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NET - Cloudflare, Inc.

Insider Sale by Seifert Thomas J (CFO)

1 Month
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Trade Summary

Yesterday, Seifert Thomas J, serving as CFO at Cloudflare, Inc. (NET), sold 10,341 shares at $212.31 per share, for a total transaction value of $2,195,442.00. Following this transaction, Seifert Thomas J now holds 224,625 shares of NET.

This sale represents a 4.00% decrease in Seifert Thomas J's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Tuesday, March 17, 2026 and publicly disclosed via SEC Form 4 filing on Tuesday, March 17, 2026, meaning the disclosure happened on the same day as the trade.

Cloudflare, Inc. operates in the TECHNOLOGY sector, specifically within the SOFTWARE - INFRASTRUCTURE industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Seifert Thomas J

CFO

Thomas J. Seifert is the Chief Financial Officer (CFO) of Cloudflare, Inc. (NYSE: NET), a position he has held since June 1, 2017, when he joined as the company's first-ever CFO.[[1]](https://www.cloudflare.com/press/press-releases/2017/cloudflare-names-thomas-seifert-as-its-first-ever-chief-financial-officer/)[[2]](https://www.clay.com/dossier/cloudflare-cfo)[[4]](https://www.personio.com/about-personio/press/thomas-seifert-board-of-directors/) In this role, he oversees global finance operations, led Cloudflare through its 2019 IPO, and has contributed to its scaling and growth, reporting to CEO Matthew Prince.[[1]](https://www.cloudflare.com/press/press-releases/2017/cloudflare-names-thomas-seifert-as-its-first-ever-chief-financial-officer/)[[4]](https://www.personio.com/about-personio/press/thomas-seifert-board-of-directors/) Seifert recently engaged in insider trading at Cloudflare, owning approximately 137,486 shares valued over $25 million as of recent records.[[5]](https://www.gurufocus.com/insider/743/thomas-j-seifert) Prior to Cloudflare, Seifert served as Executive Vice President and CFO at Symantec (2014-2017), where he drove financial transformation and the BlueCoat acquisition; EVP and CFO at Brightstar Corp. (2012-2014); and CFO, Chief Accounting Officer, and interim CEO at Advanced Micro Devices (AMD) (2009-2012).[[1]](https://www.cloudflare.com/press/press-releases/2017/cloudflare-names-thomas-seifert-as-its-first-ever-chief-financial-officer/)[[2]](https://www.clay.com/dossier/cloudflare-cfo)[[3]](https://theorg.com/org/cloudflare/org-chart/thomas-seifert) Earlier roles include positions at Qimonda AG and Infineon Technologies AG.[[1]](https://www.cloudflare.com/press/press-releases/2017/cloudflare-names-thomas-seifert-as-its-first-ever-chief-financial-officer/) He holds a bachelor's degree and MBA from Friedrich Alexander University (FAU Erlangen-Nürnberg) in Germany, and a master's degree in economics from Wayne State University.[[1]](https://www.cloudflare.com/press/press-releases/2017/cloudflare-names-thomas-seifert-as-its-first-ever-chief-financial-officer/)[[3]](https://theorg.com/org/cloudflare/org-chart/thomas-seifert) Seifert also serves on boards including Personio (joined December 2025, chairing audit committee), First Derivatives, and previously IPG Photonics and CompuGroup Medical SE.[[2]](https://www.clay.com/dossier/cloudflare-cfo)[[4]](https://www.personio.com/about-personio/press/thomas-seifert-board-of-directors/)[[7]](https://www.wolfspeed.com/company/news-events/news/wolfspeed-nominates-thomas-seifert-and-woody-young-to-board-of-directors/)

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Trade Price

$212.31

Quantity

10,341

Total Value

$2,195,442.00

Shares Owned

224,625

Trade Date

Tuesday, March 17, 2026

1 days ago

SEC Filing Date

Tuesday, March 17, 2026

TECHNOLOGYSOFTWARE - INFRASTRUCTURE

About Cloudflare, Inc.

Company Overview

No company information available
View news mentioning NET

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