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.

374Water Inc.

CIK 0000933972SCWO· quarter ending 2026-06-30

Shares outstanding

17,718,161

as of 2026-08-10 · 10-Q cover page, filed 2026-08-14

Held by 13F filers

1,783,916

10.1% of shares outstanding

Holders

-3 vs 2026-03-31 · 6 new, 9 exited

Value

$3.4M

shares +2.4% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-14, as of 2026-08-10)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	SCWO · NASDAQ	17,718,161	1,783,916	10.1%	44	88583P203

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
	88583P203	COM	44	1,783,916	17,718,161	10.1%	$3.4M	—	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. 2 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (44 of 44 · 88583P203)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	VANGUARD CAPITAL MANAGEMENT LLC	322,788	1.82%	$613K	—
2	CAPTRUST FINANCIAL ADVISORS	206,738	1.17%	$393K	—
3	HAMILTON LANE ADVISORS LLC	160,228	0.90%	$304K	—
4	D.A. DAVIDSON & CO.	148,179	0.84%	$282K	+12,697 (+9.4%)
5	BlackRock, Inc.	119,519	0.67%	$227K	+40,227 (+50.7%)
6	Icon Wealth Advisors, LLC	108,361	0.61%	$206K	—
7	GEODE CAPITAL MANAGEMENT, LLC	107,761	0.61%	$205K	-11,593 (-9.7%)
8	VANGUARD FIDUCIARY TRUST CO	70,104	0.40%	$133K	+21,646 (+44.7%)
9	RAYMOND JAMES FINANCIAL INC	58,428	0.33%	$111K	+19,405 (+49.7%)
10	Sigma Planning Corp	55,553	0.31%	$106K	+3,200 (+6.1%)
11	OSAIC HOLDINGS, INC.	50,353	0.28%	$96K	-13,000 (-20.5%)
12	MILLENNIUM MANAGEMENT LLC	48,459	0.27%	$92K	-15,216 (-23.9%)
13	SENTINEL TRUST CO LBA	40,130	0.23%	$76K	—
14	UBS Group AG	38,084	0.21%	$72K	+4,240 (+12.5%)
15	NORTHERN TRUST CORP	25,922	0.15%	$49K	-2,263 (-8.0%)
16	STATE STREET CORP	23,176	0.13%	$44K	—
17	Trinity Legacy Partners, LLC	23,162	0.13%	$51K	—
18	SUSQUEHANNA INTERNATIONAL GROUP, LLP	22,956	0.13%	$44K	-14,072 (-38.0%)
19	Mariner, LLC	19,075	0.11%	$36K	+1,000 (+5.5%)
20	Uncommon Cents Investing LLC	18,200	0.10%	$35K	—
21	Prospera Financial Services Inc	17,500	0.10%	$33K	—
22	CITADEL ADVISORS LLC	14,726	0.08%	$28K	NEW
23	Qube Research & Technologies Ltd	14,276	0.08%	$27K	NEW
24	TWO SIGMA INVESTMENTS, LP	13,627	0.08%	$26K	—
25	Westend Capital Management, LLC	13,000	0.07%	$25K	—
26	XTX Topco Ltd	12,983	0.07%	$25K	NEW
27	Compass Ion Advisors, LLC	10,164	0.06%	$19K	—
28	MORGAN STANLEY	6,085	0.03%	$12K	—
29	Avalon Trust Co	4,300	0.02%	$8K	—
30	ROYAL BANK OF CANADA	3,907	0.02%	$7K	+2,231 (+133.1%)
31	Vanguard Global Advisers, LLC	1,970	0.01%	$4K	—
32	FIFTH THIRD BANCORP	1,300	0.01%	$2K	—
33	Tower Research Capital LLC (TRC)	1,229	0.01%	$2K	-74 (-5.7%)
34	Graney & King, LLC	750	0.00%	$1K	—
35	Smartleaf Asset Management LLC	345	0.00%	$649	—
36	BARCLAYS PLC	142	0.00%	$270	NEW
37	WELLS FARGO & COMPANY/MN	125	0.00%	$238	NEW
38	Clearstead Advisors, LLC	100	0.00%	$190	—
39	JPMORGAN CHASE & CO	58	0.00%	$109	—
40	Blue Trust, Inc.	50	0.00%	$95	—
41	FIRST COMMUNITY TRUST NA	50	0.00%	$95	—
42	JONES FINANCIAL COMPANIES LLLP	40	0.00%	$77	—
43	Rockefeller Capital Management L.P.	10	0.00%	$19	—
44	Caitong International Asset Management Co., Ltd	3	0.00%	$6	NEW

Exited since 2026-03-31 (9 filers; largest 9 shown)

PATRON PARTNERS, LLC	−15,000
TFO Wealth Partners, LLC	−11,859
NATIONAL BANK OF CANADA /FI/	−10,750
MATRIX ASSET ADVISORS INC/NY	−10,000
Wealth Preservation Advisors, LLC	−250
QUADRANT CAPITAL GROUP LLC	−210
First Pacific Financial	−30
Optiver Holding B.V.	−2
CITIGROUP INC	−1

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
Yaacov Nagar	SCHEDULE 13D/A	2026-04-30	2026-04-30	1,771,263	10.16%
Bryce Allan Johnson	SCHEDULE 13D/A	2026-03-12	2026-01-22	410,086	2.4%
Christopher L. Tucker	SCHEDULE 13D/A	2026-03-12	2026-01-22	17,964	0.1%
John McClure	SCHEDULE 13D/A	2026-03-12	2026-01-22	41,000	0.2%
Kevin J. Lockwood	SCHEDULE 13D/A	2026-03-12	2026-01-22	101,000	0.6%
Ligi Investments LLLP	SCHEDULE 13D/A	2026-03-12	2026-01-22	48,000	0.3%
Richard H. Davis	SCHEDULE 13D/A	2026-03-12	2026-01-22	407,432	2.4%
Robert F. Ehrman Declaration of Trust as Amended and Restated on 10/6/2022	SCHEDULE 13D/A	2026-03-12	2026-01-22	70,867	0.4%
Stephen H. McKnight	SCHEDULE 13D/A	2026-03-12	2026-01-22	203,500	1.2%
Stephen H. McKnight Jr.	SCHEDULE 13D/A	2026-03-12	2026-01-22	86,043	0.5%
William R. Greenfield	SCHEDULE 13D/A	2026-03-12	2026-01-22	43,834	0.3%
Nagar Yaacov	SCHEDULE 13D	2025-12-12	2025-12-10	32,112,632	19%

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.