Thomas J. Seifert - 15 Sep 2026 Form 4 Insider Report for Cloudflare, Inc. (NET)

Reporting relationship: Chief Financial Officer
Issuer ticker: NET
Reported as of: 15 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Sep 2026, 19:07:25 UTC
Prior SEC filing: 19 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Charlotte Bowe, by power of attorney

Key filing fact

Thomas J. Seifert filed Form 4 for Cloudflare, Inc. (NET) on 15 Sep 2026.

Key facts

This page summarizes Thomas J. Seifert's Form 4 filing for Cloudflare, Inc. (NET).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 15 Sep 2026, 19:07.

Change

Previous filing in this sequence was filed on 19 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001473289 Primary reporting owner

SEIFERT THOMAS J

Relationship: Chief Financial Officer
Address: C/O CLOUDFLARE, INC., 405 COMAL STREET, AUSTIN
Signature: /s/ Charlotte Bowe, by power of attorney
Signature date: 15 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NET transaction

Class A Common Stock

Tax liability

Transaction value
Shares: -2,944
Change %: -2.7%
Price: $327.23^*
Shares after: 107,902
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F1

NET holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 92,337
Date: 15 Sep 2026
Ownership: See footnote
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.

Footnote F2

The shares are held of record by the 2026 Seifert Grantor Retained Annuity Trust dated May 27, 2026, for which the reporting person serves as trustee.