NBIS · Nebius Group N.V. · Insider Trading

The purchase reported on this Form 4 was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026.

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.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $167.45 to $168.38, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $174.24 to $175.15, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $184.32 to $184.37, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $171.19 to $171.55, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $187.76 to $188.64, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $181.05 to $181.56, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $166.37 to $167.25, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $177.71 to $178.33, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $178.82 to $179.23, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

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.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $179.94 to $180.71, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $172.51 to $172.66, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $186.41 to $186.88, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $175.24 to $176.18, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $176.49 to $177.34, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 15, 2026. The shares were sold in multiple transactions at prices ranging from $182.13 to $182.29, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026.

The options vested in quarterly installments beginning on 31 May 2026.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $236.68 to $237.66, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $231.68 to $232.67, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $233.68 to $234.67, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $234.68 to $235.67, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $235.68 to $236.65, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $240.99 to $241.04, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $239.74 to $240.65, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $243.03 to $243.72, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $238.68 to $239.65, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $230.67 to $231.66, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $232.68 to $233.67, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on October 5, 2026. The shares were sold in multiple transactions at prices ranging from $237.68 to $238.65, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

The shares were sold upon the vesting of restricted share units solely to cover estimated withholding taxes, pursuant to automatic sale instructions included in the relevant Restricted Share Unit Agreement. The sale was not a discretionary trade by the Reporting Person.

The shares were sold upon the vesting of restricted share units solely to cover estimated withholding taxes, pursuant to automatic sale instructions included in the relevant Restricted Share Unit Agreement. The sale was not a discretionary trade by the Reporting Person.

The shares were sold upon the vesting of restricted share units solely to cover estimated withholding taxes, pursuant to automatic sale instructions included in the relevant Restricted Share Unit Agreement. The sale was not a discretionary trade by the Reporting Person.

The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2026.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $214.42 to $215.18, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $215.52 to $215.65, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $209.32 to $210.25, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $211.70 to $212.05, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $210.38 to $210.77, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $207.17 to $208.14, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $208.30 to $209.27, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Reflects the weighted average sale price on September 15, 2026. The shares were sold in multiple transactions at prices ranging from $212.89 to $213.59, inclusive. The reporting person undertakes to provide Nebius Group N.V., any shareholder of Nebius Group N.V., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.