Common use of Signature Pages to Follow Clause in Contracts

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. II, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Vice President LENDER: BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Director LENDER: CAPITAL ONE, N.A., as a Lender By: /s/ Xxxxx X. Xxxxxx Name: Xxxxx X. Xxxxxx Title: Senior Vice President LENDER: REGIONS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx Name: Xxxxx X Xxxxxxxx-Xxxxxx

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IIVAIL HOLDINGS, INC. ., as the Company By: /s/ S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Name: S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Executive Vice President and Chief Financial Officer Fourth Amendment to Eighth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Xxxxx Xxxxxxxx Name: Xxxxxxx X. Xxxx Xxxxx Xxxxxxxx Title: Senior Vice President LENDER: BANK OF AMERICA, N.A., as a Lender, an L/C Issuer Issuer, a Swing Line Lender, a Revolver Lender and Swingline a Term Loan Lender By: /s/ Xxxxx Xxxxxxxx Name: Xxxxx Xxxxxxxx Title: Senior Vice President U.S. BANK NATIONAL ASSOCIATION, as a Swing Line Lender, a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx X. Xxxxxxxxx Name: Xxxxxxx Xxxxxx Xxxx X. Xxxxxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A.Fourth Amendment to Eighth Amended and Restated Credit Agreement XXXXX FARGO BANK, NATIONAL ASSOCIATION, as an L/C Issuer, a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Senior Vice President TRUIST BANK (as successor by merger to SUNTRUST BANK), as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxx Xxxx Name: Xxxxxx Xxxx Title: Director LENDERBANK OF THE WEST, as a Revolver Lender and a Term Loan Lender By: CAPITAL ONE/s/ Xxxxxx X. Xxxxx Name: Xxxxxx X. Xxxxx Title: Managing Director BOKF, NA DBA BOK FINANCIAL, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxxx X. Xxxxx Name: Xxxxxxx X. Xxxxx Title: Senior Vice President BMO XXXXXX BANK N.A., as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx X. Xxxxxx Xxxx Name: Xxxxx X. Xxxxxx Xxxx Title: Director HSBC BANK USA, A NATIONAL ASSOCIATION, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxx Name: Xxxx Xxxxx Title: Global Relationship Manager Fourth Amendment to Eighth Amended and Restated Credit Agreement PNC BANK, NATIONAL ASSOCIATION, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxxxxx Name: Xxxx Xxxxxxxx Title: Senior Vice President LENDER: REGIONS BANKHSBC BANK AUSTRALIA LIMITED, as a Lender Term Loan Lender, For and on behalf of HSBC BANK AUSTRALIA LIMITED by its duly authorised attorney pursuant to a power of attorney in the presence of By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx Xxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxx Title: Attorney /s/ Xxxxxx Mill Name: Xxxxxx Mill Title: Witness Fourth Amendment to Eighth Amended and Restated Credit Agreement

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IIVAIL HOLDINGS, INC. ., as the Company By: /s/ S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Name: S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Executive Vice President and Chief Financial Officer First Amendment to Seventh Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Xxxxx XxXxxxxx Xxxxx XxXxxxxx Senior Vice President LENDER: First Amendment to Seventh Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as a Lender, an L/C Issuer Issuer, a Swing Line Lender, a Revolver Lender and Swingline a Term Loan Lender By: /s/ Xxxxx XxXxxxxx Xxxxx XxXxxxxx Senior Vice President First Amendment to Seventh Amended and Restated Credit Agreement U.S. BANK NATIONAL ASSOCIATION, as a Swing Line Lender, a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxxxxxx Name: Xxxx Xxxx Xxxx Senior Xxxxxxxxx Title: Vice President LENDER: CITIBANKFirst Amendment to Seventh Amended and Restated Credit Agreement XXXXX FARGO BANK, N.A.NATIONAL ASSOCIATION, as a Lender and an L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A.Issuer, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Director LENDER: CAPITAL ONE, N.A.Vice President First Amendment to Seventh Amended and Restated Credit Agreement COMPASS BANK, as a Revolver Lender By: /s/ Xxxxx X. Xxxxxx Xxxxx Name: Xxxxx X. Xxxxxx Xxxxx Title: Senior Vice President LENDER: REGIONS BANKFirst Amendment to Seventh Amended and Restated Credit Agreement BANK OF THE WEST, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx Xxxxxxxxxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxxx Xxxxxxxxxxxx Title: Vice President First Amendment to Seventh Amended and Restated Credit Agreement

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IITHE VAIL CORPORATION (D/B/A “VAIL ASSOCIATES, INC. .”), as the Company By: /s/ S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Name: S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Executive Vice President and Chief Financial Officer Fifth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Xxxxxx Naval Ronaldo Naval Vice President LENDER: Fifth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as a Lender, an L/C Issuer Issuer, a Swing Line Lender, and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ Xxxxx Xxxxxx XxXxxxxx Xxxxx XxXxxxxx Senior Vice President Fifth Amended and Restated Credit Agreement U.S. BANK NATIONAL ASSOCIATION, as a Swing Line Lender and a Lender By: /s/ Xxxx Xxxxxxxxx Name: Xxxxx Xxxxxx Xxxx Xxxxxxxxx Title: Director LENDERVice President Fifth Amended and Restated Credit Agreement XXXXX FARGO BANK, NATIONAL ASSOCIATION, as an L/C Issuer and a Lender By: CAPITAL ONE/s/ Xxxxxx Xxxxxxxxx Name: Xxxxxx Xxxxxxxxx Title: SVP Third Amendment to Fifth Amended and Restated Credit Agreement JPMORGAN CHASE BANK, N.A., as a Lender By: /s/ Xxxxx X. Xxxxxx Xxxxxxx Xxxxxxx Name: Xxxxx X. Xxxxxx Xxxxxxx Xxxxxxx Title: Senior Vice President LENDER: REGIONS Fifth Amended and Restated Credit Agreement COMPASS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Fifth Amended and Restated Credit Agreement COMERICA BANK, as a Lender By: /s/ Xxxxxx Xxxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxxx Xxxxxx Title: Vice President Fifth Amended and Restated Credit Agreement

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IIVAIL HOLDINGS, INC. ., as the Company By: /s/ S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Name: S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Executive Vice President and Chief Financial Officer First Amendment to Eighth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Xxxxx Xxxxxxxx Xxxxx Xxxxxxxx Senior Vice President LENDER: First Amendment to Eighth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as a Lender, an L/C Issuer Issuer, a Swing Line Lender,a Revolver Lender and Swingline a Term Loan Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Xxxxx Xxxxxxxx Xxxxx Xxxxxxxx Senior Vice President LENDER: CITIBANK, N.A.First Amendment to Eighth Amended and Restated Credit Agreement U.S. BANK NATIONAL ASSOCIATION, as a Swing Line Lender, a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxx X. Xxxxxxxx Name: Xxxxxx X. Xxxxxxxx Title: Vice President First Amendment to Eighth Amended and Restated Credit Agreement XXXXX FARGO BANK, NATIONAL ASSOCIATION, as an L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A.Issuer, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Director LENDER: CAPITAL ONE, N.A.VP First Amendment to Eighth Amended and Restated Credit Agreement SUNTRUST BANK, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxx Xxxx Name: Xxxxxx Xxxx Title: Director First Amendment to Eighth Amended and Restated Credit Agreement BANK OF THE WEST, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxxxx Xxx Name: Xxxxxxxx Xxx Title: Director, CBG First Amendment to Eighth Amended and Restated Credit Agreement BOKF, NA DBA BOK FINANCIAL, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx X. Xxxxxx Xxxxx Name: Xxxxx X. Xxxxxx Xxxxx Title: Senior Vice President LENDER: REGIONS BANKFirst Amendment to Eighth Amended and Restated Credit Agreement BMO XXXXXX BANK N.A., as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx Xxxxxxx Xxxxxxx Name: Xxxxxxx Xxxxxxx Title: Director First Amendment to Eighth Amended and Restated Credit Agreement HSBC BANK USA, NATIONAL ASSOCIATION, as a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxx X Xxxxxxxx-XxxxxxName: Xxxx Xxxxx Title: Relationship Manager First Amendment to Eighth Amended and Restated Credit Agreement

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. II, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Vice President LENDER: BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Director Vice President LENDER: CAPITAL ONE, N.A., as a Lender By: /s/ Xxxxx X. Xxxxxx III Name: Xxxxx X. Xxxxxx III Title: Senior Vice President LENDER: REGIONS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx X. Xxxxxx Name: Xxxxx X Xxxxxxxx-Xxxxxx X. Xxxxxx

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IITHE VAIL CORPORATION (D/B/A “VAIL ASSOCIATES, INC. .”), as the Company By: /s/ S. Xxxx Xxxxxxx X. Xxxxx Name: S. Xxxx Xxxxxxx X. Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Senior Executive Vice President and Chief Financial Officer BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Xxxxx XxXxxxxx Name: Xxxxxxx X. Xxxx Xxxxx XxXxxxxx Title: Senior Vice President LENDER: BANK OF AMERICA, N.A., as a Lender, an L/C Issuer Issuer, a Swing Line Lender, and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ Xxxxx Xxxxxx XxXxxxxx Name: Xxxxx Xxxxxx XxXxxxxx Title: Director LENDERSenior Vice President U.S. BANK NATIONAL ASSOCIATION, as a Swing Line Lender and a Lender By: CAPITAL ONE/s/ Xxxx Xxxxxxxxx Name: Xxxx Xxxxxxxxx Title: Vice President XXXXX FARGO BANK, NATIONAL ASSOCIATION, as an L/C Issuer and a Lender By: /s/ Xxxxxx Xxxxxxxxx Name: Xxxxxx Xxxxxxxxx Title: Vice President JPMORGAN CHASE BANK, N.A., as a Lender By: /s/ Xxxxx Xxxxxx X. Xxxxxx Xxxxxxxx Name: Xxxxx Xxxxxx X. Xxxxxx Xxxxxxxx Title: Senior Vice President LENDER: REGIONS Managing Director COMPASS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxx Xxxx Name: Xxxx Xxxx Title: Senior Vice President COMERICA BANK, as a Lender By: /s/ Xxxxxx Xxxxxx Name: Xxxxxx Xxxxxx Title: Vice President BANK OF THE WEST, as a Lender By: /s/ Xxx Xxxxx X Xxxxxxxx-XxxxxxName: Xxx Xxxxx Title: Vice President

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. IIVAIL HOLDINGS, INC. ., as the Company By: /s/ S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Name: S. Xxxx Xxxxx Xxxxxxx X. Xxxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: Executive Vice President and Chief Financial Officer Third Amendment to Eighth Amended and Restated Credit Agreement BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Xxxxx Xxxxxxxx Name: Xxxxxxx X. Xxxx Title: Vice President LENDER: BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Xxxxx Xxxxxxxx Title: Senior Vice President LENDERBANK OF AMERICA, N.A.,as an L/C Issuer, a Swing Line Lender, a Revolver Lender and a Term Loan Lender By: BMO XXXXXX /s/ Xxxxx Xxxxxxxx Name: Xxxxx Xxxxxxxx Title: Senior Vice President U.S. BANK N.A.NATIONAL ASSOCIATION,as a Swing Line Lender, a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxxxx X. Xxxxxxx Name: Xxxxxxxx X. Xxxxxxx Title: Senior Vice President XXXXX FARGO BANK, NATIONAL ASSOCIATION, as an L/C Issuer, a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Senior Vice President TRUIST BANK (as successor by merger to SUNTRUST BANK),as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxx Xxxx Name: Xxxxxx Xxxx Title: Director LENDER: CAPITAL ONE, N.A., BANK OF THE WEST,as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxxxxx Xxx Name: Xxxxxxxx Xxx Title: Director, Corporate & Investment Banking BOKF, NA DBA BOK FINANCIAL,as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx X. Xxxxxx Risen Name: Xxxxx X. Xxxxxx Risen Title: Vice President Third Amendment to Eighth Amended and Restated Credit Agreement BMO XXXXXX BANK N.A.,as a Revolver Lender and a Term Loan Lender By: /s/ Xxxxx Xxxx Name: Xxxxx Xxxx Title: Vice President Third Amendment to Eighth Amended and Restated Credit Agreement HSBC BANK USA, A NATIONAL ASSOCIATION,as a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxx Name: Xxxx Xxxxx Title: Global Relationship Manager Third Amendment to Eighth Amended and Restated Credit Agreement PNC BANK, NATIONAL ASSOCIATION,as a Revolver Lender and a Term Loan Lender By: /s/ Xxxx Xxxxxxxx Name: Xxxx Xxxxxxxx Title: Senior Vice President LENDER: REGIONS BANK, HSBC BANK AUSTRALIA LIMITED,as a Term Loan Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx Xxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxx Title: Power of Attorney / Country Head of International Subsidiaries Third Amendment to Eighth Amended and Restated Credit Agreement

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. II, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer (Texas Oil & Chemical Co. II, Inc.) ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ By:/s/ Xxxxx Xxxxxx Name: Xxxxx Xxxxxx Title: Director Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: CAPITAL ONE, N.A., as a Lender By: /s/ By:/s/ Xxxxx X. Xxxxxx Name: Xxxxx X. Xxxxxx Title: Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: REGIONS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx X. Xxxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxxx X. Xxxxxx Title: Vice President (Texas Oil & Chemical Co. II, Inc.) DEPARTING LENDER: COMPASS BANK, as a Departing Lender By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Vice President (Texas Oil & Chemical Co. II, Inc.) DEPARTING LENDER: SUNTRUST BANK, as a Departing Lender By: /s/ Xxxxxx Xxxx Name: Xxxxxx Xxxx Title: Director (Texas Oil & Chemical Co. II, Inc.) ANNEX A Amended and Restated Credit Agreement ANNEX A Published CUSIP Number: 00000XXX0 AMENDED AND RESTATED CREDIT AGREEMENT Dated as of October 1, 2014 as amended by the First Amendment, dated as of February 20, 2015, by the Second Amendment, dated as of March 28, 2017, and by the Third Amendment, dated as of Jul 25, 2017; and as further amended as of July 31, 2018 among TEXAS OIL & CHEMICAL CO. II, INC., as Borrower, CERTAIN SUBSIDIARIES OF THE BORROWER PARTY HERETO, as Guarantors, BANK OF AMERICA, N.A., as Administrative Agent, Swingline Lender and an L/C Issuer, and CITIBANK, N.A., as an L/C Issuer, and THE LENDERS PARTY HERETO XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX INCORPORATED, and CITIBANK, N.A. as SoleJoint Lead ArrangerArrangers and Sole BookrunnerJoint Bookrunners BMO XXXXXX BANK N.A., as Syndication Agent 4326171v8 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND ACCOUNTING TERMS 16 1.01 Defined Terms 16 1.02 Other Interpretive Provisions 3539

Signature Pages to Follow. This Amendment is executed as of the Effective Date. BORROWER: TEXAS OIL & CHEMICAL CO. II, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer (Texas Oil & Chemical Co. II, Inc.) ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx Name: Xxxxxxx Xxxxxx Title: Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: BMO XXXXXX BANK N.A., as a Lender By: /s/ Xxxxx Xxxxxx Ashley Bake Name: Xxxxx Xxxxxx Ashley Bake Title: Director (Texas Oil & Chemical Co. II, Inc.) LENDER: CAPITAL ONE, N.A., as a Lender By: /s/ Xxxxx X. Xxxxxx III Name: Xxxxx X. Xxxxxx III Title: Senior Vice President (Texas Oil & Chemical Co. II, Inc.) LENDER: REGIONS BANK, as a Lender By: /s/ Xxxxx X Xxxxxxxx-Xxxxxx X. Xxxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxXxxxxx X. Xxxxxx Title: Senior Vice President

Signature Pages to Follow. This The parties are signing this Sixth Amendment is executed to Credit Agreement as of the Effective Datedate stated in the introductory clause. BORROWER: TEXAS OIL & CHEMICAL CO. IIBOISE CASCADE COMPANY, INC. a Delaware corporation, as a Borrower By: /s/ S. Xxxx Xxxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GUARANTORS: SOUTH HAMPTON RESOURCES, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer GULF STATE PIPE LINE COMPANY, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer TRECORA CHEMICAL, INC. By: /s/ S. Xxxx Xxxxx Name: S. Xxxx Xxxxx Title: Treasurer ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent By: /s/ Xxxxxxx X. Xxxx Name: Xxxxxxx X. Xxxx Title: Vice President LENDERand Controller BOISE CASCADE BUILDING MATERIALS DISTRIBUTION, L.L.C., a Delaware limited liability company, as a Borrower By: /s/ Xxxxx Xxxxx Name: Xxxxx Xxxxx Title: Vice President and Controller BOISE CASCADE WOOD PRODUCTS, L.L.C., a Delaware limited liability company, as a Borrower By: /s/ Xxxxx Xxxxx Name: Xxxxx Xxxxx Title: Vice President and Controller XXXXX FARGO CAPITAL FINANCE, LLC, as Agent and as a Lender By: /s/ Xxxxxx Xxxxxxx Name: Xxxxxx Xxxxxxx Title: Senior Vice President BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swingline Lender By: /s/ Xxxx Xxxx Xxxx Xxxx Senior Vice President LENDER: CITIBANK, N.A., as a Lender and L/C Issuer By: /s/ Xxxxxxx Xxxxxx X. Xxxxx Name: Xxxxxxx Xxxxxx X. Xxxxx Title: Senior Vice President LENDER: BMO XXXXXX U.S. BANK N.A.NATIONAL ASSOCIATION, as a Lender By: /s/ Xxxxx Xxxxxx Xxxx Xxxxxxxx Name: Xxxxx Xxxxxx Xxxx Xxxxxxxx Title: Director LENDER: CAPITAL ONESenior Vice President JPMORGAN CHASE BANK, N.A., as a Lender By: /s/ Xxxxx X. Xxxxxx Name: Xxxxx X. Xxxxxx Title: Senior Vice President LENDER: REGIONS Executive Director PNC BANK, NATIONAL ASSOCIATION, as a Lender By: /s/ Xxxxx X Xxxxxxxx-X. Xxxxxx Name: Xxxxx X Xxxxxxxx-XxxxxxX. Xxxxxx Title: Assistant Vice President Acknowledged and Agreed: BOISE CASCADE WOOD PRODUCTS HOLDINGS CORP., a Delaware corporation, as Guarantor By: /s/ Xxxxx Xxxxx Name: Xxxxx Xxxxx Title: Vice President and Controller