As of the latest Form 4 filed Mar 9, 2026.
What Fuel Tech Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 14 most recent filings for FTEK.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-03-09 | 2026-03-06 | ARNONE VINCENT J President & CEO | PPurchase | +10.0K | $1.24 | $12.4K | No | Form 4 ↗ |
| 2025-06-06 | 2025-06-04 | Jones Sharon L Director | SSale | −12.6K | $1.67 | $21.0K | No | Form 4 ↗ |
| 2025-04-01 | 2025-03-28 | ARNONE VINCENT J President & CEO | PPurchase | +15.0K | $1.05 | $15.8K | No | Form 4 ↗ |
| 2024-11-20 | 2024-11-19 | Jones Sharon L Director | PPurchase | +8.01K | $1.08 | $8.66K | No | Form 4 ↗ |
| 2024-11-19 | 2024-11-18 | Jones Sharon L Director | PPurchase | +9.80K | $1.05 | $10.3K | No | Form 4 ↗ |
| 2024-11-19 | 2024-11-15 | Jones Sharon L, Director | PPurchase | +4.20K | $1.05 | $4.41K | No | Form 4 ↗ |
| 2024-11-18 | 2024-11-14 | Jones Sharon L Director | PPurchase | +7.20K | $1.04 | $7.49K | No | Form 4 ↗ |
| 2024-11-18 | 2024-11-13 | Jones Sharon L, Director | PPurchase | +9.10K | $1.05 | $9.55K | No | Form 4 ↗ |
| 2024-11-18 | 2024-11-12 | Jones Sharon L, Director | PPurchase | +9.50K | $1.02 | $9.69K | No | Form 4 ↗ |
| 2024-09-16 | 2024-09-12 | Albrecht Ellen T Chief Financial Officer | PPurchase | +5.00K | $1.01 | $5.05K | No | Form 4 ↗ |
| 2024-09-16 | 2024-09-12 | ARNONE VINCENT J President & CEO | PPurchase | +20.0K | $1.02 | $20.4K | No | Form 4 ↗ |
| 2024-08-30 | 2024-08-28 | Jones Sharon L Director | PPurchase | +3.29K | $1.01 | $3.31K | No | Form 4 ↗ |
| 2024-08-21 | 2024-08-12 | Jones Sharon L Director | PPurchase | +447.17 | $1.01 | $449.40 | No | Form 4 ↗ |
| 2024-08-12 | 2024-08-09 | ARNONE VINCENT J President & CEO | PPurchase | +20.0K | $1.04 | $20.9K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also FTEK’s full analysis or the market-wide insider trading feed. The tabs above jump to FTEK’s other SEC data.
Source: SEC Form 4 filings for FTEK, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.