374Water, Inc.
374Water, Inc. (SCWO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SCWO · as of Sep 30, 2025
Ownership Breakdown
61
Institutional Holders
▼ 12 vs Q2
$4.18M
Total Inst. Value
▼ $1.04M vs Q2
14.47M
Shares Outstanding
freeFloat 63.83%
14.49M
13F Shares Held
▼ 1.72M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SCWO largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC motors & generators | 3.28M | 2.26% | 2.26% | $941.61M | Nov 7, 2025 | ▲ 77.1K |
HAMILTON LANE ADVISORS LLC motors & generators | 1.62M | 1.12% | 1.12% | $464.86M | Oct 7, 2025 | — held |
ICON WEALTH ADVISORS, LLC motors & generators | 1.18M | 81.28% | 81.28% | $338.29M | Nov 14, 2025 | ▲ 7.5K |
MILLENNIUM MANAGEMENT LLC motors & generators | 1.08M | 74.72% | 74.72% | $311.00M | Nov 14, 2025 | ▼ 107.7K |
D.A. DAVIDSON & CO. motors & generators | 1.01M | 69.82% | 69.82% | $290.60M | Oct 22, 2025 | ▲ 276.3K |
GEODE CAPITAL MANAGEMENT, LLC motors & generators | 876.5K | 60.42% | 60.42% | $251.57M | Nov 12, 2025 | ▲ 18.7K |
BLACKROCK, INC. motors & generators | 792.8K | 54.65% | 54.65% | $227.46M | Nov 12, 2025 | ▼ 650.7K |
CAPTRUST FINANCIAL ADVISORS motors & generators | 726.9K | 50.11% | 50.11% | $208.54M | Nov 19, 2025 | ▼ 402 |
SENTINEL TRUST CO LBA motors & generators | 401.3K | 27.66% | 27.66% | $115.00M | Nov 4, 2025 | — held |
RAYMOND JAMES FINANCIAL INC motors & generators | 390.2K | 26.90% | 26.90% | $111.96M | Nov 14, 2025 | ▲ 7.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
17
Increased
+1.07M shares3
New Positions
first time holders11
Decreased
−1.49M shares0
Sold Out
fully exitedNet shares change (top 50)
419.8K
+1.07M / −1.49M
Net new holders
+9
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SCWO insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
1
Sell transactions
0.00
Buy/Sell ratio
$1M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Nagar Yaacov 10 percent owner | Apr 30, 2026 | Gift | 1,440,000 | $2.48 | $3.57M | 1.77M | Form 4 ↗ |
Russell Kline Chief Financial Officer | Dec 16, 2025 | Purchase | 20,000 | $0.22 | $4.4K | 668.6K | Form 4 ↗ |
Jones Stephen J Interim CEO | Dec 16, 2025 | Purchase | 450,000 | $0.23 | $104.0K | 1.06M | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 22, 2025 | Sale | 61,000 | $0.42 | $25.7K | 32.59M | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 23, 2025 | Sale | 473,211 | $0.43 | $205.4K | 32.11M | Form 4 ↗ |
Melkote Rajesh Ramaswamy Chief Technology Officer | Oct 9, 2025 | Award | 500,000 | $0.60 | $300.0K | 500.0K | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 20, 2025 | Sale | 13,330 | $0.42 | $5.6K | 32.96M | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 21, 2025 | Sale | 284,394 | $0.42 | $119.6K | 32.68M | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 22, 2025 | Sale | 32,791 | $0.42 | $13.8K | 32.65M | Form 4 ↗ |
Nagar Yaacov 10 percent owner | Oct 16, 2025 | Sale | 85,419 | $0.51 | $43.8K | 33.11M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
374Water, Inc. (SCWO) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 36.17%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of 374Water, Inc. is VANGUARD GROUP INC, holding approximately 3.28 million shares — equal to 2.26% of outstanding shares — as of September 30, 2025.
A total of 61 institutional investors currently hold SCWO stock, with a combined institutional value of approximately $4,179,368 as of the most recent 13F filing period.
Frequently asked questions
SCWO ownership374Water, Inc. (SCWO) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 2.26% stake. Company insiders hold 36.17%. Data sourced from SEC Form 13F as of September 30, 2025.