THOMPSON JOHN WENDELL sold 74.4% of their position (13.50K shares) of RUBRIK, INC. on the open market

Open‑market sale worth $723.6K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales

THOMPSON JOHN WENDELL

Filed: 3/3/2026ACC: 0001207433-26-000008

InsiderTHOMPSON JOHN WENDELLCIK 1207433

→

IssuerRUBRIK, INC.CIK 1943896

Director

Since Mar 2026

-13.50K

Net shares

Net seller

$723.6K

Total sold

Open market trades

0B · 6S

Total transactions

22K acquired · 35.50K disposed

Non-Derivative Transactions7

Class A Common Stock

Indirect

S · Sale

−200.00

Price / share

$51.87

Trade value

$10.37K

% of position

0.8%

3/2/2026

25K→24.80K

Class A Common Stock

Indirect

S · Sale

−1K

Price / share

$53.33

Trade value

$53.33K

% of position

4.0%

3/2/2026

24.80K→23.80K

Class A Common Stock

Indirect

S · Sale

−1.30K

Price / share

$53.98

Trade value

$70.17K

% of position

5.5%

3/2/2026

23.80K→22.50K

Class A Common Stock

Direct

C · Conversion

+11K

Price / share

—

Trade value

—

% of position

236.4%

3/2/2026

4.65K→15.65K

Class A Common Stock

Direct

S · Sale

−500.00

Price / share

$52.02

Trade value

$26.01K

% of position

3.2%

3/2/2026

15.65K→15.15K

Class A Common Stock

Direct

S · Sale

−4.37K

Price / share

$53.30

Trade value

$232.97K

% of position

28.8%

3/2/2026

15.15K→10.78K

Class A Common Stock

Direct

S · Sale

−6.13K

Price / share

$53.97

Trade value

$330.78K

% of position

56.8%

3/2/2026

10.78K→4.65K

Total

Net shares

−2.50K

Net value

-$723.64K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Indirect	3/2/2026	S · Sale	−200.00	$51.87	$10.37K	0.8%	25K	24.80K
Class A Common Stock Indirect	3/2/2026	S · Sale	−1K	$53.33	$53.33K	4.0%	24.80K	23.80K
Class A Common Stock Indirect	3/2/2026	S · Sale	−1.30K	$53.98	$70.17K	5.5%	23.80K	22.50K
Class A Common Stock Direct	3/2/2026	C · Conversion	+11K	—	—	236.4%	4.65K	15.65K
Class A Common Stock Direct	3/2/2026	S · Sale	−500.00	$52.02	$26.01K	3.2%	15.65K	15.15K
Class A Common Stock Direct	3/2/2026	S · Sale	−4.37K	$53.30	$232.97K	28.8%	15.15K	10.78K
Class A Common Stock Direct	3/2/2026	S · Sale	−6.13K	$53.97	$330.78K	56.8%	10.78K	4.65K
Total			−2.50K		-$723.64K

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class B Common Stock

11K shares

−11K

Strike price

4.38

Held after

132.95K

Exercisable

—

3/2/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

11K shares

+11K

Strike price

Held after

61K

Exercisable

—

3/2/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

11K shares

−11K

Strike price

Held after

50K

Exercisable

—

3/2/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock11K shares	3/2/2026	M · Option Exercise	−11K	4.38	—	132.95K
Class B Common Stock Direct	Class A Common Stock11K shares	3/2/2026	M · Option Exercise	+11K		—	61K
Class B Common Stock Direct	Class A Common Stock11K shares	3/2/2026	C · Conversion	−11K		—	50K

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

815.34K

Shares owned

815.34K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

815.34K

Owned

815.34K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock		—	—	815.34K	815.34K
Total					815.34K	815.34K