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TS

Thomas J. Seifert

Insider · Chief Financial Officer · NET

Thomas J. Seifert files insider transactions with the SEC as a chief financial officer of Cloudflare (NET). We hold 9 disclosed purchases and sales filed since 16 October 2009, 4 of them in the last 90 days.

  • Files forNET
  • Disclosed buys and sells9 in all, 4 in the last 90 days
  • Last disclosure19 August 2026

Positions held

5 posts we hold — a term names its own dates; a run of filings only says when they filed
  • Filed 11 November 2002 — 17 August 2026Chief Financial Officer · Cloudflare (NET)1,235 Form 4 lines · source: SEC Form 4
  • Filed 5 December 2024 — 3 February 2025Director · Wolfspeed (WOLF)2 Form 4 lines · source: SEC Form 4
  • Filed 3 June 2014 — 24 May 2022Director · Ipg Photonics (IPGP)38 Form 4 lines · source: SEC Form 4
  • Filed 10 June 2014 — 10 June 2016EVP & Chief Financial Officer · Symantec (SYMC)9 Form 4 lines · source: SEC Form 4
  • Filed 15 October 2009 — 15 June 2012SVP, CFO · Advanced Micro Devices (AMD)26 Form 4 lines · source: SEC Form 4

Everything they disclosed

120 entries, newest first — one per disclosure report, one per Form 4 line

Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.