NBIS SEC Filing News — Nebius Group N.V.

Latest SEC filings for Nebius Group N.V. (NBIS) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-15.

Nebius Group N.V., a technology company, engages in building full-stack infrastructure to service the global AI industry in the United States, the United Kingdom, and internationally. It offers Nebius builds full-stack infrastructure for AI, including large-scale GPU clusters, cloud platforms, and tools and services for developers. The company also provides TripleTen, an edtech platform for re-skilling individuals for careers in technolgy; and Avride, which develops autonomous driving technology…
Sector: Communication Services Industry: Internet Content & Information Market Cap: $47.9B CIK: 1513845
20
Total Filings
0
Bullish Classifications
10
Bearish Classifications
16
Insider Transactions
0
Material Events (8-K)
0
Periodic Reports
Rule-based classifications for NBIS currently lean bearish. Of the 20 filing records displayed, 10 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
NBIS Filing Activity Snapshot 2026-09-03 — 2026-10-15
Insider Transactions (Form 4)
0 buys vs 9 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$121.41M
OPHIR NAVE · 2026-10-05
500,000 shares · Form 144
Form 144 Notices
4
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 16 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 16 filings in this group are Form 4s for Nebius Group N.V.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 16 insider filings shown, the breakdown is 9 open-market sale and 7 compensation award. 9 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×9
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Compensation award ×7
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Form 4 Open-market sale Insider Selling 2026-10-13

NBIS insider Boroditsky Marc (Chief Revenue Officer) sold 7,000 shares (~$1.48M)

Boroditsky Marc, listed as Chief Revenue Officer at Nebius Group N.V., reported an open-market sale of 7,000 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 7,000 — —
S Open-market sale 7,000 $211.23 $1.48M
M Option exercise derivative · Stock Options 7,000 — —
Filing: Form 4 (Insider Transaction) Insider: Boroditsky Marc (Chief Revenue Officer) Shares: 7,000 Est. Value: $1.48M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-10-06

NBIS insider Nave Ophir (Director, COO) sold 500,000 shares (~$117.77M)

Nave Ophir, listed as Director, COO at Nebius Group N.V., reported an open-market sale of 500,000 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 16,220 $231.12 $3.75M
S Open-market sale 61,210 $232.37 $14.22M
S Open-market sale 56,426 $233.19 $13.16M
S Open-market sale 48,845 $234.21 $11.44M
S Open-market sale 106,718 $235.24 $25.10M
S Open-market sale 73,588 $235.99 $17.37M
S Open-market sale 18,224 $237.15 $4.32M
S Open-market sale 48,655 $238.22 $11.59M
S Open-market sale 48,061 $239.23 $11.50M
S Open-market sale 14,853 $240.00 $3.56M
S Open-market sale 1,200 $241.02 $289.2K
S Open-market sale 6,000 $243.50 $1.46M
Filing: Form 4 (Insider Transaction) Insider: Nave Ophir (Director, COO) Shares: 500,000 Est. Value: $117.77M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-10-05

NBIS insider Korolenko Andrey (Chief Infrastructure Officer) sold 29,090 shares (~$6.81M)

Korolenko Andrey, listed as Chief Infrastructure Officer at Nebius Group N.V., reported an open-market sale of 29,090 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 29,090 $234.16 $6.81M
Filing: Form 4 (Insider Transaction) Insider: Korolenko Andrey (Chief Infrastructure Officer) Shares: 29,090 Est. Value: $6.81M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-10-05

NBIS insider Shtan Danila (Chief Technology Officer) sold 14,546 shares (~$3.41M)

Shtan Danila, listed as Chief Technology Officer at Nebius Group N.V., reported an open-market sale of 14,546 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 14,546 $234.16 $3.41M
Filing: Form 4 (Insider Transaction) Insider: Shtan Danila (Chief Technology Officer) Shares: 14,546 Est. Value: $3.41M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-10-05

NBIS insider Volozh Arkadiy (Director, CEO, 10% Owner) sold 37,778 shares (~$8.85M)

Volozh Arkadiy, listed as Director, CEO, 10% Owner at Nebius Group N.V., reported an open-market sale of 37,778 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 37,778 $234.16 $8.85M
Filing: Form 4 (Insider Transaction) Insider: Volozh Arkadiy (Director, CEO, 10% Owner) Shares: 37,778 Est. Value: $8.85M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-10-01

NBIS insider Boynton John Wilson IV (Director) sold 50 shares (~$11.8K)

Boynton John Wilson IV, listed as Director at Nebius Group N.V., reported an open-market sale of 50 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 50 $235.01 $11.8K
Filing: Form 4 (Insider Transaction) Insider: Boynton John Wilson IV (Director) Shares: 50 Est. Value: $11.8K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-21

NBIS insider Boroditsky Marc (Chief Revenue Officer) sold 26,886 shares (~$5.54M)

Boroditsky Marc, listed as Chief Revenue Officer at Nebius Group N.V., reported an open-market sale of 26,886 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 4,500 $250.00 $1.12M
S Open-market sale 22,386 $197.00 $4.41M
Filing: Form 4 (Insider Transaction) Insider: Boroditsky Marc (Chief Revenue Officer) Shares: 26,886 Est. Value: $5.54M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-17

NBIS insider Boynton John Wilson IV (Director) sold 6,364 shares (~$1.34M)

Boynton John Wilson IV, listed as Director at Nebius Group N.V., reported an open-market sale of 6,364 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 1,264 $207.67 $262.5K
S Open-market sale 1,900 $208.84 $396.8K
S Open-market sale 1,100 $209.74 $230.7K
S Open-market sale 400 $210.53 $84.2K
S Open-market sale 200 $211.88 $42.4K
S Open-market sale 300 $213.40 $64.0K
S Open-market sale 900 $214.81 $193.3K
S Open-market sale 200 $215.59 $43.1K
S Open-market sale 100 $216.52 $21.7K
Filing: Form 4 (Insider Transaction) Insider: Boynton John Wilson IV (Director) Shares: 6,364 Est. Value: $1.34M
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-09-16

NBIS insider Boroditsky Marc (Chief Revenue Officer) sold 7,000 shares (~$1.46M)

Boroditsky Marc, listed as Chief Revenue Officer at Nebius Group N.V., reported an open-market sale of 7,000 NBIS shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 5,000 — —
S Open-market sale 5,000 $209.26 $1.05M
M Option exercise 2,000 — —
S Open-market sale 2,000 $208.63 $417.3K
M Option exercise derivative · Stock Options 5,000 — —
M Option exercise derivative · Stock Options 2,000 — —
Filing: Form 4 (Insider Transaction) Insider: Boroditsky Marc (Chief Revenue Officer) Shares: 7,000 Est. Value: $1.46M
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Weigand Matthew Robert (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Weigand Matthew Robert (Director) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Ryan Charles E (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Ryan Charles E (Director) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Grimme Arne (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Grimme Arne (Director) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Radinsky Kira (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Radinsky Kira (Director) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Bunina Elena (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Bunina Elena (Director) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Nave Ophir (Director, COO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Nave Ophir (Director, COO) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-09-03

NBIS insider Form 4 filed for equity award, exercise, or tax withholding

Volozh Arkadiy (Director, CEO, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
A Compensation award 1,352 — —
Filing: Form 4 (Insider Transaction) Insider: Volozh Arkadiy (Director, CEO, 10% Owner) Shares: 1,352
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 4 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Nebius Group N.V. has 4 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-10-15

NBIS Form 144 filed for proposed insider sale by THE JOHN W BOYNTON IV TR OF 2006 (7,260 shares) ~$1.35M

THE JOHN W BOYNTON IV TR OF 2006 filed a Form 144 with the SEC indicating intent to sell NBIS (Nebius Group N.V.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: THE JOHN W BOYNTON IV TR OF 2006 Shares: 7,260 Est. Value: $1.35M
View on SEC EDGAR → Open Filing Document →
Form 144 Large Proposed Insider Sale 2026-10-05

NBIS Form 144 filed for proposed insider sale by OPHIR NAVE (500,000 shares) ~$121.41M

OPHIR NAVE filed a Form 144 with the SEC indicating intent to sell NBIS (Nebius Group N.V.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: OPHIR NAVE Shares: 500,000 Est. Value: $121.41M
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-29

NBIS Form 144 filed for proposed insider sale by THE JOHN W BOYNTON IV TR OF 2006 (50 shares) ~$11.9K

THE JOHN W BOYNTON IV TR OF 2006 filed a Form 144 with the SEC indicating intent to sell NBIS (Nebius Group N.V.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: THE JOHN W BOYNTON IV TR OF 2006 Shares: 50 Est. Value: $11.9K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-09-15

NBIS Form 144 filed for proposed insider sale by THE JOHN W BOYNTON IV TR OF 2006 (6,364 shares) ~$1.35M

THE JOHN W BOYNTON IV TR OF 2006 filed a Form 144 with the SEC indicating intent to sell NBIS (Nebius Group N.V.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: THE JOHN W BOYNTON IV TR OF 2006 Shares: 6,364 Est. Value: $1.35M
View on SEC EDGAR → Open Filing Document →

How we classify Nebius Group N.V.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on NBIS. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — NBIS SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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