SEC Insider Feed: Track U.S. Public Company Insider Trading via Real-Time API

Can you find out instantly when CEOs start aggressively selling their own company’s stock? On May 20, 2026, we launched SEC Insider Feed — a real-time API service that captures insider trading data for U.S. publicly listed companies. This article explains what this API is, what it can do, and key insights uncovered using real-world data. What is insider trading data—and why does it matter? U.S. securities law requires corporate insiders—such as CEOs, CFOs, directors, and shareholders holding more than 10% of outstanding shares—to file Form 4 with the SEC within two business days after buying or selling their company’s stock. These filings are public, but they’re scattered across the SEC’s website in raw, unwieldy formats that are difficult to use directly. Insider trading activity is widely regarded as one of the strongest market signals: ・ A CEO buying shares out-of-pocket → A bullish signal far more reliable than any analyst report ・ Multiple executives selling simultaneously → A collective “rats leaving the sinking ship” warning ・ Heavy selling by hedge funds → An early indicator of shifting institutional confidence The problem? These data reside in the SEC’s EDGAR system—disorganized, fragmented, and significantly delayed. If you want to know who sold today, you might have to scroll through dozens of web pages. SEC Insider Feed solves exactly this problem. What is SEC Insider Feed? A real-time API service that scrapes SEC Form 4 filings at five-minute intervals, returning structured JSON. Core capabilities: ・ 🔄 Real-time capture — Polls SEC RSS feeds every 5 minutes; new filings are ingested and stored within seconds ・ 📊 Structured data — Includes company name, insider identity, transaction code, number of shares, dollar value—ready to use out of the box ・ 🔍 Flexible querying — Filter by ticker symbol, insider name, transaction type, or date range ・ 📡 Real-time push — Server-Sent Events (SSE) streaming interface delivers new filings instantly to your application ・ 🤖 AI-ready — Compatible with MCP integration, enabling natural-language queries Tech stack: Python 3.12 / FastAPI / SQLAlchemy 2.0 async / PostgreSQL 15 / Deployed on Railway API endpoint: https://sec-insider-api.up.railway.app Quick Start 1. Retrieve the latest insider trades curl -H "X-API-Key: YOUR_API_KEY" \ 'https://sec-insider-api.up.railway.app/v1/filings?per_page=5' 2. Query insider trades for a specific stock curl -H "X-API-Key: YOUR_API_KEY" \ 'https://sec-insider-api.up.railway.app/v1/tickers/NVDA'

Warning for Next Year’s Performance? U.S. Insiders’ Stock Sales Hit a Two-Decade High for a Single Quarter

Recently, insider selling by executives of U.S.-listed companies has surged so sharply that it has drawn concern from financial media. According to a recent Financial Times report, a record number of U.S. corporate executives—from Goldman Sachs to Tesla, and even President-elect Trump’s own media group—are selling shares of their own companies, capitalizing on the post-election rally in U.S. equities. Data from VerityData shows that insider selling activity among U.S. publicly listed companies has reached the highest quarterly level in twenty years. Here, “selling transactions” refer to sales by executives of constituent stocks in the Wilshire 5000—the broadest U.S. equity index covering actively traded U.S. stocks weighted by market capitalization—including both one-off profit-taking trades and scheduled sales triggered automatically when share prices hit pre-set levels under executives’ trading plans. Moreover, in Q4 of this year, the ratio of insider sellers to buyers among S&P 500 component companies stood at 23.7:1—the highest since 2004, when the U.S. first mandated public disclosure of insider trading activity. large_image?... There are many reasons why corporate insiders sell stock—and most are unrelated to the company’s underlying prospects. Therefore, record-high insider selling does not necessarily signal imminent danger. However, given recent strong returns, elevated valuations, rising leverage, and an overall highly speculative environment, this wave of insider selling sends another cautionary signal for U.S. equities as a whole—suggesting that the market’s performance next year may fall short of expectations. On the relationship between insider trading and market performance, Ben Silverman, Research Director at VerityData, commented: “Generally speaking, in terms of predictive power, insider selling tends to precede market downturns by roughly two to three quarters.”

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Oil-Dri Corporation director Amy Ryan sold $86,680 worth of stock, reducing her holdings by 28%, causing a 7% share price drop despite strong quarterly earnings and a new dividend declaration.

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