Exhibit 99.1
Joint Filers' Signatures
WARBURG PINCUS PRIVATE EQUITY (E&P) XI-A
(BRIGHAM), LLC
By: Warburg Pincus Private Equity (E&P) XI-A,
L.P., its sole member
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS PRIVATE EQUITY (E&P) XI-A,
L.P.
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS XI (E&P) PARTNERS-A
(BRIGHAM), LLC
By: Warburg Pincus XI (E&P) Partners-A, L.P., its
sole member
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS XI (E&P) PARTNERS-A, L.P.
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WP BRIGHAM HOLDINGS, L.P.
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS (E&P) XI, L.P.
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS PARTNERS (E&P) XI LLC
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS (E&P) ENERGY LLC
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS (E&P) ENERGY GP, L.P.
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WP ENERGY BRIGHAM HOLDINGS, L.P.
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WP ENERGY PARTNERS BRIGHAM HOLDINGS, L.P.
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS ENERGY (E&P)-A (BRIGHAM), LLC
By: Warburg Pincus Energy (E&P)-A, L.P., its managing
member
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS ENERGY (E&P)-A, L.P.
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS ENERGY (E&P) PARTNERS-A
(BRIGHAM), LLC
By: Warburg Pincus Energy (E&P) Partners-A, L.P., its
managing member
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS ENERGY (E&P) PARTNERS-A, L.P.
By: Warburg Pincus (E&P) Energy GP, L.P., its general
partner
By: Warburg Pincus (E&P) Energy LLC, its general
partner
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS (E&P) XI LLC
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its managing
member
By: Warburg Pincus & Company US, LLC, its general
partner
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS & COMPANY US, LLC
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
BRIGHAM PARENT HOLDINGS, L.P.
By: Warburg Pincus (E&P) XI, L.P., its general
partner
By: Warburg Pincus (E&P) XI LLC, its general
partner
By: Warburg Pincus Partners (E&P) XI LLC, its sole
member
By: Warburg Pincus Partners II (US), L.P., its
managing member
By: Warburg Pincus & Company US, LLC, its
general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS PARTNERS II (US), L.P.
By: Warburg Pincus & Company US, LLC,
its general partner
---------------------------------------- Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
WARBURG PINCUS LLC
By: ------------------------------------ Date:--------------------------------
Name: Robert B. Knauss
Title: Authorized Signatory
CHARLES R. KAYE
By: ------------------------------------ Date:--------------------------------
Name: Charles R. Kaye
By: Robert B. Knauss, Attorney-in-Fact*
JOSEPH P. LANDY
By: ------------------------------------ Date:--------------------------------
Name: Joseph P. Landy
By: Robert B. Knauss, Attorney-in-Fact*
____________________
* The Power of Attorney given by each of Mr. Kaye and Mr. Landy was previously
filed with the U.S. Securities and Exchange Commission on July 12, 2016 as an
exhibit to a beneficial ownership report on Schedule 13D filed by WP LLC with
respect to
WEX Inc. and is hereby incorporated by reference.
