NET Cloudflare, Inc.
Cloudflare, Inc. (NET) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 100% planned / 0% discretionary
Largest single sale: $16.2M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Zatlyn Michelle 7 fills | PRESIDENT & BOARD CO-CHAIR | Sell 10b5-1 | 33,003 | $277.43 | $9.2M | 101,065 −24.6% of holding | |
| Zatlyn Michelle 4 fills | PRESIDENT & BOARD CO-CHAIR | Sell 10b5-1 | 33,003 | $281.67 | $9.3M | 100,025 −24.8% of holding | |
| Zatlyn Michelle 6 fills | PRESIDENT & BOARD CO-CHAIR | Sell 10b5-1 | 33,003 | $278.92 | $9.2M | 95,575 −25.7% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 33,003 | $277.43 | $9.2M | 100,572 −24.7% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 33,003 | $285.06 | $9.4M | 95,771 −25.6% of holding | |
| Zatlyn Michelle 10 fills | President and Board Co-Chair | Sell 10b5-1 | 33,003 | $294.63 | $9.7M | 98,480 −25.1% of holding | |
| Riley Janel 5 fills | Chief Accounting Officer | Sell 10b5-1 | 3,481 | $305.26 | $1.1M | 44,761 −7.2% of holding | |
| Starzak Alissa Michelle | Chief Legal Officer | Sell 10b5-1 | 2,538 | $304.68 | $773.3K | 112,082 −2.2% of holding | |
| SEIFERT THOMAS J 7 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $307.32 | $3.1M | 119,946 −7.7% of holding | |
| Starzak Alissa Michelle 7 fills | Chief Legal Officer | Sell 10b5-1 | 3,333 | $310.15 | $1.0M | 116,988 −2.8% of holding | |
| Riley Janel 7 fills | Chief Accounting Officer | Sell 10b5-1 | 1,667 | $310.36 | $517.4K | 46,300 −3.5% of holding | |
| Graham-Cumming John 17 fills | Director | Sell 10b5-1 | 2,520 | $303.97 | $766.0K | 497,365 −0.5% of holding | |
| Ledbetter Carl 4 fills | Director | Sell 10b5-1 | 5,000 | $281.98 | $1.4M | 887,773 −0.6% of holding | |
| Prince Matthew 24 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,383 | $296.10 | $15.5M | 31,279 −62.6% of holding | |
| SEIFERT THOMAS J 2 fills | Chief Financial Officer | Sell 10b5-1 | 55,000 | $300.30 | $16.5M | 114,929 −32.4% of holding | |
| Prince Matthew 44 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,383 | $297.84 | $15.6M | 33,296 −61.1% of holding | |
| Prince Matthew 19 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,383 | $283.42 | $14.8M | 33,143 −61.2% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 133 | $277.74 | $36.9K | 10,632 −1.2% of holding | |
| SEIFERT THOMAS J 10 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $276.92 | $2.8M | 123,590 −7.5% of holding | |
| Zatlyn Michelle 7 fills | President and Board Co-Chair | Sell 10b5-1 | 33,003 | $286.48 | $9.5M | 77,171 −30% of holding | |
| Zatlyn Michelle 13 fills | President and Board Co-Chair | Sell 10b5-1 | 33,003 | $278.09 | $9.2M | 79,182 −29.4% of holding | |
| Zatlyn Michelle 6 fills | President and Board Co-Chair | Sell 10b5-1 | 33,058 | $265.79 | $8.8M | 72,552 −31.3% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 5,000 | $268.11 | $1.3M | 888,073 −0.6% of holding | |
| Prince Matthew 14 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,383 | $247.28 | $13.0M | 33,343 −61.1% of holding | |
| Graham-Cumming John 6 fills | Director | Sell 10b5-1 | 2,520 | $247.28 | $623.2K | 497,291 −0.5% of holding | |
| Prince Matthew 18 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,383 | $242.24 | $12.7M | 28,922 −64.4% of holding | |
| Prince Matthew 16 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,422 | $249.09 | $13.1M | 33,093 −61.3% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 133 | $249.00 | $33.1K | 10,765 −1.2% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $224.30 | $11.7M | 49,501 −51.4% of holding | |
| Prince Matthew 15 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $225.39 | $11.8M | 51,989 −50.2% of holding | |
| Prince Matthew 13 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $217.91 | $11.4M | 48,394 −52% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $219.11 | $5.6M | 68,416 −27.3% of holding | |
| Zatlyn Michelle 7 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $232.66 | $6.0M | 69,591 −26.9% of holding | |
| SEIFERT THOMAS J 8 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $232.39 | $2.3M | 125,833 −7.4% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $232.98 | $6.0M | 69,345 −27% of holding | |
| Graham-Cumming John 7 fills | Director | Sell 10b5-1 | 2,520 | $235.95 | $594.6K | 496,543 −0.5% of holding | |
| Suder Katrin | Director | Sell 10b5-1 | 293 | $252.92 | $74.1K | 37,430 −0.8% of holding | |
| Ledbetter Carl 5 fills | Director | Sell 10b5-1 | 15,000 | $246.06 | $3.7M | 905,473 −1.6% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 133 | $246.42 | $32.8K | 10,056 −1.3% of holding | |
| Starzak Alissa Michelle 5 fills | Chief Legal Officer | Sell 10b5-1 | 16,243 | $216.15 | $3.5M | 133,342 −10.9% of holding | |
| Zatlyn Michelle 6 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $210.30 | $5.4M | 65,265 −28.2% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $211.83 | $5.4M | 68,464 −27.2% of holding | |
| Zatlyn Michelle 6 fills | President and Board Co-Chair | Sell 10b5-1 | 35,080 | $213.98 | $7.5M | 76,944 −31.3% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $210.66 | $11.0M | 76,107 −40.8% of holding | |
| Prince Matthew 9 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $207.65 | $10.9M | 76,058 −40.8% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $204.15 | $10.7M | 74,872 −41.2% of holding | |
| SEIFERT THOMAS J 8 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $200.61 | $2.0M | 221,914 −4.3% of holding | |
| Riley Janel | Chief Accounting Officer | Sell 10b5-1 | 3,481 | $193.32 | $672.9K | 49,163 −6.6% of holding | |
| Riley Janel | Chief Accounting Officer | Sell 10b5-1 | 3,333 | $196.95 | $656.4K | 52,644 −6% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 15,000 | $238.12 | $3.6M | 908,073 −1.6% of holding | |
| Graham-Cumming John 7 fills | Director | Sell 10b5-1 | 2,520 | $221.58 | $558.4K | 496,471 −0.5% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 5,009 | $215.82 | $1.1M | 923,073 −0.5% of holding | |
| Hawkins Mark J | Director | Sell | 133 | $211.62 | $28.1K | 10,189 −1.3% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 9,991 | $215.85 | $2.2M | 928,082 −1.1% of holding | |
| Zatlyn Michelle 5 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $209.15 | $5.4M | 53,930 −32.2% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $206.10 | $5.3M | 52,246 −32.9% of holding | |
| Zatlyn Michelle 6 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $199.37 | $5.1M | 56,933 −31.1% of holding | |
| SEIFERT THOMAS J 7 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $197.98 | $2.0M | 229,605 −4.2% of holding | |
| Prince Matthew 15 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $213.72 | $11.2M | 50,719 −50.8% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $212.24 | $11.1M | 51,817 −50.3% of holding | |
| Prince Matthew 6 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $210.02 | $11.0M | 45,693 −53.4% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 133 | $209.60 | $27.9K | 10,322 −1.3% of holding | |
| Graham-Cumming John 5 fills | Director | Sell 10b5-1 | 3,644 | $202.31 | $737.2K | 497,355 −0.7% of holding | |
| Prince Matthew 17 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $221.19 | $11.6M | 49,600 −51.4% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 15,000 | $227.05 | $3.4M | 938,073 −1.6% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $212.25 | $11.1M | 50,930 −50.7% of holding | |
| SEIFERT THOMAS J 5 fills | Chief Financial Officer | Sell 10b5-1 | 10,341 | $212.30 | $2.2M | 234,766 −4.2% of holding | |
| Prince Matthew 6 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $209.08 | $11.0M | 37,238 −58.4% of holding | |
| Zatlyn Michelle 5 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $189.50 | $4.9M | 58,929 −30.3% of holding | |
| Riley Janel | Chief Accounting Officer | Sell 10b5-1 | 23,332 | $190.00 | $4.4M | 56,791 −29.1% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $179.63 | $4.6M | 48,678 −34.5% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $174.61 | $4.5M | 52,801 −32.7% of holding | |
| Riley Janel | CHIEF ACCOUNTING OFFICER | Sell 10b5-1 | 4,160 | $180.00 | $748.8K | 56,791 −6.8% of holding | |
| Graham-Cumming John 7 fills | Director | Sell 10b5-1 | 2,520 | $178.24 | $449.2K | 497,599 −0.5% of holding | |
| Hawkins Mark J | Director | Sell | 133 | $168.62 | $22.4K | 10,455 −1.3% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $173.78 | $9.1M | 71,198 −42.4% of holding | |
| Prince Matthew 10 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $169.09 | $8.9M | 72,650 −41.9% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $164.15 | $8.6M | 74,700 −41.2% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $172.76 | $4.4M | 50,591 −33.6% of holding | |
| SEIFERT THOMAS J 17 fills | Chief Financial Officer | Sell 10b5-1 | 41,557 | $185.04 | $7.7M | 118,730 −25.9% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $192.66 | $4.9M | 59,409 −30.1% of holding | |
| Zatlyn Michelle 10 fills | President and Board Co-Chair | Sell 10b5-1 | 35,080 | $187.39 | $6.6M | 67,253 −34.3% of holding | |
| Graham-Cumming John 6 fills | Director | Sell 10b5-1 | 2,520 | $173.35 | $436.8K | 497,679 −0.5% of holding | |
| Kramer Douglas James | CHIEF LEGAL OFFICER | Sell | 3,000 | $176.19 | $528.6K | 101,101 −2.9% of holding | |
| Hawkins Mark J | Director | Sell | 134 | $176.19 | $23.6K | 10,588 −1.2% of holding | |
| Ledbetter Carl 3 fills | Director | Sell 10b5-1 | 15,000 | $211.16 | $3.2M | 961,169 −1.5% of holding | |
| SEIFERT THOMAS J 7 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $178.37 | $1.8M | 146,558 −6.4% of holding | |
| Zatlyn Michelle 2 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $190.05 | $4.9M | 26,402 −49.3% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $187.67 | $4.8M | 36,038 −41.6% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $187.96 | $4.8M | 48,235 −34.7% of holding | |
| Prince Matthew 13 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $189.47 | $9.9M | 48,569 −51.9% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $201.84 | $10.6M | 48,285 −52% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $194.77 | $10.2M | 41,718 −55.7% of holding | |
| Ledbetter Carl 3 fills | Director | Sell 10b5-1 | 6,134 | $198.26 | $1.2M | 972,640 −0.6% of holding | |
| Graham-Cumming John 8 fills | Director | Sell 10b5-1 | 2,520 | $200.27 | $504.7K | 497,659 −0.5% of holding | |
| Kramer Douglas James 4 fills | Chief Legal Officer | Sell 10b5-1 | 9,000 | $198.54 | $1.8M | 110,433 −7.5% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 134 | $198.90 | $26.7K | 10,722 −1.2% of holding | |
| Ledbetter Carl | Director | Sell 10b5-1 | 192 | $201.25 | $38.6K | 974,207 −0% of holding | |
| Ledbetter Carl 2 fills | Director | Sell 10b5-1 | 8,674 | $201.46 | $1.7M | 975,038 −0.9% of holding | |
| SEIFERT THOMAS J 5 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $201.69 | $2.0M | 147,133 −6.4% of holding | |
| Suder Katrin | Director | Sell 10b5-1 | 2,031 | $200.00 | $406.2K | 37,723 −5.1% of holding | |
| Graham-Cumming John 7 fills | Director | Sell 10b5-1 | 2,520 | $199.37 | $502.4K | 497,159 −0.5% of holding | |
| Zatlyn Michelle 5 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $208.61 | $5.3M | 48,122 −34.8% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $205.91 | $5.3M | 38,047 −40.3% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $205.15 | $5.3M | 36,786 −41.1% of holding | |
| Prince Matthew 6 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $201.23 | $10.5M | 21,855 −70.6% of holding | |
| Prince Matthew 5 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $203.66 | $10.7M | 48,016 −52.2% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $202.19 | $10.6M | 50,972 −50.7% of holding | |
| Kramer Douglas James 3 fills | Chief Legal Officer | Sell 10b5-1 | 3,000 | $196.84 | $590.5K | 114,801 −2.5% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 134 | $197.65 | $26.5K | 10,856 −1.2% of holding | |
| Zatlyn Michelle 3 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $189.07 | $4.8M | 37,598 −40.5% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $188.13 | $4.8M | 45,730 −35.9% of holding | |
| SEIFERT THOMAS J 13 fills | Chief Financial Officer | Sell 10b5-1 | 41,555 | $194.18 | $8.1M | 176,769 −19% of holding | |
| Zatlyn Michelle 13 fills | President and Board Co-Chair | Sell 10b5-1 | 35,099 | $199.26 | $7.0M | 59,202 −37.2% of holding | |
| Prince Matthew 5 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $195.32 | $10.2M | 66,901 −43.9% of holding | |
| Suder Katrin | Director | Sell 10b5-1 | 2,031 | $196.38 | $398.8K | 39,754 −4.9% of holding | |
| Prince Matthew 9 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $197.56 | $10.3M | 74,487 −41.3% of holding | |
| Riley Janel 7 fills | Chief Accounting Officer | Sell 10b5-1 | 3,488 | $196.51 | $685.4K | 59,423 −5.5% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $204.76 | $10.7M | 60,556 −46.4% of holding | |
| Ledbetter Carl 5 fills | Director | Sell 10b5-1 | 15,000 | $207.96 | $3.1M | 989,613 −1.5% of holding | |
| Kramer Douglas James 3 fills | Chief Legal Officer | Sell 10b5-1 | 3,000 | $255.53 | $766.6K | 131,230 −2.2% of holding | |
| Graham-Cumming John 11 fills | Director | Sell 10b5-1 | 2,520 | $250.83 | $632.1K | 497,675 −0.5% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 1,000 | $254.15 | $254.2K | 10,990 −8.3% of holding | |
| Ledbetter Carl 3 fills | Director | Sell 10b5-1 | 15,000 | $210.65 | $3.2M | 1,007,973 −1.5% of holding | |
| SEIFERT THOMAS J 5 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $211.81 | $2.1M | 199,017 −4.8% of holding | |
| Prince Matthew 12 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $213.96 | $11.2M | 50,167 −51.1% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $221.05 | $11.6M | 46,478 −53% of holding | |
| Prince Matthew 8 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $215.51 | $11.3M | 51,140 −50.6% of holding | |
| Graham-Cumming John 8 fills | Director | Sell 10b5-1 | 2,520 | $221.36 | $557.8K | 497,672 −0.5% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $215.38 | $5.5M | 24,172 −51.5% of holding | |
| Zatlyn Michelle 5 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $218.45 | $5.6M | 32,433 −44.2% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $218.20 | $5.6M | 33,487 −43.4% of holding | |
| Kramer Douglas James 3 fills | Chief Legal Officer | Sell 10b5-1 | 9,000 | $213.48 | $1.9M | 135,843 −6.2% of holding | |
| Hawkins Mark J | Director | Sell 10b5-1 | 1,000 | $212.83 | $212.8K | 11,990 −7.7% of holding | |
| Zatlyn Michelle 4 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $212.49 | $5.4M | 31,992 −44.5% of holding | |
| Zatlyn Michelle 8 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $221.20 | $5.7M | 35,895 −41.7% of holding | |
| Zatlyn Michelle 7 fills | President and Board Co-Chair | Sell 10b5-1 | 25,641 | $223.45 | $5.7M | 37,494 −40.6% of holding | |
| Ledbetter Carl 3 fills | Director | Sell 10b5-1 | 15,000 | $223.91 | $3.4M | 1,020,358 −1.4% of holding | |
| SEIFERT THOMAS J 7 fills | Chief Financial Officer | Sell 10b5-1 | 10,000 | $227.64 | $2.3M | 198,517 −4.8% of holding | |
| Prince Matthew 7 fills | CEO & Board Co-Chair | Sell 10b5-1 | 52,384 | $226.46 | $11.9M | 47,802 −52.3% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.