
	December 31, 2023								December 31, 2022
	Fixed Rate		Variable Rate		Non-accrual		Total		Fixed Rate		Variable Rate		Non- accrual		Total
Commercial	$	3,558,563	$	11,135,075	$	110,131	$	14,803,769	$	3,392,422	$	10,759,780	$	60,297	$	14,212,499
Commercial real estate	791,757		4,538,570		7,320		5,337,647		874,716		3,715,491		16,570		4,606,777
Loans to individuals	2,282,914		1,452,620		28,018		3,763,552		2,099,165		1,593,779		44,930		3,737,874
Total	$	6,633,234	$	17,126,265	$	145,469	$	23,904,968	$	6,366,303	$	16,069,050	$	121,797	$	22,557,150
Foregone interest on nonaccrual loans							$	7,863							$	6,796

At December 31, 2023, loans to businesses and individuals with collateral primarily located in Texas totaled $7.6 billion or 32% of the total loan portfolio. Loans to businesses and individuals with collateral primarily located in Oklahoma totaled $3.3 billion or 14% of our total loan portfolio. Loans to businesses and individuals with collateral primarily located in Colorado totaled $2.7 billion or 11% of our total loan portfolio. Loans for which the collateral location is not relevant, such as unsecured loans and reserve-based energy loans, are distributed by the borrower’s primary operating location. These geographic concentrations subject the loan portfolio to the general economic conditions within these areas.

Commercial loans represent loans for working capital, facilities acquisition or expansion, purchases of equipment and other needs of commercial customers primarily located within our geographical footprint. Commercial loans are underwritten individually and represent on-going relationships based on a thorough knowledge of the customer, the customer’s industry and market. While commercial loans are generally secured by the customer’s assets including real property, inventory, accounts receivable, operating equipment, interest in mineral rights and other property and may also include personal guarantees of the owners and related parties, the primary source of repayment of the loans is the on-going cash flow from operations of the customer’s business. Inherent lending risk is centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with commercial lending policies.

At December 31, 2023, commercial loans with collateral primarily located in Texas totaled $4.8 billion or 33% of the commercial loan portfolio segment. Commercial loans with collateral primarily located in Oklahoma totaled $1.8 billion or 12% of the commercial loan portfolio segment. Commercial loans with collateral primarily located in Colorado totaled $1.8 billion or 12% of the commercial loan portfolio segment. The commercial loan portfolio segment is further divided into loan classes. The healthcare loan class totaled $4.1 billion or 17% of total loans. The healthcare loan class consists primarily of loans for the development and operation of senior housing and care facilities, including independent living, assisted living and skilled nursing. Healthcare also includes loans to hospitals and other medical service providers. The services loan class totaled $3.6 billion or 15% of total loans. Approximately $1.6 billion of loans in the services class consisted of loans with individual balances of less than $10 million. Businesses included in the services class include Native American tribal and state and local municipal government entities, Native American tribal casino operations, educational services, foundations and not-for-profit organizations and specialty trade contractors. The energy loan class totaled $3.4 billion or 14% of total loans, including $2.7 billion of outstanding loans to energy producers. Approximately 69% of the committed production loans are secured by properties primarily producing oil and 31% of the committed production loans are secured by properties primarily producing natural gas.

At December 31, 2022, commercial loans with collateral primarily located in Texas totaled $4.7 billion or 33% of the commercial loan portfolio segment, commercial loans with collateral primarily located in Oklahoma totaled $2.1 billion or 15% of the commercial loan portfolio segment and commercial loans with collateral primarily located in Colorado totaled $1.8 billion or 12% of the commercial loan portfolio segment. The healthcare loan class totaled $3.8 billion or 17% of total loans. The services loan class totaled $3.4 billion or 15% of total loans. Approximately $1.6 billion of loans in the services category consisted of loans with individual balances of less than $10 million. The energy loan class totaled $3.4 billion or 15% of total loans, including $2.7 billion of outstanding loans to energy producers. At December 31, 2022, approximately 72% of committed production loans were secured by properties primarily producing oil and 28% were secured by properties producing natural gas.

Commercial real estate loans are for the construction of buildings or other improvements to real estate and property held by borrowers for investment purposes primarily within our geographical footprint. We require collateral values in excess of the loan amounts, demonstrated cash flows in excess of expected debt service requirements, equity investment in the project and a portion of the project already sold, leased or permanent financing already secured. The expected cash flows from all significant new or renewed income producing property commitments are stress tested to reflect the risks in varying interest rates, vacancy rates and rental rates. As with commercial loans, inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with applicable lending policies.

Loans to individuals include residential mortgage and personal loans. Residential mortgage loans provide funds for our customers to purchase or refinance their primary residence or to borrow against the equity in their home. These loans are secured by a first or second mortgage on the customer's primary residence. Personal loans consist primarily of loans to Wealth Management clients secured by the cash surrender value of insurance policies and marketable securities. Personal loans also include direct loans secured by and for the purchase of automobiles, recreational and marine equipment as well as unsecured loans. These loans are made in accordance with underwriting policies we believe to be conservative and are fully documented. Loans may be individually underwritten or credit scored based on size and other criteria. Credit scoring is assessed based on significant credit characteristics including credit history, residential and employment stability.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. At December 31, 2023, outstanding commitments totaled $14.8 billion. Because some commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. BOK Financial uses the same credit policies in making commitments as it does loans.

Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Because the credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan commitments, BOK Financial uses the same credit policies in evaluating the creditworthiness of the customer. Additionally, BOK Financial uses the same evaluation process in obtaining collateral on standby letters of credit as it does for loan commitments. The term of these standby letters of credit is defined in each commitment and typically corresponds with the underlying loan commitment. At December 31, 2023, outstanding standby letters of credit totaled $711 million.

BOK Financial maintains an allowance for loan losses and accrual for off-balance sheet credit risk from unfunded commitments. The allowance consists of specific allowances attributed to certain individual loans, generally nonaccruing loans, with dissimilar risk characteristics that have not yet been charged down to amounts we expect to recover and general allowances for estimated credit losses on pools of loans that share similar risk characteristics based on probability of default, loss given default and exposure at default for each loan class developed based on current and forecasted relevant economic loss drivers.


	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	131,586	$	57,648	$	46,470	$	235,704


Provision for loan losses	19,308		42,151		(1,941)		59,518
Loans charged off	(12,898)		(8,446)		(5,972)		(27,316)
Recoveries of loans previously charged off	3,236		3,365		2,616		9,217
Ending balance	$	141,232	$	94,718	$	41,173	$	277,123

Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	18,246	$	40,490	$	2,183	$	60,919


Provision for off-balance sheet credit risk	1,516		(13,051)		(407)		(11,942)
Ending balance	$	19,762	$	27,439	$	1,776	$	48,977


	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	162,056	$	58,553	$	35,812	$	256,421


Provision for loan losses	(12,782)		(813)		14,023		428
Loans charged off	(22,382)		(269)		(6,095)		(28,746)
Recoveries of loans previously charged off	4,694		177		2,730		7,601
Ending balance	$	131,586	$	57,648	$	46,470	$	235,704

Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	13,812	$	17,442	$	1,723	$	32,977


Provision for off-balance sheet credit risk	4,434		23,048		460		27,942
Ending balance	$	18,246	$	40,490	$	2,183	$	60,919


	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	254,934	$	86,558	$	47,148	$	388,640


Provision for loan losses	(59,326)		(26,522)		(9,354)		(95,202)
Loans charged off	(43,956)		(2,485)		(4,910)		(51,351)
Recoveries	10,404		1,002		2,928		14,334
Ending balance	$	162,056	$	58,553	$	35,812	$	256,421

Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	14,422	$	20,571	$	1,928	$	36,921


Provision for off-balance sheet credit losses	(610)		(3,129)		(205)		(3,944)
Ending balance	$	13,812	$	17,442	$	1,723	$	32,977


	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	14,693,638	$	138,540	$	110,131	$	2,692	$	14,803,769	$	141,232
Commercial real estate	5,330,327		94,718		7,320		—		5,337,647		94,718
Loans to individuals	3,735,534		41,173		28,018		—		3,763,552		41,173
Total	$	23,759,499	$	274,431	$	145,469	$	2,692	$	23,904,968	$	277,123


	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	14,152,202	$	127,566	$	60,297	$	4,020	$	14,212,499	$	131,586
Commercial real estate	4,590,207		56,098		16,570		1,550		4,606,777		57,648
Loans to individuals	3,692,944		46,470		44,930		—		3,737,874		46,470
Total	$	22,435,353	$	230,134	$	121,797	$	5,570	$	22,557,150	$	235,704

The Company utilizes risk grading as primary credit quality indicators as it influences the probability of default which is a key attribute in the expected credit losses calculation. Substantially all commercial as well as commercial real estate loans and certain loans to individuals are risk graded based on a quarterly evaluation of the borrowers’ ability to repay the loans. Certain commercial loans and most loans to individuals are small, homogeneous pools that are not risk-graded. The credit quality of these loans is based on past due days in accordance with regulatory guidelines.

We have included in the credit quality indicator "pass" loans that are in compliance with the original terms of the agreement and currently exhibit no factors that cause management to have doubts about the borrowers’ ability to remain in compliance with the original terms of the agreement, which is consistent with the regulatory guideline of "pass." This also includes past due residential mortgages that are guaranteed by agencies of the U.S. government that continue to accrue interest based on criteria of the guarantors’ programs.

The risk grading process identifies certain loans that have a well-defined weakness (for example, inadequate debt service coverage or liquidity or marginal capitalization; repayment may depend on collateral or other risk mitigation) that may jeopardize liquidation of the debt and represent a greater risk due to deterioration in the financial condition of the borrower. This is consistent with the regulatory guideline for "substandard." Because the borrowers are still performing in accordance with the original terms of the loan agreements, these loans remain on accruing status. Non-graded loans 60 to 89 days past due are categorized as Accruing Substandard.


	Origination Year
	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Commercial:
Healthcare
Pass	$	650,768	$	895,602	$	590,736	$	409,001	$	331,897	$	809,858	$	281,378	$	15	$	3,969,255
Special Mention	—		—		—		21,791		—		31,235		5		—		53,031
Accruing Substandard	—		2,128		18,508		6,911		—		10,896		975		—		39,418
Nonaccrual	—		—		—		30,290		23,129		28,110		—		—		81,529
Total healthcare	650,768		897,730		609,244		467,993		355,026		880,099		282,358		15		4,143,233
Loans charged off, year-to-date	—		—		—		—		2,500		—		—		—		2,500


Energy
Pass	190,122		100,006		43,769		7,876		9,562		11,583		3,025,590		—		3,388,508
Special Mention	—		—		—		—		—		—		13,950		—		13,950
Accruing Substandard	—		—		—		—		—		—		16,800		—		16,800
Nonaccrual	—		—		—		—		—		99		17,744		—		17,843
Total energy	190,122		100,006		43,769		7,876		9,562		11,682		3,074,084		—		3,437,101
Loans charged off, year-to-date	—		—		—		—		—		—		—		—		—


Services
Pass	900,090		526,776		401,872		228,818		106,112		643,477		730,729		595		3,538,469
Special Mention	—		1,085		1,520		1,341		534		4,522		81		—		9,083
Accruing Substandard	—		13,712		178		326		3,972		3,746		3,108		13		25,055
Nonaccrual	—		—		1,635		338		—		—		1,643		—		3,616
Total services	900,090		541,573		405,205		230,823		110,618		651,745		735,561		608		3,576,223
Loans charged off, year-to-date	—		—		3,060		—		—		—		2,642		—		5,702


General business
Pass	942,468		436,832		224,735		138,951		101,100		287,744		1,389,128		2,164		3,523,122
Special Mention	10,264		16,167		8,420		1,253		321		8,295		897		—		45,617
Accruing Substandard	4,401		33,194		1,716		27		—		—		31,992		—		71,330
Nonaccrual	—		1,134		—		—		—		48		5,956		5		7,143
Total general business	957,133		487,327		234,871		140,231		101,421		296,087		1,427,973		2,169		3,647,212
Loans charged off, year-to-date	—		—		4,598		2		—		48		10		38		4,696


Total commercial	2,698,113		2,026,636		1,293,089		846,923		576,627		1,839,613		5,519,976		2,792		14,803,769

Commercial real estate:
Pass	396,891		1,941,913		1,194,759		416,647		513,555		705,092		136,095		—		5,304,952
Special Mention	—		476		—		—		—		19,171		—		—		19,647
Accruing Substandard	2,992		—		3		—		—		2,733		—		—		5,728
Nonaccrual	—		—		—		—		7,170		150		—		—		7,320
Total commercial real estate	399,883		1,942,389		1,194,762		416,647		520,725		727,146		136,095		—		5,337,647
Loans charged off, year-to-date	—		—		—		—		—		8,446		—		—		8,446


	Origination Year
	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	426,089		320,733		342,927		349,742		54,801		243,356		375,739		23,895		2,137,282
Special Mention	157		140		131		1,361		18		134		2,982		93		5,016
Accruing Substandard	—		150		—		—		37		49		50		—		286
Nonaccrual	79		1,419		237		544		344		12,381		2,387		665		18,056
Total residential mortgage	426,325		322,442		343,295		351,647		55,200		255,920		381,158		24,653		2,160,640
Loans charged off, year-to-date	—		—		51		4		—		17		—		1		73


Residential mortgage guaranteed by U.S. government agencies
Pass	633		1,788		2,220		4,297		6,441		124,719		—		—		140,098


Nonaccrual	—		—		—		280		375		9,054		—		—		9,709
Total residential mortgage guaranteed by U.S. government agencies	633		1,788		2,220		4,577		6,816		133,773		—		—		149,807



Personal
Pass	218,401		229,580		149,291		136,215		75,348		137,629		503,841		145		1,450,450
Special Mention	66		39		106		30		8		—		1,918		3		2,170
Accruing Substandard	—		64		12		9		144		—		3		—		232
Nonaccrual	4		51		9		16		3		12		158		—		253
Total personal	218,471		229,734		149,418		136,270		75,503		137,641		505,920		148		1,453,105
Loans charged off, year-to-date1	5,636		82		96		43		—		10		6		26		5,899


Total loans to individuals	645,429		553,964		494,933		492,494		137,519		527,334		887,078		24,801		3,763,552
Total loans	$	3,743,425	$	4,522,989	$	2,982,784	$	1,756,064	$	1,234,871	$	3,094,093	$	6,543,149	$	27,593	$	23,904,968


	Origination Year
	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Commercial:
Healthcare
Pass	$	932,097	$	604,886	$	476,854	$	404,204	$	464,989	$	618,163	$	245,898	$	20	$	3,747,111
Special Mention	—		—		—		20,071		—		18,859		4		—		38,934
Accruing Substandard	—		—		—		—		—		14,304		3,634		—		17,938
Nonaccrual	—		—		—		26,480		6,373		8,181		—		—		41,034
Total healthcare	932,097		604,886		476,854		450,755		471,362		659,507		249,536		20		3,845,017



Energy
Pass	157,745		76,951		30,284		12,783		5,992		4,980		3,104,906		—		3,393,641

Accruing Substandard	—		—		—		664		385		683		28,018		—		29,750
Nonaccrual	—		—		—		—		—		159		1,240		—		1,399
Total energy	157,745		76,951		30,284		13,447		6,377		5,822		3,134,164		—		3,424,790



Services
Pass	821,785		496,510		286,085		193,481		156,736		696,300		722,371		639		3,373,907
Special Mention	502		5,139		989		771		894		1,345		8,668		—		18,308
Accruing Substandard	—		—		—		2,459		43		2,789		17,665		122		23,078
Nonaccrual	—		5,570		449		—		—		2,389		7,820		—		16,228
Total services	822,287		507,219		287,523		196,711		157,673		702,823		756,524		761		3,431,521



General business
Pass	725,894		361,839		198,274		172,878		139,140		283,694		1,570,536		2,329		3,454,584
Special Mention	17,759		13,065		208		71		7		2,291		7,094		26		40,521
Accruing Substandard	—		2,169		66		4,130		4,680		3,287		94		4		14,430
Nonaccrual	—		—		1,052		14		72		5		485		8		1,636
Total general business	743,653		377,073		199,600		177,093		143,899		289,277		1,578,209		2,367		3,511,171



Total commercial	2,655,782		1,566,129		994,261		838,006		779,311		1,657,429		5,718,433		3,148		14,212,499

Commercial real estate:
Pass	1,188,483		1,158,002		552,616		641,102		247,625		633,304		161,616		—		4,582,748

Accruing Substandard	—		—		—		7,459		—		—		—		—		7,459
Nonaccrual	—		—		—		—		—		16,570		—		—		16,570
Total commercial real estate	1,188,483		1,158,002		552,616		648,561		247,625		649,874		161,616		—		4,606,777


	Origination Year
	2022		2021		2020		2019		2018		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	354,497		373,190		393,002		63,142		40,525		260,625		352,126		22,176		1,859,283
Special Mention	—		81		42		—		142		388		527		87		1,267
Accruing Substandard	—		—		187		—		—		138		117		1		443
Nonaccrual	32		1,656		2,717		362		1,904		20,139		2,216		765		29,791
Total residential mortgage	354,529		374,927		395,948		63,504		42,571		281,290		354,986		23,029		1,890,784



Residential mortgage guaranteed by U.S. government agencies
Pass	289		2,254		9,000		10,722		17,244		191,426		—		—		230,935


Nonaccrual	—		—		299		1,460		2,319		10,927		—		—		15,005
Total residential mortgage guaranteed by U.S. government agencies	289		2,254		9,299		12,182		19,563		202,353		—		—		245,940



Personal
Pass	254,497		193,095		154,887		172,114		68,871		201,278		549,187		332		1,594,261
Special Mention	47		28		40		12		17		—		6,003		4		6,151
Accruing Substandard	—		444		—		160		—		—		—		—		604
Nonaccrual	38		7		12		22		14		18		23		—		134
Total personal	254,582		193,574		154,939		172,308		68,902		201,296		555,213		336		1,601,150



Total loans to individuals	609,400		570,755		560,186		247,994		131,036		684,939		910,199		23,365		3,737,874
Total loans	$	4,453,665	$	3,294,886	$	2,107,063	$	1,734,561	$	1,157,972	$	2,992,242	$	6,790,248	$	26,513	$	22,557,150


	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	81,529	$	40,372	$	41,157	$	1,478
Energy	17,843		17,843		—		—
Services	3,616		1,684		1,932		1,214
General business	7,143		7,143		—		—
Total commercial	110,131		67,042		43,089		2,692

Commercial real estate	7,320		7,320		—		—

Loans to individuals:
Residential mortgage	18,056		18,056		—		—
Residential mortgage guaranteed by U.S. government agencies	9,709		9,709		—		—
Personal	253		253		—		—
Total loans to individuals	28,018		28,018		—		—

Total	$	145,469	$	102,380	$	43,089	$	2,692


	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	41,034	$	34,661	$	6,373	$	946
Energy	1,399		1,399		—		—
Services	16,228		7,835		8,393		3,074
General business	1,636		1,636		—		—
Total commercial	60,297		45,531		14,766		4,020

Commercial real estate	16,570		393		16,177		1,550

Loans to individuals:
Residential mortgage	29,791		29,791		—		—
Residential mortgage guaranteed by U.S. government agencies	15,005		15,005		—		—
Personal	134		134		—		—
Total loans to individuals	44,930		44,930		—		—

Total	$	121,797	$	90,854	$	30,943	$	5,570

At December 31, 2023 the Company had $130 million of loan modifications to borrowers experiencing financial difficulty, including $67 million of general business loans, $47 million of healthcare loans and $13 million of residential mortgage loans guaranteed by U.S. government agencies. Modifications generally consist of interest rate reductions, an other than insignificant payment delay, term extension or a combination. Approximately $93 million of the modifications are term extensions of general business, healthcare and services loans, and $36 million are combination modifications to healthcare loans and residential mortgage loans guaranteed by U.S. government agencies. During the twelve months ended December 31, 2023, $4.8 million of residential mortgage loans guaranteed by U.S. government agencies were modified and subsequently defaulted. A payment default is defined as being 30 or more days past due after modification.


			Past Due
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total		Past Due 90 Days or More and Accruing
Commercial:
Healthcare	$	4,071,336	$	18,019	$	30,290	$	23,588	$	4,143,233	$	—
Services	3,575,787		2		—		434		3,576,223		—
Energy	3,437,101		—		—		—		3,437,101		—
General business	3,639,775		412		1,157		5,868		3,647,212		—
Total commercial	14,723,999		18,433		31,447		29,890		14,803,769		—

Commercial real estate	5,327,481		2,992		—		7,174		5,337,647		3



Loans to individuals:
Permanent mortgage	2,149,927		6,340		1,494		2,879		2,160,640		36
Permanent mortgages guaranteed by U.S. government agencies	54,122		25,085		17,053		53,547		149,807		48,201
Personal	1,450,302		2,561		88		154		1,453,105		131
Total loans to individuals	3,654,351		33,986		18,635		56,580		3,763,552		48,368

Total	$	23,705,831	$	55,411	$	50,082	$	93,644	$	23,904,968	$	48,371


			Past Due
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total		Past Due 90 Days or More and Accruing
Commercial:
Healthcare	$	3,812,164	$	5,914	$	26,480	$	459	$	3,845,017	$	—
Services	3,423,042		1,060		2,461		4,958		3,431,521		—
Energy	3,424,766		24		—		—		3,424,790		—
General business	3,509,094		257		1,424		396		3,511,171		396
Total commercial	14,169,066		7,255		30,365		5,813		14,212,499		396

Commercial real estate	4,606,029		531		—		217		4,606,777		—



Loans to individuals:
Permanent mortgage	1,872,155		10,632		1,828		6,169		1,890,784		114
Permanent mortgages guaranteed by U.S. government agencies	108,019		36,119		19,400		82,402		245,940		75,604
Personal	1,600,595		502		21		32		1,601,150		—
Total loans to individuals	3,580,769		47,253		21,249		88,603		3,737,874		75,718

Total	$	22,355,864	$	55,039	$	51,614	$	94,633	$	22,557,150	$	76,114