Aemetis, Inc.
Aemetis, Inc. (AMTX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AMTX · as of Sep 30, 2025
Ownership Breakdown
83
Institutional Holders
▲ 5 vs Q2
$24.02M
Total Inst. Value
▼ $530,525 vs Q2
70.37M
Shares Outstanding
freeFloat 92.64%
10.67M
13F Shares Held
▲ 771,979 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
AMTX 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 | 2.48M | 4.30% | 4.30% | $5.58B | Nov 7, 2025 | ▲ 329.8K |
GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC industrial organic chemicals | 1.01M | 1.75% | 1.75% | $2.28B | Nov 13, 2025 | ▼ 652.1K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP industrial organic chemicals | 775.4K | 1.34% | 1.34% | $1.74B | Nov 14, 2025 | ▲ 454.5K |
GEODE CAPITAL MANAGEMENT, LLC industrial organic chemicals | 660.2K | 1.14% | 1.14% | $1.49B | Nov 12, 2025 | ▲ 96.4K |
BLACKROCK, INC. industrial organic chemicals | 598.5K | 1.04% | 1.04% | $1.35B | Nov 12, 2025 | ▼ 6.8K |
MILLENNIUM MANAGEMENT LLC industrial organic chemicals | 529.9K | 91.88% | 91.88% | $1.19B | Nov 14, 2025 | ▼ 17.0K |
GOLDMAN SACHS GROUP INC industrial organic chemicals | 431.6K | 74.83% | 74.83% | $971.06M | Nov 14, 2025 | ▼ 112.5K |
RENAISSANCE TECHNOLOGIES LLC industrial organic chemicals | 363.0K | 62.94% | 62.94% | $816.75M | Nov 13, 2025 | NEW |
CITADEL ADVISORS LLC industrial organic chemicals | 334.1K | 57.92% | 57.92% | $751.70M | Nov 14, 2025 | ▲ 77.4K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP industrial organic chemicals | 262.9K | 45.58% | 45.58% | $591.52M | Nov 14, 2025 | ▲ 44.8K |
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
22
Increased
+1.45M shares5
New Positions
first time holders20
Decreased
−1.36M shares0
Sold Out
fully exitedNet shares change (top 50)
+88.7K
+1.45M / −1.36M
Net new holders
+7
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
AMTX 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
4
Sell transactions
0.00
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 |
|---|---|---|---|---|---|---|---|
Waltz Todd Executive Vice President, CFO | Mar 19, 2026 | Award | 200,000 | $2.64 | $528.0K | 1.31M | Form 4 ↗ |
Gupta Sanjeev Executive Vice President | Mar 19, 2026 | Award | 200,000 | $2.64 | $528.0K | 1.39M | Form 4 ↗ |
ROCKETT JAMES MICHAEL EVP, General Counsel | Mar 19, 2026 | Award | 200,000 | $2.64 | $528.0K | 700.0K | Form 4 ↗ |
BLOCK JOHN R director | Mar 19, 2026 | Award | 10,000 | $2.64 | $26.4K | 56.3K | Form 4 ↗ |
FOSTER ANDREW B Executive Vice President | Mar 19, 2026 | Award | 200,000 | $2.64 | $528.0K | 1.19M | Form 4 ↗ |
MCAFEE ERIC A Chief Executive Officer | Mar 19, 2026 | Award | 300,000 | $2.64 | $792.0K | 3.92M | Form 4 ↗ |
Simon Timothy Alan director | Jan 22, 2026 | Award | 12,000 | $1.54 | $18.5K | 52.6K | Form 4 ↗ |
BLOCK JOHN R director | Jan 22, 2026 | Award | 12,000 | $1.54 | $18.5K | 46.3K | Form 4 ↗ |
BARTON FRANCIS P director | Jan 22, 2026 | Award | 18,000 | $1.54 | $27.7K | 226.5K | Form 4 ↗ |
Beebe Lydia I director | Jan 22, 2026 | Award | 14,500 | $1.54 | $22.3K | 214.3K | 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
Aemetis, Inc. (AMTX) is primarily owned by institutional investors, who hold approximately 15.2% of total shares outstanding. Company insiders own approximately 7.36%, while retail and public investors account for the remaining 77.47%.
The largest institutional shareholder of Aemetis, Inc. is VANGUARD GROUP INC, holding approximately 2.48 million shares — equal to 4.30% of outstanding shares — as of September 30, 2025.
A total of 83 institutional investors currently hold AMTX stock, with a combined institutional value of approximately $24,023,765 as of the most recent 13F filing period.
Frequently asked questions
AMTX ownershipAemetis, Inc. (AMTX) is primarily owned by institutional investors, who hold approximately 15.2% of shares. The largest shareholder is VANGUARD GROUP INC with a 4.30% stake. Company insiders hold 7.36%. Data sourced from SEC Form 13F as of September 30, 2025.