SEIFERT THOMAS J
SEC insider (Form 3/4/5 filer). CIK 0001473289. Chief Financial Officer at Cloudflare, Inc. (NET) and 1 other issuer. 346 reported Form 4/5 transactions since Sep 2024; latest on Oct 19, 2026. Located in AUSTIN, TX.
Companies SEIFERT THOMAS J has filed insider reports for
- Cloudflare, Inc. (NET): Officer, Chief Financial Officer
- WOLFSPEED, INC. (WOLF): Director
SEIFERT THOMAS J
CIK: 0001473289
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)215 (62.1%)
Position reduction
Option Exercises (M)68 (19.7%)
Derivative conversions
Awards (A)4 (1.2%)
Compensation grants
Other (G, F, J, C, D, …)59 (17.1%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (346 total)
- Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect3.4K shares at avg. $298.32$1.0M - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect502 shares at avg. $303.26$152K - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect3.8K shares at avg. $299.36$1.1M - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect500 shares at avg. $304.15$152K - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect2.6K shares at avg. $300.39$794K - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect598 shares at avg. $301.99$181K - Oct 19, 2026NET
Cloudflare, Inc.
SaleDirect1.1K shares at avg. $297.29$327K - Oct 19, 2026NET
Cloudflare, Inc.
ExerciseDirect12.5K shares at avg. $44.72$559K - Oct 15, 2026NET
Cloudflare, Inc.
Tax PaymentDirect2.9K shares at avg. $316.32$931K - Sep 17, 2026NET
Cloudflare, Inc.
ConversionDirect10K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 19, 2026 |  NET Cloudflare, Inc. | Sale | 3,401 | $298.32 | $1,014,590 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 502 | $303.26 | $152,234 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 3,756 | $299.36 | $1,124,379 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 500 | $304.15 | $152,075 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 2,643 | $300.39 | $793,934 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 598 | $301.99 | $180,593 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Sale | 1,100 | $297.29 | $327,021 | Direct |
| Oct 19, 2026 | NET Cloudflare, Inc. | Exercise | 12,500 | $44.72 | $559,000 | Direct |
| Oct 15, 2026 | NET Cloudflare, Inc. | Tax Payment | 2,944 | $316.32 | $931,246 | Direct |
| Sep 17, 2026 | NET Cloudflare, Inc. | Conversion | 10,000 | - | $0 | Direct |
1-10 of 346 transactions
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