Insider · CIK 0001508155
Valentin Gapontsev Trust I
Files at IPGP (IPG PHOTONICS CORP). First filing Oct 11, 2023, latest Sep 3, 2026.
In brief
Valentin Gapontsev Trust I files SEC Form 4 as 10% owner at IPGP (IPG PHOTONICS CORP). Since Oct 11, 2023, Valentin Gapontsev Trust I has reported 0 open-market buys worth $0 and 15 open-market sells worth $51M, the latest filed on Sep 3, 2026.
A track record needs three past buys with six months of prices behind them; Valentin Gapontsev Trust I has 0, so none is measured yet.
The newest scored trade: sold $2.1M of IPGP on Sep 1, 2026, filed Sep 3, 2026, scored 17 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 8 sells worth $37M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
IPGP: IPG PHOTONICS CORP
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 17Weak | IPG PHOTONICS CORP | $2.1M 27,397 shares | -0% | - | |
| 32Weak | IPG PHOTONICS CORP | $5.8M 56,316 shares | -1% | +44% from low-33% from high | |
| 32Weak | IPG PHOTONICS CORP | $8.7M 66,500 shares | -1% | +171% from low-12% from high | |
| 27Weak | IPG PHOTONICS CORP | $637k 7,952 shares | -0% | +61% from low-11% from high | |
| 32Weak | IPG PHOTONICS CORP | $4.5M 58,548 shares | -1% | +53% from low-15% from high | |
| 32Weak | IPG PHOTONICS CORP | $5.1M 66,500 shares | -1% | +57% from low-13% from high | |
| 32Weak | IPG PHOTONICS CORP | $5.1M 66,500 shares | -1% | +54% from low-15% from high | |
| 32Weak | IPG PHOTONICS CORP | $5.6M 66,500 shares | -1% | +68% from low-6% from high | |
| 32Weak | IPG PHOTONICS CORP | $5.4M 66,500 shares | -1% | +62% from low-6% from high | |
| 37Weak | IPGPsell IPG PHOTONICS CORP | $4.7M 75,000 shares | -1% | - | |
| 29Weak | IPG PHOTONICS CORP | $821k 8,250 shares | -0% | +19% from low-29% from high | |
| 29Weak | IPG PHOTONICS CORP | $787k 8,250 shares | -0% | +14% from low-32% from high | |
| 22Weak | IPG PHOTONICS CORP | $757k 8,250 shares | -0% | +10% from low-34% from high | |
| 22Weak | IPG PHOTONICS CORP | $757k 8,250 shares | -0% | +10% from low-34% from high | |
| 14Weak | IPG PHOTONICS CORP | $789k 8,250 shares | -0% | +15% from low-32% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Mar 25, 2024 | IPGP IPG PHOTONICS CORP | 19,000 0.04% of outstanding | $825k | Mar 25, 2024 | $6.4M |
| Dec 8, 2023 | IPGP IPG PHOTONICS CORP | 18,250 0.04% of outstanding | $1.8M | Dec 8, 2023 | $4.8M |
Transactions
The newest 50 of 72 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 1, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -18,091 | $75.14 | $1.4M | 6,652,192 | 41 d ago |
| Sep 2, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,591 | $75.65 | $347k | 6,647,601 | 41 d ago |
| Sep 2, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,715 | $76.25 | $360k | 6,642,886 | 41 d ago |
| Jul 21, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,000 | $100.08 | $100k | 6,725,599 | Jul 22, 2026 |
| Jul 21, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -7,100 | $101.20 | $719k | 6,718,499 | Jul 22, 2026 |
| Jul 21, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -24,347 | $102.04 | $2.5M | 6,694,152 | Jul 22, 2026 |
| Jul 21, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -23,869 | $103.00 | $2.5M | 6,670,283 | Jul 22, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -6,590 | $125.40 | $826k | 6,786,509 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -6,820 | $126.33 | $862k | 6,779,689 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,354 | $127.42 | $555k | 6,775,335 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -5,012 | $128.33 | $643k | 6,770,323 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -3,931 | $129.56 | $509k | 6,766,392 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,931 | $130.57 | $644k | 6,761,461 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -8,383 | $131.67 | $1.1M | 6,753,078 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -15,882 | $132.40 | $2.1M | 6,737,196 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,035 | $133.42 | $538k | 6,733,161 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -125 | $134.12 | $17k | 6,733,036 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,381 | $135.93 | $188k | 6,731,655 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,393 | $136.89 | $191k | 6,730,262 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -790 | $137.79 | $109k | 6,729,472 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -760 | $138.82 | $106k | 6,728,712 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -100 | $140.58 | $14k | 6,728,612 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -376 | $141.97 | $53k | 6,728,236 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -137 | $143.71 | $20k | 6,728,099 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -480 | $144.29 | $69k | 6,727,619 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -410 | $146.21 | $60k | 6,727,209 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -220 | $148.00 | $33k | 6,726,989 | Feb 18, 2026 |
| Feb 17, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -390 | $149.88 | $58k | 6,726,599 | Feb 18, 2026 |
| Jan 15, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -571 | $79.38 | $45k | 6,800,480 | Jan 16, 2026 |
| Jan 15, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -7,381 | $80.16 | $592k | 6,793,099 | Jan 16, 2026 |
| Jan 12, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -16,065 | $76.20 | $1.2M | 6,843,534 | Jan 14, 2026 |
| Jan 12, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,928 | $76.69 | $148k | 6,841,606 | Jan 14, 2026 |
| Jan 13, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -16,752 | $76.71 | $1.3M | 6,824,854 | Jan 14, 2026 |
| Jan 13, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -6,277 | $77.70 | $488k | 6,818,577 | Jan 14, 2026 |
| Jan 14, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -3,667 | $77.19 | $283k | 6,814,910 | Jan 14, 2026 |
| Jan 14, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -13,159 | $77.63 | $1.0M | 6,801,751 | Jan 14, 2026 |
| Jan 14, 2026 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -700 | $78.55 | $55k | 6,801,051 | Jan 14, 2026 |
| Dec 15, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -39,384 | $77.63 | $3.1M | 6,886,715 | Dec 16, 2025 |
| Dec 16, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -13,544 | $76.59 | $1.0M | 6,873,171 | Dec 16, 2025 |
| Dec 16, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -12,160 | $77.44 | $942k | 6,861,011 | Dec 16, 2025 |
| Dec 16, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,412 | $78.22 | $110k | 6,859,599 | Dec 16, 2025 |
| Nov 17, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -9,932 | $76.63 | $761k | 6,982,667 | Nov 19, 2025 |
| Nov 17, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -4,852 | $78.50 | $381k | 6,977,815 | Nov 19, 2025 |
| Nov 17, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -3,815 | $79.33 | $303k | 6,974,000 | Nov 19, 2025 |
| Nov 18, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -27,126 | $75.88 | $2.1M | 6,946,874 | Nov 19, 2025 |
| Nov 18, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -20,775 | $76.45 | $1.6M | 6,926,099 | Nov 19, 2025 |
| Oct 13, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,667 | $82.09 | $137k | 7,057,432 | Oct 15, 2025 |
| Oct 13, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -29,547 | $83.23 | $2.5M | 7,027,885 | Oct 15, 2025 |
| Oct 13, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,050 | $83.86 | $88k | 7,026,835 | Oct 15, 2025 |
| Oct 14, 2025 | IPGP IPG PHOTONICS CORP | SOpen-market sale Common Stock10b5-1 | -1,661 | $80.96 | $134k | 7,025,174 | Oct 15, 2025 |
Questions about Valentin Gapontsev Trust I
Answered from the filings on this page, as of the latest one.
Is Valentin Gapontsev Trust I buying or selling?
In the last 12 months Valentin Gapontsev Trust I reported 0 open-market buys worth $0 and 8 open-market sells worth $37M on SEC Form 4; the latest was sold $2.1M of IPGP on Sep 1, 2026. Grants, option exercises and tax withholding are not counted.
How did Valentin Gapontsev Trust I's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Valentin Gapontsev Trust I has 0.
Where does Valentin Gapontsev Trust I file Form 4?
Valentin Gapontsev Trust I has filed Form 4 at IPGP (IPG PHOTONICS CORP). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.