Note 3 - Investment Securities (Tables)

6 Months Ended

Jun. 30, 2025

Schedule of Available for Sale Securities, and Held to Maturity [Table Text Block]

			*Gross*		*Gross*
	*Amortized*		*Unrealized*		*Unrealized*			*Fair*
June 30, 2025	*Cost*		*Gains*		*Losses*			*Value*
Available for sale	*(dollars in thousands)*
Government agency securities	$	25,088	$	104	$	(253	)	$	24,939
SBA agency securities		23,837		155		(166	)		23,826
Mortgage-backed securities: residential		71,122		350		(5,375	)		66,097
Collateralized mortgage obligations: residential		130,793		724		(10,171	)		121,346
Collateralized mortgage obligations: commercial		95,350		187		(2,396	)		93,141
Commercial paper		44,771		—		(5	)		44,766
Corporate debt securities		32,700		63		(2,545	)		30,218
Municipal tax-exempt securities		12,585		—		(3,776	)		8,809
Total available for sale	$	436,246	$	1,583	$	(24,687	)	$	413,142

Held to maturity
Municipal tax-exempt securities	$	4,186	$	—	$	(191	)	$	3,995
Total held to maturity	$	4,186	$	—	$	(191	)	$	3,995

			*Gross*		*Gross*
	*Amortized*		*Unrealized*		*Unrealized*			*Fair*
December 31, 2024	*Cost*		*Gains*		*Losses*			*Value*
Available for sale	*(dollars in thousands)*
Government agency securities	$	21,592	$	—	$	(550	)	$	21,042
SBA agency securities		27,231		—		(467	)		26,764
Mortgage-backed securities: residential		62,351		—		(6,674	)		55,677
Collateralized mortgage obligations: residential		117,936		178		(12,638	)		105,476
Collateralized mortgage obligations: commercial		94,284		175		(2,803	)		91,656
Commercial paper		78,687		1		(3	)		78,685
Corporate debt securities		34,733		43		(2,961	)		31,815
Municipal tax-exempt securities		12,602		—		(3,527	)		9,075
Total available for sale	$	449,416	$	397	$	(29,623	)	$	420,190

Held to maturity
Municipal taxable securities	$	500	$	1	$	—		$	501
Municipal tax-exempt securities		4,691		—		(244	)		4,447
Total held to maturity	$	5,191	$	1	$	(244	)	$	4,948

Investments Classified by Contractual Maturity Date [Table Text Block]

	*One Year or Less*				*More than One Year to Five Years*				*More than Five Years to Ten Years*				*More than Ten Years*				*Total*
	*Amortized Cost*		*Fair Value*		*Amortized Cost*		*Fair Value*		*Amortized Cost*		*Fair Value*		*Amortized Cost*		*Fair Value*		*Amortized Cost*		*Fair Value*
June 30, 2025	*(dollars in thousands)*
Government agency securities	$	154	$	152	$	15,052	$	14,801	$	9,882	$	9,986	$	—	$	—	$	25,088	$	24,939
SBA agency securities		—		—		5,536		5,484		18,301		18,342		—		—		23,837		23,826
Mortgage-backed securities: residential		—		—		15,982		15,564		55,140		50,533		—		—		71,122		66,097
Collateralized mortgage obligations: residential		3,307		3,362		61,861		60,983		65,625		57,001		—		—		130,793		121,346
Collateralized mortgage obligations: commercial		4,993		4,934		41,040		40,862		49,317		47,345		—		—		95,350		93,141
Commercial paper		44,771		44,766		—		—		—		—		—		—		44,771		44,766
Corporate debt securities		2,017		1,998		12,430		12,139		15,650		14,190		2,603		1,891		32,700		30,218
Municipal tax-exempt securities		—		—		—		—		571		462		12,014		8,347		12,585		8,809
Total AFS	$	55,242	$	55,212	$	151,901	$	149,833	$	214,486	$	197,859	$	14,617	$	10,238	$	436,246	$	413,142

Municipal tax-exempt securities	$	—	$	—	$	860	$	840	$	2,815	$	2,653	$	511	$	502	$	4,186	$	3,995
Total HTM	$	—	$	—	$	860	$	840	$	2,815	$	2,653	$	511	$	502	$	4,186	$	3,995

December 31, 2024
Government agency securities	$	90	$	88	$	11,644	$	11,304	$	9,858	$	9,650	$	—	$	—	$	21,592	$	21,042
SBA agency securities		—		—		5,934		5,721		21,297		21,043		—		—		27,231		26,764
Mortgage-backed securities: residential		—		—		8,892		8,099		53,459		47,578		—		—		62,351		55,677
Collateralized mortgage obligations: residential		5,126		5,235		55,015		52,867		57,795		47,374		—		—		117,936		105,476
Collateralized mortgage obligations: commercial		705		704		38,811		38,527		54,768		52,425		—		—		94,284		91,656
Commercial paper		78,687		78,685		—		—		—		—		—		—		78,687		78,685
Corporate debt securities		2,000		1,989		11,886		11,706		18,233		16,250		2,614		1,870		34,733		31,815
Municipal tax-exempt securities		—		—		—		—		—		—		12,602		9,075		12,602		9,075
Total AFS	$	86,608	$	86,701	$	132,182	$	128,224	$	215,410	$	194,320	$	15,216	$	10,945	$	449,416	$	420,190

Municipal taxable securities	$	500	$	501	$	—	$	—	$	—	$	—	$	—	$	—	$	500	$	501
Municipal tax-exempt securities		—		—		360		347		2,985		2,795		1,346		1,305		4,691		4,447
Total HTM	$	500	$	501	$	360	$	347	$	2,985	$	2,795	$	1,346	$	1,305	$	5,191	$	4,948

Gain (Loss) on Securities [Table Text Block]

	*Less than Twelve Months*							*Twelve Months or More*							*Total*
	*Fair Value*		*Unrealized Losses*			*# of Issuances*		*Fair Value*		*Unrealized Losses*			*# of Issuances*		*Fair Value*		*Unrealized Losses*			*# of Issuances*
June 30, 2025	*(dollars in thousands)*
Government agency securities	$	12,156	$	(61	)		3	$	2,798	$	(192	)		3	$	14,954	$	(253	)		6
SBA agency securities		7,357		(41	)		2		1,694		(125	)		4		9,051		(166	)		6
Mortgage-backed securities: residential		12,540		(190	)		2		28,843		(5,185	)		15		41,383		(5,375	)		17
Collateralized mortgage obligations: residential		5,567		(95	)		2		53,450		(10,076	)		23		59,017		(10,171	)		25
Collateralized mortgage obligations: commercial		22,168		(195	)		3		32,057		(2,201	)		19		54,225		(2,396	)		22
Commercial paper		39,783		(5	)		3		—		—			—		39,783		(5	)		3
Corporate debt securities		—		—			—		23,897		(2,545	)		28		23,897		(2,545	)		28
Municipal tax-exempt securities		—		—			—		8,809		(3,776	)		11		8,809		(3,776	)		11
Total AFS	$	99,571	$	(587	)		15	$	151,548	$	(24,100	)		103	$	251,119	$	(24,687	)		118

Municipal tax-exempt securities	$	—	$	—			—	$	3,995	$	(191	)		9	$	3,995	$	(191	)		9
Total HTM	$	—	$	—			—	$	3,995	$	(191	)		9	$	3,995	$	(191	)		9

	*Less than Twelve Months*							*Twelve Months or More*							*Total*
	*Fair Value*		*Unrealized Losses*			*# of Issuances*		*Fair Value*		*Unrealized Losses*			*# of Issuances*		*Fair Value*		*Unrealized Losses*			*# of Issuances*
December 31, 2024	*(dollars in thousands)*
Government agency securities	$	14,620	$	(219	)		3	$	6,422	$	(331	)		4	$	21,042	$	(550	)		7
SBA agency securities		24,971		(273	)		7		1,793		(194	)		4		26,764		(467	)		11
Mortgage-backed securities: residential		25,479		(578	)		5		30,198		(6,096	)		15		55,677		(6,674	)		20
Collateralized mortgage obligations: residential		36,166		(649	)		8		55,255		(11,989	)		24		91,421		(12,638	)		32
Collateralized mortgage obligations: commercial		35,753		(367	)		7		30,114		(2,436	)		18		65,867		(2,803	)		25
Commercial paper		48,874		(3	)		3		—		—			—		48,874		(3	)		3
Corporate debt securities		—		—			—		26,035		(2,961	)		30		26,035		(2,961	)		30
Municipal tax-exempt securities		—		—			—		9,075		(3,527	)		11		9,075		(3,527	)		11
Total AFS	$	185,863	$	(2,089	)		33	$	158,892	$	(27,534	)		106	$	344,755	$	(29,623	)		139

Municipal tax-exempt securities	$	—	$	—			—	$	4,447	$	(244	)		10	$	4,447	$	(244	)		10
Total HTM	$	—	$	—			—	$	4,447	$	(244	)		10	$	4,447	$	(244	)		10

RBB Bancorp 10-Q