Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * REGAN WILLIAM C	2. Date of Event Requiring Statement (MM/DD/YYYY) 4/8/2016	3. Issuer Name and Ticker or Trading Symbol RENTECH, INC. [RTK]
(Last)        (First)        (Middle) 10877 WILSHIRE BLVD. 10TH FLOOR	4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                            _____ 10% Owner ___ X ___ Officer (give title below)          _____ Other (specify below) VP, Corporate Controller /
(Street) LOS ANGELES, CA 90024        (City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)	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 Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	4616	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option for Common Stock	(1)	10/4/2020	Common Stock	1770	$8.90	D
Performance Stock Units	(2)	12/14/2018	Common Stock	1361	$0	D
Restricted Stock Units	(3)	12/14/2016	Common Stock	539	$0	D

Explanation of Responses:
( 1)	The option vested in three equal installments of common stock on the first, second and third anniversaries of the vesting start date (October 4, 2010).
( 2)	The reporting person is entitled to earn a number of performance stock units ("PSUs") based on the issuer's total shareholder return ("TSR") as measured on the third anniversary of December 14, 2014 (the "Vesting Start Date"). The number of PSUs set forth in the table represents the target number of PSUs that may be earned (the "Target PSUs"). A minimum TSR increase of 50% is required for any PSUs to be earned. Subject to the reporting person's continued service, the reporting person may earn 50% - 200% of the Target PSUs for a TSR increase of 50% - 200% on the third anniversary of the Vesting Start Date. Any PSUs that are not earned on the third anniversary may vest on the fourth anniversary based on the increase in the TSR over the full four-year period. Upon any vesting, each PSU that has been earned is settled for one share of common stock.
( 3)	Each restricted stock unit represents a contingent right to receive one share of common stock. One-third of the restricted stock units vested on each of December 14, 2014 and December 14, 2015, respectively, and the remaining one-third of the restricted stock units vest on December 14, 2016, subject to the reporting person's continued employment with the Company on such date.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
REGAN WILLIAM C 10877 WILSHIRE BLVD. 10TH FLOOR LOS ANGELES, CA 90024			VP, Corporate Controller

Signatures
/s/ William C. Regan		4/29/2016
** 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 5(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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.