About 0.6% overall. As a group they ended with more shares than they started with.
Percentages cover 7 of 15 officers and directors. 8 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: John Boynton IV (holdings couldn't be fully reconciled); Ophir Nave, Marc Boroditsky, Elena Bunina, Andrey Korolenko and Danila Shtan (most of their shares vested during the period, so a percentage would mislead); Maria del Dado Alonso Sanchez and Yael Almog (held no vested shares at the start).
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| Andrey Korolenko Chief Infrastructure Officer | $123M 621K shares | iNo percentage: most of their shares vested during the period, so a percentage would mislead. | 86% under a disclosed plan |
| Ophir Nave COO, Director | $118M 500K shares | iNo percentage: most of their shares vested during the period, so a percentage would mislead. | Disclosed plan |
| Arkadiy Volozh CEO, Director | $23.3M 118K shares | 0.4% | No plan disclosed |
| Charles Ryan Director | $13.3M 50K shares | 16% | Disclosed plan |
| Danila Shtan Chief Technology Officer | $12.5M 61K shares | iNo percentage: most of their shares vested during the period, so a percentage would mislead. | 30% under a disclosed plan |
| Marc Boroditsky Chief Revenue Officer | $11.7M 54K shares | iNo percentage: most of their shares vested during the period, so a percentage would mislead. | 75% under a disclosed plan |
| Elena Bunina Director | $8.3M 48K shares | iNo percentage: most of their shares vested during the period, so a percentage would mislead. | Disclosed plan |
| John Boynton IV Director | $5.6M 24K shares | iNo percentage: holdings couldn't be fully reconciled. | Disclosed plan |
| Boaz Tal General Counsel | $1.3M 8.1K shares | 80% | 77% under a disclosed plan |
| Maria del Dado Alonso Sanchez CFO | $509K 2K shares | iNo percentage: held no vested shares at the start. | No plan disclosed |
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 7, 2025 | Sold | Held Oct 7, 2026 | Still held | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Arkadiy VolozhiIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. CEO, Director | 28.73M | −118K | 29.44M | +2.5% | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Arkadiy Volozh0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
John Boynton IV!Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +45,000 shares on Jun 15, 2026 (Direct). See the filing Sales and other transactions for John Boynton IV are complete. Director | n/a | −24K | n/a | n/a | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for John Boynton IV0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Holdings couldn't be fully reconciled. Balance changed with no matching transaction and no footnote: +45,000 shares on Jun 15, 2026 (Direct). The balances below are as reported, not verified totals. | ||||||||||||||||||||
Ophir NaveiIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. COO, Director | 417K | −500K | 455K | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Ophir Nave0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Stock options (not counted as shares):
Estimate: options held × ($243.50 − strike price), using the most recent insider trade price on Form 4 (Oct 5, 2026), not a market close. | ||||||||||||||||||||
Charles RyaniIncludes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3. Director | 323K | −50K | 274K | 85% | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Charles Ryan0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Roman CherniniStarted reporting during the period; starting holdings are from the Form 3. Chief Business Officer | 313K | 0 | 313K | no sales | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Roman Chernin0shares vested or exercised 0gifted (net of own trusts) 688K → 688Kunvested awards, start → end
Stock options (not counted as shares):
Estimate: options held × ($243.50 − strike price), using the most recent insider trade price on Form 4 (Oct 5, 2026), not a market close. | ||||||||||||||||||||
Marc BoroditskyiIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. Chief Revenue Officer | 22K | −54K | 0 | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Marc Boroditsky+7Kshares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Stock options (not counted as shares):
Estimate: options held × ($243.50 − strike price), using the most recent insider trade price on Form 4 (Oct 5, 2026), not a market close. | ||||||||||||||||||||
Kira RadinskyiIncludes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3. Director | 15K | 0 | 17K | no sales | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Kira Radinsky0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Boaz TaliIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. General Counsel | 10K | −8.1K | 81K | +696% | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Boaz Tal0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Elena BuninaiIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. Director | 5K | −48K | 12K | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Elena Bunina0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Stock options (not counted as shares):
Estimate: options held × ($243.50 − strike price), using the most recent insider trade price on Form 4 (Oct 5, 2026), not a market close. | ||||||||||||||||||||
Arne GrimmeiIncludes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3. Director | 4.5K | 0 | 5.9K | no sales | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Arne Grimme0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Matthew WeigandiMinor difference of 9,102 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer). Includes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3. Director | 4.5K | 0 | 15K | no sales | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Matthew Weigand0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Reconciliation: minor difference of 9,102 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer). | ||||||||||||||||||||
Andrey KorolenkoiIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. Chief Infrastructure Officer | 1.9K | −621K | 522K | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Andrey Korolenko+500Kshares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
Stock options (not counted as shares):
Estimate: options held × ($243.50 − strike price), using the most recent insider trade price on Form 4 (Oct 5, 2026), not a market close. | ||||||||||||||||||||
Danila ShtaniIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. Chief Technology Officer | 34 | −61K | 260K | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Danila Shtan0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Maria del Dado Alonso SancheziIncludes unvested RSUs, amount not disclosed. Unvested RSUs stated in footnotes are excluded from owned shares. Started reporting during the period; starting holdings are from the Form 3. CFO | 0 | −2K | 12K | not meaningful | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Maria del Dado Alonso SanchezName on SEC filings: Sanchez Alonso (Alonso Sanchez Maria del Dado). 0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
Yael AlmogiIncludes unvested RSUs, amount not disclosed. Started reporting during the period; starting holdings are from the Form 3. General Counsel | 0 | 0 | 7.8K | no sales | ||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Yael Almog0shares vested or exercised 0gifted (net of own trusts) none reportedunvested awards, start → end
| ||||||||||||||||||||
14 of 15 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (13 exactly, 1 with a minor or footnoted difference). For 1 we show sales but not holdings; the ! icon on that row explains why. Percentages cover 7 of 15 officers and directors. Left out: John Boynton IV (holdings couldn't be fully reconciled); Ophir Nave, Marc Boroditsky, Elena Bunina, Andrey Korolenko and Danila Shtan (most of their shares vested during the period, so a percentage would mislead); Maria del Dado Alonso Sanchez and Yael Almog (held no vested shares at the start). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.
Officer and director open-market sales: $317M across 1,485,619 shares. Plan status and stated purpose are separate questions, and a sale can have both.
The lighter segment is sales with no plan disclosed in the filing ($53.2M), including tax-related sales outside a plan.
$53.2M of sales (16.8%) cite tax obligations in their footnotes. Example: Danila Shtan, Oct 1, 2026
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| Andrey Korolenko Chief Infrastructure Officer | 621K | $123M | 86% | 39% | Mar 31, 2026 to Oct 1, 2026 |
| Ophir Nave COO, Director | 500K | $118M | 100% | 37% | Oct 5, 2026 to Oct 5, 2026 |
| Arkadiy Volozh CEO, Director | 118K | $23.3M | 0% | 7% | Apr 1, 2026 to Oct 1, 2026 |
| Charles Ryan Director | 50K | $13.3M | 100% | 4% | Aug 14, 2026 to Aug 14, 2026 |
| Danila Shtan Chief Technology Officer | 61K | $12.5M | 30% | 4% | Mar 31, 2026 to Oct 1, 2026 |
| Marc Boroditsky Chief Revenue Officer | 54K | $11.7M | 75% | 4% | Apr 15, 2026 to Sep 14, 2026 |
| Elena Bunina Director | 48K | $8.3M | 100% | 3% | Apr 10, 2026 to May 13, 2026 |
| John Boynton IV Director | 24K | $5.6M | 100% | 2% | Jun 15, 2026 to Sep 29, 2026 |
| Boaz Tal General Counsel | 8.1K | $1.3M | 77% | 0.4% | Mar 31, 2026 to May 20, 2026 |
| Maria del Dado Alonso Sanchez CFO | 2K | $509K | 0% | 0.2% | Jun 2, 2026 to Sep 1, 2026 |
| Month | Sale proceeds |
|---|---|
| Oct 2025 | $0 |
| Nov 2025 | $0 |
| Dec 2025 | $0 |
| Jan 2026 | $0 |
| Feb 2026 | $0 |
| Mar 2026 | $4.3M |
| Apr 2026 | $10.7M |
| May 2026 | $109M |
| Jun 2026 | $9.7M |
| Jul 2026 | $28.7M |
| Aug 2026 | $14.7M |
| Sep 2026 | $2.9M |
| Oct 2026 | $137M |
Not enough history to compare: fewer than three earlier years of filings.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 7, 2026 Latest 12 months · filings don't cover the whole year | 1.49M | 10 | $317M |
| Oct 7, 2025 1 year earlier · filings don't cover the whole year | n/a | n/a | n/a |
| Oct 7, 2024 2 years earlier · filings don't cover the whole year | n/a | n/a | n/a |
| Oct 8, 2023 3 years earlier · filings don't cover the whole year | n/a | n/a | n/a |
| Oct 8, 2022 4 years earlier · filings don't cover the whole year | n/a | n/a | n/a |
| Oct 8, 2021 5 years earlier · filings don't cover the whole year | n/a | n/a | n/a |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
John Boynton IV: holdings couldn't be fully reconciled (difference of 45,000 shares). Balance changed with no matching transaction and no footnote: +45,000 shares on Jun 15, 2026 (Direct). Filing, Jun 15, 2026
Matthew Weigand: minor difference of 9,102 shares. Difference is stated in footnotes (unreported vesting, exempt acquisition or transfer).
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 58 Forms 3, 4 and 5 filed for Nebius Group N.V. (SEC CIK 1513845) from Mar 18, 2026 to Oct 6, 2026, retrieved from SEC EDGAR on Oct 7, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".