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

Open‑market sale worth $1.20M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 9 sales

THOMPSON JOHN WENDELL

Filed: 9/4/2026ACC: 0001207433-26-000020

InsiderTHOMPSON JOHN WENDELLCIK 1207433

→

IssuerRUBRIK, INC.CIK 1943896

Director

Since Mar 2026

-13.50K

Net shares

Net seller

$1.20M

Total sold

Open market trades

0B · 9S

Total transactions

22K acquired · 35.50K disposed

Non-Derivative Transactions10

Class A Common Stock

Indirect

S · Sale

−1.60K

Price / share

$88.58

Trade value

$141.73K

% of position

16.0%

9/1/2026

10K→8.40K

Class A Common Stock

Indirect

S · Sale

−600.00

Price / share

$89.18

Trade value

$53.51K

% of position

7.1%

9/1/2026

8.40K→7.80K

Class A Common Stock

Indirect

S · Sale

−100.00

Price / share

$90.30

Trade value

$9.03K

% of position

1.3%

9/1/2026

7.80K→7.70K

Class A Common Stock

Indirect

S · Sale

−200.00

Price / share

$91.66

Trade value

$18.33K

% of position

2.6%

9/1/2026

7.70K→7.50K

Class A Common Stock

Direct

C · Conversion

+11K

Price / share

—

Trade value

—

% of position

131.5%

9/1/2026

8.36K→19.36K

Class A Common Stock

Direct

S · Sale

−4.60K

Price / share

$88.34

Trade value

$406.36K

% of position

23.8%

9/1/2026

19.36K→14.76K

Class A Common Stock

Direct

S · Sale

−4.70K

Price / share

$89.02

Trade value

$418.39K

% of position

31.8%

9/1/2026

14.76K→10.06K

Class A Common Stock

Direct

S · Sale

−600.00

Price / share

$90.24

Trade value

$54.14K

% of position

6.0%

9/1/2026

10.06K→9.46K

Class A Common Stock

Direct

S · Sale

−900.00

Price / share

$91.08

Trade value

$81.97K

% of position

9.5%

9/1/2026

9.46K→8.56K

Class A Common Stock

Direct

S · Sale

−200.00

Price / share

$92.37

Trade value

$18.47K

% of position

2.3%

9/1/2026

8.56K→8.36K

Total

Net shares

−2.50K

Net value

-$1.20M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Indirect	9/1/2026	S · Sale	−1.60K	$88.58	$141.73K	16.0%	10K	8.40K
Class A Common Stock Indirect	9/1/2026	S · Sale	−600.00	$89.18	$53.51K	7.1%	8.40K	7.80K
Class A Common Stock Indirect	9/1/2026	S · Sale	−100.00	$90.30	$9.03K	1.3%	7.80K	7.70K
Class A Common Stock Indirect	9/1/2026	S · Sale	−200.00	$91.66	$18.33K	2.6%	7.70K	7.50K
Class A Common Stock Direct	9/1/2026	C · Conversion	+11K	—	—	131.5%	8.36K	19.36K
Class A Common Stock Direct	9/1/2026	S · Sale	−4.60K	$88.34	$406.36K	23.8%	19.36K	14.76K
Class A Common Stock Direct	9/1/2026	S · Sale	−4.70K	$89.02	$418.39K	31.8%	14.76K	10.06K
Class A Common Stock Direct	9/1/2026	S · Sale	−600.00	$90.24	$54.14K	6.0%	10.06K	9.46K
Class A Common Stock Direct	9/1/2026	S · Sale	−900.00	$91.08	$81.97K	9.5%	9.46K	8.56K
Class A Common Stock Direct	9/1/2026	S · Sale	−200.00	$92.37	$18.47K	2.3%	8.56K	8.36K
Total			−2.50K		-$1.20M

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

66.95K

Exercisable

—

9/1/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

11K shares

+11K

Strike price

Held after

61K

Exercisable

—

9/1/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

11K shares

−11K

Strike price

Held after

50K

Exercisable

—

9/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class B Common Stock11K shares	9/1/2026	M · Option Exercise	−11K	4.38	—	66.95K
Class B Common Stock Direct	Class A Common Stock11K shares	9/1/2026	M · Option Exercise	+11K		—	61K
Class B Common Stock Direct	Class A Common Stock11K shares	9/1/2026	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