SEC ownership of Cloudflare, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001477333.

Comparable stake leader

Matthew Prince

Disclosed value leader

Capital World Investors

Comparable rows

50/50

Latest evidence

22 Sep 2026

Top shareholders Insider holders Latest transactions
Public ticker
NET on NYSE
Parsed ownership sources
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Matthew Prince
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Matthew Prince
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
22 Sep 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001477333
Issuer location
San Francisco, CA

Ownership snapshot

Top shareholders of Cloudflare, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Matthew Prince
Disclosed value leader
Capital World Investors
Comparable rows
50/50
Latest evidence
22 Sep 2026
13D/G 3/4/5 13F Lead comparable stake: 7.7% 13D/G row: Matthew Prince Showing 1-8 of 50 holder rows.

Quick read

Matthew Prince leads the comparable SEC ownership view at 7.7%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Matthew Prince's linked filing trail.
Comparable ownership Top 5
Matthew Prince 7.7%
Capital World Investors 7.3%
MORGAN STANLEY 5.3%
VANGUARD CAPITAL MANAGEMENT LLC 5.2%
VANGUARD PORTFOLIO MANAGEMENT LLC 5.1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Matthew Prince
13D/G 3/4/5
CEO & Board Co-Chair, Director, 10%+ Owner
13D/G 3/4/5
7.7%
$5,192,636,655
26,338,507 shares
 $0 31 Dec 2025
Capital World Investors
13F 13D/G
Company
13F 13D/G
7.3%
from 13D/G
$5,966,507,037
24,325,692 shares
 — 30 Jun 2026
MORGAN STANLEY
13F 13D/G
Company
13F 13D/G
5.3%
from 13D/G
$3,742,563,026
15,258,327 shares
 — 30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC
13F 13D/G
Company · Vanguard Capital Management
13F 13D/G
5.2%
from 13D/G
$3,539,479,927
14,430,365 shares
 — 30 Jun 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
13F 13D/G
Company · Vanguard Portfolio Management
13F 13D/G
5.1%
from 13D/G
$4,125,542,394
16,819,726 shares
 — 30 Jun 2026
BAILLIE GIFFORD & CO
13D/G 13F
Company
13D/G 13F
4.6%
$3,580,743,136
14,598,594 shares
 -$545,834,584 30 Jun 2026
Carl Ledbetter
3/4/5
Director
3/4/5
0.28%
$313,339,585
893,514 shares
 -$32,432,288 22 Sep 2026
John Graham-Cumming
3/4/5
Director
3/4/5
0.16%
$154,362,117
494,909 shares
 -$6,362,345 10 Aug 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$734,667,548.

Buys
$0
Insiders: 0
Sells
$734,667,548
Insiders: 10
Net
-$734,667,548
Shares: -3,265,424
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 3,265,424
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 666,912 $0 $199,168,488 -$199,168,488
3-6 0 823,009 $0 $182,861,785 -$182,861,785
6-9 0 843,138 $0 $163,571,890 -$163,571,890
9-12 0 932,365 $0 $189,065,385 -$189,065,385

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-17 of 17 reporting-owner rows connected to Cloudflare, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
17
Largest Forms 3/4/5 holder
Matthew Prince
Net 12M change
-$734,667,547
Latest report
05 Oct 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Matthew Prince CEO & Board Co-Chair, Director, 10%+ Owner $774,432,385 -$373,656,762 -33% Mixed 15 Aug 2026
Michelle Zatlyn President and Board Co-Chair, Director $416,538,420 -$247,191,689 -37% Mixed 05 Oct 2026
Carl Ledbetter Director $313,339,585 -$32,432,288 -9.4% Mixed 22 Sep 2026
John Graham-Cumming Director $154,362,117 -$6,362,345 -4% Filing P/S 10 Aug 2026
Thomas J. Seifert Chief Financial Officer $75,457,217 -$55,866,025 -43% Mixed 17 Sep 2026
Alissa Michelle Starzak Chief Legal Officer $34,149,143 -$5,317,896 -13% Filing P/S 17 Aug 2026
Douglas James Kramer Chief Legal Officer $22,013,195 -$3,672,539 -14% Mixed 15 Feb 2026
Janel Riley Chief Accounting Officer $12,834,699 -$8,776,674 -41% Filing P/S 17 Aug 2026
Scott D. Sandell Director $9,982,316 Mixed 30 Jun 2026
Mark Anderson Director $9,011,096 Mixed 15 Aug 2023
Katrin Suder Director $7,897,044 -$879,153 -10% Mixed 30 Jun 2026
Mark J. Hawkins Director $2,952,931 -$512,176 -15% Filing P/S 03 Aug 2026
Paul D. Underwood Chief Accounting Officer $2,367,426 Mixed 15 May 2023
Karim Lakhani Director $1,557,454 Mixed 30 Jun 2026
Stacey Cunningham Director $869,723 Mixed 30 Jun 2026
Maria S. Eitel Director $525,132 Filing P/S 01 Nov 2024
Stanley J. Meresman Director $207,620 Mixed 11 May 2022

Recent insider transactions for Cloudflare, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $11,494,572 $348.29 -33,003 69,775 07 Oct 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 07 Oct 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 07 Oct 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 07 Oct 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.57% -33,003 891,081 07 Oct 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $12,104,181 $366.76 -33,003 69,775 06 Oct 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 06 Oct 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 06 Oct 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 06 Oct 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.45% -33,003 924,084 06 Oct 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $11,636,907 $352.60 -33,003 69,775 05 Oct 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 05 Oct 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 05 Oct 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 05 Oct 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.33% -33,003 957,087 05 Oct 2026 Direct
Carl Ledbetter NET Class A Common Stock Sale -0.57% $1,765,750 $353.15 -5,000 873,073 22 Sep 2026 See footnote
Thomas J. Seifert NET Class A Common Stock Sale -8.48% $3,324,617 $332.46 -10,000 107,902 17 Sep 2026 Direct
Thomas J. Seifert NET Class A Common Stock Conversion of derivative security 9.27% 10,000 117,902 17 Sep 2026 Direct
Thomas J. Seifert NET Class B Common Stock Conversion of derivative security -52.8% -10,000 8,925 17 Sep 2026 Direct
Thomas J. Seifert NET Class B Common Stock Options Exercise 112% 10,000 18,925 17 Sep 2026 Direct
Thomas J. Seifert NET Employee Stock Option (right to buy) Options Exercise -100% -10,000 0 17 Sep 2026 Direct
Thomas J. Seifert NET Class A Common Stock Tax liability -2.66% -2,944 107,902 15 Sep 2026 Direct
Carl Ledbetter NET Class A Common Stock Sale -0.57% $1,561,080 $312.22 -5,000 878,073 14 Sep 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,156,072 $277.43 -33,003 69,775 08 Sep 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 08 Sep 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 08 Sep 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 08 Sep 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.23% -33,003 990,090 08 Sep 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,295,858 $281.67 -33,003 69,775 04 Sep 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 04 Sep 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 04 Sep 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 04 Sep 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.13% -33,003 1,023,093 04 Sep 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,205,159 $278.92 -33,003 69,775 03 Sep 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 03 Sep 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 03 Sep 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 03 Sep 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -3.03% -33,003 1,056,096 03 Sep 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,156,123 $277.43 -33,003 69,775 21 Aug 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 21 Aug 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 21 Aug 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 21 Aug 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -2.94% -33,003 1,089,099 21 Aug 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,407,947 $285.06 -33,003 69,775 20 Aug 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 20 Aug 2026 See footnote
Michelle Zatlyn NET Class B Common Stock Conversion of derivative security -100% -33,003 0 20 Aug 2026 Direct
Michelle Zatlyn NET Class B Common Stock Options Exercise 33,003 33,003 20 Aug 2026 Direct
Michelle Zatlyn NET Employee Stock Option (right to buy) Options Exercise -2.86% -33,003 1,122,102 20 Aug 2026 Direct
Michelle Zatlyn NET Class A Common Stock Sale -32.1% $9,723,613 $294.63 -33,003 69,775 19 Aug 2026 See footnote
Michelle Zatlyn NET Class A Common Stock Conversion of derivative security 47.3% 33,003 102,778 19 Aug 2026 See footnote
* marks a reported price that did not pass the local price check.
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