SEC Form 4
Nebius Group N.V. (NBIS) insider trading
In the 12 months to Oct 26, 2026, 8 NBIS insiders reported open-market sales of $266.3M across 21 filings; one director bought $125.2K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $266.3M
- 21 filings · 8 insiders
- Open-market purchases
- $125.2K
- 3 filings · Arne Grimme, Director
- Pre-arranged sales (10b5-1)
- 20 of 21
- $262.8M of $266.3M sold (99%)
Who traded NBIS, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
NBIS daily close from Oct 27, 2025 to Oct 26, 2026, between $73.87 and $286.69, last $160.45. 21 sale and 3 purchase filings by 9 insiders, marked at their filing dates. Ophir Nave, COO: sold $117.8M across 1 filing, first filed Oct 6, 2026, last Oct 6, 2026. Andrey Korolenko, Chief Infrastructure Officer: sold $105.1M across 2 filings, first filed Apr 8, 2026, last May 15, 2026. Charles E. Ryan, Director: sold $13.3M across 1 filing, first filed Aug 18, 2026, last Aug 18, 2026. Marc Boroditsky, Chief Revenue Officer: sold $10.2M across 5 filings, first filed Apr 16, 2026, last Oct 13, 2026. Elena Bunina, Director: sold $8.3M across 4 filings, first filed Apr 14, 2026, last May 15, 2026. John Wilson Boynton IV, Director: sold $6.9M across 6 filings, first filed Jul 17, 2026, last Oct 19, 2026. Arne Grimme, Director: bought $125.2K across 3 filings, first filed Oct 16, 2026, last Oct 21, 2026. 2 others: sold $4.8M across 2 filings, first filed May 22, 2026, last Jun 5, 2026.
Largest mark · tap a row for others
Ophir Nave · COO
Sale $117,765,468
500,000 shares at $235.53 avg
Filed Oct 6, 2026 · traded Oct 5
Pre-arranged (10b5-1) · close on filing date $249.87
Ophir Nave · COO
COO
$117.8M soldAndrey Korolenko · Chief Infrastructure Officer
Chief Infrastructure Officer
$105.1M soldCharles E. Ryan · Director
Director
$13.3M soldMarc Boroditsky · Chief Revenue Officer
Chief Revenue Officer
$10.2M soldElena Bunina · Director
Director
$8.3M soldJohn Wilson Boynton IV · Director
Director
$6.9M soldArne Grimme · Director
Director
$125.2K bought2 others
Combined, one mark per week
$4.8M soldOpen-market trades
24 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Ophir Nave | COO | $117.8M | — | 1 | 100% of sales | |
| Andrey Korolenko | Chief Infrastructure Officer | $105.1M | — | 2 | 97% of sales | |
| Charles E. Ryan | Director | $13.3M | — | 1 | 100% of sales | |
| Marc Boroditsky | Chief Revenue Officer | $10.2M | — | 5 | 100% of sales | |
| Elena Bunina | Director | $8.3M | — | 4 | 100% of sales | |
| John Wilson Boynton IV | Director | $6.9M | — | 6 | 100% of sales | |
| Danila Shtan | Chief Technology Officer | $3.7M | — | 1 | 100% of sales | |
| Boaz Tal | General Counsel | $1.0M | — | 1 | 100% of sales | |
| Arne Grimme | Director | — | $125.2K | 3 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Arne Grimme Director | PurchasePre-arranged (10b5-1) | 299 | $166.26 | $49.7K | 6,628 | |
traded | Arne Grimme Director | PurchasePre-arranged (10b5-1) | 148 | $169.99 | $25.2K | 6,329 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 7,260 | $177.63 | $1.3M | 404,582 | |
traded | Arne Grimme Director | PurchasePre-arranged (10b5-1) | 296 | $169.99 | $50.3K | 6,181 | |
traded | Marc Boroditsky Chief Revenue Officer | SalePre-arranged (10b5-1) | 7,000 | $211.23 | $1.5M | 0 | |
traded | Ophir Nave COO | SalePre-arranged (10b5-1) | 500,000 | $235.53 | $117.8M | 524,799 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 50 | $235.01 | $11.8K | 410,782 | |
traded | Marc Boroditsky Chief Revenue Officer | SalePre-arranged (10b5-1) | 26,886 | $205.87 | $5.5M | 0 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 6,364 | $210.36 | $1.3M | 411,132 | |
traded | Marc Boroditsky Chief Revenue Officer | SalePre-arranged (10b5-1) | 7,000 | $209.08 | $1.5M | 0 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 5,296 | $270.99 | $1.4M | 419,540 | |
traded | Charles E. Ryan Director | SalePre-arranged (10b5-1) | 50,000 | $265.53 | $13.3M | 299,935 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 5,812 | $253.29 | $1.5M | 429,704 | |
traded | John Wilson Boynton IV Director | SalePre-arranged (10b5-1) | 6,958 | $197.00 | $1.4M | 422,340 | |
traded | Danila Shtan Chief Technology Officer | SalePre-arranged (10b5-1) | 15,678 | $238.96 | $3.7M | 291,700 | |
traded | Boaz Tal General Counsel | SalePre-arranged (10b5-1) | 5,100 | $199.39 | $1.0M | 81,254 | |
traded | Marc Boroditsky Chief Revenue Officer | SalePre-arranged (10b5-1) | 4,500 | $217.55 | $979.0K | 37,662 | |
traded | Elena Bunina Director | SalePre-arranged (10b5-1) | 10,894 | $206.87 | $2.3M | 10,772 | |
traded | Andrey Korolenko Chief Infrastructure Officer | SalePre-arranged (10b5-1) | 500,000 | $203.24 | $101.6M | 585,209 | |
traded | Elena Bunina Director | SalePre-arranged (10b5-1) | 10,819 | $184.86 | $2.0M | 26,929 | |
traded | Elena Bunina Director | SalePre-arranged (10b5-1) | 5,882 | $170.00 | $999.9K | 32,485 | |
traded | Marc Boroditsky Chief Revenue Officer | SalePre-arranged (10b5-1) | 4,500 | $160.10 | $720.5K | 42,162 | |
traded | Elena Bunina Director | SalePre-arranged (10b5-1) | 20,060 | $149.93 | $3.0M | 38,367 | |
traded | Andrey Korolenko Chief Infrastructure Officer | Sale | 31,357 | $111.20 | $3.5M | 585,209 |
GET /stocks/filings/vX/form-4?tickers=NBIS&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"NBIS",
"YNDX"
],
"issuer_cik": "0001513845",
"owner_cik": "0002091395",
"accession_number": "0001513845-26-000136",
"form_type": "4",
"filing_date": "2026-10-21",
"period_of_report": "2026-10-20",
"issuer_name": "Nebius Group N.V.",
"issuer_trading_symbol": "NBIS",
"owner_name": "Grimme Arne",
"is_director": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-20",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 151,
"transaction_price_per_share": 164.62,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 6480,
"transaction_value": 24857.62,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The purchases reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026."
}
],
"remarks": "Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Act, the reporting person's transactions in the issuer's equity securities are exempt from Sections 16(b) and 16(c) of the Act."
},
{
"tickers": [
"NBIS",
"YNDX"
],
"issuer_cik": "0001513845",
"owner_cik": "0002091395",
"accession_number": "0001513845-26-000136",
"form_type": "4",
"filing_date": "2026-10-21",
"period_of_report": "2026-10-20",
"issuer_name": "Nebius Group N.V.",
"issuer_trading_symbol": "NBIS",
"owner_name": "Grimme Arne",
"is_director": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Shares",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-21",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 148,
"transaction_price_per_share": 167.94,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 6628,
"transaction_value": 24855.12,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The purchases reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026."
}
],
"remarks": "Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Act, the reporting person's transactions in the issuer's equity securities are exempt from Sections 16(b) and 16(c) of the Act."
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 26 records
- Option exercises4 records
- Tax withholding (sold to cover)13 records
- Grants and awards9 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
Has Nebius Group N.V.'s CEO sold stock?
No. Arkadiy Volozh (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is NBIS’s insider data?
These are NBIS Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track NBIS insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for NBIS every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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