Statement. The Company may provide appropriate stop orders to enforce the provisions of this
paragraph. For purposes of this Section 8(b), a “Discontinuation Event” shall mean (i) when the Commission notifies the Company whether there will be a “review” of such Registration Statement and whenever the Commission comments
in writing on such Registration Statement (the Company shall provide true and complete copies thereof and all written responses thereto to each of the Holders); (ii) any request by the Commission or any other Federal or state governmental authority
for amendments or supplements to such Registration Statement or Prospectus or for additional information; (iii) the issuance by the Commission of any stop order suspending the effectiveness of such Registration Statement covering any or all of the
Registrable Securities or the initiation of any Proceedings for that purpose; (iv) the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any Proceeding for such purpose; and/or (v) the occurrence of any event or passage of time that makes the financial statements included in such Registration Statement
ineligible for inclusion therein or any statement made in such Registration Statement or Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires any revisions to such
Registration Statement, Prospectus or other documents so that, in the case of such Registration Statement or Prospectus, as the case may be, 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 light of the circumstances under which they were made, not misleading. 
  
 (c) Piggy-Back Registrations. If at any time during the Effectiveness Period there is not an effective Registration Statement covering all of the
Registrable Securities and the Company shall determine to prepare and file with the Commission a registration statement relating to an offering for its own account or the account of others under the Securities Act of any of its equity securities,
other than on Form S-4 or Form S-8 (each as promulgated under the Securities Act) or their then equivalents relating to equity securities to be issued solely in connection with any acquisition of any entity or business or equity securities issuable
in connection with stock option or other employee benefit plans, then the Company shall send to each Holder written notice of such determination and, if within fifteen days after receipt of such notice, any such Holder shall so request in writing,
the Company shall include in such registration statement all or any part of such Registrable Securities such holder requests to be registered to the extent the Company may do so without violating registration rights of others which exist as of the
date of this Agreement, subject to customary underwriter cutbacks subject to obtaining any required the consent of any selling stockholder(s) to such inclusion under such registration statement. 
  
 (d) Amendments and Waivers. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the same shall be in writing and signed by the Company and the Holders
of the then outstanding Registrable Securities. Notwithstanding the foregoing, a waiver or consent to depart from the provisions hereof with respect to a matter that relates exclusively to the rights of certain Holders and that does not directly or
indirectly affect the rights of other Holders may be given by Holders of at least a majority of the Registrable Securities to which such waiver or consent relates; provided, however, that the provisions of this sentence may not be amended, modified,
or supplemented except in accordance with the provisions of the immediately preceding sentence. 
  
 (e) Notices. Any notice or request hereunder may be given to the Company or Investor at the respective addresses set forth below or as may
hereafter be specified in a notice designated as a change of address under this Section 8(e). Any notice or request hereunder shall be given by registered or certified mail, return receipt requested, hand delivery, overnight mail, Federal Express or
other national overnight next day carrier (collectively, “Courier”) or telecopy (confirmed by mail). Notices and requests shall be, in the case of those by hand delivery, deemed to have been given when delivered to any party to whom it is
addressed, in the case of those by mail or overnight mail, deemed to have been given three (3) business days after the date when deposited in the mail or with the overnight mail carrier, in the case of a Courier, the next business day following
timely delivery of the package 

 with the Courier, and, in the case of a telecopy, when confirmed. The address for such notices and communications shall
be as follows: 
  

			
	 If to the Company:
	  	 Rentech, Inc.
 1331 17th Street, Suite 720

Denver, Colorado 80202
 Attention:
        Ronald C. Butz
 Facsimile:          (303)
298-8010

		
	 If to Investor:
	  	To the address set forth under Investor’s name on the signature page hereto.
		
	 If to any other Person who is then the registered
 Holder:
	  	To the address of such Holder as it appears in the stock transfer books of the Company

  
 or such other address as may be
designated in writing hereafter in accordance with this Section 7(g) by such Person. 
  
 (f) Successors and Assigns. This Agreement shall inure to the benefit of and be binding upon the successors and permitted assigns of each of the parties and shall inure to the benefit of each Holder. The
Company may not assign its rights or obligations hereunder without the prior written consent of each Holder. Each Holder may assign their respective rights hereunder to such persons who become Holders of Registrable Securities in accordance with the
terms of the Warrant. 
  
 (g) Execution and Counterparts.
This Agreement may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original and, all of which taken together shall constitute one and the same Agreement. In the event that any signature is delivered
by facsimile transmission, such signature shall create a valid binding obligation of the party executing (or on whose behalf such signature is executed) the same with the same force and effect as if such facsimile signature were the original
thereof. 
  
 (h) Governing Law. All questions concerning
the construction, validity, enforcement and interpretation of this Agreement shall be governed by and construed and enforced in accordance with the internal laws of the State of Colorado, without regard to the principles of conflicts of law thereof.
Each party agrees that all Proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement shall be commenced exclusively in the state and federal courts sitting in the City of Denver, State of
Colorado. Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of Denver, State of Colorado for the adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any Proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such Proceeding is improper. Each
party hereto hereby irrevocably waives personal service of process and consents to process being served in any such Proceeding by mailing a copy thereof via registered or certified mail or overnight delivery (with evidence of delivery) to such party
at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve
process in any manner permitted by law. Each party hereto hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the
transactions contemplated hereby. If either party shall commence a Proceeding to enforce any provisions of a Transaction Document, then the prevailing party in such Proceeding shall be reimbursed by the other party for its reasonable attorneys fees
and other costs and expenses incurred with the investigation, preparation and prosecution of such Proceeding. 
  
 (i) Severability. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction to be invalid,
illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use
their reasonable efforts to find and employ an alternative means to achieve the same or substantially the same result as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of
the parties that they would have executed the remaining terms, provisions, covenants and restrictions without including any of such that may be hereafter declared invalid, illegal, void or unenforceable. 

 (j) Headings. The headings in this Agreement are for convenience of reference only and shall not
limit or otherwise affect the meaning hereof. 
  
 IN WITNESS
WHEREOF, the parties have executed this Registration Rights Agreement as of the date first written above. 
  

							
	 Rentech, Inc., a Colorado Corporation
	 	 Geduld Capital Management LLC, a limited liability company organized under the laws of the state of
Florida

				
	 By:
	 	 /s/ Dennis L. Yakobson

	 	By:	 	 /s/ Steven Geduld, President

	 Name:
	 	Dennis L. Yakobson	 	 Name:
	 	  

	 Title:
	 	President and Chief Executive Officer	 	 Title:
	 	  

				
	 By:
	 	 /s/ Ronald C. Butz

	 	 	 	 
	 Name:
	 	Ronald C. Butz	 	 	 	 
	 Title:
	 	Secretary	 	 	 	 
		
	 Address for Notices:
	 	Address for Notices:
		
	 Rentech, Inc.
 1331 17th Street, Suite 720
 Denver, CO 80202
	 	 Geduld Capital Management LLC
 19495
Biscayne Blvd., Suite 608
 Aventura, FL 33180

  

 EXHIBIT A 
  

[Month     , 2005] 
  
 [Transfer Agent] 
  

	 	Re:	Rentech, Inc. Registration Statement on Form S-3 

  
 Ladies and Gentlemen: 
  
 As counsel to Rentech, Inc.., a Colorado corporation (the “Company”), we have been requested to render our opinion to you in connection with the
resale by the individuals or entitles listed on Schedule A attached hereto (the “Selling Stockholders”), of an aggregate of [amount] shares (the “Shares”) of the Company’s Common Stock. 
  
 A Registration Statement on Form S-3 under the Securities Act of 1933, as
amended (the “Act”), with respect to the resale of the Shares was declared effective by the Securities and Exchange Commission on [date]. Enclosed is the Prospectus dated [date]. We understand that the Shares are to be
offered and sold in the manner described in the Prospectus. 
  
 Based upon the foregoing, upon request by the Selling Stockholders at any time while the registration statement remains effective, it is our opinion that the Shares have been registered for resale under the Act and new certificates
evidencing the Shares upon their transfer or re-registration by the Selling Stockholders may be issued without restrictive legend. We will advise you if the registration statement is not available or effective at any point in the future. 

 
 Very truly yours, 
  
  
 [Company counsel]

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