Get API key
Reporting owner · Q3 2026 · CIK 1473289

Seifert Thomas J: insider trades.

Seifert Thomas J reported 38 non-derivative transactions on 6 SEC ownership filings in Q3 2026: 0 open-market purchases and 31 sales ($25.7M), across 1 company.

Transactions
38
Purchases (P)
0
Sales (S)
31
Companies
1
Name as filed
SEIFERT THOMAS J

Companies

CompanyRelationshipTransactions
Cloudflare, Inc. (NET)Officer · Chief Financial Officer38

Transactions

38 non-derivative rows. Shares and prices as filed.
DateCompanyCodeSharesPriceOwned afterFiling
2026-09-17Cloudflare, Inc.S600$335.32108,002Form 4
2026-09-17Cloudflare, Inc.S100$336.51107,902Form 4
2026-09-17Cloudflare, Inc.C10,000—117,902Form 4
2026-09-17Cloudflare, Inc.S100$318.9117,802Form 4
2026-09-17Cloudflare, Inc.S100$320.89117,702Form 4
2026-09-17Cloudflare, Inc.S100$326.56117,602Form 4
2026-09-17Cloudflare, Inc.S1,868$334.59108,602Form 4
2026-09-17Cloudflare, Inc.S700$329.37116,602Form 4
2026-09-17Cloudflare, Inc.S700$330.23115,902Form 4
2026-09-17Cloudflare, Inc.S1,196$331.59114,706Form 4
2026-09-17Cloudflare, Inc.S1,604$332.5113,102Form 4
2026-09-17Cloudflare, Inc.S2,632$333.62110,470Form 4
2026-09-17Cloudflare, Inc.S300$328.04117,302Form 4
2026-09-15Cloudflare, Inc.F2,944$327.23107,902Form 4
2026-08-17Cloudflare, Inc.S900$305.25119,946Form 4
2026-08-17Cloudflare, Inc.S2,944$306.24117,002Form 4
2026-08-17Cloudflare, Inc.S2,456$307.29114,546Form 4
2026-08-17Cloudflare, Inc.S3,100$308.23111,446Form 4
2026-08-17Cloudflare, Inc.S300$309.07111,146Form 4
2026-08-17Cloudflare, Inc.S200$312.32110,946Form 4
2026-08-17Cloudflare, Inc.S100$314.61110,846Form 4
2026-08-17Cloudflare, Inc.C10,000—120,846Form 4
2026-08-15Cloudflare, Inc.F2,944$315.78110,846Form 4
2026-08-04Cloudflare, Inc.S1,139$301113,790Form 4
2026-08-04Cloudflare, Inc.S53,861$300.28114,929Form 4
2026-08-04Cloudflare, Inc.M55,000$44.72168,790Form 4
2026-07-17Cloudflare, Inc.S500$274.6122,690Form 4
2026-07-17Cloudflare, Inc.S200$266.19123,590Form 4
2026-07-17Cloudflare, Inc.S100$267.76123,490Form 4
2026-07-17Cloudflare, Inc.C10,000—123,790Form 4
2026-07-17Cloudflare, Inc.S300$270.5123,190Form 4
2026-07-17Cloudflare, Inc.S800$279.91114,090Form 4
2026-07-17Cloudflare, Inc.S300$281.29113,790Form 4
2026-07-17Cloudflare, Inc.S1,559$275.79121,131Form 4
2026-07-17Cloudflare, Inc.S1,741$276.63119,390Form 4
2026-07-17Cloudflare, Inc.S3,299$277.68116,091Form 4
2026-07-17Cloudflare, Inc.S1,201$278.76114,890Form 4
2026-07-15Cloudflare, Inc.F2,943$281.75113,790Form 4

Questions

What stock did Seifert Thomas J buy or sell?

Seifert Thomas J reported 38 non-derivative transactions on 6 SEC ownership filings in Q3 2026: 0 open-market purchases and 31 sales ($25.7M), across 1 company.

Is Seifert Thomas J the same person as other filers with this name?

This page covers SEC CIK 1473289 only. The SEC assigns each reporting owner a CIK, and people with the same name have different CIKs.

Source: SEC Insider Transactions Data Sets, Q3 2026. Reported as filed; we do not assess intent, performance or compliance. All filings for this CIK on SEC.gov.

Plain-text version for agents and LLMs: /insiders/seifert-thomas-j-1473289.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.