NSTS Bancorp, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Note 4 - Allowance for Credit Losses

Note 4 - Allowance for Credit Losses

12 Months Ended

Dec. 31, 2025

Allowance for Credit Losses [Text Block]

Note 4: Allowance for Credit Losses

The following tables present the activity in the allowance for credit losses for the years ended December 31, 2025 and 2024:

	*December 31, 2025*
	*1-4 family residential*			*Multi-family*		*Commercial*			*Construction*			*Consumer*			*Total*
	(Dollars in thousands)
Year ended:
Beginning balance	$	1,056		$	37	$	41		$	65		$	2		$	1,201
Charge-offs		—			—		—			—			—			—
Recoveries		—			—		—			—			99			99
Net recoveries (charge-offs)		—			—		—			—			99			99
(Release of) Provision for credit losses		(67	)		2		(4	)		(4	)		(99	)		(172	)
Ending balance	$	989		$	39	$	37		$	61		$	2		$	1,128

	*December 31, 2024*
	*1-4 family residential*			*Multi-family*			*Commercial*		*Construction*		*Consumer*		*Total*
	(Dollars in thousands)
Year ended:
Beginning balance	$	1,094		$	40		$	37	$	4	$	1	$	1,176
Charge-offs		—			—			—		—		—		—
Recoveries		—			—			—		—		—		—
Net recoveries (charge-offs)		—			—			—		—		—		—
Provision for (release of) credit losses		(38	)		(3	)		4		61		1		25
Ending balance	$	1,056		$	37		$	41	$	65	$	2	$	1,201

The ACL on loans excludes $40,000 and $60,000 of allowance for off-balance sheet exposures as of December 31, 2025 and 2024, respectively, recorded within Other Liabilities on the Consolidated Balance Sheets. Off-balance sheet exposures consist of unused lines of credit, the unused portion of construction loans and commitments to originate loans. The net release of provision for credit losses for the year ended December 31, 2025 in the table above excludes a release of provision for credit losses of $20,000 related to off balance sheet exposures. The net provision for credit losses for the year ended December 31, 2024 in the table above excludes a provision for credit losses of $46,000 related to off balance sheet exposures.

There were two collateral dependent loans, totaling $284,000, as of December 31, 2025 in the one to four-family residential loan segment. These loans are collateralized by residential real estate and have no ACL as of December 31, 2025. There were no other collateral dependent loans as of December 31, 2025. There were no collateral dependent loans as of December 31, 2024.

The Bank evaluates collectability based on payment activity and other factors. The Bank uses a graded loan rating system as a means of identifying potential problem loans, as follows:

Pass

Loans in these categories are performing as expected with low to average risk.

Special Mention

Loans in this category are internally designated by management as “watch loans.” These loans are starting to show signs of potential weakness and are closely monitored by management.

Substandard

Loans in this category are internally designated by management as “substandard.” Generally, a loan is considered substandard if it is inadequately protected by the paying capacity of the obligors or the current net worth of the collateral pledged. Substandard loans present a distinct possibility that the Bank will sustain losses if such weaknesses are not corrected.

Doubtful

Loans classified as doubtful have all the weaknesses inherent in those designated as “substandard” with the added characteristic that the weaknesses may make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable.

On an annual basis, or more often if needed, the Bank formally reviews the ratings on commercial loans. In addition, the Bank performs an independent review of a significant portion of the commercial loan portfolio. Management uses the results of the independent review as part of its annual review process.

The following tables present the credit risk profile of the Company's loan portfolio based on risk rating category and year of origination as of December 31, 2025 and 2024.

	As of December 31, 2025
	Term loans amortized cost basis by origination year
	2025		2024		2023		2022		2021		Prior		Revolving loans amortized cost basis		Revolving loans converted to term loans amortized cost basis		Total
	(Dollars in thousands)
1-4 family residential
Pass	$	16,653	$	13,335	$	16,423	$	10,870	$	16,434	$	37,769	$	6,454	$	—		117,938
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		262		—		—		—		22		—		—		284
Total 1-4 family residential		16,653		13,597		16,423		10,870		16,434		37,791		6,454		—		118,222
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—
Multi-family
Pass		—		507		—		—		221		2,512		—		—		3,240
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—		—
Total multi-family		—		507		—		—		221		2,512		—		—		3,240
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—
Commercial
Pass		—		—		165		—		92		2,834		722		—		3,813
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—		—
Total commercial		—		—		165		—		92		2,834		722		—		3,813
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—
Construction
Pass		2,156		1,676		89		—		—		—		—		—		3,921
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—		—
Total construction		2,156		1,676		89		—		—		—		—		—		3,921
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—
Consumer
Pass		130		46		47		40		3		2		—		—		268
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—		—
Total consumer		130		46		47		40		3		2		—		—		268
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—
Total
Pass		18,939		15,564		16,724		10,910		16,750		43,117		7,176		—		129,180
Special Mention		—		—		—		—		—		—		—		—		—
Substandard		—		262		—		—		—		22		—		—		284
Total		18,939		15,826		16,724		10,910		16,750		43,139		7,176		—		129,464
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—		—

	As of December 31, 2024
	Term loans amortized cost basis by origination year
	2024		2023		2022		2021		Prior		Revolving loans amortized cost basis		Revolving loans converted to term loans amortized cost basis		Total
	(Dollars in thousands)
1-4 family residential
Pass	$	20,577	$	20,986	$	12,421	$	18,074	$	43,245	$	4,106	$	—	$	119,409
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total 1-4 family residential		20,577		20,986		12,421		18,074		43,245		4,106		—		119,409
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—
Multi-family
Pass		515		—		—		230		2,623		—		—		3,368
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total multi-family		515		—		—		230		2,623		—		—		3,368
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—
Commercial
Pass		148		301		—		96		3,158		494		—		4,197
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total commercial		148		301		—		96		3,158		494		—		4,197
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—
Construction
Pass		3,134		517		—		—		—		—		—		3,651
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total construction		3,134		517		—		—		—		—		—		3,651
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—
Consumer
Pass		127		77		58		18		2		—		—		282
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total consumer		127		77		58		18		2		—		—		282
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—
Total
Pass		24,501		21,881		12,479		18,418		49,028		4,600		—		130,907
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Total		24,501		21,881		12,479		18,418		49,028		4,600		—		130,907
Current year-to-date gross write-offs		—		—		—		—		—		—		—		—

The aging of the Bank’s loan portfolio as of December 31, 2025 and 2024, is as follows:

	*31-89 Days Past Due and Accruing*		*Greater than 90 Days Past Due and Accruing*		*Non-Accrual*		*Total Past Due and Non-Accrual*		*Current*		*Total Loan Balance*
	(Dollars in thousands)
December 31, 2025
1-4 family residential	$	641	$	—	$	284	$	925	$	117,297	$	118,222
Multi-family		—		—		—		—		3,240		3,240
Commercial		—		—		—		—		3,813		3,813
Construction		—		—		—		—		3,921		3,921
Consumer		—		—		—		—		268		268
Total	$	641	$	—	$	284	$	925	$	128,539	$	129,464
December 31, 2024
1-4 family residential	$	371	$	—	$	—	$	371	$	119,038	$	119,409
Multi-family		—		—		—		—		3,368		3,368
Commercial		—		—		—		—		4,197		4,197
Construction		—		—		—		—		3,651		3,651
Consumer		—		—		—		—		282		282
Total	$	371	$	—	$	—	$	371	$	130,536	$	130,907

The following table presents the amortized cost basis of loans on nonaccrual status recorded at December 31, 2025 and 2024. As of January 1, 2024, the amortized cost basis of loans on nonaccrual status was $200,000.

	*December 31, 2025*				*December 31, 2024*
	*Nonaccrual with no Allowance for Credit Losses*		*Nonaccrual*		*Nonaccrual with no Allowance for Credit Losses*		*Nonaccrual*
	(Dollars in thousands)
First mortgage loans
1-4 family residential	$	284	$	284	$	—	$	—
Multi-family		—		—		—		—
Commercial		—		—		—		—
Construction		—		—		—		—
Consumer loans		—		—		—		—
Total loans	$	284	$	284	$	—	$	—

The Bank may modify loans to borrowers experiencing financial difficulty by providing modifications to repayment terms; more specifically, modifications to loan interest rates. Management performs an analysis at the time of loan modification. Any reserve required is recorded through a provision to the allowance for credit losses on loans. There were no modifications on loans to borrowers experiencing financial difficulty during the year ended December 31, 2025 and 2024.

The recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process is $262,000 as of December 31, 2025. There were no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process as of December 31, 2024.