Latest filingAug 21, 2026Most recent Form 4
NET
Cloudflare, Inc.
NYSETechnologyServices-Prepackaged Software
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$3.47B53 sells
Net open-market-$3.47B5 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period78transactions
- S · Open-market sells · dominant53 · 68%
- M · Option exercise12 · 15%
- C · Code C8 · 10%
- F · Tax withholding5 · 6%
Activity by reported role
A joint filing can contribute to multiple roles79transactions
- PRES · dominant39 · 49%
- CAO15 · 19%
- Chief financial officer12 · 15%
- CLO11 · 14%
- Chief executive officer1 · 1%
- CHAIR1 · 1%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (5)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeZatlyn MichelleClass A Common Stock · Indirect · See footnote
81,704Aug 21, 2026
Riley JanelClass A Common Stock · Direct
41,547Aug 18, 2026
Starzak Alissa MichelleClass A Common Stock · Direct
112,082Aug 18, 2026
Seifert Thomas JClass A Common Stock · Direct
110,846Aug 17, 2026
Zatlyn MichelleClass B Common Stock · Direct
33,003Aug 21, 2026
Zatlyn MichelleEmployee Stock Option (right to buy) · Direct
1,089,099Aug 21, 2026
Seifert Thomas JClass B Common Stock · Direct
18,925Aug 17, 2026
Zatlyn MichelleClass A Common Stock · Direct
315,300Aug 15, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- SJ-$1.9M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
NET transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| NET | SEIFERT THOMAS J | CFO | sale10b5-1 | 2.45k | -$75.4M | S | −2.2% | 08/19 | 08/17 | |
| NET | SEIFERT THOMAS J | CFO | sale10b5-1 | 2.94k | -$90.1M | S | −2.2% | 08/19 | 08/17 | |
| NET | SEIFERT THOMAS J | CFO | sale10b5-1 | 900 | -$27.4M | S | −2.2% | 08/19 | 08/17 |
Cloudflare, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Cloudflare, Inc.?
Zatlyn Michelle, Starzak Alissa Michelle, Riley Janel, SEIFERT THOMAS J, Prince Matthew.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Zatlyn Michelle reported a sale on Aug 21, 2026 valued at $2.53M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $34,747,868.42. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.