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

FORM
10-K/A
(Amendment No. 1)

(Mark One)

| | x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934
| | - | ------------------------------------------------------------------------------------

For
the fiscal year ended December 31, 2013

OR

| | o | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
| | - | ----------------------------------------------------------------------------------------



For the transition
period from                   to

Commission
file number 814-00672



NGP CAPITAL RESOURCES
COMPANY

(Exact name of registrant
as specified in its charter)



|Maryland                                                    |  | 20-1371499                            
|----------------------------------------------------------- |  | --------------------------------------
|State or other jurisdiction ofincorporation or organization |  | (I.R.S. EmployerIdentification Number)



|909 Fannin
        Street, Suite 3800
        Houston,
        Texas |  | 77010     
|-------------------------------------------------------------------- |  | ----------
|(Address of principal executive offices)                             |  | (Zip Code)



(713) 752-0062

Registrant’s telephone
number, including area code

Securities registered
pursuant to Section 12(b) of the Act:



|Common Stock, Par Value $.001 per share |  | NASDAQ Global Select Market                
|--------------------------------------- |  | -------------------------------------------
|(Title of each class)                   |  | (Name of each exchange on which registered)

Securities registered
pursuant to Section 12(g) of the Act: None



Indicate by check mark if the registrant
is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  ̈ No T

Indicate by check mark if the registrant
is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes  ̈ NoT

Indicate by check mark whether the registrant
(1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding
12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes T No £

Indicate by check mark whether the registrant
has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted
and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter
period that the registrant was required to submit and post such files). Yes £
No £

Indicate by check mark if disclosure of
delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s
knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment
to this Form 10-K. T

Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions
of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2
of the Exchange Act.



|Large accelerated filer  ̈ |  | Accelerated filer T |  | Non-accelerated filer  ̈                       |  | Smaller reporting company  ̈
|------------------------- |  | ------------------- |  | --------------------------------------------- |  | ---------------------------
|                          |  |                     |  | (Do not check if a smaller reporting company)



Indicate by check mark whether the registrant
is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes  ̈ No T

As of June 28, 2013, the aggregate market
value of the registrant’s common stock held by non-affiliates of the registrant was $119,168,136 based on the closing sale
price of the registrant’s common stock on the NASDAQ Global Select Market on that date.

As of April 28, 2014, there were 20,499,188
shares of the registrant’s common stock outstanding.



DOCUMENTS INCORPORATED
BY REFERENCE

Certain exhibits previously filed with the
Securities and Exchange Commission are incorporated by reference into Part IV of this report.









NGP CAPITAL RESOURCES
COMPANY



TABLE OF CONTENTS



|EXPLANATORY NOTE                                                                                         | 1 
|-------------------------------------------------------------------------------------------------------- | --
|PART III.                                                                                                | 2 
|Item 10. Directors, Executive Officers and Corporate Governance.                                         | 2 
|Item 11. Executive Compensation.                                                                         | 7 
|Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. | 10
|Item 13. Certain Relationships and Related Transactions.                                                 | 11
|Item 14. Principal Accountant Fees and Services.                                                         | 12
|PART IV.                                                                                                 | 13
|Item 15. Exhibits, Financial Statement Schedules.                                                        | 13
|SIGNATURES                                                                                               | 14
|INDEX TO EXHIBITS                                                                                        | 15











EXPLANATORY NOTE



This Amendment No. 1 to Form 10-K (this
“Form 10-K/A”) amends the Annual Report on Form 10-K for the year ended December 31, 2013 originally filed on March
10, 2014 (the “Original Report”) by NGP Capital Resources Company (the “Company,” “we,” “our”
or “us”). We are filing this Form 10-K/A to present the information required by Part III of the Form 10-K as we will
not file a definitive proxy statement within 120 days of the end of our fiscal year ended December 31, 2013. Terms previously
defined in the Original Report have the same meanings in this Form 10-K/A.



Also included in this Form 10-K/A are (i)
the signature page, (ii) certifications required of the principal executive officer and principal financial officer under Section
302 of the Sarbanes-Oxley Act of 2002 and (iii) Part IV of the Form 10-K, which has been included solely to allow for filing of
the additional certifications. Because no financial statements are contained within this Form 10-K/A, we are not including certifications
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.



Except as described above, no other changes
have been made to the Original Report. Other than the information specifically amended and restated herein, this Form 10-K/A does
not reflect events occurring after March 10, 2014, the date of the Original Report, or modify or update those disclosures that
may have been affected by subsequent events. Accordingly, this Form 10-K/A should be read in conjunction with our Original Report
and our other filings made with the Securities and Exchange Commission subsequent to the filing of the Original Report.



1







PART
III.



Item 10. Directors, Executive Officers and Corporate Governance.



The Board is divided into three classes,
which we refer to as Class I, Class II and Class III directors. At each annual meeting of stockholders, a class of directors is
elected for a term expiring at the annual meeting in the third year following the year of election. Each director holds office
until his successor is elected and qualified.



Our restated articles of incorporation,
or our charter, provides that we will have five directors, which number may be increased or decreased by the Board pursuant to
our bylaws. There are currently five directors, including three independent directors.



All of our directors bring to our Board
a wealth of executive leadership experience derived from their service as executives. They also all bring extensive board experience.
Our directors are highly educated and have diverse backgrounds and talents and extensive track records of success in what we believe
are highly relevant positions with reputable organizations. Certain individual qualifications and skills of our directors that
contribute to the Board’s effectiveness as a whole are described below.



Current Board of
Directors

|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF   
|------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------
|Name, Address and Age                                                                                  |  | Position(s)Held withCompany                                                                            |  | Term of Officeand Length ofTime Served                                                                 |  | Principal Occupation(s)During Past 5 Years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | Other Directorships Held by Director or Nominee for Director Presently and During the Past Five Years (1)
|Independent Directors                                                                                  |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 
|Edward W. Blessing
8235 Douglas Ave.,
Suite 1325
Dallas, Texas 75225
  
Age 77                         |  | Director                                                                                               |  | Term expires
2014; director
since 2004                                                                 |  | Mr. Blessing is the Managing Director and founder of Blessing Petroleum Group, LLC which advises and assists in the implementation of energy-related natural resource projects. Mr. Blessing has been involved with the firm since its formation in 1989. In addition, Mr. Blessing is a member of the San Diego State University Campanile Foundation. As a director of the Foundation, he serves on the Finance and Investment Committee and the Audit Committee. Mr. Blessing is a National Association of Corporate Directors (NACD) Board Leadership Fellow. |  | None                                                                                                     
|                                                                                                       |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                          
|Lon C. Kile
808 Huntington Court
Southlake, Texas 76092
  
Age 58                                      |  | Director                                                                                               |  | Term expires
2015; director
since 2008                                                                 |  | Mr. Kile has been active in the energy industry for over thirty years. He retired as the Chief Financial Officer of Energy Transfer Company (now Energy Transfer Partners, L.P. and Energy Transfer Equity, L.P.) in 2004. Prior to Energy Transfer, he served as Director, President and Chief Operating Officer of Prize Energy Corp. from 1999 – 2002.                                                                                                                                                                                                         |  | None                                                                                                     
|                                                                                                       |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                          





2









|William K. White
112 Barranca Drive 
Santa Fe, New Mexico 87501
  
Age 72                                       |  | Director                                                                                               |  | Term expires
2016; director
since 2012                                                                 |  | Mr. White has been active in the energy industry for over 30 years. He is a retired oil and gas executive. From May 2005 to September 2007, he served as an independent director and member of the audit and compensation committees of the board of directors of Teton Energy Corporation, a public company. From July 2008 through December 2008, Mr. White served as independent director, audit committee Chairman and member of the compensation committee of CRC-Evans International, Inc., an affiliate of a portfolio company of NGP Energy Capital Management, LLC. From September 1996 to November 2002, Mr. White was Vice President, Finance and Administration and Chief Financial Officer for Pure Resources, Inc., an NYSE-listed independent oil and gas producer. |  | Presently:
        Eagle Rock
        Energy Partners, L.P. and Resolute Energy Corporation                                                                                                                                                                                                      
|--------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF          |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF                                                                                                                                                                                           
|Interested Directors (2)                                                                                        |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 
|David R. Albin
100 N. Guadalupe Street,
Suite 205
Santa Fe, NM 87501
  
Age 54                                  |  | Director                                                                                               |  | Term expires
2015; director
since 2004                                                                 |  | Mr. Albin is a director of NGP Energy Capital Management, LLC and has been involved with the NGP funds since the inception of the initial fund in 1988.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  | Presently:
        RSP Permian Inc.
        
        During the past five years:
        Energy Transfer
        Partners, L.P. and
        Energy Transfer
        Equity, L.P.                                                                                                                 
|                                                                                                                |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |  |                                                                                                                                                                                                                                                                                                  
|Kenneth A. Hersh
        5221 N. O'Connor Blvd., Suite 1100
        Irving, TX 75039 
          
        Age 51 |  | Director,
Chairman
of the
Board                                                                        |  | Term expires
2016; director
since 2004                                                                 |  | Mr. Hersh is the Co-Founder and Chief Executive Officer of NGP Energy Capital Management, LLC and a Managing Partner of the Natural Gas Partners Funds.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  | Presently:
        Memorial
        Production Partners, LP
          During the pastfive years:
        Eagle Rock Energy
        Partners, L.P.,
        Energy Transfer
        Partners, L.P.,
        Energy Transfer
        Equity, L.P., and
        Resolute Energy
        Corporation,



| | (1) | No director otherwise serves as a director of an investment company subject to the 1940 Act.                                                                                                                  
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (2) | Director is an “interested director” (as defined in the 1940 Act). Mr. Albin and Mr. Hersh are deemed to be interested directors by reason of their affiliations with our manager, NGP Investment Advisor, LP.



3









Information
About Our Executive Officers



|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Name, Address and Age                                                                                  |  | Position(s) Heldwith Company                                                                           |  | Term of Officeand Length ofTime Served                                                                 |  | Principal Occupation(s)During Past 5 Years                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Stephen K. Gardner
909 Fannin,
Suite 3800
Houston, Texas 77010
  
Age: 54                              |  | President and
Chief Executive
Officer                                                                  |  | One year;
President and
CEO since
2011                                                                 |  | Mr. Gardner has served as our President
        and Chief Executive Officer since February 2011. From December 2005 to June 2011, he served as our Chief Financial Officer and
        Treasurer. From September 2006 to June 2011, he served as our Corporate Secretary. From October 2005 to December 2005, he served
        as our Director of Finance. From September 2002 to May 2004, he was Chief Financial Officer of Dunhill Resources, Inc., a privately-held
        oil and natural gas production company. Prior to September 2002, Mr. Gardner served as president of a private construction firm
        and as Chief Financial Officer of Mesa, Inc., the predecessor to Pioneer Natural Resources.
|L. Scott Biar
909 Fannin,
Suite 3800
Houston, Texas 77010
  
Age: 51                                   |  | Chief Financial
Officer,
Secretary,
Treasurer and
Chief
Compliance
Officer                             |  | One year;
Officer since
2011                                                                           |  | Mr. Biar has served as our Chief Financial Officer, Secretary, Treasurer and Chief Compliance Officer since June 2011. He previously served as Vice President and Controller of BJ Services Company from 2007 through 2010, and served in various senior financial roles at Stewart & Stevenson Services, Inc., including as Controller and Chief Accounting Officer from 2002 through 2006, as Chief Financial Officer, Treasurer and Controller in 2006, and in a transitional integration role from 2006 to 2007 after the sale of the company to Armor Holdings, Inc.                                                                                                                                           
|                                                                                                       |  |                                                                                                        |  |                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     



Section 16(a) Beneficial
Ownership Reporting Compliance



Under the federal securities laws, our directors,
executive (and certain other) officers and any persons holding more than ten percent of our common stock are required to report
their ownership of our common stock and any changes in that ownership to us and the SEC. Specific due dates for these reports have
been established by regulation, and we are required to report any failure to file by these dates in 2013. To our knowledge, based
solely on a review of the copies of beneficial ownership reports furnished to us and written representations that no other reports
were required, during the year ended December 31, 2013, all of our directors, officers and more than 10 percent beneficial owners
complied with all applicable Section 16(a) filing requirements.



Meetings of the Board
of Directors and Committees



The Board provides overall guidance and
supervision with respect to our operations and performs the various responsibilities imposed on the directors of business development
companies by the 1940 Act. Among other things, the Board supervises our management arrangements, the custodial arrangements with
respect to portfolio securities, the selection of accountants, fidelity bonding and transactions with affiliates. All actions taken
by the Board are taken by majority vote unless a higher percentage is required by law or unless the 1940 Act or our charter or
bylaws require that the actions be approved by a majority of the directors who are not “interested persons” (as defined
in the 1940 Act).



During 2013, the Board met 16 times. Each
director attended at least 75% of all meetings held by the Board or the committees of the Board on which he served. We have adopted
a policy about directors’ attendance at the annual meeting of stockholders, which states that we expect our directors to
attend the annual meetings of our stockholders, although attendance is not mandatory. Three out of five of our directors attended
the 2013 annual meeting of stockholders.





4







Board Leadership Structure.  We
separate the roles of Chief Executive Officer and Chairman of the Board in recognition of the differences between the two roles.
Our Chief Executive Officer is responsible for setting the strategic direction for the Company and the day to day leadership and
performance of the Company, while the Chairman of the Board provides guidance to the Chief Executive Officer, sets the agenda for
Board meetings and presides over meetings of the Board. Presently, Mr. Hersh serves as the Chairman of the Board. Mr. Hersh is
an “interested person” as defined in Section 2(a)(19) of the 1940 Act because he is the Chief Executive Officer and
Co-Founder of NGP Energy Capital Management, LLC, which is the sole limited partner of NGPIA. The Board does not currently have
a lead independent director; however, it has determined that its leadership structure, in which 60% of the directors are independent
directors and, as such, are not affiliated with NGPIA or NGPA, is appropriate in light of the services that NGPIA and NGPA provide
to the Company and the potential conflicts of interest that could arise from these relationships.



Risk Oversight.  The Board
has an active role, as a whole and also at the committee level, in overseeing management of the Company’s risks. The Board
regularly reviews information regarding the Company’s credit, liquidity and operations, as well as the risks associated with
each. The Compensation Committee is responsible for overseeing the management of risks relating to the Company’s investment
advisory agreement. The Audit Committee oversees management of financial risks. The Nominating and Corporate Governance Committee
manages risks associated with the independence of the Board of Directors and potential conflicts of interest. While each committee
is responsible for evaluating certain risks and overseeing the management of such risks, the entire Board is regularly informed
through committee reports about such risks.



Board Committees.  The
Board has four standing committees: an Audit Committee, a Compensation Committee, a Nominating and Corporate Governance Committee
and a Valuation Committee. The members of the Board of Directors and the committees of the Board on which they serve, are identified
below.

|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF
|------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------
|Director                                                                                               |  | Audit Committee                                                                                        |  | Compensation Committee                                                                                 |  | Valuation Committee                                                                                    |  | Nominating and Corporate Governance Committee                                                         
|David R. Albin                                                                                         |  |                                                                                                        |  |                                                                                                        |  |                                                                                                        |  |                                                                                                       
|Edward W. Blessing                                                                                     |  | **                                                                                                     |  | *                                                                                                      |  |                                                                                                        |  | **                                                                                                    
|Kenneth A. Hersh                                                                                       |  |                                                                                                        |  |                                                                                                        |  | **                                                                                                     |  |                                                                                                       
|Lon C. Kile                                                                                            |  | *                                                                                                      |  | **                                                                                                     |  | *                                                                                                      |  | *                                                                                                     
|William K. White                                                                                       |  | *                                                                                                      |  | *                                                                                                      |  |                                                                                                        |  | *                                                                                                     



| | ** | Indicates committee chairman.
| | -- | -----------------------------



There are no family relationships
between any director, executive officer or nominee.



Audit Committee.  The charter
of the Audit Committee sets forth the responsibilities of the Audit Committee, which include selecting or retaining each year an
independent registered public accounting firm, which we refer to as the auditors, to audit our accounts and records; reviewing
and discussing with management and the auditors our annual audited financial statements, including disclosures made in management’s
discussion and analysis, and recommending to the Board of Directors whether the audited financial statements should be included
in our annual report on Form 10-K; reviewing and discussing with management and the auditors our quarterly financial statements
prior to the filings of our quarterly reports on Form 10-Q; pre-approving the auditors’ engagement to render audit and/or
permissible non-audit services; and evaluating the qualifications, performance and independence of the auditors.



Each member of the Audit Committee is independent
within the meaning of SEC regulations and the Nasdaq Global Select Market qualitative listing requirements and is able to read
and understand fundamental financial statements, including the statement of net assets, statement of operations, statement of
changes in net assets and statement of cash flows. No member of the Audit Committee has participated in the preparation of the
financial statements at any time during the past three years. Mr. Blessing, the chair of the Committee, is qualified as an audit
committee financial expert within the meaning of SEC regulations and the Board has determined that he has past experience in finance
or accounting that results in his financial sophistication within the meaning of the Nasdaq Global Select Market qualitative listing
requirements. The charter of the Audit Committee is available on our website (www.ngpcrc.com). Information contained on
or connected to our website is not incorporated by reference into this Form
10-K/A and should not be considered a part of this Form 10-K/Aor any other filing that we file with the SEC. The Audit Committee met six times during 2013.





5







Compensation Committee.  The
function of the Compensation Committee is to review and approve the compensation of our investment advisor relative to performance
pursuant to an investment advisory agreement dated November 9, 2004, and most recently extended on October 30, 2013 through November
9, 2014, or, if we cease to have a separate investment advisor and directly compensate our executive officers, the compensation
of our Executive Officers relative to performance. All members of the Committee are independent within the meaning of SEC regulations
and the Nasdaq Global Select Market qualitative listing requirements. The charter of the Compensation Committee is available on
our website (www.ngpcrc.com). Information contained on or connected to our website is not incorporated by reference into
this Form 10-K/A and should not be considered a part of this Form
10-K/A or any other filing that we file with the SEC. The Compensation Committee met three times during 2013.



Nominating and Corporate Governance
Committee.  The Nominating and Corporate Governance Committee is responsible for developing and implementing policies
and practices relating to corporate governance. The Committee selects individuals for nomination to the Board of Directors. In
addition, the Committee develops and reviews background information on candidates for the Board and makes recommendations to the
Board regarding such candidates. The Committee also prepares and supervises the Board’s annual review of director independence.
The Committee also reviews and may make recommendations to the Board relating to those issues that pertain to the effectiveness
of the Board in carrying out its responsibilities in governing us and overseeing our management. The charter of the Nominating
and Corporate Governance Committee is available on our website (www.ngpcrc.com). Information contained on or connected
to our website is not incorporated by reference into this Form 10-K/Aand should not be considered a part of this Form 10-K/A
or any other filing that we file with the SEC. The Nominating and Corporate Governance Committee met three times during 2013.



The Nominating and Corporate Governance
Committee considers candidates for Board membership suggested by its members and other Board members, as well as management and
stockholders. A stockholder who wishes to recommend a prospective nominee for the Board should notify our Secretary or any member
of the Nominating and Corporate Governance Committee in writing in care of NGP Capital Resources Company, Attention: Corporate
Secretary, 909 Fannin, Suite 3800, Houston, Texas 77010. To be considered by the Nominating and Corporate Governance Committee,
stockholder nominations must be submitted before the fiscal year-end and must be accompanied by a description of the qualifications
of the proposed candidate and a written statement from the proposed candidate that he or she is willing to be nominated and desires
to serve if elected. The Committee will also consider whether to nominate any person nominated by a stockholder pursuant to the
provisions of our bylaws relating to stockholder nominations. Nominees for director who are recommended by stockholders will be
evaluated in the same manner as any other nominee for director.



Once the Nominating and Corporate Governance
Committee has identified a prospective nominee, the Committee makes an initial determination as to whether to conduct a full evaluation
of the candidate. This initial determination is based on whatever information is provided to the Committee with the recommendation
of the prospective candidate, as well as the Committee’s own knowledge of the prospective candidate, which may be supplemented
by inquiries to the person making the recommendation or others. The preliminary determination is based primarily on the need for
additional Board members to fill vacancies or expand the size of the Board and the likelihood that the prospective nominee can
satisfy the evaluation factors considered by the Committee. If the Committee determines, in consultation with the other Board members
as appropriate, that additional consideration is warranted, it may gather additional information about the prospective nominee’s
background and experience. The Chairman of the Committee and the Chairman of the Board will then interview a qualified candidate.
A qualified candidate is then invited to meet the remaining members of the Committee and the other directors. The Committee then
determines, based on the background information and information obtained in interviews, whether to recommend to the Board that
a candidate be nominated to the Board.



The Committee believes a prospective nominee
for director should, at a minimum, satisfy the following standards and qualifications and evaluates prospective nominees accordingly:

| | · | the prospective nominee’s ability to represent the interests of our stockholders;
| | - | ---------------------------------------------------------------------------------

| | · | the prospective nominee’s standards of integrity, commitment and independence of thought and judgment;
| | - | ------------------------------------------------------------------------------------------------------





6







| | · | the prospective nominee’s ability to dedicate sufficient time, energy and attention to the diligent performance of his
or her duties, including the prospective nominee’s service on other public company boards; and
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | · | the extent to which the prospective nominee contributes to the range of talent, skill and expertise appropriate for the Board.
| | - | ------------------------------------------------------------------------------------------------------------------------------



The Committee also considers such other
relevant factors as it deems appropriate, including the current composition of the Board, the balance of management and independent
directors and the need for Audit Committee expertise. After completing this evaluation and interview, the Committee makes a recommendation
to the full Board as to the persons who should be nominated by the Board, and the Board determines the nominees after considering
the recommendation and report of the Committee.



All of the members of the Committee are
independent within the meaning of SEC regulations and the Nasdaq Global Select Market qualitative listing requirements. No member
of the Committee is an “interested person” as defined in the 1940 Act.



Valuation Committee.  The
function of the Valuation Committee is to aid the Board in estimating the fair values of debt and equity securities that are not
publicly traded or for which current market valuations are not readily available. The Committee met ten times during 2013.



Code of Ethics



We have adopted a code of business conduct
and ethics applicable to our directors, officers (including our principal executive officer, principal compliance officer, principal
financial officer, and controller, or persons performing similar functions) and employees. In addition, we and our Manager have
adopted a joint code of ethics pursuant to Rule 17j-1 under the 1940 Act that establishes procedures for personal investments and
restricts certain personal securities transactions. Personnel subject to such code may invest in securities for their personal
investment accounts, including securities that may be purchased or held by us, so long as such investments are made in accordance
with the code’s requirements. Copies of our code of business conduct and ethics and joint code of ethics will be provided
to any person, without charge, upon request. Contact L. Scott Biar at 713-752-0062 to request a copy or send the request to NGP
Capital Resources Company, Attn: L. Scott Biar, 909 Fannin Street, Suite 3800, Houston, Texas 77010. Additionally, our code of
business conduct and ethics is available on our corporate website, www.ngpcrc.com, in the Corporate Governance section.
If any substantive amendments are made to our code of business conduct and ethics or if we grant any waiver, including any implicit
waiver, from a provision of the code to any of our executive officers and directors, we will disclose the nature of such amendment
or waiver in a report on Form 8-K.



Item 11. Executive Compensation.



Compensation Discussion
and Analysis



Our executive officers do not receive any
direct compensation from us. We do not currently have any employees and do not expect to have any employees. Services necessary
for our business are provided by individuals who are employees of NGPIA, our manager, and NGPA, our administrator, pursuant to
the terms of our investment advisory agreement and our administration agreement, respectively. Each of our executive officers is
an employee of NGPA. Our day-to-day investment operations are managed by our investment adviser. Most of the services necessary
for the origination and administration of our investment portfolio are provided by investment professionals employed by NGPA. In
addition, we reimburse NGPA for our allocable portion of expenses incurred by it in performing its obligations under the administration
agreement, including our allocable portion of the cost of our officers and their respective staffs.



Under our investment advisory agreement,
NGPIA earned approximately $6.0 million and $4.6 million in fees for the years ended December 31, 2013 and 2012, respectively.
In addition, during 2013 and 2012, we reimbursed NGPA approximately $3.1 million and $2.9 million, respectively, in connection
with our allocable portion of certain expenses under the administration agreement.





7







Potential Payments
upon Termination or Change in Control



In September 2013, in conjunction with our
board’s evaluation of strategic alternatives to enhance stockholder value, our administrator entered into retention agreements
with all of its salaried employees. These retention agreements permit us to continue to operate in the normal course of business
during our board’s evaluation of strategic alternatives and provide that upon a Change in Control (as defined below) of the
Company, each of the salaried employees of our administrator will be entitled to certain compensatory benefits. Assuming that a
Change in Control occurred on December 31, 2013, the dollar amounts of potential payments to each of our named executive officer
would have been as follows: Mr. Gardner - $625,000; and Mr. Biar - $440,000. Consistent with the allocation under the administration
agreement of expenses incurred in connection with our evaluation of strategic alternatives, at least 75% of any retention payments
paid pursuant to these retention agreements shall be allocated to, and paid by, the Company, with the remaining portion, not to
exceed 25%, to be paid by NGPIA. The amounts above are before taxes, which would reduce amounts ultimately due to our named executive
officers. Any actual payments that may be made under the agreements described above depend on various factors, which may or may
not exist at the time a Change in Control actually occurs and/or the named executive officer is actually terminated. Therefore,
such amounts and disclosures should be considered “forward looking statements.”



For purposes of these retention agreements,
“Change of Control” means (1) any consolidation, merger, or share exchange of the Company in which the Company is not
the continuing or surviving corporation or pursuant to which shares of the Company’s common stock would be converted into
cash, securities, or other property, other than a consolidation, merger, or share exchange in which the holders of the Company’s
common stock immediately prior to such transaction have the same proportionate ownership of common stock of the surviving corporation
immediately after such transaction; (2) any sale, lease, exchange, or other transfer (excluding transfer by way of pledge or hypothecation)
in one transaction or a series of related transactions of all or substantially all of the assets of the Company; (3) the stockholders
of the Company approve any plan or proposal for the liquidation or dissolution of the Company; (4) the cessation of control (by
virtue of their not constituting a majority of directors) of the Company’s Board by the individuals (the "Continuing
Directors") who were directors of the Company at the Effective Date or become directors after the effective date of the retention
agreements and whose election or nomination for election by the Company’s stockholders was approved by a vote of at least
two-thirds of the directors then in office who were directors at the effective date of the retention agreements or whose election
or nomination for election was previously so approved; (5) the acquisition of beneficial ownership (within the meaning of Rule
13d-3 under the Act) of an aggregate of 50% or more of the voting power of the Company’s outstanding voting securities by
any person or group (as such term is used in Rule 13d-5 under the Act) who beneficially owned less than 50% of the voting power
of the Company’s outstanding voting securities on the effective date of the retention agreements; or (6) in a Title 11 bankruptcy
proceeding, the appointment of a trustee or the conversion of a case involving the Company to a case under Chapter 7.



Compensation of Directors



The following table sets forth the compensation
paid to our directors in 2013:

|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |        |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  
|------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ | ------ |  | ------------------------------------------------------------------------------------------------------ | -
|Name of Person, Position                                                                               |  | Fees earned or paid in cash                                                                            |        |  | Total                                                                                                  |  
|Independent directors                                                                                  |  |                                                                                                        |        |  |                                                                                                        |  
|Edward W. Blessing                                                                                     |  | $                                                                                                      | 90,000 |  |                                                                                                        | $
|Lon C. Kile                                                                                            |  | $                                                                                                      | 80,000 |  |                                                                                                        | $
|William K. White                                                                                       |  | $                                                                                                      | 75,000 |  |                                                                                                        | $
|Interested directors(1)                                                                                |  |                                                                                                        |        |  |                                                                                                        |  
|David R. Albin                                                                                         |  | $                                                                                                      | 0      |  |                                                                                                        | $
|Kenneth A. Hersh                                                                                       |  | $                                                                                                      | 0      |  |                                                                                                        | $



| | (1) | Interested directors do not receive any direct compensation from us.
| | --- | --------------------------------------------------------------------



Each director who is not an officer will
receive an annual fee of $75,000 and reimbursement for all out-of-pocket expenses relating to attendance at meetings. In addition,
the Chairman of the Audit Committee receives an annual fee of $10,000 in quarterly payments, and each chairman of any other committee
receives an annual fee of $5,000 in quarterly payments. The independent directors do not receive any additional compensation from
us or our portfolio companies for any additional services rendered. Each director who is not an officer is also provided an allowance
of up to $10,000 to be used for professional training purposes. The directors who were not officers were paid an aggregate of $245,000
as compensation for the year ended December 31, 2013, representing the annual fees for the year served in 2013.





8







Compensation Committee Interlocks and Insider
Participation



The Compensation Committee of the Board
is currently comprised of Messrs. Kile (chair), Blessing and White. No member of the Compensation Committee is a former officer
of the Company or was an officer or employee of the Company during the last fiscal year. None of our executive officers served
on the Board of Directors or the Compensation Committee of any other entity for which any officers of such other entity served
either on our Board of Directors or Compensation Committee.



Compensation Committee Report



The Compensation Committee has reviewed
and discussed the Compensation Discussion and Analysis with management. Based upon such review, the related discussions and such
other matters deemed relevant and appropriate by the Compensation Committee, the Compensation Committee has recommended to the
Board of Directors that the Compensation Discussion and Analysis be included in this Form
10-K/A.



Respectfully submitted by the Compensation
Committee of the Board,

Lon C. Kile, Chairman

Edward W. Blessing

William K. White



9







Item 12. Security Ownership of Certain Beneficial Owners
and Management and Related Stockholder Matters.



To our knowledge, there have been no persons
that owned 25% or more of the outstanding voting securities and no person would be deemed to control us, as such term is defined
in the Investment Company Act of 1940, as amended, which we refer to as the 1940 Act.



Our directors are divided into two groups — interested
directors and independent directors. Interested directors are “interested persons” of us, as defined in the 1940 Act.



The following table shows the amount of
our common stock beneficially owned (unless otherwise indicated) as of April 28, 2014, by (1) any person known to us to be the
beneficial owner of more than 5% of the outstanding shares of our common stock, (2) each of our directors and nominees for director,
(3) our chief executive officer and certain other executive officers and (4) all directors and executive officers as a group. The
number of shares beneficially owned by each entity, person, director or executive officer is determined under the rules of the
SEC and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial
ownership includes any shares as to which the individual has the sole or shared voting power or investment power and also any shares
that the individual has the right to acquire within 60 days of April 28, 2014, through the exercise of any stock option or other
right. Unless otherwise indicated, each person has the sole investment and voting power, or shares such powers with his spouse,
with respect to the shares set forth in the table. Unless known otherwise by us, the beneficial ownership information is based
on the most recent Form 3, Form 4, Form 5, Schedule 13D or Schedule 13G, as applicable.



Unless otherwise noted below, the address
of each person listed in the table below is 909 Fannin, Suite 3800, Houston, Texas 77010.



|Name and Address of Beneficial Owner                    |  | Number ofSharesBeneficiallyOwned (1) |           | Percent ofClass (2) |  | Dollar Range ofEquity SecuritiesBeneficiallyOwned byDirectors (3)(4)(5)(6)
|------------------------------------------------------- |  | ------------------------------------ | --------- | ------------------- |  | --------------------------------------------------------------------------
|Beneficial owners of more than 5%                       |  |                                      |           |                     |  |                                                                           
|None                                                    |  |                                      |           |                     |  |                                                                           
|Independent Directors                                   |  |                                      |           |                     |  |                                                                           
|Lon C. Kile                                             |  |                                      | 11,299    |                     |  |                                                                           
|Edward W. Blessing                                      |  |                                      | 15,000    |                     |  |                                                                           
|William K. White                                        |  |                                      | -         |                     |  |                                                                           
|Interested Directors                                    |  |                                      |           |                     |  |                                                                           
|Kenneth A. Hersh (7)                                    |  |                                      | 706,769   |                     |  |                                                                           
|David R. Albin (8)                                      |  |                                      | 151,562   |                     |  |                                                                           
|Executive Officers                                      |  |                                      |           |                     |  |                                                                           
|Stephen K. Gardner (9)                                  |  |                                      | 78,487    |                     |  |                                                                           
|L. Scott Biar                                           |  |                                      | 41,833    |                     |  |                                                                           
|Directors and Executive Officers as a group (7 persons) |  |                                      | 1,004,950 |                     |  |                                                                           





| | * | Indicates less than one percent.
| | - | --------------------------------



| | (1) | Beneficial ownership has been determined in accordance with Rule 13d-3 of the Securities Exchange Act of 1934.
| | --- | --------------------------------------------------------------------------------------------------------------



| | (2) | Based on a total of 20,499,188 shares of our common stock issued and outstanding on April 28, 2014.
| | --- | ---------------------------------------------------------------------------------------------------



| | (3) | Beneficial ownership has been determined in accordance with Rule 16a-1(a)(2) of the Securities Exchange Act of 1934.
| | --- | --------------------------------------------------------------------------------------------------------------------



| | (4) | Dollar ranges are as follows: None, $1 – $10,000, $10,001 – $50,000, $50,001 – $100,000, $100,001-$500,000, $500,001-$1,000,000; or Over $1,000,000.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------



| | (5) | The dollar range of the equity securities beneficially owned is calculated by multiplying $6.86, the closing price of the common stock as of April 28, 2014, as reported on the Nasdaq Global Select Market, by the number of shares.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





10







| | (6) | Includes only shares of NGP Capital Resources Company. There are no other funds in the family of investment companies.
| | --- | ----------------------------------------------------------------------------------------------------------------------



| | (7) | NGP Energy Capital Management, LLC, which is the sole limited partner of NGPIA, owns 100 shares of the Company. Mr. Hersh is an officer and manager of NGP Energy Capital Management, LLC, but he disclaims beneficial ownership of these shares.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (8) | NGP Energy Capital Management, LLC, which is the sole limited partner of NGPIA, owns 100 shares of the Company. Mr. Albin is an officer and manager of NGP Energy Capital Management, LLC, but he disclaims beneficial ownership of these shares.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (9) | Each of Mr. Gardner’s son and daughter hold an aggregate of 7,310 shares in their respective UGMA accounts. Mr. Gardner retains control over voting and investment decisions of these accounts but disclaims beneficial ownership of these shares.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



For the period ended December 31, 2013,
none of the independent directors or their immediate family members owned any shares of NGPIA or in any person directly or indirectly
controlling, controlled by, or under common control with NGPIA. However, Mr. Albin and Mr. Hersh have indirect interests, through
several entities, in NGPIA. The nature of both Mr. Albin’s and Mr. Hersh’s indirect interest in NGPIA is less than
25% of its total partnership interests, but the specific value varies from time to time.



Item 13. Certain Relationships and Related Transactions.



Investment Advisory and Administration Agreements



We are party to an investment
advisory agreement with our manager, NGPIA, whose general partner is NGPA. Both of our executive officers, Messrs. Gardner and
Biar, are officers of our manager. In addition, two of our directors, Messrs. Hersh and Albin, have direct and indirect ownership
interests in our manager. The address of our manager is 909 Fannin, Suite 3800, Houston, Texas 77010.



Pursuant to the terms of the
administration agreement, our administrator, NGPA, currently provides us with administrative services necessary to conduct our
day-to-day operations. Both of our executive officers, Messrs. Gardner and Biar, are officers of our administrator. In addition,
two of our directors, Messrs. Hersh and Albin, have direct and indirect ownership interests in our administrator. The address of
our administrator is 909 Fannin, Suite 3800, Houston, Texas 77010.



License Agreement



We are party to a license agreement with
NGP, pursuant to which NGP has granted us a non-exclusive, royalty-free license to use the “Natural Gas Partners” and
“NGP” names. Affiliates of NGP own and control our administrator.



Indemnity Agreements



We have entered into indemnity agreements
with certain officers and directors which provide, among other things, that we will indemnify such officer or director, under the
circumstances and to the extent provided for therein, for expenses, damages, judgments, fines, liabilities, losses, penalties,
excise taxes and amounts paid in settlement that he or she may be required to pay in actions or proceedings to which he or she
is or may be made a party by reason of his or her position as a director or officer, and otherwise to the fullest extent permitted
under Maryland law and our charter and bylaws. In addition, the investment advisory agreement provides that, absent willful misfeasance,
bad faith or gross negligence in the performance of its duties or by reason of the reckless disregard of its duties and obligations,
our manager, its partners and our managers’ and its partners’ respective officers, managers, partners, agents, employees,
controlling persons, members and any other person or entity affiliated with it are entitled to indemnification from us for any
damages, liabilities, costs and expenses (including reasonable attorneys’ fees and amounts reasonably paid in settlement)
arising out of or otherwise based upon any of our manager’s duties or obligations under the investment advisory agreement
or otherwise as our investment adviser.





11







Review, Approval or Ratification of
Transactions with Related Persons



Our independent directors are required to
review and approve any transactions with related persons (as such term is defined in Item 404 of Regulation S-K).



Item 14. Principal Accountant Fees and Services.



The following table represents aggregate
fees billed to us for the fiscal years ended December 31, 2013 and 2012 by Ernst &Young LLP, or E&Y, our principal independent
registered public accounting firm.



|Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |         |     | Description: http:||content.edgar-online.com|edgar_conv_img|2012|04|13|0001144204-12-021556_SPACER.GIF |  
|------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------ | ------- | --- | ------------------------------------------------------------------------------------------------------ | -
|                                                                                                       |  | Fiscal Year Ended December 31, 2013                                                                    |         |     | Fiscal Year Ended December 31, 2012                                                                    |  
|Audit Fees                                                                                             |  | $                                                                                                      | 599,500 | (1) |                                                                                                        | $
|Audit-related Fees                                                                                     |  |                                                                                                        | 22,271  |     |                                                                                                        |  
|Tax Fees                                                                                               |  |                                                                                                        | 35,000  |     |                                                                                                        |  
|All Other Fees                                                                                         |  |                                                                                                        | -       |     |                                                                                                        |  
|Total Fees                                                                                             |  | $                                                                                                      | 656,771 |     |                                                                                                        | $

| | (1) | Includes approximately $40,000 and $49,000 in audit fees related to our universal shelf registration statement on Form N-2
for the fiscal years ended December 31, 2013 and 2012, respectively.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Audit fees relate to fees and expenses billed
by E&Y for the annual audit, including the audit of our annual financial statements, audit of management’s report on
internal controls over financial reporting, review of our quarterly financial statements and review of registration statements
filed with the SEC. Audit-related fees include fees billed for out-of-pocket expenses for audit-related services and for attest
services that are not required by statute or regulation. Tax fees consist of fees billed for professional services for tax compliance,
tax advice and tax planning. All other fees would relate to fees billed for products and services other than services described
above.



All of the audit-related and tax compliance
consultation services were pre-approved by the Audit Committee. The Audit Committee has considered whether the provision of non-audit
services by E&Y to us, our manager and our administrator is compatible with maintaining E&Y’s independence in the
conduct of its auditing functions.



There were no non-audit services billed
by E&Y to our manager or our administrator. In addition, E&Y did not provide any non-audit services to any entity controlling,
controlled by or under common control with our manager.



12







PART
IV.



Item 15. Exhibits, Financial Statement Schedules.



The following information required under
this item 15 (other than Exhibits 31.3 and 31.4) was filed with the SEC as part of the Original Report on March 10, 2014:



(a)



| | (1) | Financial Statements
| | --- | --------------------



Report of Independent Registered
Public Accounting Firm dated March 7, 2014



Report of Independent Registered
Public Accounting Firm on Controls dated March 7, 2014



Report of Independent Registered
Public Accounting Firm dated March 9, 2012



Consolidated Balance Sheets
as of December 31, 2013 and December 31, 2012



Consolidated Statements of
Operations for the years ended December 31, 2013, 2012 and 2011



Consolidated Statement of
Changes in Net Assets for the years ended December 31, 2013, 2012 and 2011



Consolidated Statements of
Cash Flows for the years ended December 31, 2013, 2012 and 2011



Consolidated Schedules of
Investments as of December 31, 2013 and 2012



Notes to Consolidated Financial
Statements



| | (2) | Financial Statement Schedules
| | --- | -----------------------------



Schedule 12-14 Investments
in and Advances to Affiliates



| | (b) | Exhibits required to be filed by Item 601 of Regulation S-K
| | --- | -----------------------------------------------------------



See “Index to Exhibits”
following the signature page for a description of the exhibits filed as part of the Original Report and this Form
10-K/A.



13







SIGNATURES



Pursuant to the requirements of Section
13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.



|                     |  | Description: http:||content.edgar-online.com|edgar_conv_img|2011|03|14|0001144204-11-014410_SPACER.GIF
|-------------------- |  | ------------------------------------------------------------------------------------------------------
|Date: April 29, 2014 |  | NGP CAPITAL RESOURCES COMPANY                                                                         
|                     |  | By:  /s/ Stephen K. Gardner                                                                           
|                     |  | Stephen K. Gardner                                                                                    
|                     |  | President and Chief Executive Officer                                                                 





Pursuant to the requirements of the Securities
Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities
and on the dates indicated. This document may be executed by the signatories hereto on any number of counterparts, all of which
constitute one and the same instrument.



|Signature                      |  | Title                                                                      |  | Date                  
|------------------------------ |  | -------------------------------------------------------------------------- |  | ----------------------
|/s/ Stephen
        K. Gardner |  | President
        and Chief Executive Officer                              |  | April 29,
        2014
|Stephen K. Gardner             |  | (Principal Executive Officer)                                              |  |                       
|                               |  |                                                                            |  |                       
|/s/ L.
        Scott Biar      |  | Chief Financial Officer, Secretary, Treasurer and Chief Compliance Officer |  | April
29, 2014        
|L. Scott Biar                  |  | (Principal
        Financial and Accounting Officer)                       |  |                       
|/s/ Kenneth A. Hersh           |  | Director and Chairman of the Board                                         |  | April 29, 2014        
|Kenneth A. Hersh               |  |                                                                            |  |                       
|/s/ David R. Albin             |  | Director                                                                   |  | April 29, 2014        
|David R. Albin                 |  |                                                                            |  |                       
|                               |  |                                                                            |  |                       
|/s/ Edward W. Blessing         |  | Director                                                                   |  | April 29, 2014        
|Edward W. Blessing             |  |                                                                            |  |                       
|/s/ Lon C. KilE                |  | Director                                                                   |  | April 29, 2014        
|Lon C. Kile                    |  |                                                                            |  |                       
|/s/ WILLIAM K. WHITE           |  | Director                                                                   |  | April 29, 2014        
|William K. White               |  |                                                                            |  |                       



| |  |  |  | 
| |  |  |  | 

14







INDEX TO EXHIBITS



|Exhibit |  |                                                                                                                                                                                                                                                                                                                                                                                
|------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|No.     |  | Exhibit                                                                                                                                                                                                                                                                                                                                                                        
|3.1     |  | Articles of Incorporation (filed as Exhibit (a)(1) to the Company’s Registration Statement on Form N-2 filed on August 16, 2004 (Registration No. 333-118279) and incorporated herein by reference)                                                                                                                                                                            
|3.2     |  | Articles of Amendment and Restatement (filed as Exhibit 3.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 and incorporated herein by reference)                                                                                                                                                                                             
|3.3     |  | Second Amended and Restated Bylaws (filed as Exhibit
    3.1 to our Current Report on Form 8-K filed on April 22, 2014 and incorporated herein by reference)                                                                                                                                                                                                                   
|4.1     |  | Form of Stock Certificate (filed as Exhibit (d) to the Company’s Pre-Effective Amendment No. 2 to Registration Statement on Form N-2 filed on October 7, 2004 (Registration No. 333-118279) and incorporated herein by reference)                                                                                                                                              
|4.2     |  | Dividend Reinvestment Plan (filed as Exhibit (e) to the Company’s Registration Statement on Form N-2 filed on August 16, 2004 (Registration No. 333-118279) and incorporated herein by reference)                                                                                                                                                                              
|10.1    |  | Investment Advisory Agreement between the Company and NGP Investment Advisor, LP (filed as Exhibit 10.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004, and incorporated herein by reference)                                                                                                                                                
|10.2    |  | Administration Agreement between the Company and NGP Administration, LLC (filed as Exhibit 10.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 and incorporated herein by reference)                                                                                                                                                         
|10.3    |  | Trademark License Agreement between the Company and NGP Energy Capital Management, L.L.C. (formerly known as Natural Gas Partners, L.L.C.) (filed as Exhibit 10.3 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 and incorporated herein by reference)                                                                                       
|10.4    |  | Form of Indemnity Agreement (filed as Exhibit 10.5 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 and incorporated herein by reference)                                                                                                                                                                                                      
|10.5    |  | Custody Agreement between Registrant and Wells Fargo Bank, N.A. (filed as Exhibit (j)(1) to the Company’s Registration Statement on Form N-2 filed October 15, 2007 (Registration No. 333-146715) and incorporated herein by reference)                                                                                                                                        
|10.6    |  | Amendment No. 1 to Custody Agreement between Registrant and Wells Fargo Bank, N.A. (filed as Exhibit (j)(2) to the Company’s Pre-Effective Amendment No. 1 to Registration Statement on Form N-2 filed September 24, 2004 (Registration No. 333-118279) and as Exhibit 10.8 to the Company’s Annual Report on Form 10-K on March 13, 2008 and incorporated herein by reference)



15







|ExhibitNo. |  | Exhibit                                                                                                                                                                                                                                                                                                                  
|---------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|10.7       |  | Amendment No. 2 to Custody Agreement between Registrant and Wells Fargo Bank, N.A. (filed as Exhibit 10.9 to the Company’s Annual Report on Form 10-K on March 13, 2008 and incorporated herein by reference)                                                                                                            
|10.8       |  | Amendment No. 3 to Custody Agreement dated as of February 28, 2011, between the Company and Wells Fargo Bank, N.A. (filed as Exhibit (j)(4) to our Amendment No. 1 Registration Statement on Form N-2 filed on April 28, 2011 (Registration No. 333-160923) and incorporated herein by reference)                        
|10.9       |  | Third Amended and Restated Revolving Credit Agreement effective as of May 23, 2013, between the Company, the lenders from time to time party thereto and SunTrust Bank and Comerica Bank (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on May 23, 2013 and incorporated herein by reference)        
|10.10      |  | Treasury Secured Revolving Credit Agreement effective as of March 31, 2011, between the Company, the lenders from time to time party thereto and SunTrust Bank (filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on April 6, 2011 and incorporated herein by reference)                                 
|10.11      |  | Consent and First Amendment to Treasury Secured Revolving Credit Agreement effective as of March 30, 2012, between the Company, the lenders from time to time party thereto and SunTrust Bank (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q on May 10, 2012 and incorporated herein by reference)
|10.13      |  | Second Amendment to Treasury Secured Revolving Credit Agreement effective as of September 25, 2012, between the Company, the lenders from time to time party thereto and SunTrust Bank (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q on November 8, 2012 and incorporated herein by reference)   
|10.14      |  | Third Amendment to Treasury Secured Revolving Credit Agreement effective as of May 23, 2013, between the Company, the lenders from time to time party thereto and Sun Trust Bank (filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q on November 7, 2013 and incorporated herein by reference)         
|10.15      |  | Fourth Amendment to Treasury Secured Revolving Credit Agreement effective as of September 24, 2013, between the Company, the lenders from time to time party thereto and Sun Trust Bank (filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q on November 7, 2013 and incorporated herein by reference)  
|14.1       |  | Code of Business Conduct and Ethics for members of the Board of Directors, Officers and Employees (filed as Exhibit 14.1 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2004, and incorporated herein by reference)                                                                         
|14.2       |  | Amended and Restated Joint Code of Ethics by and between the Company and NGP Investment Advisor, LP, adopted December 3, 2009 (filed as Exhibit 14.3 to the Company’s Annual Report on Form 10-K on March 31, 2010 and incorporated herein by reference)                                                                 
|16.1       |  | Letter from PricewaterhouseCoopers LLP to the Securities and Exchange Commission dated April 13, 2012 (filed as Exhibit 16.1 to the Company’s Current Report on Form 8-K on April 13, 2012 and incorporated herein by reference)                                                                                         
|21.1*      |  | Subsidiaries                                                                                                                                                                                                                                                                                                             
|31.1*      |  | Certification required by Rule 13a-14(a)/15d-14(a) by the Chief Executive Officer                                                                                                                                                                                                                                        
|31.2*      |  | Certification required by Rule 13a-14(a)/15d-14(a) by the Chief Financial Officer                                                                                                                                                                                                                                        
|31.3**     |  | Certification required by Rule 13a-14(a)/15d-14(a) by the Chief Executive Officer                                                                                                                                                                                                                                        
|31.4**     |  | Certification required by Rule 13a-14(a)/15d-14(a) by the Chief Financial Officer                                                                                                                                                                                                                                        
|32.1*      |  | Section 1350 Certification by the Chief Executive Officer                                                                                                                                                                                                                                                                
|32.2*      |  | Section 1350 Certification by the Chief Financial Officer                                                                                                                                                                                                                                                                








* Indicates that the exhibit was previously
filed with the Company’s Original Report on March 10, 2014.

** Filed herewith.





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