Insider trades › Valentin Gapontsev Trust I
Valentin Gapontsev Trust I
A corporate insider: an officer, director or owner of more than 10% of a company. Insiders report their trades to the SEC on Form 4The form insiders use to report each purchase or sale of their company's stock. It is due within two business days of the trade. · Last filing Nov 4, 2026
Ask your AI about this
Connect Claude, ChatGPT, Gemini or Grok (Microsoft 365 Copilot coming soon) to 13F.ai and ask in plain English. Copy a question to get started:
Using 13F.ai, list Valentin Gapontsev Trust I's open-market buys and sells across companies in the last two years, with the Form 4 links.
Using 13F.ai, how did the stocks Valentin Gapontsev Trust I bought perform after the purchase compared with the S&P 500?
Using 13F.ai, are other insiders at the same companies buying or selling at the same time as Valentin Gapontsev Trust I?
Connect your AI · Plans and the 7-day free trial (card required)
Buying and selling by quarter
Dollars bought and sold on the open market over the last two years.
Bought Sold
By trade date, using the shares and price reported for each trade. Stock grants, option exercises and shares withheld for tax are left out.
Roles
The companies where this person reports as an insider, and their position at each, most recent first.
| Company | Role | Last filed |
|---|---|---|
| IPGP IPG Photonics Corporation | 10% owner | Nov 4, 2026 |
Roles come from the filings themselves and can change over time.
Latest open-market trades
Purchases and sales at every company, most recent filing first.
| How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss. | Filing | ||||||
|---|---|---|---|---|---|---|---|
| Nov 3, 2026 | IPGP IPG Photonics Corporation | Sale | 14,632 | $75.18 | $1.1M | -8.9% | Form 4 ↗ |
| Nov 2, 2026 | IPGP IPG Photonics Corporation | Sale | 6,020 | $75.18 | $452.6K | -7.3% | Form 4 ↗ |
| Sep 2, 2026 | IPGP IPG Photonics Corporation | Sale | 4,591 | $75.65 | $347.3K | -10.0% | Form 4 ↗ |
| Sep 2, 2026 | IPGP IPG Photonics Corporation | Sale | 4,715 | $76.25 | $359.5K | -10.0% | Form 4 ↗ |
| Sep 1, 2026 | IPGP IPG Photonics Corporation | Sale | 18,091 | $75.14 | $1.4M | -8.9% | Form 4 ↗ |
| Jul 21, 2026 | IPGP IPG Photonics Corporation | Sale | 7,100 | $101.20 | $718.5K | -34.9% | Form 4 ↗ |
| Jul 21, 2026 | IPGP IPG Photonics Corporation | Sale | 23,869 | $103.00 | $2.5M | -34.9% | Form 4 ↗ |
| Jul 21, 2026 | IPGP IPG Photonics Corporation | Sale | 1,000 | $100.08 | $100.1K | -34.9% | Form 4 ↗ |
| Jul 21, 2026 | IPGP IPG Photonics Corporation | Sale | 24,347 | $102.04 | $2.5M | -34.9% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 125 | $134.12 | $16.8K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 1,381 | $135.93 | $187.7K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 1,393 | $136.89 | $190.7K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 790 | $137.79 | $108.9K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 760 | $138.82 | $105.5K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 100 | $140.58 | $14.1K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 376 | $141.97 | $53.4K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 137 | $143.71 | $19.7K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 480 | $144.29 | $69.3K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 410 | $146.21 | $59.9K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 220 | $148.00 | $32.6K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 390 | $149.88 | $58.5K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 15,882 | $132.40 | $2.1M | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 6,590 | $125.40 | $826.4K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 6,820 | $126.33 | $861.6K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 4,354 | $127.42 | $554.8K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 5,012 | $128.33 | $643.2K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 3,931 | $129.56 | $509.3K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 4,931 | $130.57 | $643.8K | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 8,383 | $131.67 | $1.1M | -60.2% | Form 4 ↗ |
| Feb 17, 2026 | IPGP IPG Photonics Corporation | Sale | 4,035 | $133.42 | $538.3K | -60.2% | Form 4 ↗ |
| Jan 15, 2026 | IPGP IPG Photonics Corporation | Sale | 571 | $79.38 | $45.3K | -24.3% | Form 4 ↗ |
| Jan 15, 2026 | IPGP IPG Photonics Corporation | Sale | 7,381 | $80.16 | $591.7K | -24.3% | Form 4 ↗ |
| Jan 14, 2026 | IPGP IPG Photonics Corporation | Sale | 13,159 | $77.63 | $1.0M | -21.9% | Form 4 ↗ |
| Jan 14, 2026 | IPGP IPG Photonics Corporation | Sale | 700 | $78.55 | $55.0K | -21.9% | Form 4 ↗ |
| Jan 14, 2026 | IPGP IPG Photonics Corporation | Sale | 3,667 | $77.19 | $283.1K | -21.9% | Form 4 ↗ |
| Jan 13, 2026 | IPGP IPG Photonics Corporation | Sale | 16,752 | $76.71 | $1.3M | -20.4% | Form 4 ↗ |
| Jan 13, 2026 | IPGP IPG Photonics Corporation | Sale | 6,277 | $77.70 | $487.7K | -20.4% | Form 4 ↗ |
| Jan 12, 2026 | IPGP IPG Photonics Corporation | Sale | 16,065 | $76.20 | $1.2M | -19.5% | Form 4 ↗ |
| Jan 12, 2026 | IPGP IPG Photonics Corporation | Sale | 1,928 | $76.69 | $147.9K | -19.5% | Form 4 ↗ |
| Dec 16, 2025 | IPGP IPG Photonics Corporation | Sale | 13,544 | $76.59 | $1.0M | -23.1% | Form 4 ↗ |
| Dec 16, 2025 | IPGP IPG Photonics Corporation | Sale | 12,160 | $77.44 | $941.7K | -23.1% | Form 4 ↗ |
| Dec 16, 2025 | IPGP IPG Photonics Corporation | Sale | 1,412 | $78.22 | $110.4K | -23.1% | Form 4 ↗ |
| Dec 15, 2025 | IPGP IPG Photonics Corporation | Sale | 39,384 | $77.63 | $3.1M | -23.7% | Form 4 ↗ |
| Nov 18, 2025 | IPGP IPG Photonics Corporation | Sale | 20,775 | $76.45 | $1.6M | -24.9% | Form 4 ↗ |
| Nov 18, 2025 | IPGP IPG Photonics Corporation | Sale | 27,126 | $75.88 | $2.1M | -24.9% | Form 4 ↗ |
| Nov 17, 2025 | IPGP IPG Photonics Corporation | Sale | 3,815 | $79.33 | $302.6K | -24.7% | Form 4 ↗ |
| Nov 17, 2025 | IPGP IPG Photonics Corporation | Sale | 9,932 | $76.63 | $761.1K | -24.7% | Form 4 ↗ |
| Nov 17, 2025 | IPGP IPG Photonics Corporation | Sale | 4,852 | $78.50 | $380.9K | -24.7% | Form 4 ↗ |
| Oct 15, 2025 | IPGP IPG Photonics Corporation | Sale | 5,315 | $84.24 | $447.7K | -34.8% | Form 4 ↗ |
| Oct 15, 2025 | IPGP IPG Photonics Corporation | Sale | 5,166 | $84.73 | $437.7K | -34.8% | Form 4 ↗ |
| Oct 15, 2025 | IPGP IPG Photonics Corporation | Sale | 7,226 | $85.97 | $621.2K | -34.8% | Form 4 ↗ |
| Oct 14, 2025 | IPGP IPG Photonics Corporation | Sale | 1,661 | $80.96 | $134.5K | -32.4% | Form 4 ↗ |
| Oct 14, 2025 | IPGP IPG Photonics Corporation | Sale | 3,002 | $82.19 | $246.7K | -32.4% | Form 4 ↗ |
| Oct 14, 2025 | IPGP IPG Photonics Corporation | Sale | 8,430 | $83.22 | $701.5K | -32.4% | Form 4 ↗ |
| Oct 14, 2025 | IPGP IPG Photonics Corporation | Sale | 3,436 | $84.00 | $288.6K | -32.4% | Form 4 ↗ |
| Oct 13, 2025 | IPGP IPG Photonics Corporation | Sale | 1,667 | $82.09 | $136.8K | -32.3% | Form 4 ↗ |
| Oct 13, 2025 | IPGP IPG Photonics Corporation | Sale | 29,547 | $83.23 | $2.5M | -32.3% | Form 4 ↗ |
| Oct 13, 2025 | IPGP IPG Photonics Corporation | Sale | 1,050 | $83.86 | $88.1K | -32.3% | Form 4 ↗ |
| Sep 16, 2025 | IPGP IPG Photonics Corporation | Sale | 14,180 | $80.67 | $1.1M | -31.4% | Form 4 ↗ |
| Sep 15, 2025 | IPGP IPG Photonics Corporation | Sale | 37,894 | $80.54 | $3.1M | -29.8% | Form 4 ↗ |
| Sep 15, 2025 | IPGP IPG Photonics Corporation | Sale | 14,426 | $81.15 | $1.2M | -29.8% | Form 4 ↗ |
| Mar 6, 2025 | IPGP IPG Photonics Corporation | Sale | 5,597 | $63.33 | $354.5K | -23.4% | Form 4 ↗ |
| Mar 6, 2025 | IPGP IPG Photonics Corporation | Sale | 69,403 | $62.56 | $4.3M | -23.4% | Form 4 ↗ |
Each row links to its Form 4. Since trade compares the stock’s move from the close on the trade date (or the next trading day) to its latest close with the S&P 500 over the same days, adjusted for splits and excluding dividends. It describes the stock, not what the trader made: we don’t know their purchase price, position size or later sales. A dash means the trade isn’t matched to a listed stock, or there is no closing price after it yet.
When several people report on the same filing, we list it under the first one named, so trades by someone usually listed second may be missing here. Information, not investment advice: see the disclaimer.