Amended Statement of Ownership (sc 13g/a)

Date : 06/05/2019 @ 9:14PM
Source : Edgar (US Regulatory)
Stock : Basic Energy Services Inc New (BAS)
Quote : 1.96  0.09 (4.81%) @ 10:59PM

Amended Statement of Ownership (sc 13g/a)

Washington, D.C. 20549



Basic Energy Services Inc

(Name of Issuer)


(Title of Class of Securities)


(CUSIP Number)

December 31, 2018

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] 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).

CUSIP No. 06985P209

     1.   Names of Reporting Persons.
          I.R.S. Identification Nos. of above persons (entities only).

          Dimensional Fund Advisors LP (Tax ID: 30-0447847)

     2.   Check the Appropriate Box if a Member of a Group (See Instructions)

          (b)  X

     3.   SEC Use Only

     4.   Citizenship or Place of Organization

          Delaware Limited Partnership

                   5.    Sole Voting Power
Number of Shares         2120260 **see Note 1**
Owned by           6.    Shared Voting Power
Each Reporting           0
Person With
                   7.    Sole Dispositive Power
                         2207229 **see Note 1**

                   8.    Shared Dispositive Power

     9.   Aggregate Amount Beneficially Owned by Each Reporting Person

          2207229 **see Note 1**

     10.  Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See


     11.  Percent of Class Represented by Amount in Row (9)


     12.  Type of Reporting Person (See Instructions)


Item 1.

         (a)      Name of Issuer

                  Basic Energy Services Inc

         (b)      Address of Issuer's Principal Executive Offices

                  801 Cherry Street
                  Suite 2100, Unit #21
                  Fort Worth, TX 76102

Item 2.

         (a)      Name of Person Filing

                  Dimensional Fund Advisors LP

         (b)      Address of Principal Business Office, or if none, Residence

                  Building One
                  6300 Bee Cave Road, Austin, TX 78746

         (c)      Citizenship

                  Delaware Limited Partnership

         (d)      Title of Class of Securities

                  Common Stock

         (e)      CUSIP Number


Item 3.  If  this  statement  is  filed  pursuant to Sec. 240.13d-1(b)  or
     240.13d-2(b) or (c), check whether the person filing is a:

     (a)  [ ]  Broker or dealer registered under section 15 of the Act
               (15 U.S.C. 78o);

     (b)  [ ]  Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

     (c)  [ ]  Insurance  company as defined in section  3(a)(19) of the Act (15
               U.S.C. 78c);

     (d)  [ ]  Investment company registered  under section 8 of the Investment
               Company Act of 1940 (15 U.S.C. 80a-8);

     (e)  [X]  An  investment  adviser  in  accordance  with Sec. 240.13d-1(b)

     (f)  [ ]  An employee benefit plan or endowment fund in accordance  with
               Sec. 240.13d-1(b)(1)(ii)(F);

     (g)  [ ]  A parent holding company or control person in accordance with
               Sec. 240.13d-1(b)(1)(ii)(G);

     (h)  [ ]  A savings associations as defined in Section 3(b) of the Federal
               Deposit Insurance Act (12 U.S.C. 1813);

     (i)  [ ]  A church plan that is excluded from the definition of an
               investment  company  under  section 3(c)(14) of the Investment
               Company Act of 1940 (15 U.S.C. 80a-3);

     (j)  [ ]  Group, in accordance with Sec. 240.13d-1(b)(1)(ii)(J).

Item 4.  Ownership

Provide the following information regarding the aggregate number and percentage
of the class of securities of the issuer identified in Item 1.

     (a)  Amount beneficially owned:    2207229 **see Note 1**

     (b)  Percent of class:               8.31%

     (c)  Number of shares as to which the person has:

          (i)   Sole power to vote or to direct the vote

                2120260  **see Note 1**

          (ii)  Shared power to vote or to direct the vote


          (iii) Sole power to dispose or to direct the disposition of

                2207229 **see Note 1**

          (iv)  Shared power to dispose or to direct the disposition of


** Note 1 ** Dimensional Fund Advisors LP, an investment adviser registered
under Section 203 of the Investment Advisors Act of 1940, furnishes investment
advice to four investment companies registered under the Investment Company Act
of 1940, and serves as investment manager or sub-adviser to certain
other commingled funds, group trusts and separate accounts (such
investment companies, trusts and accounts, collectively referred to as the
"Funds").  In certain cases, subsidiaries of Dimensional Fund Advisors LP
may act as an adviser or sub-adviser to certain Funds. In its role as
investment adviser, sub-adviser and/or manager, Dimensional Fund Advisors
LP or its subsidiaries (collectively, "Dimensional") may possess voting
and/or investment power over the securities of the Issuer that are owned
by the Funds, and may be deemed to be the beneficial owner of the shares of
the Issuer held by the Funds.  However, all securities reported in this
schedule are owned by the Funds.  Dimensional disclaims beneficial ownership
of such securities.  In addition, the filing of this Schedule 13G shall not
be construed as an admission that the reporting person or any of its
affiliates is the beneficial owner of any securities covered by this Schedule
13G for any other purposes than Section 13(d) of the Securities Exchange Act
of 1934.

Item 5.  Ownership of Five Percent or Less of a Class

If this  statement is being filed to report the fact that as of the date hereof
the  reporting  person has ceased to be the  beneficial owner of more than five
percent of the class of securities, check the following [].

Item 6.  Ownership of More Than Five Percent on Behalf of Another Person

The Funds described in Note 1 above have the right to receive or the power to
direct the receipt of dividends from, or the proceeds from the sale of the
securities held in their respective accounts. The U.S. Small Cap Value
Portfolio of DFA Investment Dimensions Group Inc., managed by Dimensional,
had interest of more than 5% in the common shares as of December 31, 2018.
To the knowledge of Dimensional, the interest of other Funds did not exceed
5% of the class of securities. Dimensional Fund Advisors LP disclaims
beneficial ownership of all such securities.

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security  Being  Reported on By the Parent Holding Company or Control


Item 8.  Identification and Classification of Members of the Group


Item 9.  Notice of Dissolution of Group


Item 10. Certification

     By signing below I certify that, to the best of my knowledge and belief,
     the securities referred to above were acquired and are held in the ordinary
     course of business and 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,
     other than activities solely in connection with a nomination under
     Sec. 240.14a-11.


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.

                                 DIMENSIONAL FUND ADVISORS LP

                                 June 5, 2019

                                 By: Dimensional Holdings Inc., General Partner

                                 /s/ Christopher Crossan

                                 Global Chief Compliance Officer

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