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Cloudflare (NYSE: NET) CFO sells 10,000 shares in Rule 10b5-1 trades

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Form Type
4

Rhea-AI Filing Summary

Cloudflare, Inc. Chief Financial Officer Thomas J. Seifert reported multiple stock transactions. On 2026-07-17 he sold an aggregate of 10,000 shares of Class A Common Stock in multiple transactions at weighted-average prices, with detailed price ranges provided in the footnotes. These sales were effected pursuant to a Rule 10b5-1 trading plan adopted on November 20, 2025.

On 2026-07-15, 2,943 Class A shares were disposed of to satisfy tax liabilities arising from RSU vesting. The filing also reports derivative activity, including the exercise or conversion of derivatives covering 30,000 underlying shares, such as 10,000 Employee Stock Options with a $2.0400 exercise price and the conversion of 10,000 shares of Class B Common Stock into 10,000 shares of Class A Common Stock.

Positive

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Insider SEIFERT THOMAS J
Role Chief Financial Officer
Sold 10,000 shs ($2.77M)
Type Security Shares Price Value
Exercise Employee Stock Option (right to buy) 10,000 $0.00 --
Exercise Class B Common Stock 10,000 $0.00 --
Conversion Class B Common Stock 10,000 $0.00 --
Conversion Class A Common Stock 10,000 -- --
Sale Class A Common Stock 200 $266.19 $53K
Sale Class A Common Stock 100 $267.76 $27K
Sale Class A Common Stock 300 $270.5033 $81K
Sale Class A Common Stock 500 $274.604 $137K
Sale Class A Common Stock 1,559 $275.7866 $430K
Sale Class A Common Stock 1,741 $276.633 $482K
Sale Class A Common Stock 3,299 $277.6769 $916K
Sale Class A Common Stock 1,201 $278.7557 $335K
Sale Class A Common Stock 800 $279.9109 $224K
Sale Class A Common Stock 300 $281.2933 $84K
Tax Withholding Class A Common Stock 2,943 $281.75 $829K
holding Class B Common Stock -- -- --
holding Class B Common Stock -- -- --
holding Class B Common Stock -- -- --
holding Class B Common Stock -- -- --
holding Class A Common Stock -- -- --
Holdings After Transaction: Employee Stock Option (right to buy) — 20,000 shares (Direct); Class B Common Stock — 18,925 shares (Direct); Class A Common Stock — 123,790 shares (Direct); Class B Common Stock — 150,000 shares (Indirect, See footnote); Class A Common Stock — 92,337 shares (Indirect, See footnote)
Footnotes (1)
  1. The shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. Each share of Class B Common Stock is convertible at any time into Class A Common Stock on a one-to-one basis at the reporting person's election and has no expiration date. 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 $270.20 to $271.09, 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 within the ranges set forth in footnotes (4) through (11) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.16 to $275.00, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.16 to $276.14, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $276.16 to $276.99, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $277.24 to $278.17, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $278.37 to $279.32, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $279.51 to $280.38, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $280.72 to $281.67, inclusive. 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. Shares subject to the option are fully vested and immediately exercisable. The shares are held of record by Center Court Partners Ltd., for which the reporting person serves as a partner. The shares are held of record by Center Court 2020 Trust 1 dated December 11, 2020, for which the reporting person serves as trustee. The shares are held of record by Center Court 2020 Trust 2 dated December 11, 2020, for which the reporting person serves as trustee. The shares are held of record by Center Court 2020 Trust 3 dated December 11, 2020, for which the reporting person serves as trustee.
Class A shares sold 10,000 shares Aggregate Class A Common Stock sold on 2026-07-17 in multiple transactions
Tax-withholding shares 2,943 shares Class A shares withheld on 2026-07-15 to satisfy tax liability on RSU vesting at $281.75
Derivative exercises and conversions 30,000 shares Total underlying shares in derivative exercises/conversions (codes C and M) reported in this filing
Employee Stock Option exercise price $2.0400 per share Exercise price for 10,000 Employee Stock Options expiring on 2027-07-25
Indirect Class A holdings (GRAT) 92,337 shares Class A shares held by the 2026 Seifert Grantor Retained Annuity Trust as of 2026-07-15
Indirect Class B holdings (partnership) 150,000 shares Class B shares held by Center Court Partners Ltd., each convertible 1:1 into Class A
Rule 10b5-1 trading plan financial
"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Grantor Retained Annuity Trust financial
"The shares are held of record by the 2026 Seifert Grantor Retained Annuity Trust dated May 27, 2026"
A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.
restricted stock units financial
"tax liability in connection with the vesting of restricted stock units, or RSUs"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
weighted average price financial
"The price reported in Column 4 is a weighted average price"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Employee Stock Option financial
"security_title: Employee Stock Option (right to buy)"
An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider stock sales did Cloudflare (NET) disclose in this Form 4?

Cloudflare reported that CFO Thomas J. Seifert sold 10,000 shares of Class A Common Stock on 2026-07-17. The shares were sold in multiple transactions at weighted-average prices, with specific price ranges detailed across footnotes (4) through (11).

Were the Cloudflare (NET) CFO’s share sales made under a Rule 10b5-1 plan?

Yes. Footnote F3 states the sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Thomas J. Seifert on November 20, 2025. The filing’s Rule 10b5-1 checkbox is also marked, confirming trades were pre-arranged under that plan.

How many Cloudflare (NET) shares were withheld for taxes in this filing?

The company reported that 2,943 shares of Class A Common Stock were withheld on 2026-07-15. Footnote F1 explains these shares covered the reporting person’s tax liability from the vesting of restricted stock units at a price of $281.75 per share.

What option or derivative exercises involving Cloudflare (NET) stock were reported?

On 2026-07-17, derivatives covering 30,000 underlying shares were exercised or converted. This includes 10,000 fully vested Employee Stock Options with a $2.0400 exercise price, and the conversion of 10,000 Class B shares into 10,000 Class A shares.

What indirect shareholdings of Cloudflare (NET) does the CFO report?

The filing lists indirect holdings through several entities. These include 92,337 Class A shares in a 2026 Grantor Retained Annuity Trust and Class B holdings such as 150,000 shares via Center Court Partners Ltd., each Class B share being convertible 1:1 into Class A.

How are the Cloudflare (NET) CFO’s sale prices described in the filing?

Each reported Class A sale price is a weighted average price. Footnotes F4–F11 state the shares were sold in multiple trades within specified price ranges, and the reporting person will provide full breakdowns of individual trade prices upon request.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
SEIFERT THOMAS J

(Last)(First)(Middle)
C/O CLOUDFLARE, INC.
405 COMAL STREET

(Street)
AUSTIN TEXAS 78702

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Cloudflare, Inc. [ NET ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock07/15/2026F(1)2,943D$281.75113,790D
Class A Common Stock07/17/2026C10,000A(2)123,790D
Class A Common Stock07/17/2026S(3)200D$266.19123,590D
Class A Common Stock07/17/2026S(3)100D$267.76123,490D
Class A Common Stock07/17/2026S(3)300D$270.5033(4)123,190D
Class A Common Stock07/17/2026S(3)500D$274.604(5)122,690D
Class A Common Stock07/17/2026S(3)1,559D$275.7866(6)121,131D
Class A Common Stock07/17/2026S(3)1,741D$276.633(7)119,390D
Class A Common Stock07/17/2026S(3)3,299D$277.6769(8)116,091D
Class A Common Stock07/17/2026S(3)1,201D$278.7557(9)114,890D
Class A Common Stock07/17/2026S(3)800D$279.9109(10)114,090D
Class A Common Stock07/17/2026S(3)300D$281.2933(11)113,790D
Class A Common Stock92,337ISee footnote(12)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy)$2.0407/17/2026M10,000 (13)07/25/2027Class B Common Stock(2)10,000$020,000D
Class B Common Stock(2)07/17/2026M10,000 (2) (2)Class A Common Stock10,000$018,925D
Class B Common Stock(2)07/17/2026C10,000 (2) (2)Class A Common Stock10,000$08,925D
Class B Common Stock(2) (2) (2)Class A Common Stock150,000150,000ISee footnote(14)
Class B Common Stock(2) (2) (2)Class A Common Stock46,10046,100ISee footnote(15)
Class B Common Stock(2) (2) (2)Class A Common Stock46,10046,100ISee footnote(16)
Class B Common Stock(2) (2) (2)Class A Common Stock46,10046,100ISee footnote(17)
Explanation of Responses:
1. The shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.
2. Each share of Class B Common Stock is convertible at any time into Class A Common Stock on a one-to-one basis at the reporting person's election and has no expiration date.
3. 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.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $270.20 to $271.09, 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 within the ranges set forth in footnotes (4) through (11) to this Form 4.
5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.16 to $275.00, inclusive.
6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.16 to $276.14, inclusive.
7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $276.16 to $276.99, inclusive.
8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $277.24 to $278.17, inclusive.
9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $278.37 to $279.32, inclusive.
10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $279.51 to $280.38, inclusive.
11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $280.72 to $281.67, inclusive.
12. 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.
13. Shares subject to the option are fully vested and immediately exercisable.
14. The shares are held of record by Center Court Partners Ltd., for which the reporting person serves as a partner.
15. The shares are held of record by Center Court 2020 Trust 1 dated December 11, 2020, for which the reporting person serves as trustee.
16. The shares are held of record by Center Court 2020 Trust 2 dated December 11, 2020, for which the reporting person serves as trustee.
17. The shares are held of record by Center Court 2020 Trust 3 dated December 11, 2020, for which the reporting person serves as trustee.
Remarks:
/s/ Charlotte Bowe, by power of attorney07/17/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)