Alto Ingredients, Inc.
Alto Ingredients, Inc. (ALTO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ALTO · as of Sep 30, 2025
Ownership Breakdown
68
Institutional Holders
▲ 3 vs Q2
$17.06M
Total Inst. Value
▼ $2.54M vs Q2
77.49M
Shares Outstanding
freeFloat 89.51%
15.79M
13F Shares Held
▼ 1.26M 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
ALTO largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC industrial organic chemicals | 3.49M | 4.70% | 4.70% | $3.77B | Nov 7, 2025 | ▼ 22.2K |
RENAISSANCE TECHNOLOGIES LLC industrial organic chemicals | 1.89M | 2.55% | 2.55% | $2.05B | Nov 13, 2025 | ▲ 452.9K |
PEAPOD LANE CAPITAL LLC industrial organic chemicals | 1.24M | 1.66% | 1.66% | $1.33B | Nov 10, 2025 | ▲ 13.3K |
BLACKROCK, INC. industrial organic chemicals | 1.20M | 1.62% | 1.62% | $1.30B | Nov 12, 2025 | ▼ 1.16M |
CREATIVE FINANCIAL DESIGNS INC /ADV industrial organic chemicals | 1.00M | 1.35% | 1.35% | $1.08B | Nov 12, 2025 | ▼ 17.0K |
GEODE CAPITAL MANAGEMENT, LLC industrial organic chemicals | 919.9K | 1.24% | 1.24% | $993.72M | Nov 12, 2025 | ▲ 10.9K |
DIMENSIONAL FUND ADVISORS LP industrial organic chemicals | 789.6K | 1.06% | 1.06% | $852.81M | Nov 12, 2025 | ▼ 109.4K |
GSA CAPITAL PARTNERS LLP industrial organic chemicals | 695.4K | 93.68% | 93.68% | $751.00M | Nov 7, 2025 | ▲ 6.8K |
D. E. SHAW & CO., INC. industrial organic chemicals | 649.7K | 87.52% | 87.52% | $701.65M | Nov 14, 2025 | ▼ 417.2K |
BRIDGEWAY CAPITAL MANAGEMENT, LLC industrial organic chemicals | 522.7K | 70.41% | 70.41% | $564.48M | Nov 14, 2025 | ▲ 35.6K |
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
18
Increased
+1.26M shares5
New Positions
first time holders17
Decreased
−1.97M shares0
Sold Out
fully exitedNet shares change (top 50)
713.0K
+1.26M / −1.97M
Net new holders
+6
5 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
ALTO insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
Buy transactions
5
Sell transactions
0.40
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Graham Auste M CLO & Secretary | May 14, 2026 | Gift | 20,000 | — | — | 233.2K | Form 4 ↗ |
NATHAN GILBERT E director | May 13, 2026 | Purchase | 5,000 | $4.45 | $22.3K | 774.7K | Form 4 ↗ |
NATHAN GILBERT E director | May 12, 2026 | Purchase | 20,000 | $4.61 | $92.2K | 769.7K | Form 4 ↗ |
Benton Todd E COO | Apr 1, 2026 | Tax Withhold | 25,359 | $4.79 | $121.5K | 184.1K | Form 4 ↗ |
Olander Robert R. Chief Financial Officer | Apr 1, 2026 | Tax Withhold | 41,072 | $4.79 | $196.7K | 253.1K | Form 4 ↗ |
Sneed James R Chief Commercial Officer | Apr 1, 2026 | Tax Withhold | 22,265 | $4.79 | $106.6K | 440.9K | Form 4 ↗ |
McGregor Bryon T President & CEO | Apr 1, 2026 | Tax Withhold | 73,062 | $4.79 | $350.0K | 957.9K | Form 4 ↗ |
Graham Auste M CLO & Secretary | Apr 1, 2026 | Tax Withhold | 32,902 | $4.79 | $157.6K | 253.2K | Form 4 ↗ |
Benton Todd E COO | Mar 17, 2026 | Award | 35,730 | — | — | 209.5K | Form 4 ↗ |
Sneed James R Chief Commercial Officer | Mar 17, 2026 | Award | 30,794 | — | — | 463.2K | 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
Alto Ingredients, Inc. (ALTO) is primarily owned by institutional investors, who hold approximately 20.4% of total shares outstanding. Company insiders own approximately 10.49%, while retail and public investors account for the remaining 69.14%.
The largest institutional shareholder of Alto Ingredients, Inc. is VANGUARD GROUP INC, holding approximately 3.49 million shares — equal to 4.70% of outstanding shares — as of September 30, 2025.
A total of 68 institutional investors currently hold ALTO stock, with a combined institutional value of approximately $17,058,175 as of the most recent 13F filing period.
Frequently asked questions
ALTO ownershipAlto Ingredients, Inc. (ALTO) is primarily owned by institutional investors, who hold approximately 20.4% of shares. The largest shareholder is VANGUARD GROUP INC with a 4.70% stake. Company insiders hold 10.49%. Data sourced from SEC Form 13F as of September 30, 2025.