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SEIFERT THOMAS J
Chief Financial OfficerCIK 0001473289
Total Volume
$79.3M
16 filings
Purchases
$0
0 buy txns
Sales
$62.1M
114 sell txns
Net Activity
-$62.1M
net sold
Largest Purchase
No open-market purchases in the recent filings.
Profile
- Filings
- 16
- Buy transactions
- 0
- Sell transactions
- 114
- Companies
- 1
- Active
- 2025–2026
Across 16 filings between 2025–2026, SEIFERT THOMAS J, Chief Financial Officer, has disclosed $79.3M in transactions — all concentrated in Cloudflare, Inc. (NET). Their disclosed trades are heavily weighted toward selling — $0 in buys and $62.1M in sells. Data is sourced from official SEC Form 3, 4, and 5 filings.
Associated Companies
Trading History
16 loaded
| Jul 17 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.8M |
| Jun 17 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.3M |
| May 19 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.0M |
| Apr 17 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.0M |
| Mar 17 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.2M |
| Feb 24 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $7.7M |
| Feb 18 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Tax withheld | $4.0M |
| Jan 21 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $1.8M |
| Nov 21 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $8.1M |
| Nov 17 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Tax withheld | $4.3M |
| Oct 20 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.1M |
| Sep 22 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $2.3M |
| Aug 21 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $7.9M |
| Aug 19 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Tax withheld | $4.0M |
| Jul 29 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $12.2M |
| Jul 22 | NET Cloudflare, Inc. | SEIFERT THOMAS J | Chief Financial Officer | Sell | $8.8M |
16 filings