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Thomas J Seifert Insider Trading Activity

Every SEC Form 4 transaction reported by Thomas J Seifert, sourced directly from SEC EDGAR and updated as new filings are accepted.

By · SEC Form 4 & insider trading data analysts
Last updated:

Quick Answer

Is Thomas J Seifert buying or selling?

Thomas J Seifert reported 0 open-market buys ($0) and 129 sells ($267.0M) across 129 Form 4 filings at 2 companies — a net selling position of $267.0M.

Source: SEC EDGAR Form 4

Key Statistics (as of Jul 17, 2026)

Total Form 4 filings
129
SEC EDGAR
Companies
2
Buys (0)
$0
Sells (129)
$267.0M

Insider sentiment

Net selling

Net insider flow of $267.0M in net selling, filed between Mar 5, 2020 – Jul 17, 2026.

Companies Thomas J Seifert files for

#CompanyForm 4 filings
1NETCloudflare, Inc.128
2IPGPIPG PHOTONICS CORP1

Recent Thomas J Seifert transactions

DateTickerRoleTypeSharesValue
Jul 17, 2026NETChief Financial OfficerSale10.0K$2.8M
Jun 17, 2026NETChief Financial OfficerSale10.0K$2.3M
May 19, 2026NETChief Financial OfficerSale10.0K$2.0M
Apr 17, 2026NETChief Financial OfficerSale10.0K$2.0M
Mar 17, 2026NETChief Financial OfficerSale10.3K$2.2M
Feb 25, 2026NETChief Financial OfficerSale41.6K$7.7M
Jan 21, 2026NETChief Financial OfficerSale10.0K$1.8M
Dec 23, 2025NETChief Financial OfficerSale10.0K$2.0M
Nov 21, 2025NETChief Financial OfficerSale41.6K$8.1M
Oct 20, 2025NETChief Financial OfficerSale10.0K$2.1M
Sep 22, 2025NETChief Financial OfficerSale10.0K$2.3M
Aug 21, 2025NETChief Financial OfficerSale41.6K$7.9M
Jul 29, 2025NETChief Financial OfficerSale60.7K$12.2M
Jun 23, 2025NETChief Financial OfficerSale10.0K$1.8M
May 22, 2025NETChief Financial OfficerSale41.6K$6.5M
Apr 28, 2025NETChief Financial OfficerSale10.0K$1.2M
Mar 21, 2025NETCHIEF FINANCIAL OFFICERSale10.0K$1.2M
Mar 6, 2025NETChief Financial OfficerSale15.0K$2.1M
Feb 19, 2025NETChief Financial OfficerSale28.6K$4.6M
Feb 5, 2025NETChief Financial OfficerSale15.0K$2.0M
Jan 21, 2025NETChief Financial OfficerSale65.0K$7.8M
Jan 6, 2025NETChief Financial OfficerSale15.0K$1.7M
Dec 19, 2024NETChief Financial OfficerSale15.0K$1.7M
Dec 5, 2024NETChief Financial OfficerSale15.0K$1.6M
Nov 20, 2024NETCHIEF FINANCIAL OFFICERSale28.6K$2.7M

Showing the 25 most recent filings of 129. Screen every filing.

Thomas J Seifert insider trading FAQ

Is Thomas J Seifert buying or selling?

Across 129 SEC Form 4 filings, Thomas J Seifert reported 0 open-market purchases totaling $0 and 129 sales totaling $267.0M — a net selling position of $267.0M.

Which companies does Thomas J Seifert file Form 4s for?

Thomas J Seifert has reported insider transactions at 2 companies, most often Cloudflare, Inc. (NET), IPG PHOTONICS CORP (IPGP).

How far back does Thomas J Seifert's filing history go?

Trabud holds Thomas J Seifert's SEC Form 4 filings from Mar 5, 2020 – Jul 17, 2026, sourced directly from SEC EDGAR.

Where does Trabud get Thomas J Seifert's insider trading data?

Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.

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