SEIFERT THOMAS J (Chief Financial Officer) sold 8.3% of their position (10K shares) of CLOUDFLARE, INC. on the open market

Open‑market sale worth $3.07M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 7 sales

SEIFERT THOMAS J

Filed: 8/19/2026ACC: 0001473289-26-000025

InsiderSEIFERT THOMAS JCIK 1473289

→

IssuerCLOUDFLARE, INC.CIK 1477333

Officer· Chief Financial Officer

Since Sep 2019

-10K

Net shares

Net seller

$3.07M

Total sold

Open market trades

0B · 7S

Total transactions

20K acquired · 30K disposed

Non-Derivative Transactions8

Class A Common Stock

Direct

C · Conversion

+10K

Price / share

—

Trade value

—

% of position

9.0%

8/17/2026

110.85K→120.85K

Class A Common Stock

Direct

S · Sale

−900.00

Price / share

$305.25

Trade value

$274.72K

% of position

0.7%

8/17/2026

120.85K→119.95K

Class A Common Stock

Direct

S · Sale

−2.94K

Price / share

$306.24

Trade value

$901.58K

% of position

2.5%

8/17/2026

119.95K→117K

Class A Common Stock

Direct

S · Sale

−2.46K

Price / share

$307.29

Trade value

$754.71K

% of position

2.1%

8/17/2026

117K→114.55K

Class A Common Stock

Direct

S · Sale

−3.10K

Price / share

$308.23

Trade value

$955.51K

% of position

2.7%

8/17/2026

114.55K→111.45K

Class A Common Stock

Direct

S · Sale

−300.00

Price / share

$309.07

Trade value

$92.72K

% of position

0.3%

8/17/2026

111.45K→111.15K

Class A Common Stock

Direct

S · Sale

−200.00

Price / share

$312.32

Trade value

$62.46K

% of position

0.2%

8/17/2026

111.15K→110.95K

Class A Common Stock

Direct

S · Sale

−100.00

Price / share

$314.61

Trade value

$31.46K

% of position

0.1%

8/17/2026

110.95K→110.85K

Total

Net shares

+0.00

Net value

-$3.07M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	8/17/2026	C · Conversion	+10K	—	—	9.0%	110.85K	120.85K
Class A Common Stock Direct	8/17/2026	S · Sale	−900.00	$305.25	$274.72K	0.7%	120.85K	119.95K
Class A Common Stock Direct	8/17/2026	S · Sale	−2.94K	$306.24	$901.58K	2.5%	119.95K	117K
Class A Common Stock Direct	8/17/2026	S · Sale	−2.46K	$307.29	$754.71K	2.1%	117K	114.55K
Class A Common Stock Direct	8/17/2026	S · Sale	−3.10K	$308.23	$955.51K	2.7%	114.55K	111.45K
Class A Common Stock Direct	8/17/2026	S · Sale	−300.00	$309.07	$92.72K	0.3%	111.45K	111.15K
Class A Common Stock Direct	8/17/2026	S · Sale	−200.00	$312.32	$62.46K	0.2%	111.15K	110.95K
Class A Common Stock Direct	8/17/2026	S · Sale	−100.00	$314.61	$31.46K	0.1%	110.95K	110.85K
Total			+0.00		-$3.07M

Derivative Transactions3

Employee Stock Option (right to buy)

Direct

M · Option Exercise

Converts to

Class B Common Stock

10K shares

−10K

Strike price

2.04

Held after

10K

Exercisable

—

8/17/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

10K shares

+10K

Strike price

Held after

18.93K

Exercisable

—

8/17/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

10K shares

−10K

Strike price

Held after

8.93K

Exercisable

—

8/17/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Employee Stock Option (right to buy) Direct	Class B Common Stock10K shares	8/17/2026	M · Option Exercise	−10K	2.04	—	10K
Class B Common Stock Direct	Class A Common Stock10K shares	8/17/2026	M · Option Exercise	+10K		—	18.93K
Class B Common Stock Direct	Class A Common Stock10K shares	8/17/2026	C · Conversion	−10K		—	8.93K

Non-Derivative Holdings (Post-Transaction)1

Class A Common Stock

Indirect

Shares owned92.34K

Total

92.34K indirect92.34K

Security Title	Shares Owned	Ownership Type
Class A Common Stock	92.34K	Indirect
Total	92.34K	92.34K indirect

Derivative Holdings (Post-Transaction)4

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

46.10K

Shares owned

46.10K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

46.10K

Shares owned

46.10K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

46.10K

Shares owned

46.10K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

150K

Shares owned

150K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

288.30K

Owned

288.30K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock	—	—	46.10K	46.10K
Class B Common Stock Indirect	Class A Common Stock	—	—	46.10K	46.10K
Class B Common Stock Indirect	Class A Common Stock	—	—	46.10K	46.10K
Class B Common Stock Indirect	Class A Common Stock	—	—	150K	150K
Total				288.30K	288.30K