SEC Form 4Coverage since Aug 18, 2025Open-market trades only
$NET insider trading
Over the last 12 months, Cloudflare insiders reported no purchases and 103 sales totaling $691.2M across SEC Form 4 filings. 100% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $691.2M 103 events
- Events · 12m
- 103 Form 4 filings, grouped
- Insiders · 12m
- 10 distinct reporters
- 10b5-1 share
- 100% of events, not dollars
Side
Price · $NET · 3Mvia TradingView
Top insiders · 12m
Prince MatthewCEO & Board Co-Chair19× · $375.9M
Ledbetter Carl—17× · $32.5M
Hawkins Mark J—12× · $927K
Graham-Cumming John—12× · $8.5M
SEIFERT THOMAS JChief Financial Officer12× · $52.8M
All insider trades
50 of 108 events
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Aug 21, 2026 | Zatlyn MichellePresident and Board Co-Chair · O·D | ▼ Sale | 99,009 | $285.71 | $28.3M | -58.7% | plan · 26 tranches · indirect |
| Aug 18, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 5,871 | $307.79 | $1.8M | -5% | plan · 8 tranches |
| Aug 18, 2026 | Riley JanelChief Accounting Officer · O | ▼ Sale | 5,148 | $306.91 | $1.6M | -11% | plan · 12 tranches |
| Aug 17, 2026 | SEIFERT THOMAS JChief Financial Officer · O | ▼ Sale | 10,000 | $307.32 | $3.1M | -8.3% | plan · 7 tranches |
| Aug 10, 2026 | Graham-Cumming JohnD | ▼ Sale | 2,520 | $303.97 | $766K | -0.5% | plan · 17 tranches |
| Aug 6, 2026 | Ledbetter CarlD | ▼ Sale | 5,000 | $281.98 | $1.4M | -0.6% | plan · 4 tranches · indirect |
| Aug 5, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 33,631 | $296.1 | $10.0M | -100% | plan · 12 tranches · indirect |
| Aug 5, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 51,034 | $297.58 | $15.2M | -100% | plan · 28 tranches · indirect |
| Aug 4, 2026 | SEIFERT THOMAS JChief Financial Officer · O | ▼ Sale | 55,000 | $300.3 | $16.5M | -32.6% | plan · 2 tranches |
| Aug 4, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 20,101 | $296.89 | $6.0M | -38.4% | plan · 28 tranches · indirect |
| Aug 3, 2026 | Hawkins Mark JD | ▼ Sale | 133 | $277.74 | $37K | -1.2% | plan |
| Aug 3, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 52,383 | $283.42 | $14.8M | -100% | plan · 19 tranches · indirect |
| Jul 17, 2026 | SEIFERT THOMAS JChief Financial Officer · O | ▼ Sale | 10,000 | $276.92 | $2.8M | -8.1% | plan · 10 tranches |
| Jul 15, 2026 | Zatlyn MichellePresident and Board Co-Chair · O·D | ▼ Sale | 99,064 | $276.78 | $27.4M | -67.6% | plan · 26 tranches · indirect |
| Jul 7, 2026 | Ledbetter CarlD | ▼ Sale | 5,000 | $268.11 | $1.3M | -0.6% | plan · indirect |
| Jul 6, 2026 | Graham-Cumming JohnD | ▼ Sale | 2,520 | $247.28 | $623K | -0.5% | plan · 6 tranches |
| Jul 6, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 86,014 | $245.31 | $21.1M | -100% | plan · 23 tranches · indirect |
| Jul 2, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 71,174 | $247.28 | $17.6M | -100% | plan · 25 tranches · indirect |
| Jul 1, 2026 | Hawkins Mark JD | ▼ Sale | 133 | $249 | $33K | -1.2% | plan |
| Jun 24, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 52,384 | $224.3 | $11.7M | -100% | plan · 8 tranches · indirect |
| Jun 23, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 104,768 | $221.65 | $23.2M | -100% | plan · 28 tranches · indirect |
| Jun 18, 2026 | Zatlyn MichellePresident and Board Co-Chair · O·D | ▼ Sale | 76,923 | $228.25 | $17.6M | -61.9% | plan · 23 tranches · indirect |
| Jun 17, 2026 | SEIFERT THOMAS JChief Financial Officer · O | ▼ Sale | 10,000 | $232.39 | $2.3M | -7.9% | plan · 8 tranches |
| Jun 15, 2026 | Graham-Cumming JohnD | ▼ Sale | 2,520 | $235.95 | $595K | -0.5% | plan · 7 tranches |
| Jun 8, 2026 | Suder KatrinD | ▼ Sale | 293 | $252.92 | $74K | -0.8% | plan |
| Jun 1, 2026 | Hawkins Mark JD | ▼ Sale | 133 | $246.42 | $33K | -1.3% | plan |
| Jun 1, 2026 | Ledbetter CarlD | ▼ Sale | 100 | $248.31 | $25K | — | plan · indirect |
| Jun 1, 2026 | Ledbetter CarlD | ▼ Sale | 4,249 | $247.52 | $1.1M | -0.5% | plan · indirect |
| Jun 1, 2026 | Ledbetter CarlD | ▼ Sale | 3,200 | $246.73 | $790K | -0.4% | plan · indirect |
| Jun 1, 2026 | Ledbetter CarlD | ▼ Sale | 4,851 | $245.44 | $1.2M | -0.5% | plan · indirect |
| Jun 1, 2026 | Ledbetter CarlD | ▼ Sale | 2,600 | $243.94 | $634K | -0.3% | plan · indirect |
| May 28, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 1,442 | $218.13 | $315K | -1.2% | plan |
| May 28, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 5,721 | $217.21 | $1.2M | -4.6% | plan |
| May 28, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 3,264 | $216.12 | $705K | -2.5% | plan |
| May 28, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 4,520 | $215.01 | $972K | -3.4% | plan |
| May 28, 2026 | Starzak Alissa MichelleChief Legal Officer · O | ▼ Sale | 1,296 | $213.3 | $276K | -1% | plan |
| May 22, 2026 | Zatlyn MichellePresident and Board Co-Chair · O·D | ▼ Sale | 5,561 | $211.54 | $1.2M | -6.7% | plan · indirect |
| May 5, 2026 | Ledbetter CarlD | ▼ Sale | 15,000 | $238.12 | $3.6M | -1.6% | plan · indirect |
| May 4, 2026 | Graham-Cumming JohnD | ▼ Sale | 2,520 | $221.58 | $558K | -0.5% | plan · 7 tranches |
| May 1, 2026 | Hawkins Mark JD | ▼ Sale | 133 | $211.62 | $28K | -1.3% | plan |
| May 1, 2026 | Ledbetter CarlD | ▼ Sale | 5,009 | $215.82 | $1.1M | -0.5% | plan · indirect |
| Apr 28, 2026 | Ledbetter CarlD | ▼ Sale | 9,991 | $215.85 | $2.2M | -1.1% | plan · indirect |
| Apr 22, 2026 | Zatlyn MichellePresident and Board Co-Chair · O·D | ▼ Sale | 76,923 | $204.87 | $15.8M | -69% | plan · 14 tranches · indirect |
| Apr 17, 2026 | SEIFERT THOMAS JChief Financial Officer · O | ▼ Sale | 10,000 | $197.98 | $2.0M | -4.3% | plan · 7 tranches |
| Apr 8, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 659 | $223.62 | $147K | -100% | plan · 2 tranches · indirect |
| Apr 8, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 156,493 | $211.94 | $33.2M | -99.6% | plan · 27 tranches · indirect |
| Apr 1, 2026 | Hawkins Mark JD | ▼ Sale | 133 | $209.6 | $28K | -1.3% | plan |
| Mar 27, 2026 | Graham-Cumming JohnD | ▼ Sale | 3,644 | $202.31 | $737K | -0.7% | plan · 5 tranches |
| Mar 18, 2026 | Ledbetter CarlD | ▼ Sale | 15,000 | $227.05 | $3.4M | -1.6% | plan · indirect |
| Mar 18, 2026 | Prince MatthewCEO & Board Co-Chair · O·D·10% | ▼ Sale | 13,618 | $227.8 | $3.1M | -100% | plan · 3 tranches · indirect |
Every $NET filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Cloudflare filings can reach your inbox instead.
About Form 4
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $NET feed.