Nebius Group N.V. (NBIS) insider trading
Nebius Group N.V. insiders have made 6 open-market purchases worth $330k since Oct 16, 2026, by 1 insider. The latest: Arne Grimme (Director) bought $25k, filed Oct 30, 2026, scored 14 out of 100. The biggest: $122k by Arne Grimme, filed Oct 26, 2026.
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Insider purchases
| Filed | Insider | Stake | Score | Bought | 1 week | 1 month |
|---|---|---|---|---|---|---|
| Oct 30 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +2% stake | 14 | $25k 148 at $169.42 |
waiting | waiting |
| Oct 29 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +5% stake | 18 | $58k 353 at $163.57 |
waiting | waiting |
| Oct 26 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +12% stake | 27 | $122k 770 at $159.01 |
waiting | waiting |
| Oct 21 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +5% stake | 18 | $50k 299 at $166.26 |
+8.1% | waiting |
| Oct 20 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +2% stake | 14 | $25k 148 at $169.99 |
−0.6% | waiting |
| Oct 16 Form 4 (opens sec.gov) |
Arne GrimmeDirector · planned (10b5-1)Director · Planned (10b5-1) | +5% stake | 18 | $50k 296 at $169.99 |
−10.0% | waiting |
Track record (hypothetical): a week after the filing, these buys averaged −0.8% (33% up, 3 measured).
Insider sales
11 open-market sales on record
| Filed | Insider | Sold |
|---|---|---|
| Nov 2 Form 4 (opens sec.gov) |
John Wilson Boynton IVDirector · planned (10b5-1) | $58k 333 at $173.07 · 0% of holdings |
| Oct 19 Form 4 (opens sec.gov) |
John Wilson Boynton IVDirector · planned (10b5-1) | $1.3M 7,260 at $177.63 · 2% of holdings |
| Oct 13 Form 4 (opens sec.gov) |
Marc BoroditskyChief Revenue Officer · planned (10b5-1) · option shares | $1.5M 7,000 at $211.23 |
| Oct 6 Form 4 (opens sec.gov) |
Ophir NaveCOO · planned (10b5-1) | $118M 500,000 at $235.53 · 52% of holdings |
| Oct 5 Form 4 (opens sec.gov) |
Andrey KorolenkoChief Infrastructure Officer | $6.8M 29,090 at $234.16 · 5% of holdings |
| Oct 5 Form 4 (opens sec.gov) |
Danila ShtanChief Technology Officer | $3.4M 14,546 at $234.16 · 5% of holdings |
| Oct 5 Form 4 (opens sec.gov) |
Arkadiy VolozhCEO | $8.8M 37,778 at $234.16 · 5% of holdings |
| Oct 1 Form 4 (opens sec.gov) |
John Wilson Boynton IVDirector · planned (10b5-1) | $12k 50 at $235.01 · 0% of holdings |
| Sep 21 Form 4 (opens sec.gov) |
Marc BoroditskyChief Revenue Officer · planned (10b5-1) · filed late | $5.5M 26,886 at $205.87 · 100% of holdings |
| Sep 17 Form 4 (opens sec.gov) |
John Wilson Boynton IVDirector · planned (10b5-1) | $1.3M 6,364 at $210.36 · 2% of holdings |
| Sep 16 Form 4 (opens sec.gov) |
Marc BoroditskyChief Revenue Officer · planned (10b5-1) · option shares | $1.5M 7,000 at $209.08 |
Most insider sales are planned in advance or made for personal reasons, so a sale says less than a buy.
NBIS trades reported by members of Congress
| Reported | Member | Trade | Amount |
|---|---|---|---|
| Jul 21 |  Alan ArmstrongR-OK · Senate113 days after the trade | Buy | $1K–$15K |
Members of Congress report trades up to 45 days later, in dollar ranges. Every member's trades.
Planned insider sales of NBIS (Form 144)
| Filed | Insider | To sell |
|---|---|---|
| Oct 29 Form 144 | THE JOHN W BOYNTON IV TR OF 2006Director · 10b5-1 plan | $61k 333 shares from Oct 29 |
| Oct 15 Form 144 | THE JOHN W BOYNTON IV TR OF 2006Director · 10b5-1 plan | $1.4M 7,260 shares from Oct 15 |
A Form 144 is filed before an insider sells restricted or control shares; the Form 4 reports the sale once made.
Insiders who bought NBIS
- Arne Grimme Director
Questions
Are insiders buying NBIS stock?
Yes. In the last 90 days, 6 open-market purchases were filed, worth $330k, against $148M of open-market sales.
Who bought NBIS stock most recently?
Arne Grimme, Director, bought 148 shares for $25k (Form 4 (opens sec.gov), filed Oct 30, 2026).
How does InsiderBeacon score an insider buy?
Out of 100, from who bought, how much their stake grew, the size of the trade, whether other insiders bought within ten days, where the price sat in its 52-week range, and whether it was a first or a routine buy. The score is fixed when the filing arrives. The formula and the research behind it.
Insiders are also buying, same industry
Data as of Nov 2, 2026, from SEC EDGAR Form 4 filings: open-market purchases (code P) of $25,000 or more, and open-market sales. Every row links to its filing. Scores summarise what a filing says (how the score works); outcomes are hypothetical, from the first close after the filing, and past results don't predict future ones. Disclaimer