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]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 2 - Securities - Amortized Cost and Estimated Fair Value of Debt Securities (Details)

v3.26.1

Note 2 - Securities - Amortized Cost and Estimated Fair Value of Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
1 year or less	$ 1,610	$ 1,000
1 to 5 years	42,112	28,556
5 to 10 years	25,222	30,591
After 10 years	9,775	11,102
Fair value	78,719	71,249
Gross unrealized gains	5	0
Gross unrealized losses	(8,063)	(12,037)
Amortized cost	86,777	83,286
US Treasury Notes Securities [Member]
1 year or less	0	0
1 to 5 years	7,085	0
5 to 10 years	0	0
After 10 years	0	0
Fair value	7,085	0
Gross unrealized gains	4	0
Gross unrealized losses	(7)	0
Amortized cost	7,088	0
US Government Agencies Debt Securities [Member]
1 year or less	0	1,000
1 to 5 years	7,208	3,047
5 to 10 years	1,326	4,610
After 10 years	0	0
Fair value	8,534	8,657
Gross unrealized gains	0	0
Gross unrealized losses	(685)	(1,062)
Amortized cost	9,219	9,719
Municipal Bonds [Member]
1 year or less	198	0
1 to 5 years	1,202	1,452
5 to 10 years	3,642	2,401
After 10 years	7,104	7,883
Fair value	12,146	11,736
Gross unrealized gains	0	0
Gross unrealized losses	(1,829)	(2,367)
Amortized cost	13,975	14,103
Residential Mortgage-Backed Securities [Member]
1 year or less	0	0
1 to 5 years	8,860	8,971
5 to 10 years	14,336	15,794
After 10 years	573	1,150
Fair value	23,769	25,915
Gross unrealized gains	0	0
Gross unrealized losses	(2,990)	(4,766)
Amortized cost	26,759	30,681
Commercial Mortgage-Backed Securities [Member]
1 year or less	1,412	0
1 to 5 years	17,757	15,086
5 to 10 years	5,918	7,786
After 10 years	2,098	2,069
Fair value	27,185	24,941
Gross unrealized gains	1	0
Gross unrealized losses	(2,552)	(3,842)
Amortized cost	$ 29,736	$ 28,783

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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