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 7 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 → $3.7M
12,500 sh across 7 lots
Exec Oct 19
Filed Oct 19 · 7:04 PM ET NETSALE Cloudflare, Inc. View filing → $3.1M
9,300 sh across 7 lots
Exec Sep 17
Filed Sep 21 · 4:50 PM ET NETSALE Cloudflare, Inc. View filing → $2.9M
9,400 sh across 4 lots
Exec Aug 17
Filed Aug 19 · 5:35 PM ET NETSALE Cloudflare, Inc. View filing → $16.5M
55,000 sh across 2 lots
Exec Aug 4
Filed Aug 6 · 7:03 PM ET NETSALE Cloudflare, Inc. View filing → $2.5M
9,100 sh across 6 lots
Exec Jul 17
Filed Jul 17 · 7:01 PM ET NETSALE Cloudflare, Inc. View filing → $2.3M
10,000 sh across 8 lots
Exec Jun 17
Filed Jun 17 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $1.8M
8,930 sh across 4 lots
Exec May 18
Filed May 19 · 5:30 PM ET NETSALE Cloudflare, Inc. View filing → $1.9M
9,600 sh across 6 lots
Exec Apr 17
Filed Apr 17 · 5:30 PM ET More filings →