SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Natural Gas Systems, Inc.
------------------------------------------------------
(Name of Issuer)
COMMON STOCK
------------------------------------------------------
(Title of Class of Securities)
63887P100
------------------------------------------------------
(CUSIP NUMBER)
January 12, 2006
------------------------------------------------------
(Date of event which requires filing of this statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[ ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ] Rule 13d-1(d)
The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
notes).
Page 1 of 14 Pages
CUSIP No. 60443P103 13G Page 2 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Rubicon Master Fund
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Cayman Islands
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
----------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000(see Item 4)
OWNED BY
----------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
----------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000(see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4))
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
OO
-----------------------------------------------------------------------
** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 60443P103 13G Page 3 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Rubicon Fund Management Ltd.
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
Cayman Islands
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
OO
-----------------------------------------------------------------------
** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 60443P103 13G Page 4 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Rubicon Fund Management LLP
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United Kingdom
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
OO
-----------------------------------------------------------------------
** SEE INSTRUCTIONS BEFORE FILLING OUT!
CUSIP No. 60443P103 13G Page 5 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Paul Anthony Brewer
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United Kingdom
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------
CUSIP No. 60443P103 13G Page 6 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Jeffrey Eugene Brummette
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------
CUSIP No. 60443P103 13G Page 7 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
William Francis Callanan
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------
CUSIP No. 60443P103 13G Page 8 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Vilas Gadkari
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
-----------------------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------
CUSIP No. 60443P103 13G Page 9 of 14 Pages
-----------------------------------------------------------------------
(1) NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO.
OF ABOVE PERSONS (ENTITIES ONLY)
Horace Joseph Leitch III
-----------------------------------------------------------------------
(2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
(a) [ ]
(b) [X]
-----------------------------------------------------------------------
(3) SEC USE ONLY
-----------------------------------------------------------------------
(4) CITIZENSHIP OR PLACE OF ORGANIZATION
United States
-----------------------------------------------------------------------
NUMBER OF (5) SOLE VOTING POWER
-0-
SHARES
--------------------------------------------------------
BENEFICIALLY (6) SHARED VOTING POWER
1,360,000 (see Item 4)
OWNED BY
--------------------------------------------------------
EACH (7) SOLE DISPOSITIVE POWER
-0-
REPORTING
--------------------------------------------------------
PERSON WITH (8) SHARED DISPOSITIVE POWER
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(9) AGGREGATE AMOUNT BENEFICIALLY OWNED
BY EACH REPORTING PERSON
1,360,000 (see Item 4)
-----------------------------------------------------------------------
(10) CHECK BOX IF THE AGGREGATE AMOUNT
IN ROW (9) EXCLUDES CERTAIN SHARES **
[ ]
-----------------------------------------------------------------------
(11) PERCENT OF CLASS REPRESENTED
BY AMOUNT IN ROW (9)
5.5%
-----------------------------------------------------------------------
(12) TYPE OF REPORTING PERSON **
IN
-----------------------------------------------------------------------
CUSIP No. 60443P103 13G Page 10 of 14 Pages
Item 1.
(a) Name of Issuer
Natural Gas Systems, Inc. a Nevada corporation (the "Company").
(b) Address of Issuer's Principal Executive Offices:
820 Gessner, Suite 1340
Houston, Texas
77024
Item 2(a). Name of Person Filing
This statement is filed by (i) Rubicon Master Fund;
(ii) Rubicon Fund Management Ltd., with respect to shares beneficially owned by
Rubicon Master Fund; (iii) Rubicon Fund Management LLP, with respect to shares
beneficially owned by Rubicon Master Fund; (iv) Paul Anthony Brewer, with
respect to shares beneficially owned by Rubicon Master Fund; (v) Jeffrey Eugene
Brummette, with respect to shares beneficially owned by Rubicon Master Fund;
(vi) William Francis Callanan with respect to shares beneficially owned by
Rubicon Master Fund; (vii) Vilas Gadkari with respect to shares beneficially
owned by Rubicon Master Fund; and (ix) Horace Joseph Leitch III, with respect to
shares beneficially owned by Rubicon Master Fund.
Item 2(b). Address of Principal Business Office
The address of (i) Rubicon Master Fund is P.O. Box 309,
Ugland House, George Town, Cayman Islands, (ii) Rubicon Fund Management Ltd. is
P.O. Box 309, Ugland House, George Town, Cayman Islands, (iii) Rubicon Fund
Management LLP is 103 Mount St., London W1K2TJ, United Kingdom and (iv) each of
the individuals is 103 Mount St., London W1K2TJ, United Kingdom.
Item 2(c) Citizenship
Rubicon Master Fund and Rubicon Fund Management Ltd. are
companies organized under the laws of the Cayman Islands. Rubicon Fund
Management LLP is a Limited Liability Partnership organized under the laws of
the United Kingdom. Jeffrey Eugene Brummette, William Francis Callanan, Vilas
Gadkari and Horace Joseph Leitch III are citizens of the United States. Paul
Anthony Brewer is a citizen of the United Kingdom.
(d) Title of Class of Securities
Common Stock, $0.001 par value ("Common Stock")
(e) CUSIP Number 63887P100
Item 3. Not applicable
Item 4. Ownership
(a) Amount Beneficially Owned
The percentages used herein are calculated based upon the 24,788,364 shares
of Common Stock issued and outstanding as of January 12, 2006 according to the
Securities Purchase Agreement entered into among the Company and Rubicon Master
Fund.
As of the close of business on January 26, 2006
CUSIP No. 60443P103 13G Page 11 of 14 Pages
1. Rubicon Master Fund
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
2. Rubicon Fund Management Ltd.
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
3. Rubicon Fund Management LLP
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
4. Paul Anthony Brewer
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
5. Jeffrey Eugene Brummette
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
6. William Francis Callanan
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
7. Vilas Gadkari
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
CUSIP No. 60443P103 13G Page 12 of 14 Pages
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
8. Horace Joseph Leitch III
(a) Amount beneficially owned: 1,360,000
(b) Percent of class: 5.5%
(c)
(i) Sole power to vote or direct the vote: -0-
(ii) Shared power to vote or direct the vote 1,360,000
(iii) Sole power to dispose or direct the disposition: -0-
(iv) Shared power to dispose or direct the disposition: 1,360,000
Rubicon Fund Management Ltd., Rubicon Fund Management LLP, Paul Anthony
Brewer, Jeffrey Eugene Brummette, William Francis Callanan, Vilas Gadkari,
Horace Joseph Leitch III, own directly no shares of Common Stock. Pursuant to
Investment Agreements, each of Rubicon Fund Management Ltd., and Rubicon Fund
Management LLP share all investment and voting power with respect to the
Securities held by Rubicon Master Fund. By reason of the provisions of Rule
13D-3 of the Securities Exchange Act of 1934, as amended, each of Rubicon Fund
Management Ltd., Rubicon Fund Management LLP, Paul Anthony Brewer, Jeffrey
Eugene Brummette, William Francis Callanan, Vilas Gadkari, and Horace Joseph
Leitch III may be deemed to own beneficially 1,360,000 shares of Common Stock
(constituting approximately 5.5% the shares of Common Stock outstanding). Each
of Rubicon Fund Management Ltd., Rubicon Fund Management LLP, Paul Anthony
Brewer, Jeffrey Eugene Brummette, William Francis Callanan, Vilas Gadkari, and
Horace Joseph Leitch III disclaim beneficial ownership of any securities covered
by this statement.
Item 5. Ownership of Five Percent or Less of a Class
Not applicable.
Item 6. Ownership of More than Five Percent on Behalf of Another Person.
Not applicable.
Item 7. Identification and Classification of the Subsidiary Which Acquired
the Security Being Reported on By the Parent Holding Company
Not applicable.
Item 8. Identification and Classification of Members of the Group
This statement is filed by:
Not Applicable
Item 9. Notice of Dissolution of Group
Not applicable
Item 10. Certification
By signing below each of the undersigned certifies that, to the best of its
knowledge and belief, the securities referred to above were not acquired and are
not held for the purpose of or with the effect of changing or influencing the
control of the issuer of the securities and were not acquired and are not held
in connection with or as a participant in any transaction having that purpose or
effect.
CUSIP No. 60443P103 13G Page 13 of 14 Pages
SIGNATURE
After reasonable inquiry and to the best of its knowledge and belief, each of
the undersigned certifies that the information with respect to it set forth in
this statement is true, complete, and correct.
Dated: January 26, 2006
RUBICON MASTER FUND
by: Rubicon Fund Management, L.P. its investment manager
By: /s/ Horace Joseph Leitch III
--------------------------------------
Name: Horace Joseph Leitch III
Title: Authorized Person
RUBICON FUND MANAGEMENT LTD.
By: /s/ David DeRosa
--------------------------------------
Name: David DeRosa
Title: Authorized Person
RUBICON FUND MANAGEMENT LLP
By: /s/ Horace Joseph Leitch III
--------------------------------------
Name: Horace Joseph Leitch III
Title: Authorized Person
PAUL ANTHONY BREWER
By: /s/ Paul Anthony Brewer
--------------------------------------
Name: Paul Anthony Brewer
JEFFREY EUGENE BRUMMETTE
By: /s/ Jeffrey Eugene Brummette
--------------------------------------
Name: Jeffrey Eugene Brummette
WILLIAM FRANCIS CALLANAN
By: /s/ William Francis Callanan
--------------------------------------
Name: William Francis Callanan
VILAS GADKARI
By: /s/ Vilas Gadkari
--------------------------------------
Name: Vilas Gadkari
CUSIP No. 60443P103 13G Page 14 of 14 Pages
HORACE JOSEPH LEITCH III
By: /s/ Horace Joseph Leitch III
--------------------------------------
Name: Horace Joseph Leitch III