Nebius Group NV (NBIS) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 19, 2026.
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- Filings shown
- 27
- Open-market buys
- 2
- Open-market sells
- 82
- Buys, 10b5-1 box not checked
- 0 of 2
Counts cover the 27 most recent Form 4 filings Tradune holds for NBIS (filed Jul 6 – Oct 19, 2026); the score below covers only the trailing 90 days (2 buys, 66 sells). No completed check of NBIS's Form 4 list on SEC EDGAR is on record yet; the latest NBIS filing Tradune holds was filed Oct 19, 2026. This is not guaranteed to be the complete record — see NBIS's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 23 filings Tradune holds for NBIS filed Jul 24 – Oct 19, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
68 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 46 sales· 554,560 sh
- checkbox disclosed
- On filings with the box not checked
- 3 sales· 81,414 sh
- not proof that no plan exists
- Not comparable
- 19 sales· 55,766 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| John Wilson Boynton IVDirector | 0 | 41 | — | 18,970 | −$4,075,195 |
| Ophir NaveCOO | 0 | 12 | — | 500,000 | −$117,765,468 |
| Charles E. RyanDirector | 0 | 6 | — | 50,000 | −$13,276,633 |
| Marc BoroditskyChief Revenue Officer | 0 | 5 | — | 40,886 | −$8,477,212 |
| Arne GrimmeDirector | 2 | 0 | 296 | — | +$50,317 |
| Arkadiy VolozhCEO | 0 | 1 | — | 37,778 | −$8,846,096 |
| Andrey KorolenkoChief Infrastructure Officer | 0 | 1 | — | 29,090 | −$6,811,714 |
| Danila ShtanChief Technology Officer | 0 | 1 | — | 14,546 | −$3,406,091 |
| Alonso Sanchez Maria del DadoCFO | 0 | 1 | — | 470 | −$92,120 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at NBIS
Insiders reported 2 open-market purchases of NBIS between Jul 6, 2026 and Oct 19, 2026, across 1 distinct buyer. The most recent purchase was reported by Arne Grimme (Director) on Oct 16, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 100 | $188.77 | 403,522 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 960 | $188.20 | 403,622 | −0.2% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $186.67 | 404,582 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $184.35 | 404,982 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $182.21 | 405,182 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $181.27 | 405,382 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 600 | $180.26 | 405,782 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $179.03 | 406,382 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $177.90 | 406,782 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 500 | $175.72 | 407,882 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $174.70 | 408,382 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $172.59 | 408,782 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $170.00 | 409,382 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $168.57 | 409,482 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 500 | $167.80 | 409,582 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 500 | $166.78 | 410,082 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $164.80 | 410,582 | −0.0% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $171.38 | 408,982 | −0.1% | Oct 15, 2026 |
| Open-market sale 10b5-1 box checked | 700 | $176.72 | 407,182 | −0.2% | Oct 15, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box checked | 148 | $169.99 | 6,181 | +2.5% | Oct 16, 2026 |
| Open-market purchase 10b5-1 box checked | 148 | $169.99 | 6,033 | +2.5% | Oct 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 7,000 | — | 7,000 | — | Oct 12, 2026 |
| Open-market sale 10b5-1 box checked | 7,000 | $211.23 | 0 | −100% | Oct 12, 2026 |
| Option exercise Stock Options | 7,000 | — | — | — | Oct 12, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 61,210 | $232.37 | 877,255 | −6.5% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 6,000 | $243.50 | 454,685 | −1.3% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 1,200 | $241.02 | 460,685 | −0.3% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 14,853 | $240.00 | 461,885 | −3.1% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 48,061 | $239.23 | 476,738 | −9.2% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 48,655 | $238.22 | 524,799 | −8.5% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 18,224 | $237.15 | 573,454 | −3.1% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 73,588 | $235.99 | 591,678 | −11% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 106,718 | $235.24 | 665,266 | −14% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 48,845 | $234.21 | 771,984 | −6.0% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 56,426 | $233.19 | 820,829 | −6.4% | Oct 5, 2026 |
| Open-market sale 10b5-1 box checked | 16,220 | $231.12 | 938,465 | −1.7% | Oct 5, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 29,090 | $234.16 | 522,248 | −5.3% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 14,546 | $234.16 | 260,217 | −5.3% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 37,778 | $234.16 | 785,236 | −4.6% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 50 | $235.01 | 410,782 | −0.0% | Sep 29, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 22,386 | $197.00 | 0 | −100% | Jul 15, 2026 |
| Open-market sale 10b5-1 box checked | 4,500 | $250.00 | 22,386 | −17% | Jun 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 300 | $213.40 | 412,032 | −0.1% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 1,264 | $207.67 | 415,932 | −0.3% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 1,900 | $208.84 | 414,032 | −0.5% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 1,100 | $209.74 | 412,932 | −0.3% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 400 | $210.53 | 412,532 | −0.1% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $211.88 | 412,332 | −0.0% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 900 | $214.81 | 411,132 | −0.2% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $215.59 | 410,932 | −0.0% | Sep 15, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $216.52 | 410,832 | −0.0% | Sep 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,000 | $208.63 | 0 | −100% | Sep 14, 2026 |
| Option exercise | 5,000 | — | 5,000 | — | Sep 14, 2026 |
| Option exercise | 2,000 | — | 2,000 | — | Sep 14, 2026 |
| Open-market sale 10b5-1 box checked | 5,000 | $209.26 | 0 | −100% | Sep 14, 2026 |
| Option exercise Stock Options | 5,000 | — | — | — | Sep 14, 2026 |
| Option exercise Stock Options | 2,000 | — | — | — | Sep 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | 273,885 | +0.5% | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,352 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 470 | $196.00 | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 2,667 | $269.64 | — | — | Aug 14, 2026 |
| Open-market sale | 5,000 | $268.61 | — | — | Aug 14, 2026 |
| Open-market sale | 9,622 | $266.67 | — | — | Aug 14, 2026 |
| Open-market sale | 10,113 | $265.45 | — | — | Aug 14, 2026 |
| Open-market sale | 9,283 | $264.78 | — | — | Aug 14, 2026 |
| Open-market sale | 13,315 | $263.32 | — | — | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 196 | $277.86 | — | — | Aug 14, 2026 |
| Open-market sale | 400 | $277.02 | — | — | Aug 14, 2026 |
| Open-market sale | 300 | $275.80 | — | — | Aug 14, 2026 |
| Open-market sale | 500 | $273.78 | — | — | Aug 14, 2026 |
| Open-market sale | 1,000 | $272.76 | — | — | Aug 14, 2026 |
| Open-market sale | 700 | $271.75 | — | — | Aug 14, 2026 |
| Open-market sale | 600 | $270.44 | — | — | Aug 14, 2026 |
| Open-market sale | 404 | $267.87 | — | — | Aug 14, 2026 |
| Open-market sale | 496 | $266.78 | — | — | Aug 14, 2026 |
| Open-market sale | 400 | $264.75 | — | — | Aug 14, 2026 |
| Open-market sale | 200 | $263.51 | — | — | Aug 14, 2026 |
| Open-market sale | 100 | $258.55 | — | — | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 7,793 | $218.16 | — | — | Jul 22, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 300 | $201.24 | — | — | Jul 15, 2026 |
| Open-market sale | 300 | $200.04 | — | — | Jul 15, 2026 |
| Open-market sale | 1,058 | $198.87 | — | — | Jul 15, 2026 |
| Open-market sale | 500 | $198.25 | — | — | Jul 15, 2026 |
| Open-market sale | 1,500 | $197.30 | — | — | Jul 15, 2026 |
| Open-market sale | 1,200 | $196.10 | — | — | Jul 15, 2026 |
| Open-market sale | 700 | $194.07 | — | — | Jul 15, 2026 |
| Open-market sale | 200 | $187.79 | — | — | Jul 15, 2026 |
| Open-market sale | 200 | $189.24 | — | — | Jul 15, 2026 |
| Open-market sale | 600 | $202.29 | — | — | Jul 15, 2026 |
| Open-market sale | 400 | $192.33 | — | — | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 46,627 | $235.45 | 821,662 | −5.4% | Jul 1, 2026 |
Listing the 25 most recent of 27 Form 4 filings held for NBIS; the 2 older filings (filed Jul 6 – Jul 6, 2026) are counted above but not listed here — see NBIS's full Form 4 filing history on SEC EDGAR.
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to NBIS's (Oct 19, 2026).
Frequently asked about NBIS insider activity
How many insiders bought NBIS stock in these Form 4 filings?
1 distinct insider at Nebius Group NV reported 2 open-market purchases (Form 4 code P) of NBIS shares between Jul 6, 2026 and Oct 19, 2026, the most recent filed by Arne Grimme (Director) on Oct 16, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for NBIS?
The most recent Form 4 on this page was filed by John Wilson Boynton IV (Director) on Oct 19, 2026, reporting 19 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market NBIS insider sale shown?
The largest open-market sale among the filings shown was 106,718 NBIS shares at $235.24 (about $25,104,342) by Ophir Nave (COO) on Oct 5, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
Do the recent NBIS insider purchases have the Form 4 10b5-1 box checked?
Yes. All 2 NBIS open-market purchases among the filings shown have the Rule 10b5-1 box checked on the Form 4: the filer states that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c).
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track NBIS insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.