SEC Form 4
Cloudflare, Inc. (NET) insider trading
In the 12 months to Oct 23, 2026, 10 NET insiders reported open-market sales of $700.0M across 90 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $700.0M
- 90 filings · 10 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 86 of 90
- $699.4M of $700.0M sold (100%)
Who traded NET, and when
- Sale
- Sale, pre-arranged (10b5-1)
NET daily close from Oct 23, 2025 to Oct 23, 2026, between $160.19 and $360.93, last $321.79. 90 sale and 0 purchase filings by 10 insiders, marked at their filing dates. Matthew Prince, CEO & Board Co-Chair: sold $339.6M across 17 filings, first filed Nov 19, 2025, last Aug 5, 2026. Michelle Zatlyn, President and Board Co-Chair → PRESIDENT & BOARD CO-CHAIR: sold $247.2M across 12 filings, first filed Nov 24, 2025, last Oct 7, 2026. Thomas J. Seifert, Chief Financial Officer: sold $57.5M across 13 filings, first filed Nov 21, 2025, last Oct 19, 2026. Carl Ledbetter, Director: sold $30.8M across 14 filings, first filed Nov 17, 2025, last Oct 19, 2026. Janel Riley, Chief Accounting Officer → CHIEF ACCOUNTING OFFICER: sold $8.8M across 5 filings, first filed Nov 18, 2025, last Aug 19, 2026. John Graham-Cumming, Director: sold $5.8M across 10 filings, first filed Nov 3, 2025, last Aug 11, 2026. 4 others: sold $10.4M across 19 filings, first filed Nov 3, 2025, last Aug 19, 2026.
Largest mark · tap a row for others
Matthew Prince · CEO & Board Co-Chair
Filing 1 of 4 within a week · $45,959,037 total
Sale $14,846,244
52,383 shares at $283.42 avg
Filed Aug 5, 2026 · traded Aug 3
Pre-arranged (10b5-1) · close on filing date $292.96
Matthew Prince · CEO & Board Co-Chair
CEO & Board Co-Chair
$339.6M soldMichelle Zatlyn · President and Board Co-Chair → PRESIDENT & BOARD CO-CHAIR
President and Board Co-Chair → PRESIDENT & BOARD CO-CHAIR
$247.2M soldThomas J. Seifert · Chief Financial Officer
Chief Financial Officer
$57.5M soldCarl Ledbetter · Director
Director
$30.8M soldJanel Riley · Chief Accounting Officer → CHIEF ACCOUNTING OFFICER
Chief Accounting Officer → CHIEF ACCOUNTING OFFICER
$8.8M soldJohn Graham-Cumming · Director
Director
$5.8M sold4 others
Combined, one mark per week
$10.4M soldHas Cloudflare, Inc.'s CEO sold stock?
Yes. Matthew Prince (CEO) sold 1,571,553 shares ($339.6M) between Nov 2025 and Aug 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
90 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Matthew Prince | CEO & Board Co-Chair | $339.6M | — | 17 | 100% of sales | |
| Michelle Zatlyn | President and Board Co-Chair → PRESIDENT & BOARD CO-CHAIR | $247.2M | — | 12 | 100% of sales | |
| Thomas J. Seifert | Chief Financial Officer | $57.5M | — | 13 | 100% of sales | |
| Carl Ledbetter | Director | $30.8M | — | 14 | 100% of sales | |
| Janel Riley | Chief Accounting Officer → CHIEF ACCOUNTING OFFICER | $8.8M | — | 5 | 100% of sales | |
| John Graham-Cumming | Director | $5.8M | — | 10 | 100% of sales | |
| Alissa Michelle Starzak | Chief Legal Officer | $5.3M | — | 2 | 100% of sales | |
| Douglas James Kramer | Chief Legal Officer → CHIEF LEGAL OFFICER | $3.7M | — | 4 | 86% of sales | |
| Katrin Suder | Director | $879.2K | — | 3 | 100% of sales | |
| Mark J. Hawkins | Director | $512.2K | — | 10 | 86% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,000 | $304.40 | $1.5M | 871,142 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 12,500 | $299.59 | $3.7M | 105,960 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 99,009 | $355.88 | $35.2M | 80,374 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,000 | $353.15 | $1.8M | 873,073 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $332.46 | $3.3M | 117,702 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,000 | $312.22 | $1.6M | 879,273 | |
traded | Michelle Zatlyn PRESIDENT & BOARD CO-CHAIR | SalePre-arranged (10b5-1) | 99,009 | $279.34 | $27.7M | 90,225 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 99,009 | $285.71 | $28.3M | 91,582 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $307.32 | $3.1M | 111,146 | |
traded | Janel Riley Chief Accounting Officer | SalePre-arranged (10b5-1) | 5,148 | $306.91 | $1.6M | 42,047 | |
traded | Alissa Michelle Starzak Chief Legal Officer | SalePre-arranged (10b5-1) | 5,871 | $307.79 | $1.8M | 112,082 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $303.97 | $766.0K | 495,524 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,000 | $281.98 | $1.4M | 883,073 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 55,000 | $300.30 | $16.5M | 114,929 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 52,383 | $283.42 | $14.8M | 17,980 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 20,101 | $296.89 | $6.0M | 18,361 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 51,034 | $297.58 | $15.2M | 307 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 33,631 | $296.10 | $10.0M | 31,279 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 133 | $277.74 | $36.9K | 10,632 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $276.92 | $2.8M | 114,090 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 99,064 | $276.78 | $27.4M | 71,923 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,000 | $268.11 | $1.3M | 888,073 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $247.28 | $623.2K | 497,291 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 71,174 | $247.28 | $17.6M | 2,273 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 86,014 | $245.31 | $21.1M | 31,460 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 133 | $249.00 | $33.1K | 10,765 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 104,768 | $221.65 | $23.2M | 49,281 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 52,384 | $224.30 | $11.7M | 0 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 76,923 | $228.25 | $17.6M | 47,525 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $232.39 | $2.3M | 117,333 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $235.95 | $594.6K | 494,625 | |
traded | Katrin Suder Director | SalePre-arranged (10b5-1) | 293 | $252.92 | $74.1K | 37,430 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 15,000 | $246.06 | $3.7M | 897,422 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 133 | $246.42 | $32.8K | 10,056 | |
traded | Alissa Michelle Starzak Chief Legal Officer | SalePre-arranged (10b5-1) | 16,243 | $216.15 | $3.5M | 119,837 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 86,362 | $212.25 | $18.3M | 52,787 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 157,152 | $207.49 | $32.6M | 71,880 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $200.61 | $2.0M | 217,854 | |
traded | Janel Riley Chief Accounting Officer | SalePre-arranged (10b5-1) | 6,814 | $195.10 | $1.3M | 49,163 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 15,000 | $238.12 | $3.6M | 908,073 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $221.58 | $558.4K | 494,982 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 5,009 | $215.82 | $1.1M | 923,073 | |
traded | Mark J. Hawkins Director | Sale | 133 | $211.62 | $28.1K | 10,189 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 9,991 | $215.85 | $2.2M | 928,082 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 76,923 | $204.87 | $15.8M | 34,514 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $197.98 | $2.0M | 229,605 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 156,493 | $211.94 | $33.2M | 26,883 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 659 | $223.62 | $147.4K | 2 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 133 | $209.60 | $27.9K | 10,322 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 3,644 | $202.31 | $737.2K | 496,265 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 15,000 | $227.05 | $3.4M | 938,073 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 143,534 | $212.88 | $30.6M | 49,600 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 13,618 | $227.80 | $3.1M | 8,934 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,341 | $212.30 | $2.2M | 234,666 | |
traded | Janel Riley Chief Accounting Officer | SalePre-arranged (10b5-1) | 23,332 | $190.00 | $4.4M | 56,791 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 76,923 | $181.25 | $13.9M | 40,560 | |
traded | Janel Riley CHIEF ACCOUNTING OFFICER | SalePre-arranged (10b5-1) | 4,160 | $180.00 | $748.8K | 56,791 | |
traded | Mark J. Hawkins Director | Sale | 133 | $168.62 | $22.4K | 10,455 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $178.24 | $449.2K | 496,622 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 157,152 | $169.01 | $26.6M | 56,879 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 41,557 | $185.04 | $7.7M | 104,230 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 86,362 | $184.61 | $15.9M | 50,591 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $173.35 | $436.8K | 495,191 | |
traded | Mark J. Hawkins Director | Sale | 134 | $176.19 | $23.6K | 10,588 | |
traded | Douglas James Kramer CHIEF LEGAL OFFICER | Sale | 3,000 | $176.19 | $528.6K | 101,101 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 15,000 | $211.16 | $3.2M | 961,169 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $178.37 | $1.8M | 138,186 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 76,923 | $188.56 | $14.5M | 26,402 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 157,152 | $195.36 | $30.7M | 920 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 6,134 | $198.26 | $1.2M | 968,073 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 134 | $198.90 | $26.7K | 10,722 | |
traded | Douglas James Kramer Chief Legal Officer | SalePre-arranged (10b5-1) | 9,000 | $198.54 | $1.8M | 110,433 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $200.27 | $504.7K | 495,352 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 8,866 | $201.46 | $1.8M | 974,207 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 10,000 | $201.69 | $2.0M | 147,133 | |
traded | Katrin Suder Director | SalePre-arranged (10b5-1) | 2,031 | $200.00 | $406.2K | 37,723 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $199.37 | $502.4K | 497,159 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 76,923 | $206.56 | $15.9M | 45,854 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 157,152 | $202.36 | $31.8M | 196 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 134 | $197.65 | $26.5K | 10,856 | |
traded | Douglas James Kramer Chief Legal Officer | SalePre-arranged (10b5-1) | 3,000 | $196.84 | $590.5K | 113,104 | |
traded | Michelle Zatlyn President and Board Co-Chair | SalePre-arranged (10b5-1) | 86,381 | $192.93 | $16.7M | 24,555 | |
traded | Thomas J. Seifert Chief Financial Officer | SalePre-arranged (10b5-1) | 41,555 | $194.18 | $8.1M | 148,647 | |
traded | Matthew Prince CEO & Board Co-Chair | SalePre-arranged (10b5-1) | 157,152 | $199.21 | $31.3M | 22,559 | |
traded | Katrin Suder Director | SalePre-arranged (10b5-1) | 2,031 | $196.38 | $398.8K | 39,754 | |
traded | Janel Riley Chief Accounting Officer | SalePre-arranged (10b5-1) | 3,488 | $196.51 | $685.4K | 57,035 | |
traded | Carl Ledbetter Director | SalePre-arranged (10b5-1) | 15,000 | $207.96 | $3.1M | 983,073 | |
traded | Douglas James Kramer Chief Legal Officer | SalePre-arranged (10b5-1) | 3,000 | $255.53 | $766.6K | 130,067 | |
traded | Mark J. Hawkins Director | SalePre-arranged (10b5-1) | 1,000 | $254.15 | $254.2K | 10,990 | |
traded | John Graham-Cumming Director | SalePre-arranged (10b5-1) | 2,520 | $250.83 | $632.1K | 495,702 |
GET /stocks/filings/vX/form-4?tickers=NET&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"NET"
],
"issuer_cik": "0001477333",
"owner_cik": "0001473289",
"accession_number": "0001473289-26-000031",
"form_type": "4",
"filing_date": "2026-10-19",
"period_of_report": "2026-10-15",
"issuer_name": "Cloudflare, Inc.",
"issuer_trading_symbol": "NET",
"owner_name": "SEIFERT THOMAS J",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Financial Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-19",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 3756,
"transaction_price_per_share": 299.3555,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 109201,
"transaction_value": 1124379.258,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F2",
"description": "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."
},
{
"id": "F5",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $298.93 to $299.92, inclusive."
}
]
},
{
"tickers": [
"NET"
],
"issuer_cik": "0001477333",
"owner_cik": "0001366574",
"accession_number": "0001366574-26-000026",
"form_type": "4",
"filing_date": "2026-10-19",
"period_of_report": "2026-10-19",
"issuer_name": "Cloudflare, Inc.",
"issuer_trading_symbol": "NET",
"owner_name": "Ledbetter Carl",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-19",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1963,
"transaction_price_per_share": 304.4744,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 869179,
"transaction_value": 597683.2472,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "See footnote",
"footnotes": [
{
"id": "F1",
"description": "The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 25, 2026."
},
{
"id": "F4",
"description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $304.055 to $305.05, inclusive."
},
{
"id": "F3",
"description": "The shares are held of record by the Carl S. Ledbetter Trust dated February 14, 2020, for which the reporting person serves as a trustee."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 142 records
- Option exercises22 records
- Tax withholding26 records
- Grants and awards12 records
- Gifts1 record
- Other81 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for NET every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.