Thomas J Seifert

Chief Financial Officer · Cloudflare

Thomas J Seifert (Chief Financial Officer) filed 13 Form 4 reports in the trailing twelve months (0 purchases, 13 sales), most often in Cloudflare, Inc. (NET). The largest single filing was $16.5M of NET (55,000 sh across 2 lots, as filed), executed Aug 4. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 13 sells

Median delay

–

measured on stock purchases

Volume, ttmiDollar value disclosed in the trailing twelve months

$47.9M

shares × price, as filed

Last traded

Oct 19

Filed Oct 19

Median ADV $1.1B across their filed names

Open performance→

Volume by month

Buys $0 Sells $120.5M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Technology 13 filings

Sector per market data · by filing · past 12 months

Most traded names

NET

Cloudflare, Inc. NET · 0 buys · 30 sells 30 filings

Recent filings

NETSALE Cloudflare, Inc. View filing → $2.1M
10,041 sh across 3 lots
Exec Mar 17
Filed Mar 17 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $7.4M
40,062 sh across 12 lots
Exec Feb 20
Filed Feb 24 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $1.8M
9,900 sh across 6 lots
Exec Jan 20
Filed Jan 21 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $1.8M
9,164 sh across 3 lots
Exec Dec 22 2025
Filed Dec 23 2025 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $8.0M
41,455 sh across 12 lots
Exec Nov 20 2025
Filed Nov 21 2025 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $2.1M
9,700 sh across 4 lots
Exec Oct 20 2025
Filed Oct 20 2025 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $2.1M
9,200 sh across 5 lots
Exec Sep 22 2025
Filed Sep 22 2025 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $7.9M
41,555 sh across 10 lots
Exec Aug 20 2025
Filed Aug 21 2025 · 5:30 PM ET More filings →