SEIFERT THOMAS J

NET

SEIFERT THOMAS J serves as officer: Chief Financial Officer at Cloudflare, Inc. (NET). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

3 trades

$21.17M

Net Position

Net Seller

$21.17M

Companies Traded

NET

Active Period

Jan 2026 – Feb 2026

3 total trades

Most Recent

Sell NET

Feb 24, 2026 · $15.38M

SEIFERT THOMAS J's Insider Trading at Cloudflare, Inc. (NET)

Buys

0 · $0.00

Sells

3 · $21.17M

Total Shares Bought

Total Shares Sold

113,591

NET Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Feb 24, 2026↗	Sell	83,114	$185.04	$15.38M	118,730
Feb 15, 2026↗	Sell	20,477	$195.85	$4.01M	0
Jan 21, 2026↗	Sell	10,000	$178.37	$1.78M	146,558

Related Insiders

Michelle Zatlyn

director, officer: President and Board Co-Chair

NETSell · Mar 5, 2026

Janel Riley

officer: Chief Accounting Officer

NETSell · Mar 5, 2026

Janel Riley

officer: CHIEF ACCOUNTING OFFICER

NETSell · Mar 3, 2026

Mark J Hawkins

director

NETSell · Mar 2, 2026

John Graham-Cumming

director

NETSell · Mar 2, 2026

Matthew Prince

director, 10 percent owner, officer: CEO & Board Co-Chair

NETSell · Feb 26, 2026

Michelle Zatlyn

President and Board Co-Chair

NETSell · Feb 23, 2026

Matthew Prince

CEO & Board Co-Chair

NETSell · Feb 15, 2026

Explore More Insider Trading Data

NET Insider Trading Activity

View all insider trades at Cloudflare, Inc.

Technology Sector Insider Trades

See insider activity across technology stocks

Latest Insider Buys

Most recent insider purchases across all stocks

CEO Stock Purchases

Track CEO buying activity