Cloudflare (NET) CFO Seifert sold 10,000 shares for $1.78M at an average $178.37 under a 10b5-1 plan
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Insider transactions reported
Thomas J Seifert (Chief Financial Officer at Cloudflare Inc., NET) reported that they sold 10,000 shares for $1.78M at an average $178.37, and acquired 10,000 shares on Jan 20, 2026. After these transactions the filing shows 137,486 shares held directly.
- Reporting person
- Seifert Thomas J
- Role
- Chief Financial Officer
| Date | Type | Security | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|
| Jan 20, 2026 | Conversion of a derivative (C) | Class A Common Stock1 | +10,000 | - | - | 147,486 direct |
| Jan 20, 2026 | Open-market sale (S) | Class A Common Stock2, 3, 4, ... | -10,000 | avg $178.37 | $1.78M | 137,486 direct |
Options and other derivatives
| Date | Type | Security | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|
| Jan 20, 2026 | Exercise or conversion of a derivative (M) | Employee Stock Option (right to buy)On 10,000 Class B Common Stock1, 9 | -10,000 | - | - | 80,341 direct |
| Jan 20, 2026 | Exercise or conversion of a derivative (M) | Class B Common StockOn 10,000 Class A Common Stock1 | +10,000 | - | - | 18,925 direct |
| Jan 20, 2026 | Conversion of a derivative (C) | Class B Common StockOn 10,000 Class A Common Stock1 | -10,000 | - | - | 8,925 direct |
Holdings before and after
- Employee Stock Option (right to buy): 90,341 to 80,341 direct
Footnotes from the filing
- 1. Each share of Class B Common Stock is convertible at any time into Class A Common Stock on a one-to-one basis at the reporting person's election and has no expiration date.
- 2. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 26, 2024.
- 3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.70 to $176.58, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) through (8) to this Form 4.
- 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.71 to $177.70, inclusive.
- 9. Shares subject to the option are fully vested and immediately exercisable.
- 10. The shares are held of record by Center Court Partners Ltd., for which the reporting person serves as a partner.
- 11. The shares are held of record by Center Court 2020 Trust 1 UA 12/11/20, for which the reporting person serves as trustee.
Transaction codes in this filing
- Open-market sale:
- Code S marks a sale in the open market or a private deal. The insider received cash for these securities.
- Conversion of a derivative:
- Code C marks the conversion of a derivative, such as preferred stock or units, into another security.
FAQ
What did Seifert report in this NET Form 4?
Thomas J Seifert (Chief Financial Officer at Cloudflare Inc., NET) reported that they sold 10,000 shares for $1.78M at an average $178.37, and acquired 10,000 shares on Jan 20, 2026. After these transactions the filing shows 137,486 shares held directly.
How many NET shares does Seifert hold after this filing?
The filing shows 137,486 shares held directly after the reported transactions. Form 4 reports only the positions it lists, so this may not be every holding.
Was this NET insider sale made under a 10b5-1 plan?
The filing's footnotes mention a Rule 10b5-1 trading plan. Such a plan sets the terms of future trades in advance.
What does transaction code S mean on an SEC Form 4?
Code S marks a sale in the open market or a private deal. The insider received cash for these securities.
Historical context for NET
Across the 11 sessions after earlier NET headlines, the stock closed higher 5 times and lower 6 times, with a median move of 2.3% in either direction. This shows timing only: many things move a stock in a session, and these figures do not show that any headline caused a move.
| Session | Earlier headline | NET | SPY |
|---|---|---|---|
| Jan 16, 2026 | Cloudflare Acquires Astro to Accelerate the Future of High-Performance Web Developmentand 1 other headline that session | +0.0% | -0.1% |
| Jan 15, 2026 | Cloudflare Strengthens Content Offering to AI Companies with Acquisition of Human Native | -2.3% | +0.3% |
| Jan 14, 2026 | New Cloudflare Report Warns of a 'Technical Glass Ceiling' Stifling AI Growth and Weakening Cybersecurity | -0.2% | -0.5% |
| Dec 19, 2025 | Cloudflare Publishes Fifth Annual Impact Report | +1.0% | +0.6% |
| Dec 17, 2025 | Cloudflare and JD Cloud Announce Partnership to Accelerate AI Inference Deployment and Scaling for Global Developers | -3.1% | -1.1% |
| Dec 15, 2025 | Cloudflare Publishes Top Internet Trends for 2025 | -2.8% | -0.2% |
Earlier insider filings at NET
- Jan 16, 2026President and Board Co-Chair Zatlyn Michelle converted options into 76,923 shares and sold $14,504,407 worth of shares (76,923 units at $188.56) (SEC Form 4)
- Jan 9, 2026SEC Form 4 filed by CEO & Board Co-Chair Prince Matthew
- Jan 9, 2026CEO & Board Co-Chair Prince Matthew converted options into 157,152 shares and sold $30,701,127 worth of shares (157,152 units at $195.36) (SEC Form 4)
- Jan 6, 2026Director Ledbetter Carl sold $1,216,136 worth of shares (6,134 units at $198.26) (SEC Form 4)
- Jan 6, 2026Director Graham-Cumming John exercised 2,520 shares at a strike of $44.72 and sold $504,676 worth of shares (2,520 units at $200.27) (SEC Form 4)
Keep researching NET
- NET insider tradesEvery buy and sale reported by Cloudflare Inc. officers, directors and large holders.
- What is Form 4?The SEC filing that reports a change in an insider's holdings, such as a purchase, sale, option exercise or grant, generally within two business days.
- Form 4 explainedForm 4 is the SEC filing that discloses when officers, directors and 10% owners buy or sell company stock, due within 2 business days. Learn every key field and code.
- Insider trading trackerThe latest insider buys and sales across every stock.
- NET earnings historyPast Cloudflare Inc. earnings releases, newest first.
- NET financial statementsRevenue, profit, cash flow and balance sheet from Cloudflare Inc.'s SEC filings.
Quantisnow market dataNYSE
NET
Cloudflare Inc.
- Market cap
- 30-day
- Sector
- Technology
- Industry
- Computer Software: Prepackaged Software
- Listed since
- 2019
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