NET Filing
4Filing Date: Aug 6, 2026

Cloudflare, Inc. (NET) · Insider Trading (Form 4) SEC Filing

Statement of Changes in Beneficial Ownership

descriptionView SEC Filing
ACC: 0001473289-26-000021open_in_new
Total Value$18.98M
Trades5
Insiders1

Transaction Details

SEIFERT THOMAS J
Chief Financial Officer·Direct
Sell · Dispose
Class A Common Stock
Shares-1.14K
Price$301.00
Total Value$342.8K
Shares Owned After113.79K
Transaction DateAug 4, 2026
10b5-1
Footnotes ▸

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025.

SEIFERT THOMAS J
Chief Financial Officer·Direct
Exercise · Acquire
Class A Common Stock
Shares+55.00K
Price$44.72
Total Value$2.46M
Shares Owned After168.79K
Transaction DateAug 4, 2026
10b5-1
SEIFERT THOMAS J
Chief Financial Officer·Direct
Exercise · Dispose
Performance Stock Option (right to buy)Derivative
Shares-55.00K
Price$0.00
Total Value$0
Shares Owned After500.00K
Transaction DateAug 4, 2026
ExpiresFeb 13, 2032
10b5-1
Footnotes ▸

The shares subject to the Performance Stock Option are comprised of nine separate tranches that become eligible to vest upon achievement of certain stock price targets (the "Stock Price Goals"). Upon satisfaction of a Stock Price Goal, 1/6 of the shares subject to the applicable tranche vests and becomes exercisable on each Issuer quarterly vesting date (2/15, 5/15, 8/15 or 11/15) occurring on or after the date of certification of achievement of the applicable Stock Price Goal for such tranche. As of the date of this report, five of the nine stock price goals have been satisfied and the underlying shares vest as set forth above. The remaining four tranches, representing 333,000 shares subject to the Performance Stock Option, become eligible to vest upon achievement of the applicable Stock Price Goal.

SEIFERT THOMAS J
Chief Financial Officer·Direct
Sell · Dispose
Class A Common Stock
Shares-53.86K
Price$300.28
Total Value$16.17M
Shares Owned After114.93K
Transaction DateAug 4, 2026
10b5-1
Footnotes ▸

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.00 to $300.99, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

SEIFERT THOMAS J
Chief Financial Officer·Indirect · See footnote
Class A Common Stock
Shares0
Price-
Total Value$0
Shares Owned After92.34K
10b5-1Holding Only
Footnotes ▸

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.

Post-Transaction Holdings

SEIFERT THOMAS J
SecuritySharesChange
Class A Common Stock206.13K-
Performance Stock Option (right to buy)500.00K-55.00K (-9.91%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-04 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Cloudflare, Inc. (NET) CIK: 0001477333 --- Reporting Owner --- Name: SEIFERT THOMAS J CIK: 0001473289 Role: Officer (Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-08-04 | Code: M (Exercise of derivative) Shares: +55,000 | Price: $44.72 Total Value: $2,459,600.00 Shares Owned After: 168,790 | Ownership: D (Direct) [Transaction #2] Security: Class A Common Stock Date: 2026-08-04 | Code: S (Open market sale) Shares: -53,861 | Price: $300.28 Total Value: $16,173,445.71 Shares Owned After: 114,929 | Ownership: D (Direct) Footnotes: [F1] The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.00 to $300.99, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. [Transaction #3] Security: Class A Common Stock Date: 2026-08-04 | Code: S (Open market sale) Shares: -1,139 | Price: $301.00 Total Value: $342,839.00 Shares Owned After: 113,790 | Ownership: D (Direct) Footnotes: [F1] The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025. --- Derivative Transactions --- [Transaction #1] Security: Performance Stock Option (right to buy) Date: 2026-08-04 | Code: M (Exercise of derivative) Shares: -55,000 | Price: $0.00 Exercisable: N/A | Expires: 2032-02-13 Shares Owned After: 500,000 | Ownership: D (Direct) Footnotes: [F4] The shares subject to the Performance Stock Option are comprised of nine separate tranches that become eligible to vest upon achievement of certain stock price targets (the "Stock Price Goals"). Upon satisfaction of a Stock Price Goal, 1/6 of the shares subject to the applicable tranche vests and becomes exercisable on each Issuer quarterly vesting date (2/15, 5/15, 8/15 or 11/15) occurring on or after the date of certification of achievement of the applicable Stock Price Goal for such tranche. As of the date of this report, five of the nine stock price goals have been satisfied and the underlying shares vest as set forth above. The remaining four tranches, representing 333,000 shares subject to the Performance Stock Option, become eligible to vest upon achievement of the applicable Stock Price Goal. --- Holdings --- [Holding #1] Security: Class A Common Stock Ownership: I (Indirect) Footnotes: [F3] 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. --- Footnotes (Complete Index) --- F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025. F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $300.00 to $300.99, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. F3: 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. F4: The shares subject to the Performance Stock Option are comprised of nine separate tranches that become eligible to vest upon achievement of certain stock price targets (the "Stock Price Goals"). Upon satisfaction of a Stock Price Goal, 1/6 of the shares subject to the applicable tranche vests and becomes exercisable on each Issuer quarterly vesting date (2/15, 5/15, 8/15 or 11/15) occurring on or after the date of certification of achievement of the applicable Stock Price Goal for such tranche. As of the date of this report, five of the nine stock price goals have been satisfied and the underlying shares vest as set forth above. The remaining four tranches, representing 333,000 shares subject to the Performance Stock Option, become eligible to vest upon achievement of the applicable Stock Price Goal. --- Signature --- /s/ /s/ Charlotte Bowe, by power of attorney (2026-08-06)

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