NITHRAKASHYAP ARVIND (Chief Technology Officer) sold 11.2% of their position (38.46K shares) of RUBRIK, INC. on the open market

Open‑market sale worth $3.33M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 16 sales

NITHRAKASHYAP ARVIND

Filed: 7/8/2026ACC: 0002019143-26-000015

InsiderNITHRAKASHYAP ARVINDCIK 2019143

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IssuerRUBRIK, INC.CIK 1943896

DirectorOfficer10% Owner· Chief Technology Officer

Since Apr 2024

-38.46K

Net shares

Net seller

$3.33M

Total sold

Open market trades

0B · 16S

Total transactions

38.46K acquired · 76.92K disposed

Non-Derivative Transactions19

Class A Common Stock

Direct

C · Conversion

+12.82K

Price / share

—

Trade value

—

% of position

4.2%

7/6/2026

303.61K→316.43K

Class A Common Stock

Direct

S · Sale

−192.00

Price / share

$83.37

Trade value

$16.01K

% of position

0.1%

7/6/2026

316.43K→316.24K

Class A Common Stock

Direct

S · Sale

−257.00

Price / share

$85.04

Trade value

$21.86K

% of position

0.1%

7/6/2026

316.24K→315.98K

Class A Common Stock

Direct

S · Sale

−562.00

Price / share

$85.56

Trade value

$48.08K

% of position

0.2%

7/6/2026

315.98K→315.42K

Class A Common Stock

Direct

S · Sale

−665.00

Price / share

$86.91

Trade value

$57.80K

% of position

0.2%

7/6/2026

315.42K→314.75K

Class A Common Stock

Direct

S · Sale

−6.75K

Price / share

$87.66

Trade value

$592.06K

% of position

2.1%

7/6/2026

314.75K→308K

Class A Common Stock

Direct

S · Sale

−4.13K

Price / share

$88.69

Trade value

$366.20K

% of position

1.3%

7/6/2026

308K→303.87K

Class A Common Stock

Direct

S · Sale

−261.00

Price / share

$89.28

Trade value

$23.30K

% of position

0.1%

7/6/2026

303.87K→303.61K

Class A Common Stock

Direct

C · Conversion

+12.82K

Price / share

—

Trade value

—

% of position

4.2%

7/7/2026

303.61K→316.43K

Class A Common Stock

Direct

S · Sale

−749.00

Price / share

$85.44

Trade value

$63.99K

% of position

0.2%

7/7/2026

316.43K→315.68K

Class A Common Stock

Direct

S · Sale

−1.82K

Price / share

$86.45

Trade value

$157.43K

% of position

0.6%

7/7/2026

315.68K→313.86K

Class A Common Stock

Direct

S · Sale

−4.96K

Price / share

$87.32

Trade value

$432.85K

% of position

1.6%

7/7/2026

313.86K→308.90K

Class A Common Stock

Direct

S · Sale

−3.98K

Price / share

$88.33

Trade value

$351.38K

% of position

1.3%

7/7/2026

308.90K→304.93K

Class A Common Stock

Direct

S · Sale

−1.31K

Price / share

$89.13

Trade value

$117.21K

% of position

0.4%

7/7/2026

304.93K→303.61K

Class A Common Stock

Direct

C · Conversion

+12.82K

Price / share

—

Trade value

—

% of position

4.2%

7/8/2026

303.61K→316.43K

Class A Common Stock

Direct

S · Sale

−6.73K

Price / share

$84.02

Trade value

$565.29K

% of position

2.1%

7/8/2026

316.43K→309.70K

Class A Common Stock

Direct

S · Sale

−4.23K

Price / share

$84.87

Trade value

$359.25K

% of position

1.4%

7/8/2026

309.70K→305.47K

Class A Common Stock

Direct

S · Sale

−1.45K

Price / share

$85.67

Trade value

$123.88K

% of position

0.5%

7/8/2026

305.47K→304.02K

Class A Common Stock

Direct

S · Sale

−413.00

Price / share

$86.81

Trade value

$35.85K

% of position

0.1%

7/8/2026

304.02K→303.61K

Total

Net shares

+0.00

Net value

-$3.33M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	7/6/2026	C · Conversion	+12.82K	—	—	4.2%	303.61K	316.43K
Class A Common Stock Direct	7/6/2026	S · Sale	−192.00	$83.37	$16.01K	0.1%	316.43K	316.24K
Class A Common Stock Direct	7/6/2026	S · Sale	−257.00	$85.04	$21.86K	0.1%	316.24K	315.98K
Class A Common Stock Direct	7/6/2026	S · Sale	−562.00	$85.56	$48.08K	0.2%	315.98K	315.42K
Class A Common Stock Direct	7/6/2026	S · Sale	−665.00	$86.91	$57.80K	0.2%	315.42K	314.75K
Class A Common Stock Direct	7/6/2026	S · Sale	−6.75K	$87.66	$592.06K	2.1%	314.75K	308K
Class A Common Stock Direct	7/6/2026	S · Sale	−4.13K	$88.69	$366.20K	1.3%	308K	303.87K
Class A Common Stock Direct	7/6/2026	S · Sale	−261.00	$89.28	$23.30K	0.1%	303.87K	303.61K
Class A Common Stock Direct	7/7/2026	C · Conversion	+12.82K	—	—	4.2%	303.61K	316.43K
Class A Common Stock Direct	7/7/2026	S · Sale	−749.00	$85.44	$63.99K	0.2%	316.43K	315.68K
Class A Common Stock Direct	7/7/2026	S · Sale	−1.82K	$86.45	$157.43K	0.6%	315.68K	313.86K
Class A Common Stock Direct	7/7/2026	S · Sale	−4.96K	$87.32	$432.85K	1.6%	313.86K	308.90K
Class A Common Stock Direct	7/7/2026	S · Sale	−3.98K	$88.33	$351.38K	1.3%	308.90K	304.93K
Class A Common Stock Direct	7/7/2026	S · Sale	−1.31K	$89.13	$117.21K	0.4%	304.93K	303.61K
Class A Common Stock Direct	7/8/2026	C · Conversion	+12.82K	—	—	4.2%	303.61K	316.43K
Class A Common Stock Direct	7/8/2026	S · Sale	−6.73K	$84.02	$565.29K	2.1%	316.43K	309.70K
Class A Common Stock Direct	7/8/2026	S · Sale	−4.23K	$84.87	$359.25K	1.4%	309.70K	305.47K
Class A Common Stock Direct	7/8/2026	S · Sale	−1.45K	$85.67	$123.88K	0.5%	305.47K	304.02K
Class A Common Stock Direct	7/8/2026	S · Sale	−413.00	$86.81	$35.85K	0.1%	304.02K	303.61K
Total			+0.00		-$3.33M

Derivative Transactions3

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

12.82K shares

−12.82K

Strike price

Held after

10.12M

Exercisable

—

7/6/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

12.82K shares

−12.82K

Strike price

Held after

10.11M

Exercisable

—

7/7/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

12.82K shares

−12.82K

Strike price

Held after

10.09M

Exercisable

—

7/8/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Class B Common Stock Direct	Class A Common Stock12.82K shares	7/6/2026	C · Conversion	−12.82K	—	10.12M
Class B Common Stock Direct	Class A Common Stock12.82K shares	7/7/2026	C · Conversion	−12.82K	—	10.11M
Class B Common Stock Direct	Class A Common Stock12.82K shares	7/8/2026	C · Conversion	−12.82K	—	10.09M

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)1

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

200K

Shares owned

200K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

200K

Owned

200K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock		—	—	200K	200K
Total					200K	200K