STOCK TITAN

Nebius Group (NBIS) CIO exercises options, sells 500K Class A shares under 10b5-1 plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

Nebius Group N.V. Chief Infrastructure Officer Andrey Korolenko reported combined option exercises and share sales in Class A Shares. He exercised stock options covering 500,000 Class A Shares at a $100.0000 exercise price and, on the same date, sold 500,000 Class A Shares in an open-market transaction at an average price of $203.2400 per share. Following these transactions, he directly holds 1,085,209 Class A Shares. The filing notes that the sales were made under a Rule 10b5-1 trading plan adopted on December 2, 2025, and that the options vested in quarterly installments beginning on March 31, 2025.

Positive

  • None.

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Insider Korolenko Andrey
Role Chief Infrastructure Officer
Sold 500,000 shs ($101.62M)
Type Security Shares Price Value
Exercise Stock Options 500,000 $0.00 --
Exercise Class A Shares 500,000 $0.00 --
Sale Class A Shares 500,000 $203.24 $101.62M
Holdings After Transaction: Stock Options — 1,500,000 shares (Direct, null); Class A Shares — 1,085,209 shares (Direct, null)
Footnotes (1)
  1. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2025. The options vested in quarterly installments beginning on March 31, 2025.
Shares sold 500,000 shares Class A Shares sold at $203.2400 on May 13, 2026
Sale price $203.2400 per share Open-market sale of Class A Shares
Options exercised 500,000 shares Stock options exercised into Class A Shares
Option exercise price $100.0000 per share Conversion price for stock options into Class A Shares
Post-transaction holdings 1,085,209 shares Direct Class A Shares held after transactions
Net share change -500,000 shares Net-sell direction per transaction summary
Option expiration April 10, 2035 Original expiration date for exercised stock options
10b5-1 plan adoption date December 2, 2025 Rule 10b5-1 trading plan governing the sales
Rule 10b5-1 trading plan regulatory
"The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
stock options financial
"The options vested in quarterly installments beginning on March 31, 2025."
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
open-market sale financial
"transaction_action: open-market sale"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Class A Shares financial
"security_title: Class A Shares"
Class A shares are one of a company’s distinct types of stock that come with a specific set of rights—commonly different voting power, dividend treatment, or transfer rules—defined in the company’s charter. Investors care because those rights affect control, income and resale value; like holding a seat at a table that has different rules or stronger chips than other seats, owning Class A changes how much influence and return you can expect.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Korolenko Andrey

(Last)(First)(Middle)
SCHIPHOL BOULEVARD 165

(Street)
SCHIPHOL1118BG

(City)(State)(Zip)

NETHERLANDS

(Country)
2. Issuer Name and Ticker or Trading Symbol
Nebius Group N.V. [ NBIS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Infrastructure Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)
05/15/2026
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Shares05/13/2026M500,000A$01,085,209D
Class A Shares05/13/2026S500,000(1)D$203.24585,209D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$10005/13/2026M500,00003/31/2025(2)04/10/2035Class A Shares500,000$01,500,000D
Explanation of Responses:
1. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2025.
2. The options vested in quarterly installments beginning on March 31, 2025.
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.
/s/ Anna Akimova, attorney-in fact for Mr. Korolenko05/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Nebius Group (NBIS) insider Andrey Korolenko report on this Form 4/A?

Andrey Korolenko reported exercising stock options for 500,000 Class A Shares and selling 500,000 Class A Shares in an open-market transaction, all on May 13, 2026, according to the Form 4/A disclosure.

How many Nebius Group (NBIS) shares did Andrey Korolenko sell and at what price?

He sold 500,000 Class A Shares at an average price of $203.2400 per share. This sale was reported as an open-market transaction under transaction code S in the Form 4/A.

What stock options did Andrey Korolenko exercise in Nebius Group (NBIS)?

He exercised stock options covering 500,000 Class A Shares with a $100.0000 per share exercise price. These options were reported as derivative securities with transaction code M, indicating an exercise or conversion event.

How many Nebius Group (NBIS) shares does Andrey Korolenko own after the reported transactions?

After the reported exercise and sale, Korolenko directly owns 1,085,209 Class A Shares. This total reflects his post-transaction holdings as disclosed in the Form 4/A data.

Were the Nebius Group (NBIS) share sales by Andrey Korolenko pre-planned?

Yes. The filing states the sales were executed under a Rule 10b5-1 trading plan adopted on December 2, 2025, indicating they were pre-arranged rather than discretionary trades.

When did Andrey Korolenko’s Nebius Group (NBIS) options start vesting?

The options began vesting in quarterly installments starting on March 31, 2025. This vesting schedule is disclosed in a footnote accompanying the Form 4/A transaction details.