UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                 SCHEDULE 13D/A
                                Amendment No. 1

                   Under the Securities Exchange Act of 1934


                                 T-REX OIL, INC.
             ------------------------------------------------------
                                (Name of Issuer)

                        Common Stock, $0.001 per share
             ------------------------------------------------------
                         (Title of Class of Securities)

                                   75188R106
              ------------------------------------------------------
                                (CUSIP Number)

                                 Martin Gottlob
                           520 Zang Street, Suite 250
                              Broomfield, CO 80021
                                 (720) 502-4483
             ------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                  July 15, 2015
                 ---------------------------------------------
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box. /_/

The information required on 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).


CUSIP No. 75188R106

1.   NAMES OF REPORTING PERSONS:

     Martin Gottlob

2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):(a) /_/
                                                                         (b) /_/
3.   SEC USE ONLY:

4.   SOURCE OF FUNDS (SEE INSTRUCTIONS): N/A

5.   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d)
     OR 2(e): /_/

6.   CITIZENSHIP OR PLACE OF ORGANIZATION:

     United States

                             7.  SOLE VOTING POWER:

                                 750,000 Common Shares; 100,000 Options (1)
      NUMBER OF SHARES
      BENEFICIALLY OWNED     8.  SHARED VOTING POWER:
      BY EACH REPORTING
      PERSON WITH                0

                             9.  SOLE DISPOSITIVE POWER:

                                 750,000 Common Shares; 100,000 Options (1)

                             10. SHARED DISPOSITIVE POWER:

                                 0

11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

     750,000 shares of Commons Stock; 100,000 Options (1)

12.  CHECK IF THE  AGGREGATE  AMOUNT IN ROW (11)  EXCLUDES  CERTAIN  SHARES (SEE
     INSTRUCTIONS): /_/

13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

     4.7% Common Stock; 5.3% if Options are exercised (1)

14.  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

     IN
----------------

(1)  Options are  exercisable  at $0.10 per share and have an  issuance date of
     11/15/2014, an expiration date of 11/15/2017, and are fully vested.

                                      -1-


ITEM 1. SECURITY AND ISSUER
---------------------------

The security for which this report is made is the common stock, par value $0.001
per share,  of T-Rex Oil, Inc. fka Rancher Energy Corp., a Colorado  corporation
(the "Issuer").

ITEM 2. IDENTITY AND BACKGROUND.
--------------------------------

This amendment on Schedule 13D/A is being filed on behalf of Martin Gottlob,  an
individual.  He is filing such amendment as a result of his ownership decreasing
below 5%. The address of Mr. Gottlob is 520 Zang Street,  Suite 250, Broomfield,
CO 80021.

Mr.  Gottlob was  appointed a Director of T-Rex Oil, Inc. on August 19, 2014 and
has served as Vice President of Geology of Terex Energy Corp. since March 2014.

MARTIN R. GOTTLOB, AGE 63, DIRECTOR

Mr. Gottlob is an experienced Rocky Mountain States  geologist,  and operator of
oil and gas wells. He has a B.A. in Geology from the University of Colorado with
an emphasis in petroleum  exploration  and  sedimentary  basin  analysis,  and a
Master of Science from the Colorado  School of Mines,  in oil and gas operations
research,  and management science of oil and gas investment projects.  He is the
owner of Independence  Oil II, LLC, where he has developed,  drilled,  completed
and operated wells on behalf of sixteen clients.

Since 2004 he has been  responsible  for  exploration  and operations for Edward
(Tiger)  Mike  Davis'  oil  properties  (Davis  Oil  Co.),  where  he  has  been
responsible for many phases of field  development in the D-J Basin, in Colorado,
Wyoming,  and  Nebraska.  He has worked in  similar  capacities  for  Petrogulf,
Minoco, Decalta, Resource Technology and Mountain Minerals all in Colorado since
1979.  Mr.  Gottlob has been a Director and Vice  President of Geology for Terex
Energy Corp since March 2014. As a disclosure item, Mr. Gottlob was convicted of
a felony in Colorado (domestic violence), in 1999.

Mr.  Gottlob has not,  during the last five years,  been convicted in a criminal
proceeding (excluding traffic violations or similar misdemeanors).

Mr.  Gottlob  has not,  during  the  last  five  years,  been a party to a civil
proceeding of a judicial or administrative body of competent jurisdiction and as
a result of such  proceeding  was or is subject to a  judgment,  decree or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  federal or state  securities  laws or finding any  violation  with
respect to such laws.

Mr. Gottlob is a citizen of the United States of America.


ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
---------------------------------------------------------

On February 12, 2014,  Mr.  Gottlob was issued 750,000 shares of common stock of
Terex Energy Corp.  Mr.  Gottlob was  appointed a Director of T-Rex Oil, Inc. in
August  2014.  On  December  22,  2014,  T-Rex Oil,  Inc.  acquired  100% of the
outstanding  stock of Terex Energy Corp. after exchanging  7,385,700 shares with
Terex  Energy  Corp.  shareholders  on a one for one basis.  In  addition to the
exchange of common stock, the Company exchanged with Mr. Gottlob 100,000 Options
on a one for one basis with an exercise price of $0.10 per share and a term of 3
years.

ITEM 4. PURPOSE OF TRANSACTION
------------------------------

Mr.  Gottlob is sole owner of the  750,000  shares  and  100,000  Options of the
Company and as such has the ability to vote the shares. In addition, Mr. Gottlob
is Director of T-Rex Oil and Vice President of Geology of Terex Energy Corp., as
such Mr. Gottlob may influence the following which relate to, or could result in
the  matters  referred  to in  paragraphs  (a) through  (j),  inclusive,  of the

                                      -2-

instructions to Item 4 of Schedule 13D as follows:  a) acquisitions of prospects
which  continue  for Issuer,  based on the business  judgment of the  continuing
board of  directors  b) the  reporting  person  intends to  formulate  a plan to
recapitalize  the Issuer  for at least  $10,000,000,  (although  there can be no
assurance  that the Issuer will  successfully  achieve that, or any,  additional
debt or equity  capitalization) d) authorization of preferred stock will require
amendments to the Articles of Incorporation.

The  Reporting  Person  may,  at any  time  and from  time to  time,  review  or
reconsider  their position  and/or change his purpose and/or  formulate plans or
proposals with respect thereto.


ITEM 5. INTEREST IN SECURITIES OF THE ISSUER
--------------------------------------------

The  percentages of outstanding  shares of T-Rex Oil, Inc. common stock reported
below are based on the statement that as of July 15, 2015, there were 15,771,142
shares of T-Rex Oil, Inc. common stock outstanding.

     (a) Mr.  Gottlob  beneficially  owns or may be deemed to  beneficially  own
shares of T-Rex Oil, Inc. common stock as follows:

                                    No. of Shares            % of Class
                                    -----------------        -------------
         Common Shares              750,000                  4.7%
                                    -----------------        -------------
                                    750,000                  4.7%

     (b) For  information  regarding  the  number of shares of T-Rex  Oil,  Inc.
common stock as to which Mr.  Gottlob  holds or shares or may be deemed to hold,
reference  is made to items (7) - (12) of the cover page for this  statement  on
Schedule 13D.

     (c) Other  than as set forth  herein,  there have been no  transactions  in
shares of T-Rex Oil, Inc.  common stock  effected by Mr. Gottlob during the past
60 days.

     (d) No other  person  has the right to  receive  or the power to direct the
receipt of dividends from, or the proceeds from the sale of, such securities.

     (e) The date on which the  reporting  person  ceased to be the  beneficiary
owner of more than five percent of the class of securities: July 15, 2015


ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
SECURITIES OF THE ISSUER.
--------------------------------------------------------------------------------

Mr.  Gottlob has no contracts,  arrangements,  understandings  or  relationships
(legal or otherwise)  with other persons with respect to the securities of T-Rex
Oil, Inc., other than as described in this statement on Schedule 13D.


ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.
-----------------------------------------

Not Applicable



                                      -3-




                                   SIGNATURES

After  reasonable  inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.



                                       Date: July 28, 2015




                                       /s/ Martin R. Gottlob
                                       ---------------------------------
                                       Martin Gottlob, Individual



































                                      -4-