Supplementary Data

9 Months Ended

Sep. 30, 2025

Capitalized Costs


(in thousands)	September 30, 2025		December 31, 2024
Oil and natural gas properties:
Proved	$	1,729,249	$	1,484,968
Unproved	85,778		55,053
Less: accumulated depletion	(800,177)		(643,051)
Net capitalized costs for oil and natural gas properties	$	1,014,850	$	896,970

Costs Incurred for Oil and Natural Gas Producing Activities


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2025		2024		2025		2024
Property acquisition costs:
Proved	$	807	$	—	$	14,148	$	2,824
Unproved	15,704		32,919		46,794		51,515
Development costs	64,006		77,171		212,593		206,761
Total costs incurred for oil and natural gas properties	$	80,517	$	110,090	$	273,535	$	261,100

- Definition

The entire disclosure for oil- and gas-producing activities considered to be supplementary information. Includes, but is not limited to, proved reserve quantity, cost incurred and capitalized, result of operation, standardized measure, and change in standardized measure of discounted future cash flow.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478688/932-270-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-10

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 12.A.3.e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477759/932-235-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section S50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479097/932-235-S50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-8

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/932/tableOfContent

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-1C

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 36
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-36

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-8

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477215/932-235-50-5

+ Details

Granite Ridge Resources, Inc. 10-Q