CHOUDARY KIRAN KUMAR (Chief Financial Officer) sold 2.8% of their position (28K shares) of RUBRIK, INC. on the open market

Open‑market sale worth $2.29M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 8 sales

CHOUDARY KIRAN KUMAR

Filed: 7/16/2026ACC: 0002020220-26-000018

InsiderCHOUDARY KIRAN KUMARCIK 2020220

→

IssuerRUBRIK, INC.CIK 1943896

Officer· Chief Financial Officer

Since Feb 2026

-28K

Net shares

Net seller

$2.29M

Total sold

Open market trades

0B · 8S

Total transactions

24K acquired · 52K disposed

Non-Derivative Transactions9

Class A Common Stock

Direct

C · Conversion

+12K

Price / share

—

Trade value

—

% of position

1.2%

7/15/2026

1M→1.01M

Class A Common Stock

Direct

S · Sale

−15.60K

Price / share

$80.15

Trade value

$1.25M

% of position

1.5%

7/15/2026

1.01M→996.47K

Class A Common Stock

Direct

S · Sale

−4.80K

Price / share

$80.94

Trade value

$388.51K

% of position

0.5%

7/15/2026

996.47K→991.67K

Class A Common Stock

Direct

S · Sale

−1.20K

Price / share

$82.27

Trade value

$98.72K

% of position

0.1%

7/15/2026

991.67K→990.47K

Class A Common Stock

Direct

S · Sale

−1.80K

Price / share

$83.37

Trade value

$150.07K

% of position

0.2%

7/15/2026

990.47K→988.67K

Class A Common Stock

Direct

S · Sale

−400.00

Price / share

$85.15

Trade value

$34.06K

% of position

0.0%

7/15/2026

988.67K→988.27K

Class A Common Stock

Direct

S · Sale

−2.10K

Price / share

$86.58

Trade value

$181.82K

% of position

0.2%

7/15/2026

988.27K→986.17K

Class A Common Stock

Direct

S · Sale

−1K

Price / share

$87.35

Trade value

$87.35K

% of position

0.1%

7/15/2026

986.17K→985.17K

Class A Common Stock

Direct

S · Sale

−1.10K

Price / share

$88.64

Trade value

$97.50K

% of position

0.1%

7/15/2026

985.17K→984.07K

Total

Net shares

−16K

Net value

-$2.29M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	7/15/2026	C · Conversion	+12K	—	—	1.2%	1M	1.01M
Class A Common Stock Direct	7/15/2026	S · Sale	−15.60K	$80.15	$1.25M	1.5%	1.01M	996.47K
Class A Common Stock Direct	7/15/2026	S · Sale	−4.80K	$80.94	$388.51K	0.5%	996.47K	991.67K
Class A Common Stock Direct	7/15/2026	S · Sale	−1.20K	$82.27	$98.72K	0.1%	991.67K	990.47K
Class A Common Stock Direct	7/15/2026	S · Sale	−1.80K	$83.37	$150.07K	0.2%	990.47K	988.67K
Class A Common Stock Direct	7/15/2026	S · Sale	−400.00	$85.15	$34.06K	0.0%	988.67K	988.27K
Class A Common Stock Direct	7/15/2026	S · Sale	−2.10K	$86.58	$181.82K	0.2%	988.27K	986.17K
Class A Common Stock Direct	7/15/2026	S · Sale	−1K	$87.35	$87.35K	0.1%	986.17K	985.17K
Class A Common Stock Direct	7/15/2026	S · Sale	−1.10K	$88.64	$97.50K	0.1%	985.17K	984.07K
Total			−16K		-$2.29M

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class B Common Stock

12K shares

−12K

Strike price

7.99

Held after

19.45K

Exercisable

—

7/15/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

12K shares

+12K

Strike price

Held after

12K

Exercisable

—

7/15/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

12K shares

−12K

Strike price

Held after

0.00

Exercisable

—

7/15/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock12K shares	7/15/2026	M · Option Exercise	−12K	7.99	—	19.45K
Class B Common Stock Direct	Class A Common Stock12K shares	7/15/2026	M · Option Exercise	+12K		—	12K
Class B Common Stock Direct	Class A Common Stock12K shares	7/15/2026	C · Conversion	−12K		—	0.00