SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

RAMSBOTTOM D HUNT JR

(Last)

(First)

(Middle)

10877 WILSHIRE BOULEVARD

SUITE 710

(Street)

LOS ANGELES

90024

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
RENTECH INC /CO/ [ RTK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2006

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/15/2006		F		69,960⁽¹⁾	D	$3.81	380,040⁽²⁾	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Warrant (right to buy)	$1.82							⁽³⁾	08/02/2010	Common Stock	2,870,000		2,870,000	D
Option to Purchase	$4.15							⁽⁴⁾	07/13/2016	Common Stock	250,000		250,000	D

Explanation of Responses:

1. Represents 60,960 shares of common stock withheld by the Company for the payment of the employee's withholding taxes due upon the vesting and settlement of 150,000 shares of common stock pursuant to a restricted stock unit on December 15, 2006.

2. Includes 300,000 shares of common stock issuable upon the vesting and settlement of a restricted stock unit. The restricted stock unit vests and may be settled in 150,000 shares of common stock on each of the December 15, 2007 and December 15, 2008, subject to the reporting person's continued employment with the Company on each such date.

3. Includes warrants to purchase 2,082,500 shares of common stock that have vested and are exercisable and warrants to purchase 787,500 shares of common stock that will vest and become exercisable when the per share market price of the Company's common stock reaches $5.25 for twelve (12) consecutive trading days. The warrants are held by East Cliff Advisors, LLC. Mr. Ramsbottom is the managing member of East Cliff Advisors, LLC and has sole investment and voting power in East Cliff Advisors, LLC. The amounts reported represent the number of warrants in which Mr. Ramsbottom has a pecuniary interest.

4. The option vests in three equal installments of common stock on the first, second and third anniversaries of the grant date (July 14, 2006), subject to reporting person's continued employment with the Company on each such date.

	/s/ D. Hunt Ramsbottom	12/15/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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