RBRK · Rubrik, Inc. · Insider Trading

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.11 to $115.10 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.16 to $116.97 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

Fully vested.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.12 to $116.11 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.20 to $115.99 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

The shares are held of record by John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.34 to $116.65 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

The shares are held of record by John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.18 to $115.16 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

The shares are held of record by John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

On September 25, 2026, an entity of which the Reporting Person is the sole equity member (the "Entity") entered into a prepaid variable forward contract with an unaffiliated counterparty. The contract obligates the Entity to deliver to the counterparty up to 500,000 shares of the Issuer's Class A common stock (or, at the Entity's election, a cash settlement amount determined based on the market price of the Issuer's Class A common stock) on the scheduled settlement date of September 26, 2028. In exchange for assuming this obligation, the Entity is expected to receive a cash payment of $42,051,350 on September 28, 2026. The Entity pledged 500,000 shares of the Issuer's Class A common stock (the "Pledged Shares") to secure its obligations under the contract. In most instances, the Entity retains voting rights in the Pledged Shares during the term of the pledge.

Subject to customary adjustments, the number of shares of Class A common stock deliverable at settlement will be determined as follows: (a) if the closing price of Class A common stock on September 25, 2028 ("Settlement Price") is less than or equal to $93.14 ("Forward Floor Price"), the Entity will deliver to the counterparty 500,000 shares of Class A common stock; (b) if the Settlement Price is between the Forward Floor Price and $165.58 (the "Forward Cap Price"), the Entity will deliver to the counterparty a number of shares of Class A common stock having a value, based on the Settlement Price, of $46,570,000; and (c) if the Settlement Price exceeds the Forward Cap Price, the Entity will deliver to the counterparty a variable number of shares of Class A common stock equal to 500,000 multiplied by the sum of (i) the Forward Floor Price and (ii) the excess of the Settlement Price over the Forward Cap Price, divided by the Settlement Price.

The reporting person is the sole equity member of the SPV.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

Represents 500,000 shares transferred on September 24, 2026 to an entity of which the reporting person is the sole equity member. The transfer was exempt under Rule 16a-13 as a change in the form of beneficial ownership without a change in pecuniary interest.

The reporting person is the sole equity member of the SPV.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.83 to $107.82 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.66 to $106.61 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.84 to $108.34 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.16 to $103.13 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.09 to $101.97 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $103.46 to $103.52 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.88 to $100.53 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted April 15, 2026.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.55 to $99.42 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.315 to $91.30 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.41 to $89.26 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.315 to $92.30 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.31 to $88.05 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.315 to $90.2775 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.805 to $90.77 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.82 to $91.7625 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.785 to $92.67 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.775 to $89.77 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.805 to $91.79 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.80 to $92.195 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.

This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025.

The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.7975 to $90.79 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote.