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Insider Cluster (3 insiders) ·Filed Oct 20, 2026

NBIS

Nebius Group N.V.
BEARISH
Impact 4/10
Horizondays Processed7d 5h ago
Insider cluster: 3 insiders, $1.6M total
Actionable Insight ▼ Bearish

The director selling cluster is notable for its size and concentration on a single day, but the absence of C-suite selling (CRO sold separately) and the small director purchases suggest mixed conviction. Monitor next 8-K for any material negative news or earnings pre-announcement that could explain the selling.

DirectionBearish
Confidencemedium
Horizondays
Latest settled — T+1d ⚠ clustered
NBIS ▲ +0.07% at T+1d
SHORT call ✗ call lost -0.07% · α vs SPY +0.46% · entry $171.45 → $171.57
Next anchor: T+5d due 4h ago
Latest observation: T+3 -1.95% FF3 residual α
Entry = T+0 close
Oct 20, 2026
via day close
T+1d
+0.07%
call -0.07% · α +0.46%
$171.57
settled 6d ago
T+5d
Pending
due 4h ago
T+20d
Pending
in 21d
T+60d
Pending
in 3mo

Price Chart

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Executive Summary

A mixed insider cluster at Nebius Group shows a director (Boynton) selling ~$1.3M in open-market sales across multiple trades on Oct 15, while another director (Grimme) made two small open-market purchases totaling ~$50K. The CRO (Boroditsky) also sold $1.48M on Oct 12. The selling heavily outweighs buying by dollar value, but the total sales represent a modest fraction of market cap, and the director selling pattern is not C-suite. The cluster is directionally bearish on a net basis but not alarming in magnitude.

Key Financial Metrics

Direction
selling
Total Value
$2.8M
Insiders
3

Key Facts

  • Director Boynton John Wilson IV sold ~$1.3M in open-market sales across 17 trades on Oct 15, at prices from $164.80 to $188.20.
  • CRO Boroditsky Marc sold $1.48M (7,000 shares) on Oct 12 at $211.23.
  • Director Grimme Arne made two small open-market purchases totaling ~$50K (296 shares) at $169.99 on Oct 15-16.
  • Net dollar value of open-market sales is ~$2.8M vs. ~$50K in purchases; net direction is heavily selling.
  • No 10b5-1 plan indication was noted for the director sales, but the pattern (many small lots on one day) could be liquidity-driven.

Financial Impact

Total insider selling of ~$2.8M in open-market sales over a 7-day window, representing roughly 0.1-0.2% of market cap (market cap not provided, but NBIS is a mid-cap).

insider sentimentdilution risk

Risk Factors

  • Director selling at increasing prices ($165-$188) could indicate a peak in the stock's recent rally.
  • CRO selling $1.48M shortly before the director cluster raises the question of whether senior management is reducing exposure ahead of a catalyst.
  • No 10b5-1 plan disclosed for the director sales, increasing the likelihood that the sales were discretionary.

Investment Themes

Software & IT

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-NBIS-1792492547764
28 reports for NBIS
Performance horizon
60% Hit rate @ T+1 9 of 15 directional calls Went positive at some point 13 of 15 best @ T+20▲ +56.25%Jul 17, 2026
Filters
Rows
Reports for NBIS — sortable, filterable
TypeNow
Oct 26, 2026
today
Insider Cluster
NEUTRAL ★ 2/10
$155.00awaiting T+1—$170.10 (+9.74%)
Oct 22, 2026
5d ago
6-K
BULLISH ★ 7/10
$159.17 $158.74▼ −0.27%▲ +0.25%$170.10 (+6.87%)
Oct 20, 2026
7d ago
Insider Cluster
BEARISH ★ 4/10
$171.45 $171.57▼ −0.07%▲ +0.46%$170.10 (+0.79%)
Oct 19, 2026
8d ago
Insider Cluster
BEARISH ★ 4/10
$170.24 $171.45▼ −0.71%▼ −0.38%$170.10 (+0.08%)
Oct 16, 2026
11d ago
Insider Cluster
BEARISH ★ 5/10
$170.24 $171.45▼ −0.71%▼ −0.38%$170.10 (+0.08%)
Oct 7, 2026
19d ago
SC 13G/A
NEUTRAL ★ 3/10
$219.71 $221.07▲ +0.62%▲ +0.02%$170.10 (−22.58%)
Oct 5, 2026
22d ago
Insider Cluster
BEARISH ★ 5/10
$232.57 $249.87▼ −7.44%▼ −6.89%$170.10 (+26.86%)
Sep 21, 2026
5w ago
Insider Cluster
BEARISH ★ 5/10
$236.12 $226.61▲ +4.03%▲ +3.31%$170.10 (+27.96%)
Sep 17, 2026
5w ago
Insider Cluster
NEUTRAL ★ 3/10
$217.99 $223.54▲ +2.55%▲ +2.67%$170.10 (−21.97%)
Aug 26, 2026
8w ago
6-K
NEUTRAL ★ 4/10
$213.93 $218.48▲ +2.13%▲ +1.47%$170.10 (−20.49%)
Showing 10 of 28

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Report published Oct 20, 2026