THOMPSON JOHN WENDELL sold 61.8% of their position (13.50K shares) of RUBRIK, INC. on the open market

Open‑market sale worth $1.56M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales

THOMPSON JOHN WENDELL

Filed: 10/2/2026ACC: 0001207433-26-000022

InsiderTHOMPSON JOHN WENDELLCIK 1207433

→

IssuerRUBRIK, INC.CIK 1943896

Director

Since Mar 2026

-13.50K

Net shares

Net seller

$1.56M

Total sold

Open market trades

0B · 6S

Total transactions

22K acquired · 35.50K disposed

Non-Derivative Transactions7

Class A Common Stock

Indirect

S · Sale

−300.00

Price / share

$114.68

Trade value

$34.40K

% of position

4.0%

10/1/2026

7.50K→7.20K

Class A Common Stock

Indirect

S · Sale

−1.70K

Price / share

$115.62

Trade value

$196.55K

% of position

23.6%

10/1/2026

7.20K→5.50K

Class A Common Stock

Indirect

S · Sale

−500.00

Price / share

$116.47

Trade value

$58.23K

% of position

9.1%

10/1/2026

5.50K→5K

Class A Common Stock

Direct

C · Conversion

+11K

Price / share

—

Trade value

—

% of position

131.5%

10/1/2026

8.36K→19.36K

Class A Common Stock

Direct

S · Sale

−896.00

Price / share

$114.71

Trade value

$102.78K

% of position

4.6%

10/1/2026

19.36K→18.47K

Class A Common Stock

Direct

S · Sale

−7.71K

Price / share

$115.57

Trade value

$891.04K

% of position

41.8%

10/1/2026

18.47K→10.76K

Class A Common Stock

Direct

S · Sale

−2.39K

Price / share

$116.46

Trade value

$278.81K

% of position

22.3%

10/1/2026

10.76K→8.36K

Total

Net shares

−2.50K

Net value

-$1.56M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Indirect	10/1/2026	S · Sale	−300.00	$114.68	$34.40K	4.0%	7.50K	7.20K
Class A Common Stock Indirect	10/1/2026	S · Sale	−1.70K	$115.62	$196.55K	23.6%	7.20K	5.50K
Class A Common Stock Indirect	10/1/2026	S · Sale	−500.00	$116.47	$58.23K	9.1%	5.50K	5K
Class A Common Stock Direct	10/1/2026	C · Conversion	+11K	—	—	131.5%	8.36K	19.36K
Class A Common Stock Direct	10/1/2026	S · Sale	−896.00	$114.71	$102.78K	4.6%	19.36K	18.47K
Class A Common Stock Direct	10/1/2026	S · Sale	−7.71K	$115.57	$891.04K	41.8%	18.47K	10.76K
Class A Common Stock Direct	10/1/2026	S · Sale	−2.39K	$116.46	$278.81K	22.3%	10.76K	8.36K
Total			−2.50K		-$1.56M

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

55.95K

Exercisable

—

10/1/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

11K shares

+11K

Strike price

Held after

61K

Exercisable

—

10/1/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

11K shares

−11K

Strike price

Held after

50K

Exercisable

—

10/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock11K shares	10/1/2026	M · Option Exercise	−11K	4.38	—	55.95K
Class B Common Stock Direct	Class A Common Stock11K shares	10/1/2026	M · Option Exercise	+11K		—	61K
Class B Common Stock Direct	Class A Common Stock11K shares	10/1/2026	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