Ring Energy, Inc.
Unaudited Pro Forma Condensed Combined Financial Information

On July 11, 2023, Ring Energy, Inc. (“Ring” or the “Company”), announced the execution of an asset purchase agreement (“Purchase Agreement”) with Founders Oil & Gas IV, LLC (“Founders” or the “Seller”) for the acquisition of certain oil and gas producing properties in the Permian Central Basin Platform of West Texas, including approximately 3,600 net acres located in Ector County, Texas (“Founders Acquisition”). The Founders Acquisition closed on August 15, 2023 and has an effective date of April 1, 2023 (“Effective Date”).

Based on estimates as of August 15, 2023, the fair value of consideration to be paid to the seller is approximately $75.0 million, of which $50.0 million (inclusive of a $7.5 million deposit made on July 11, 2023 but excluding purchase price adjustments of approximately $10 million), was paid in cash at closing, and an additional $15.0 million subject to post-closing adjustments will be paid in cash after the four-month anniversary of the closing date of the Founders Acquisition. In addition, Ring assumed $0.7 million of revenues in suspense, $2.1 million of asset retirement obligations and $0.2 million of accrued but unpaid property taxes in the Founders Acquisition, all based upon estimated fair value at the closing date.

The Founders Acquisition will be accounted for as an asset acquisition in accordance with Accounting Standards Codification Topic 805, Business Combinations (“ASC 805”). The fair value of the consideration paid by Ring and the allocation of that amount to the underlying assets acquired is recorded on a relative fair value basis. Additionally, costs directly related to the Founders Acquisition are capitalized as a component of the purchase price. The unaudited pro forma condensed combined financial statements presented herein have been prepared to reflect the transaction accounting adjustments to Ring’s historical condensed consolidated financial information in order to account for the Founders Acquisition and include the assumption of liabilities as set forth in the Purchase Agreement.

The Unaudited Pro Forma Condensed Combined Balance Sheet as of June 30, 2023 gives effect to the Founders Acquisition as if it had been completed on June 30, 2023. The Unaudited Pro Forma Condensed Combined Statements of Operations for the Six Months Ended June 30, 2023 and the Year Ended December 31, 2022 gives effect to the Founders Acquisition as if it had been completed on January 1, 2022. The historical audited consolidated financial statements of Founders have a fiscal year end of September 30, 2023. Certain pro forma adjustments were made in the Unaudited Pro Forma Condensed Combined Statements of Operations for the Six Months Ended June 30, 2023 and the Year Ended December 31, 2022 to conform the fiscal year end of Founders to the calendar year end of Ring. These pro forma adjustments are described in more detail in the accompanying notes to the unaudited pro forma condensed combined financial statements. Additional assumptions and estimates underlying the pro forma adjustments are also described in the accompanying notes, which should be read in conjunction with the unaudited pro forma condensed combined financial statements.

The unaudited pro forma condensed combined financial information is provided for illustrative purposes only and does not purport to represent what the actual consolidated results of operations or the consolidated financial position of Ring would have been had the Founders Acquisition and related financing occurred on the dates noted above, nor are they necessarily indicative of future consolidated results of operations or consolidated financial position. Future results may vary significantly from the results reflected because of various factors. In Ring’s opinion, all adjustments that are necessary to present fairly the unaudited pro forma condensed combined financial information have been made.

The unaudited pro forma condensed combined financial information does not reflect the benefits of potential cost savings or the costs that may be necessary to achieve such savings, opportunities to increase revenue generation or other factors that may result from the Founders Acquisition and, accordingly, does not attempt to predict or suggest future results.





The unaudited pro forma financial statements have been developed from and should be read in conjunction with:

The audited consolidated financial statements and accompanying notes of Ring contained in Ring’s Annual Reports on Form 10-K for the years ended December 31, 2022 and 2021;
The unaudited consolidated financial statements and accompanying notes contained in Ring’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2023;
The audited consolidated financial statements and related notes of Founders and affiliate for the years ended September 30, 2022 and 2021, which are included elsewhere in this filing; and
The unaudited consolidated financial statement and related notes of Founders and affiliate for the nine months ended June 30, 2023, which are included elsewhere in this filing.

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Ring Energy, Inc.
Unaudited Pro Forma Condensed Combined Balance Sheet
As of June 30, 2023
(in thousands)
              
Transaction Accounting Adjustments
     Historical Conforming and Founders Pro Forma
RingFoundersReclassificationsAcquisitionCombined
 ASSETS           
Current Assets:
  Cash and cash equivalents  $ 1,750 $ 11,683 $ (11,683)(a)$ 50,005(d)$ 432
(50,005)(g)
(1,318)(j)
Accounts receivable32,04432,044
Crude oil and natural gas receivable3,743(3,743)(a)
Other receivables120(120)(a)
  Joint interest billing receivables, net  2,618   2,618
Derivative assets8,3088,308
  Inventory  7,327 1,336 (1,336)(a) 7,327
  Prepaid expenses and other assets  3,061 352 (352)(a) 3,061
 Total Current Assets  55,108 17,234 (17,234) (1,318) 53,790
 Properties and Equipment:           
Oil and natural gas properties,
full cost method
1,524,51164,674(c)1,593,505
           234(i) 
1,318(j)
2,091(h)
677(f)
Oil and natural gas properties
(successful efforts methods)
135,199(135,199)(b)
Other property and equipment414(414)(a)
  Financing lease asset subject to depreciation 3,144    3,144
Fixed assets subject to depreciation2,7622,762
Total Properties and Equipment1,530,417135,613(135,613)68,9941,599,411
  Accumulated depreciation, depletion, amortization(331,153) (43,286) 
                  43,286
(b) (331,153)
Net Properties and Equipment1,199,26492,327(92,327)68,9941,268,258
              
Operating lease asset1,6291,629
Derivative assets10,55610,556
 Deferred financing costs  15,458  15,458
Total Assets$ 1,282,015$ 109,561$ (109,561)$ 67,676$ 1,349,691
              
LIABILITIES AND STOCKHOLDERS’ EQUITY
 Current Liabilities:           
Accounts payable$ 90,021$ 4$ (4)(a)$ 14,669(e)$ 105,601
           677(f) 
234(i)
Other accrued liabilities3,632(3,632)(a)
  Income tax liability  98    98
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Financing lease liability761761
  Operating lease liability  394    394
Derivative liabilities7,8497,849
  Notes payable  1,413    1,413
Revenue payable682(682)(a)
Asset retirement obligations409409
 Total Current Liabilities  100,945 4,318 (4,318) 15,580 116,525
 Noncurrent Liabilities:           
Deferred income taxes4,0744,074
  Revolving line of credit  397,000  50,005(d)447,005
Financing lease liability,
less current portion
766766
  
Operating lease liability,
less current portion
 1,264    1,264
Derivative liabilities10,82910,829
  Asset retirement obligations  28,297 3,293 (3,293)(a)
          2,091
(h)30,388
Total Noncurrent Liabilities442,2303,293(3,293)52,096494,326
 Total Liabilities  543,175 7,611 (7,611) 67,676 610,851
 Stockholders' Equity           
Preferred stock - $0.001 par value; 50,000,000 shares authorized; no shares issued or outstanding
  Common stock - $0.001 par value; 450,000,000 shares authorized; 195,350,672 issued and outstanding195   195
Members equity93,670(93,670)(a)
Non-controlling interest8,280(8,280)(a)
Additional paid-in capital791,451791,451
Accumulated deficit(52,806)(52,806)
 Total Stockholders' Equity  738,840 101,950 (101,950)  738,840
Total Liabilities and Stockholders' Equity$1,282,015$ 109,561$ (109,561)$ 67,676$1,349,691




























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Ring Energy, Inc.
Unaudited Pro Forma Condensed Combined Statement of Operations
For the Six Months Ended June 30, 2023
(in thousands, except share and per share amounts)
              
Transaction Accounting Adjustments
     Historical Conforming and Founders Pro Forma
RingFoundersReclassificationsAcquisitionCombined
 Operating Revenue:           
Oil, natural gas and natural gas liquids revenues$ 167,431$ —$ 35,040(b)$ —$ 203,371
900(b)
  Crude oil sales   47,191 (12,151)(a) 
(35,040)(b)
Natural gas sales1,075(175)(a)
(900)(b)
  Other revenue  193 (62)(a) 
(131)(c)
Total Operating Revenue167,43148,459(12,519)203,371
Costs and Operating Expenses:
  Lease operating expenses 33,411  8,772(d) 42,183
  Production expenses 12,213 (3,441)(a) 
(8,772)(d)
Gathering, transportation and processing costs(3)(3)
Ad valorem taxes3,3413,341
  Production taxes and revenue deductions 2,292 (572)(a) 
(1,720)(e)
Oil and natural gas production taxes8,4201,720(e)10,140
  Depreciation, depletion and amortization42,065 14,255 (3,344)(a)(3,136)(i)49,840
Asset retirement obligation accretion72052(i)772
Operating lease expense229229
  General and administrative expense13,940 3,842 (1,260) (a) 16,522
Exploration and
abandonment costs
 Total Costs and Operating Expenses102,123 32,602 (8,617) (3,084) 123,024
 Income (Loss) from Operations  65,308 15,857 (3,902) 3,084 80,347
 Other Income (Expense):           
Interest income8080
  Interest expense  (20,941)  (2,175)(g)(23,116)
Gain on derivative contracts12,73912,739
Loss on disposal of assets(132)(132)
Other income126131(c)15
(242)(f)
  Other expense (242) 242(f) 
Net Other Income (Expense)(8,128)(242)131(2,175)(10,414)
Income (Loss) Before Income Tax57,18015,615(3,771)90969,933
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  Provision for income taxes4,327    4,327
Net Income (Loss)$ 61,507$ 15,615$ (3,771)$ 909$ 74,260
              
Weighted-Average Common Shares Outstanding:
  Basic  185,545,775   (k)185,545,775
Diluted193,023,966(k)193,023,966
Net Income (Loss) per Common Share:
  Basic  $ 0.33      (k)$ 0.40
Diluted$ 0.32(k)$ 0.38
















































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Ring Energy, Inc.
Unaudited Pro Forma Condensed Combined Statement of Operations
For the Year Ended December 31, 2022
(in thousands, except share and per share amounts)
              
Transaction Accounting Adjustments
     Historical Conforming and Founders Pro Forma
RingFoundersReclassificationsAcquisitionCombined
 Operating Revenue:           
Oil, natural gas and natural gas liquids revenues$ 347,250$ —$ 55,873(b)$ —$ 406,879
3,756(b)
  Crude oil sales   53,867 2,006(a) 
(55,873)(b)
Natural gas sales4,922(1,166)(a)
(3,756)(b)
  Other revenue  237 4(a) 
(241)(b)
Total Operating Revenue347,25059,026603406,879
Costs and Operating Expenses:
  Lease operating expenses 47,695  13,570(d) 61,265
  Production expenses 12,118 1,452(a) 
(13,570)(d)
Gathering, transportation and processing costs1,8301,830
Ad valorem taxes4,6714,671
  Production taxes and revenue deductions 2,951 (29)(a) 
(2,922)(e)
Oil and natural gas production taxes17,1262,922(e)20,048
  Depreciation, depletion and amortization55,741 13,106 316(a)(2,258)(i)66,905
Asset retirement obligation accretion983103(i)1,086
Operating lease expense364364
  General and administrative expense27,095 4,615 245 (a) 31,955
Exploration and
abandonment costs
 Total Costs and Operating Expenses155,505 32,790 1,984 (2,155) 188,124
 Income (Loss) from Operations  191,745 26,236 (1,381) 
           2,155
 218,755
 Other Income (Expense):           
Interest income
  Interest expense  (23,168)  (4,350)(g)(27,849)
(331)(h)
Loss on derivative contracts(21,533)(21,533)
Other income241(b)241
Realized gain on property sales18(18)(j)
  Other expense (164) 18(j) (146)
Net Other Income (Expense)(44,701)(146)241(4,681)(49,287)
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Income (Loss) Before Income Tax147,04426,090(1,140)(2,526)169,468
  Provision for income taxes(8,409)    (8,409)
Net Income (Loss)$ 138,635$ 26,090$ (1,140)$ (2,526)$ 161,059
              
Weighted-Average Common Shares Outstanding:
  Basic  121,264,175   (k)121,264,175
Diluted141,754,668(k)141,754,668
Net Income (Loss) per Common Share:
  Basic  $ 1.14      (k)$ 1.33
Diluted$ 0.98(k)$ 1.14




Ring Energy, Inc.

Notes to Unaudited Pro Forma Condensed Combined Financial Information


1. Basis of Presentation

The accompanying unaudited pro forma condensed combined financial statements were prepared based on the historical consolidated financial statements of Ring and the historical consolidated financial statements of Founders. The Founders Acquisition has been accounted for as an asset acquisition in accordance with ASC 805. The fair value of the consideration paid by Ring and allocation of that amount to the underlying assets acquired, on a relative fair value basis, will be recorded on Ring’s books as of the date of the closing of the Founders Acquisition. Additionally, costs directly related to the Founders Acquisition are capitalized as a component of the purchase price.

The Unaudited Pro Forma Condensed Combined Statements of Operations for the Six Months Ended June 30, 2023 and the Year Ended December 31, 2022 were prepared assuming the Founders Acquisition occurred on January 1, 2022. The Unaudited Pro Forma Condensed Combined Balance Sheet as of June 30, 2023 was prepared as if the Founders Acquisition had occurred on June 30, 2023. The historical audited consolidated financial statements of Founders have a year end of September 30, 2023. Certain pro forma adjustments were made in the Unaudited Pro Forma Condensed Combined Statements of Operations for the Six Months Ended June 30, 2023 and the Year Ended December 31, 2022 to conform the fiscal year end of Founders to the calendar year end of Ring. These pro forma adjustments are described in more detail in the accompanying notes to the unaudited pro forma condensed combined financial statements.

The unaudited pro forma condensed combined financial information is provided for illustrative purposes only and does not purport to represent what the actual consolidated results of operations or the consolidated financial position of Ring would have been had the Founders Acquisition occurred on the dates noted above, nor are they indicative of future consolidated results of operations or consolidated financial position. In Ring’s opinion, all adjustments that are necessary to present fairly the unaudited pro forma condensed combined financial information have been made.

2.Consideration and Purchase Price Allocation

The preliminary allocation of the total purchase price in the Founders Acquisition is based upon management’s estimates of, and assumptions related to, the fair value of assets to be acquired and liabilities to be assumed as of the closing date of the transaction using currently available information and market data as of August 15, 2023. Because the unaudited pro forma condensed combined financial information has been prepared based on these preliminary estimates, the final purchase price allocation and the resulting effect on financial position and results of operations may differ significantly from the pro forma amounts included herein.

The preliminary purchase price allocation is subject to change due to several factors, including but not limited to changes in the estimated fair value of assets acquired and liabilities assumed as of the closing date of the transaction, which could result from changes in future oil and natural gas commodity prices, reserve estimates, interest rates, as well as other factors.


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The consideration transferred and the fair value of assets acquired and liabilities assumed by Ring are as follows (in thousands):

Consideration:
Cash consideration, after closing adjustments$ 50,005
Fair value of deferred payment liability14,669
Fair value of consideration to be paid to seller64,674
Direct transaction costs1,318
Total consideration$ 65,992
Relative fair value of assets acquired:
Oil and natural gas properties
Proved65,613
Unevaluated3,381
Amount attributable to assets acquired$ 68,994
Fair value of liabilities assumed:
Suspense liability677
Ad valorem taxes234
Asset retirement obligations2,091
Amount attributable to liabilities assumed$ 3,002

The fair value measurements of assets acquired and liabilities assumed are based on inputs that are not observable in the market and therefore represent Level 3 inputs. The fair value of oil and gas properties and asset retirement obligations were measured using the discounted cash flow technique of valuation.

Significant unobservable inputs included future commodity prices adjusted for differentials, projections of estimated quantities of recoverable reserves, forecasted production based on decline curve analysis, estimated timing and amount of future operating and development costs, and a weighted average cost of capital.

3.Adjustments to Unaudited Pro Forma Condensed Combined Balance Sheet and Unaudited Pro Forma Condensed Combined Statements of Operations

The unaudited pro forma condensed combined financial information has been compiled in a manner consistent with the accounting policies adopted by Ring. Actual results may differ materially from the assumptions and estimates contained herein.

The pro forma adjustments are based on currently available information and certain estimates and assumptions that Ring believes provide a reasonable basis for presenting the significant effects of the Founders Acquisition. General descriptions of the pro forma adjustments are provided below.


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Unaudited Pro Forma Condensed Combined Balance Sheet

The following adjustments were made in the preparation of the Unaudited Pro Forma Condensed Combined Balance Sheet as of June 30, 2023:

(a)Adjustment to remove assets and liabilities not acquired as part of the Founders Acquisition.
(b)Adjustment to eliminate the historical book value and accumulated depreciation, depletion and amortization of Founders oil and gas properties as of June 30, 2023.
(c)Adjustment to reflect the assets acquired of Founders, on a relative fair value basis.
(d)Adjustment to record new borrowings related to the cash consideration used in the Founders Acquisition.
(e)Adjustment to reflect the fair value of the $15.0 million deferred payment to be made in connection with the Founders Acquisition.
(f)Adjustment to reflect the fair value of Founders suspense liabilities assumed as of August 15, 2023.
(g)Adjustment to reflect the cash consideration paid for the Founders Acquisition.
(h)Adjustment to reflect asset retirement obligations associated with the Founders Acquisition properties.
(i)Adjustment to reflect the property taxes assumed as part of the Founders Acquisition.
(j)Adjustment for transaction expenses incurred for the Founders Acquisition.






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Unaudited Pro Forma Condensed Combined Statements of Operations

The following adjustments were made in the preparation of the Unaudited Pro Forma Condensed Combined Statements of Operations for the Six Months Ended June 30, 2023 and the Year Ended December 31, 2022:

(a)Adjustment to conform Founders fiscal year end of September 30, 2022 and interim nine months ended June 30, 2023 to the calendar year end and six months ended June 30, 2023 presented by Ring. In order to present a comparable unaudited pro forma condensed combined statements of operations for the six months ended June 30, 2023, Ring removed revenues and expenses for the three months ended December 31, 2022 from the unaudited condensed consolidated statement of income for the nine months ended June 30, 2023 of Founders. Similarly, in order to present a comparable unaudited pro forma condensed combined statements of operations for the calendar year ended December 31, 2022, Ring removed revenues and expenses for the three months ended December 31, 2021 and added in revenues and expenses for the three months ended December 31, 2022 to the consolidated statement of income for the fiscal year ended September 30, 2022 of Founders.
(b)Adjustments to conform Founders revenue presentation to the presentation of revenues for Ring.
(c)Adjustment to conform Founders other revenue presentation to the presentation by Ring.
(d)Adjustment to conform Founders production expenses to the presentation by Ring.
(e)Adjustment to conform Founders production taxes and revenue deductions to the presentation by Ring.
(f)Adjustment to conform Founders other expense to the presentation by Ring.
(g)Adjustment to reflect the estimated interest expense in the periods presented with respect to the incremental borrowings necessary to finance the Founders Acquisition. The interest rate utilized as of June 30, 2023 was 8.7% per annum for incremental borrowings. A one-eighth point change in interest rates as of June 30, 2023 would change interest expense by $0.1 million for the six months ended June 30, 2023 and by $0.1 million for the year ended December 31, 2022.
(h)Adjustment to reflect the amortization of the discount resulting from the difference between the principal amount of the deferred payment and the original fair value recognized. The deferred payment of $15.0 million is originally recognized at its fair value of $14.7 million as part of the consideration paid in connection with the Founders Acquisition. 
(i)Represents depreciation, depletion, and amortization expense resulting from the change in basis of property and equipment acquired and accretion expense from new asset retirement obligations recognized as a result of the Founders Acquisition. The depletion adjustment was calculated using the unit-of-production method under the full cost method of accounting using estimated proved reserves and production volumes attributable to the acquired assets.
(j)Adjustment to conform Founders realized gain on property sales to the presentation by Ring.
(k)The following table reconciles historical and pro forma basic and diluted earnings per share for the period indicated (in thousands, except share and per share amounts):
   For the Six Months Ended Year Ended
   June 30, 2023 December 31, 2022
   Historical Pro-Forma Historical Pro-Forma
Net Income $ 61,507 $ 74,260 $ 138,635$ 161,059
Basic Weighted-Average Shares Outstanding 185,545,775 185,545,775 121,264,175121,264,175
Effect of dilutive securities:     
 Stock options   83,38483,384
 Restricted stock units 1,192,039 1,192,039 2,040,1812,040,181
 Performance stock units 241,140 241,140 248,206248,206
 Common warrants 6,045,012 6,045,01218,118,72218,118,722
Diluted Weighted-Average Shares Outstanding 193,023,966 193,023,966 141,754,668141,754,668
Basic Earnings per Share $ 0.33 $ 0.40 $ 1.14$ 1.33
Diluted Earnings per Share $ 0.32 $ 0.38 $ .98$ 1.14


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4.Supplemental Unaudited Pro Forma Combined Oil and Natural Gas Reserves and Standardized Measure Information

The following tables set forth information with respect to the historical and pro forma combined estimated oil and natural gas reserves as of December 31, 2022 for Ring and as of September 30, 2022 for Founders. The reserve information of Ring has been prepared by Cawley, Gillespie & Associates, Inc., independent petroleum engineers. Founders reserve information has been prepared by Ryder Scott Company, L.P., independent petroleum engineers. The following unaudited pro forma combined proved reserve information is not necessarily indicative of the results that might have occurred had the Founders Acquisition taken place on January 1, 2022, nor is it intended to be a projection of future results. The accuracy of any reserve estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. Periodic revisions or removals of estimated reserves and future cash flows may be necessary as a result of a number of factors, including reservoir performance, new drilling, crude oil and natural gas prices, changes in costs, technological advances, new geological or geophysical data, changes in business strategies, or other economic factors. Accordingly, proved reserve estimates may differ significantly from the quantities of crude oil and natural gas ultimately recovered. For both Ring and Founders, the reserve estimates shown below were determined using the average first day of the month price for each of the preceding 12 months for oil and natural gas for the years ended December 31, 2022 and September 30, 2022, respectively.

Estimated Oil and Natural Gas Reserves
  As of December 31, 2022As of September 30, 2022
Ring
Founders(2)
 Pro Forma Combined
Estimated Proved Developed Reserves:
Oil (MBbl)57,0122,39859,410
Natural Gas (MMcf)106,3994,409110,808
Natural Gas Liquids (MBbl)15,333
                      —
15,333
Total (Mboe)(1)
90,0783,13493,212
Estimated Proved Undeveloped Reserves:
Oil (MBbl)31,693
                       —
31,693
Natural Gas (MMcf)51,471
                      —
51,471
Natural Gas Liquids (MBbl)7,773
                      —
7,773
Total (Mboe)(1)
48,045
                      —
48,045
Estimated Proved Reserves:
Oil (MBbl)88,7052,39891,103
Natural Gas (MMcf)157,8704,409162,279
Natural Gas Liquids (MBbl)23,106
                      —
23,106
Total (Mboe)(1)
138,1233,134141,257
(1) Assumes a ratio of 6 Mcf of natural gas per Boe
(2) Founders reported on a two stream basis, combining natural gas liquids with natural gas.

The following table presents the Standardized Measure of Discounted Future Net Cash Flows (as defined by FASB Accounting Standards Codification 932) relating to the proved crude oil and natural gas reserves of Ring and of the properties acquired in the Founders Acquisition on a pro forma combined basis as of December 31, 2022 for Ring and September 30, 2022 for Founders. The Pro Forma Combined Standardized Measure shown below represents estimates only and should not be construed as the market value of either Founders crude oil and natural gas reserves or the acquired crude oil and natural gas reserves attributable to the Founders Acquisition.

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Standardized Measure of Discounted Future Cash Flows
(in thousands)
As of December 31, 2022As of September 30, 2022
RingFounders 
Transaction Adjustment (1)
Pro Forma Combined
Oil and Gas Producing Activities:
Future cash inflows$ 9,871,961$ 247,895$ 10,119,856
Future production costs(2,751,896)(96,787)(2,848,683)
Future development costs(647,197)(647,197)
Future production taxes(12,300)(12,300)
Future income tax expense(1,142,148)(20,033)(1,162,181)
Future net cash flows5,330,720138,808(20,033)5,449,495
10% annual discount factor(3,058,607)(41,109)
5,032
(3,094,684)
Standardized measure of discounted future net cash flows$ 2,272,113$ 97,699(15,001)$ 2,354,811
(1) Pro forma adjustment represents effect of income tax on the undiscounted and discounted future net cash flows associated with the Founders Acquisition.

The following table sets forth the changes in the Standardized Measure of discounted future net cash flows attributable to estimated net proved crude oil and natural gas reserves of Ring and Founders on a pro forma combined basis for the year ending December 31, 2022 and September 30, 2022, respectively:

Changes in Standardized Measure of Discounted Future Net Cash Flows
(in thousands)
For the Year Ended December 31, 2022For the Year Ended September 30, 2022
RingFounders 
Transaction Adjustment (1)
Pro Forma Combined
Oil and Gas Producing Activities:
Beginning of the year$ 1,137,364$ 41,936$ (6,439)$ 1,172,861
Purchase of minerals in place996,313996,313
Extensions, discoveries and improved recovery20,44820,448
Development costs incurred during the year67,45567,455
Sales of oil and gas produced, net of production costs(283,588)(43,957)(327,545)
Sales of minerals in place
Accretion of discount133,2104,194(644)136,760
Net changes in price and production costs646,81926,814673,633
Net changes in estimated future development costs(53,254)(53,254)
Revisions of previous quantity estimates33,58468,712102,296
Changes in estimated timing of cash flows(119,428)(119,428)
Net change in income taxes(306,810)(7,918)(314,728)
End of year
 $ 2,272,113
 $ 97,699
$ (15,001)
 $ 2,354,811
(1) Pro forma adjustment represents effect of income tax on the undiscounted and discounted future net cash flows associated with the Founders Acquisition.

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