SEIFERT THOMAS J (Chief Financial Officer) sold 4.3% of their position (10K shares) of CLOUDFLARE, INC. on the open market

Open‑market sale worth $1.98M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 7 sales

SEIFERT THOMAS J

Filed: 4/17/2026ACC: 0001473289-26-000012

InsiderSEIFERT THOMAS JCIK 1473289

→

IssuerCLOUDFLARE, INC.CIK 1477333

Officer· Chief Financial Officer

Since Sep 2019

-12.94K

Net shares

Net seller

$2.51M

Total sold

Open market trades

0B · 7S

Total transactions

20K acquired · 32.94K disposed

Non-Derivative Transactions9

Class A Common Stock

Direct

F · Tax Withholding

−2.94K

Price / share

$178.65

Trade value

$525.95K

% of position

1.3%

4/15/2026

224.63K→221.68K

Class A Common Stock

Direct

C · Conversion

+10K

Price / share

—

Trade value

—

% of position

4.5%

4/17/2026

221.68K→231.68K

Class A Common Stock

Direct

S · Sale

−2.08K

Price / share

$195.09

Trade value

$405K

% of position

0.9%

4/17/2026

231.68K→229.60K

Class A Common Stock

Direct

S · Sale

−1.72K

Price / share

$196.04

Trade value

$337.97K

% of position

0.8%

4/17/2026

229.60K→227.88K

Class A Common Stock

Direct

S · Sale

−1K

Price / share

$196.97

Trade value

$196.97K

% of position

0.4%

4/17/2026

227.88K→226.88K

Class A Common Stock

Direct

S · Sale

−600.00

Price / share

$198.03

Trade value

$118.82K

% of position

0.3%

4/17/2026

226.88K→226.28K

Class A Common Stock

Direct

S · Sale

−1.48K

Price / share

$199.48

Trade value

$294.23K

% of position

0.7%

4/17/2026

226.28K→224.81K

Class A Common Stock

Direct

S · Sale

−2.73K

Price / share

$200.51

Trade value

$546.39K

% of position

1.2%

4/17/2026

224.81K→222.08K

Class A Common Stock

Direct

S · Sale

−400.00

Price / share

$200.95

Trade value

$80.38K

% of position

0.2%

4/17/2026

222.08K→221.68K

Total

Net shares

−2.94K

Net value

-$2.51M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	4/15/2026	F · Tax Withholding	−2.94K	$178.65	$525.95K	1.3%	224.63K	221.68K
Class A Common Stock Direct	4/17/2026	C · Conversion	+10K	—	—	4.5%	221.68K	231.68K
Class A Common Stock Direct	4/17/2026	S · Sale	−2.08K	$195.09	$405K	0.9%	231.68K	229.60K
Class A Common Stock Direct	4/17/2026	S · Sale	−1.72K	$196.04	$337.97K	0.8%	229.60K	227.88K
Class A Common Stock Direct	4/17/2026	S · Sale	−1K	$196.97	$196.97K	0.4%	227.88K	226.88K
Class A Common Stock Direct	4/17/2026	S · Sale	−600.00	$198.03	$118.82K	0.3%	226.88K	226.28K
Class A Common Stock Direct	4/17/2026	S · Sale	−1.48K	$199.48	$294.23K	0.7%	226.28K	224.81K
Class A Common Stock Direct	4/17/2026	S · Sale	−2.73K	$200.51	$546.39K	1.2%	224.81K	222.08K
Class A Common Stock Direct	4/17/2026	S · Sale	−400.00	$200.95	$80.38K	0.2%	222.08K	221.68K
Total			−2.94K		-$2.51M

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

50K

Exercisable

—

4/17/2026

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

10K shares

+10K

Strike price

Held after

18.93K

Exercisable

—

4/17/2026

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

10K shares

−10K

Strike price

Held after

8.93K

Exercisable

—

4/17/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Employee Stock Option (right to buy) Direct	Class B Common Stock10K shares	4/17/2026	M · Option Exercise	−10K	2.04	—	50K
Class B Common Stock Direct	Class A Common Stock10K shares	4/17/2026	M · Option Exercise	+10K		—	18.93K
Class B Common Stock Direct	Class A Common Stock10K shares	4/17/2026	C · Conversion	−10K		—	8.93K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

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

150K

Shares owned

150K

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

—

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	—	—	150K	150K
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
Total				288.30K	288.30K