Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

ECB Bancorp, Inc. /MD/

CIK 0001914605ECBK· quarter ending 2026-06-30

Shares outstanding

8,737,702

as of 2026-08-06 · 10-Q cover page, filed 2026-08-07

Held by 13F filers

2,604,554

29.8% of shares outstanding

Holders

+1 vs 2026-03-31 · 7 new, 6 exited

Value

$49.8M

shares -1.9% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-07, as of 2026-08-06)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ECBK · NASDAQ	8,737,702	2,604,554	29.8%	60	26828M106

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	26828M106	COM	60	2,604,554	8,737,702	29.8%	$49.8M	—	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (60 of 60 · 26828M106)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	ALLIANCEBERNSTEIN L.P.	754,430	8.63%	$12.6M	-32,849 (-4.2%)
2	BlackRock, Inc.	418,386	4.79%	$8.4M	+23,740 (+6.0%)
3	VANGUARD CAPITAL MANAGEMENT LLC	337,942	3.87%	$6.8M	-45,980 (-12.0%)
4	GEODE CAPITAL MANAGEMENT, LLC	175,662	2.01%	$3.5M	+21,415 (+13.9%)
5	Sachetta, LLC	118,853	1.36%	$2.4M	—
6	RENAISSANCE TECHNOLOGIES LLC	83,800	0.96%	$1.7M	-4,066 (-4.6%)
7	STATE STREET CORP	77,792	0.89%	$1.6M	-1,800 (-2.3%)
8	Oppenheimer & Close, LLC	61,007	0.70%	$1.2M	—
9	NORTHERN TRUST CORP	57,212	0.65%	$1.1M	-6,191 (-9.8%)
10	MALTESE CAPITAL MANAGEMENT LLC	55,198	0.63%	$1.1M	—
11	Minerva Advisors LLC	49,940	0.57%	$1.0M	—
12	VANGUARD PORTFOLIO MANAGEMENT LLC	49,702	0.57%	$998K	+6,449 (+14.9%)
13	VANGUARD FIDUCIARY TRUST CO	48,957	0.56%	$983K	+509 (+1.1%)
14	MORGAN STANLEY	48,447	0.55%	$973K	+4,587 (+10.5%)
15	HighTower Advisors, LLC	43,005	0.49%	$864K	—
16	RAFFLES ASSOCIATES LP	26,510	0.30%	$532K	+13,111 (+97.9%)
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	22,256	0.25%	$447K	+1,981 (+9.8%)
18	STILWELL VALUE LLC	20,000	0.23%	$402K	—
19	GRIMES & Co WEALTH MANAGEMENT, LLC	20,000	0.23%	$402K	—
20	Bank of New York Mellon Corp	17,909	0.20%	$360K	+938 (+5.5%)
21	Nuveen, LLC	16,898	0.19%	$339K	NEW
22	AQR CAPITAL MANAGEMENT LLC	13,756	0.16%	$276K	NEW
23	Mariner, LLC	12,980	0.15%	$261K	+93 (+0.7%)
24	RHUMBLINE ADVISERS	10,154	0.12%	$204K	+370 (+3.8%)
25	CITADEL ADVISORS LLC	10,083	0.12%	$202K	NEW
26	DEUTSCHE BANK AG\	7,255	0.08%	$146K	+4,157 (+134.2%)
27	WELLS FARGO & COMPANY/MN	6,771	0.08%	$136K	+3,397 (+100.7%)
28	Russell Investments Group, Ltd.	5,666	0.06%	$114K	+4,089 (+259.3%)
29	Farther Finance Advisors, LLC	5,007	0.06%	$101K	+7 (+0.1%)
30	NEW YORK STATE COMMON RETIREMENT FUND	4,218	0.05%	$85K	—
31	CITIGROUP INC	3,469	0.04%	$70K	+2,963 (+585.6%)
32	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	3,428	0.04%	$69K	-198 (-5.5%)
33	JPMORGAN CHASE & CO	3,114	0.04%	$62K	+31 (+1.0%)
34	BNP PARIBAS FINANCIAL MARKETS	2,299	0.03%	$46K	+524 (+29.5%)
35	Vanguard Global Advisers, LLC	2,279	0.03%	$46K	—
36	UBS Group AG	1,861	0.02%	$37K	-7,591 (-80.3%)
37	Police & Firemen's Retirement System of New Jersey	1,843	0.02%	$37K	—
38	Tower Research Capital LLC (TRC)	1,588	0.02%	$32K	+515 (+48.0%)
39	BARCLAYS PLC	1,433	0.02%	$29K	-854 (-37.3%)
40	Ameritas Investment Partners, Inc.	786	0.01%	$16K	—
41	Legal & General Group Plc	695	0.01%	$14K	—
42	ROYAL BANK OF CANADA	466	0.01%	$9K	+340 (+269.8%)
43	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	369	0.00%	$7K	—
44	Arax Advisory Partners	272	0.00%	$5K	NEW
45	FMR LLC	221	0.00%	$4K	+66 (+42.6%)
46	Sterling Capital Management LLC	140	0.00%	$3K	-108 (-43.5%)
47	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	103	0.00%	$2K	-303 (-74.6%)
48	American Capital Advisory, LLC	100	0.00%	$2K	—
49	Covestor Ltd	49	0.00%	$1K	-7 (-12.5%)
50	TD PRIVATE CLIENT WEALTH LLC	37	0.00%	$743	—
51	PNC Financial Services Group, Inc.	36	0.00%	$723	+20 (+125.0%)
52	GAMMA Investing LLC	30	0.00%	$602	NEW
53	Cornerstone Planning Group LLC	29	0.00%	$576	—
54	Essential Partners LLC	28	0.00%	$562	-54 (-65.9%)
55	EverSource Wealth Advisors, LLC	23	0.00%	$461	+4 (+21.1%)
56	Allworth Financial LP	23	0.00%	$462	+20 (+666.7%)
57	NISA INVESTMENT ADVISORS, LLC	17	0.00%	$341	—
58	IFP Advisors, Inc	13	0.00%	$261	+2 (+18.2%)
59	True Wealth Design, LLC	4	0.00%	$81	NEW
60	ROTHSCHILD INVESTMENT LLC	3	0.00%	$60	NEW

Exited since 2026-03-31 (6 filers; largest 6 shown)

Covalent Partners LLC	−50,000
GOLDMAN SACHS GROUP INC	−31,079
CWM, LLC	−265
Advisory Services Network, LLC	−81
MAI Capital Management	−2
Root Financial Partners, LLC	−2

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
The Vanguard Group	SCHEDULE 13G/A	2026-03-26	2026-03-13	0	0%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.