Comparable stake leader
Matthew Prince
SEC ownership of Cloudflare, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001477333.
Disclosed value leader
Capital World Investors
Comparable rows
6/50
Latest evidence
19 Oct 2026
- 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
- Comparable ownership rows
-
6 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
-
19 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001477333
- Issuer location
- San Francisco, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
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
6/50
Latest evidence
19 Oct 2026
13D/G
3/4/5
13F
Lead comparable stake: 7.7%
44 rows are not safely comparable across share classes.
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%.
6 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
|
7.7%
Reported 13D/G
· 31 Dec 2025
|
$5,192,636,655
26,338,507 shares
|
$0 | 31 Dec 2025 |
| Capital World Investors |
13F
13D/G
Company
|
7.3%
Reported 13D/G
· 31 Mar 2026
|
$5,966,507,037
24,325,692 shares
|
— | 30 Jun 2026 |
| MORGAN STANLEY |
13F
13D/G
Company
|
5.3%
Reported 13D/G
· 31 Dec 2025
|
$3,742,563,026
15,258,327 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
5.2%
Reported 13D/G
· 31 Mar 2026
|
$3,539,479,927
14,430,365 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.1%
Reported 13D/G
· 31 Mar 2026
|
$4,125,542,394
16,819,726 shares
|
— | 30 Jun 2026 |
| BAILLIE GIFFORD & CO |
13D/G
13F
Company
|
4.6%
Reported 13D/G
· 30 Jun 2026
|
$3,580,743,136
14,598,594 shares
|
-$545,834,584 | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$5,297,780,080
21,598,907 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13F
Company
|
—
denominator unverified
|
$3,104,134,032
12,655,471 shares
|
— | 30 Jun 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: -$700,021,980.
Buys
$0
Insiders: 0
Sells
$700,021,980
Insiders: 10
Net
-$700,021,980
Shares: -3,098,252
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 3,098,252
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 575,348 | $0 | $174,247,053 | -$174,247,053 |
| 3-6 | 0 | 835,159 | $0 | $193,154,244 | -$193,154,244 |
| 6-9 | 0 | 838,129 | $0 | $164,012,183 | -$164,012,183 |
| 9-12 | 0 | 849,616 | $0 | $168,608,499 | -$168,608,499 |
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
-$700.02M
Full value: -$700,021,980 · USD · 12-month changeLatest report
19 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 | -$339,580,148 | -30% | 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 | $272,378,907 | -$30,794,473 | -10% | Mixed | 19 Oct 2026 |
| John Graham-Cumming | Director | $154,362,117 | -$5,804,516 | -3.6% | Filing P/S | 10 Aug 2026 |
| Thomas J. Seifert | Chief Financial Officer | $80,488,464 | -$57,492,716 | -42% | Mixed | 15 Oct 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Carl Ledbetter | NET | Class A Common Stock | Sale | -0.57% | -$1,521,994 | $304.40 | -5,000 | 868,073 | 19 Oct 2026 | See footnote |
| Thomas J. Seifert | NET | Class A Common Stock | Sale | -10.6% | -$3,744,827 | $299.59 | -12,500 | 104,958 | 19 Oct 2026 | Direct |
| Thomas J. Seifert | NET | Class A Common Stock | Options Exercise | 11.9% | 12,500 | 117,458 | 19 Oct 2026 | Direct | ||
| Thomas J. Seifert | NET | Performance Stock Option (right to buy) | Options Exercise | -2.5% | -12,500 | 487,500 | 19 Oct 2026 | Direct | ||
| Thomas J. Seifert | NET | Class A Common Stock | Tax liability | -2.73% | -2,944 | 104,958 | 15 Oct 2026 | Direct | ||
| 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 |
* marks a reported price that did not pass the local price check.