Insider Screener
Real-time Form 4 Filtering Engine
| Filing Date | Trade Date | Ticker | Company Name | Reporting Person | Relationship | Industry (by SEC) | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-19 21:55 | 2026-05-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $200.61 | 10,000 | $2,006,068 | 212,014 | -4.5% |
| 2026-04-17 21:33 | 2026-04-17 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $197.98 | 10,000 | $1,979,757 | 221,681 | -4.3% |
| 2026-03-17 23:27 | 2026-03-17 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $212.30 | 10,341 | $2,195,442 | 224,625 | -4.4% |
| 2026-02-25 03:47 | 2026-02-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $185.04 | 41,557 | $7,689,670 | 85,452 | -32.7% |
| 2026-01-22 01:13 | 2026-01-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $178.37 | 10,000 | $1,783,682 | 137,486 | -6.8% |
| 2025-12-24 00:14 | 2025-12-22 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $201.69 | 10,000 | $2,016,931 | 137,486 | -6.8% |
| 2025-11-22 02:45 | 2025-11-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $194.18 | 41,555 | $8,069,179 | 137,486 | -23.2% |
| 2025-10-21 01:52 | 2025-10-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $211.81 | 10,000 | $2,118,137 | 189,517 | -5.0% |
| 2025-09-23 01:30 | 2025-09-22 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $227.64 | 10,000 | $2,276,444 | 189,517 | -5.0% |
| 2025-08-22 00:45 | 2025-08-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $190.64 | 41,555 | $7,921,854 | 189,517 | -18.0% |
| 2025-07-30 00:49 | 2025-07-25 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | SALE | $200.30 | 60,730 | $12,163,988 | 0 | -100.0% |
| 2025-07-23 02:22 | 2025-07-21 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $199.71 | 44,270 | $8,841,179 | 0 | -100.0% |
| 2025-06-24 00:15 | 2025-06-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $180.76 | 10,000 | $1,807,588 | 241,550 | -4.0% |
| 2025-05-22 23:10 | 2025-05-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $156.78 | 41,556 | $6,515,116 | 241,550 | -14.7% |
| 2025-04-28 23:18 | 2025-04-25 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $120.14 | 10,000 | $1,201,354 | 293,582 | -3.3% |
| 2025-03-21 23:19 | 2025-03-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $120.00 | 10,000 | $1,200,000 | 293,582 | -3.3% |
| 2025-03-07 00:30 | 2025-03-05 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $141.77 | 15,000 | $2,126,489 | 293,582 | -4.9% |
| 2025-02-20 02:14 | 2025-02-19 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $162.07 | 28,635 | $4,640,912 | 293,582 | -8.9% |
| 2025-02-06 02:39 | 2025-02-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $136.63 | 15,000 | $2,049,447 | 252,869 | -5.6% |
| 2025-01-22 00:47 | 2025-01-17 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $119.74 | 65,000 | $7,782,873 | 252,869 | -20.4% |
| 2025-01-07 00:59 | 2025-01-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $113.81 | 15,000 | $1,707,162 | 252,869 | -5.6% |
| 2024-12-20 01:19 | 2024-12-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $112.72 | 15,000 | $1,690,860 | 252,869 | -5.6% |
| 2024-12-06 01:25 | 2024-12-04 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $109.90 | 15,000 | $1,648,496 | 252,869 | -5.6% |
| 2024-11-20 03:14 | 2024-11-19 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $95.03 | 28,635 | $2,721,044 | 252,869 | -10.2% |
| 2024-11-05 01:21 | 2024-11-04 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $86.79 | 15,000 | $1,301,835 | 281,403 | -5.1% |
| 2024-10-21 23:50 | 2024-10-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $90.88 | 15,000 | $1,363,158 | 281,403 | -5.1% |
| 2024-10-05 00:29 | 2024-10-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $79.19 | 15,000 | $1,187,865 | 281,403 | -5.1% |
| 2024-09-20 00:13 | 2024-09-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $78.36 | 15,000 | $1,175,378 | 281,403 | -5.1% |
| 2024-09-05 23:35 | 2024-09-04 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $78.05 | 15,000 | $1,170,819 | 281,403 | -5.1% |
| 2024-08-22 23:12 | 2024-08-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $82.84 | 28,636 | $2,372,117 | 281,403 | -9.2% |
| 2024-08-06 00:30 | 2024-08-02 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $78.71 | 15,000 | $1,180,715 | 309,937 | -4.6% |
| 2024-07-20 00:35 | 2024-07-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $78.89 | 15,000 | $1,183,382 | 309,937 | -4.6% |
| 2024-07-03 23:57 | 2024-07-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $84.97 | 15,000 | $1,274,571 | 309,937 | -4.6% |
| 2024-06-24 23:18 | 2024-06-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $78.47 | 15,000 | $1,176,992 | 309,937 | -4.6% |
| 2024-06-06 23:09 | 2024-06-05 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $69.12 | 15,000 | $1,036,794 | 309,937 | -4.6% |
| 2024-05-21 23:59 | 2024-05-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $75.13 | 28,634 | $2,151,358 | 309,937 | -8.5% |
| 2024-05-06 23:17 | 2024-05-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $73.97 | 15,000 | $1,109,477 | 338,469 | -4.2% |
| 2024-04-20 00:18 | 2024-04-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $87.02 | 15,000 | $1,305,249 | 338,469 | -4.2% |
| 2024-04-04 22:31 | 2024-04-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $94.91 | 15,000 | $1,423,643 | 338,469 | -4.2% |
| 2024-03-19 23:10 | 2024-03-15 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $91.77 | 110,000 | $10,095,019 | 0 | -100.0% |
| 2024-03-06 02:12 | 2024-03-04 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $99.87 | 15,000 | $1,498,088 | 338,469 | -4.2% |
| 2024-02-22 03:52 | 2024-02-20 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; CHIEF FINANCIAL OFFICER | Services-Prepackaged Software | OPT+S | $96.56 | 27,901 | $2,694,073 | 338,469 | -7.6% |
| 2024-02-13 04:10 | 2024-02-09 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $110.11 | 50,000 | $5,505,730 | 366,465 | -12.0% |
| 2024-02-06 01:28 | 2024-02-02 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $81.87 | 15,000 | $1,227,981 | 366,465 | -3.9% |
| 2024-01-20 02:49 | 2024-01-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $77.73 | 15,000 | $1,165,980 | 243,495 | -5.8% |
| 2024-01-04 03:30 | 2024-01-03 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $76.80 | 15,000 | $1,152,011 | 243,495 | -5.8% |
| 2023-12-20 00:32 | 2023-12-18 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $84.86 | 15,000 | $1,272,851 | 243,495 | -5.8% |
| 2023-12-15 00:51 | 2023-12-13 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $80.21 | 34,329 | $2,753,546 | 243,495 | -12.4% |
| 2023-12-09 00:18 | 2023-12-06 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $80.00 | 400 | $32,000 | 243,495 | -0.2% |
| 2023-12-06 02:58 | 2023-12-04 | NET | Cloudflare, Inc. | SEIFERT THOMAS J | Officer; Chief Financial Officer | Services-Prepackaged Software | OPT+S | $79.70 | 30,271 | $2,412,690 | 243,495 | -11.1% |
Strategic Signal Filtering
Our screener allows you to cut through the noise of routine stock grants and small trades. By focusing on high-value transactions from C-suite executives (CEO/CFO), you can identify where the "Smart Money" is being deployed with maximum conviction.
Investing Without Illusions
Insider data is not a magic wand, but it is the most honest indicator available. While insiders sell for many reasons (taxes, personal needs), they generally buy for only one: they believe the stock price is undervalued. We provide the tools to track these skin-in-the-game moves.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.