Rubrik CTO Arvind Nithrakashyap Sells $4.51M in Class A Stock Under Rule 10b5-1 Plan

Executive Summary

Rubrik, Inc. ($RBRK) Chief Technology Officer and Director Arvind Nithrakashyap reported the sale of 38,460 shares of Class A Common Stock across three consecutive trading sessions between November 2, 2026, and November 4, 2026. The sales generated aggregate gross proceeds of approximately $4.51 million at a volume-weighted average price of roughly $117.39 per share.

Transaction Breakdown

• Mechanics: On each of November 2, November 3, and November 4, 2026, Mr. Nithrakashyap converted 12,820 shares of Class B Common Stock into Class A Common Stock on a 1-for-1 basis at no cost and sold them on the open market in multiple tranches.
  • November 2, 2026: Sold 12,820 shares across weighted-average price tiers ranging from $114.37 to $122.42 per share (total proceeds: $1,505,245.76).
  • November 3, 2026: Sold 12,820 shares across weighted-average price tiers ranging from $114.17 to $118.13 per share (total proceeds: $1,495,798.72).
  • November 4, 2026: Sold 12,820 shares across weighted-average price tiers ranging from $115.31 to $121.23 per share (total proceeds: $1,513,762.00).
• Total Disposition: 38,460 shares sold for an aggregate $4,514,806.48.

Plan and Ownership Structure

• Rule 10b5-1 Trading Plan: All sales were executed under a pre-established Rule 10b5-1 trading plan adopted on October 15, 2025.
• Remaining Equity Interests: Following these transactions, Mr. Nithrakashyap directly retains 272,538 shares of Class A Common Stock and 9,961,649 shares of Class B Common Stock, alongside 200,000 Class B shares held indirectly through the Nithrakashyap/Chatterjee Revocable Trust.
• Market Impact: Because the disposals were executed pursuant to an affirmative Rule 10b5-1 plan and represent less than 0.4% of his combined beneficial ownership of over 10.4 million shares, the trading significance is categorized as Low.