Form 4/A for RBRK Rubrik, Inc.

Accepted 2026-01-16 00:00:00 ET · period of report 2025-12-12 · accession 0001366050-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
MAI	2026-01-16	2025-12-12	RBRK	Mhatre Ravi	Dir	S - Sale	$85.27	-5,307	0	-100%	-$452.5K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Class A Common Stock	2025-12-12	S	D	3,707	$84.96	1,600	I By Lightspeed Management Company, L.L.C.	—	—	(F1) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.60 to $85.31 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. (F2) Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
2	Common	Class A Common Stock	2025-12-12	S	D	1,600	$85.99	0	I By Lightspeed Management Company, L.L.C.	—	—	(F2) Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.