Transaction · 0001473289-26-000025

SEIFERT THOMAS J

SEIFERT THOMAS J, CFO, reported an open-market or private sale at Cloudflare, Inc. involving 200.000000 shares for an estimated $62464.00. Reported holdings after the transaction were 110946.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCFO
NETCloudflare, Inc.
Filing timeAug 19
Trade dateAug 17, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$291.88
Pre-filing
1mo ago -4.9%1w ago +6.4%1d ago +8.2%
Returns since
7d -2.4%30d -2.2%90d -2.2%180d -2.2%1y -2.2%

NET price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
NET since 2026-08-19Filed 15 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001473289-26-000025
Class A Common Stock
Transaction date
Aug 17, 2026
Filed Aug 19, 2026, 09:35 PM · 2d delay
Shares
200 sh
$31.2k per share
Estimated value
-$6.24M
Computed from shares × price
Holdings after
110k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership Repeat Seller 10b5-1 Detected
0score
Filing-only score

0

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    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.

  2. F2

    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.

  3. F3

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $304.65 to $305.59, inclusive. The reporting person undertakes to pro…

  4. F4

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $305.73 to $306.70, inclusive.

  5. F5

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $306.79 to $307.78, inclusive.

  6. F6

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $307.83 to $308.77, inclusive.

  7. F7

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.90 to $309.27, inclusive.

  8. F8

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.88 to $312.76, inclusive.

  9. F9

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.61 to $314.61, inclusive.

  10. F10

    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.

  11. F11

    Shares subject to the option are fully vested and immediately exercisable.

  12. F12

    The shares are held of record by Center Court Partners Ltd., for which the reporting person serves as a partner.

  13. F13

    The shares are held of record by Center Court 2020 Trust 1 dated December 11, 2020, for which the reporting person serves as trustee.

  14. F14

    The shares are held of record by Center Court 2020 Trust 2 dated December 11, 2020, for which the reporting person serves as trustee.

  15. F15

    The shares are held of record by Center Court 2020 Trust 3 dated December 11, 2020, for which the reporting person serves as trustee.

Original filing · 0001473289-26-000025
Related transactions

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