THOMPSON JOHN WENDELL 4

4 · Rubrik, Inc. · Filed Mar 3, 2026

Insider Transaction Report

Form 4

Period: 2026-03-02

Rubrik, Inc.RBRK

THOMPSON JOHN WENDELL

Director

Transactions

Sale
Class A Common Stock
[F1][F2][F3]
2026-03-02$51.87/sh−200$10,374→ 24,800 total(indirect: By Trust)
Sale
Class A Common Stock
[F1][F4][F3]
2026-03-02$53.33/sh−1,000$53,330→ 23,800 total(indirect: By Trust)
Sale
Class A Common Stock
[F1][F5][F3]
2026-03-02$53.98/sh−1,300$70,174→ 22,500 total(indirect: By Trust)
Conversion
Class A Common Stock
2026-03-02+11,000→ 15,653 total
Sale
Class A Common Stock
[F1][F6]
2026-03-02$52.02/sh−500$26,010→ 15,153 total
Sale
Class A Common Stock
[F1][F7]
2026-03-02$53.30/sh−4,371$232,974→ 10,782 total
Sale
Class A Common Stock
[F1][F8]
2026-03-02$53.97/sh−6,129$330,782→ 4,653 total
Exercise/Conversion
Stock Option (Right to Buy)
[F9]
2026-03-02−11,000→ 132,946 total
Exercise: $4.38Exp: 2028-01-21→ Class B Common Stock (11,000 underlying)
Exercise/Conversion
Class B Common Stock
[F10]
2026-03-02+11,000→ 61,001 total
→ Class A Common Stock (11,000 underlying)
Conversion
Class B Common Stock
[F10]
2026-03-02−11,000→ 50,001 total
→ Class A Common Stock (11,000 underlying)

Holdings

Class B Common Stock
[F10][F3]
(indirect: By Trust)
→ Class A Common Stock (815,338 underlying)
815,338

Footnotes (10)

[F1]This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 6, 2025.
[F10]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.
[F2]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.51 to $52.23 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.
[F3]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.
[F4]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.66 to $53.58 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.
[F5]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.67 to $54.28 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.
[F6]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.51 to $52.33 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.
[F7]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.59 to $53.58 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.
[F8]The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.60 to $54.36 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.
[F9]Fully vested.

Signature

/s/ Larry Guo, Attorney-in-Fact|2026-03-03

Documents

1 file

4
form4-03042026_120318.xmlPrimary