How to track insider trades for free
Every insider filing on this site comes from a public register that you can search for free. In the US that is EDGAR at the SEC. In Europe each country has its own regulator and its own register, with its own search, language and export.
The registers at a glance
| Country | Register | What you get |
|---|---|---|
| United States | SEC EDGAR | Every Form 3, 4 and 5 as filed, searchable by company or person; quarterly data sets to download |
| Netherlands | AFM register | A list of all notifications with a CSV or XML export; price and volume on each notification's own page |
| Germany | BaFin database | Search by company, ISIN, person or period, with a CSV export; a notification stays in the database for 12 months |
| Belgium | FSMA transaction search | Search by company and publication date; a page per transaction |
| Sweden | FI insider register | Search by company, manager, trade date or publication date; results download as a CSV file |
| Spain | CNMV search | Search by date; the details of each notification in an attached document |
United States: EDGAR
Insiders file their Forms 3, 4 and 5 on EDGAR themselves, and EDGAR shows each filing, in most cases within minutes. A Form 4 is due within two business days of the trade. EDGAR full-text search finds filings by company, person or form type. For bulk work the SEC publishes insider transactions data sets: the Forms 3, 4 and 5 of each quarter as one ZIP file, back to 2006. The codes on the forms are in Form 4 transaction codes explained.
The EU: one rule, five registers
In the EU, managers report under MAR Article 19 within three business days, and the company publishes within two business days of receiving the notification. Where the regulator keeps a public register, you find it there:
- Netherlands: the AFM publishes each notification in its register, in Dutch. The Dutch guide explains the fields.
- Germany: BaFin adds a notification once its own procedure has finished, which can take days or weeks, and removes it 12 months after first publication. The company register (Unternehmensregister) keeps the publications. See the German guide.
- Belgium: the FSMA publishes a trade after the company has confirmed it, so a filing can reach the register days after the trade (Belgian guide).
- Sweden: FI publishes a notification as soon as it arrives, without checking it first, and may limit how many searches one user makes (Swedish guide).
- Spain: the CNMV publishes the notifications of managers and the company uses the same channel (Spanish guide).
What free takes from you
The registers cost nothing, but each works its own way. You search six sites, each with its own fields, dates and language. A company has no shared identifier across them, so you match the names yourself. The German register forgets after a year. To follow a company over time, you keep your own copy.
What this site brings together
Insider Trades puts the filings of the five European registers and US Form 4 in one list, with a link to the original filing on every row. Other public sources sit beside it, such as Congress trades, corporate lobbying and short positions. Without a subscription you see the five newest rows of each list; the registers above stay free in full.
Checked against the regulation and the regulator’s own pages on Oct 31, 2026. This guide explains the rules; it is not legal or investment advice.
More guides
- EUMAR art. 19What is a MAR Article 19 notification?How directors' dealings are reported in the EU under the Market Abuse Regulation: who must report, the deadline, the threshold, what a notification contains and where to find them.
- USSEC Form 4How to read an SEC Form 4A field-by-field guide to the Form 4 that US company insiders file with the SEC: who files it, the two-day deadline, the transaction codes, and the 10b5-1 checkbox.
- USSTOCK ActWhat members of Congress must disclose about their tradesHow the STOCK Act makes members of the US Congress report their stock trades: the 30- and 45-day deadlines, the $1,000 threshold, the amount ranges, and what is left out.
- EUNetherlands · AFMWhen does an insider have to report a trade in the Netherlands?Who reports trades to the Dutch AFM, the three-day deadline, the €20,000 threshold, the extra Wft duty for board members, and where you find the filings.
- EUGermany · BaFinWhen does an insider have to report a trade in Germany?Directors' dealings in Germany: who reports to BaFin, the three-day deadline, the €50,000 threshold that applies since 1 January 2026, and where the filings appear.
- EUBelgium · FSMAWhen does an insider have to report a trade in Belgium?Managers' transactions in Belgium: who reports to the FSMA through eMT, the three-day deadline, the €20,000 threshold, and why the issuer has to confirm a filing first.
- EUSweden · FIWhen does an insider have to report a trade in Sweden?Insider trades in Sweden: who reports to Finansinspektionen, the three-day deadline, the €20,000 threshold, and how the insider register (insynsregistret) works.
- EUSpain · CNMVWhen does an insider have to report a trade in Spain?Managers' transactions in Spain: who reports to the CNMV, the three-day deadline, the €20,000 threshold in Article 230 of the Securities Market Act, and where the filings appear.
- EUMAR art. 19(11)What is a closed period?The 30 days before a listed EU company publishes its results, when its managers may not trade its shares: the rule, the exceptions, the Listing Act changes and the US blackout.
- EUMAR art. 3What is a PDMR?Who counts as a person discharging managerial responsibilities (PDMR) under EU law, who is closely associated with them, and why it matters for reporting trades.
- USSEC Section 16Form 3, 4 and 5: what's the difference?The three SEC forms that US company insiders file: Form 3 when they become an insider, Form 4 after a trade, Form 5 once a year. Who files each one, and by when.
- USSEC Rule 10b5-1What is a 10b5-1 plan?How US insiders trade through a pre-arranged plan under SEC Rule 10b5-1: the rule, the 2022 changes (cooling-off, certification, overlapping plans) and the Form 4 checkbox.
- USSEC Form 13FHow to read a 13F filingWho files Form 13F with the SEC, by when, and what it shows: the long positions of large US fund managers at the end of each quarter, without shorts or cash.
- USLobbying Disclosure ActHow does US lobbying disclosure work?How the US Lobbying Disclosure Act works: registration on Form LD-1, quarterly LD-2 reports with amounts rounded to $10,000, and the twice-yearly LD-203 contribution reports.
- USOGE Form 278What must the President and senior officials disclose?The OGE Form 278e financial disclosure of the US President, Vice President and senior officials, and the 278-T report of trades within 30 or 45 days.
- EUShort Selling RegulationShort positions in Europe: what is the 0.5% rule?How the EU Short Selling Regulation works: net short positions go to the regulator from 0.1% of a company's shares and become public from 0.5%, with each 0.1% step above.
- EU/USMAR vs Section 16Insider reporting in the EU vs the US: what's different?How EU and US rules on reporting insider trades compare: who reports, the three-day and two-day deadlines, the thresholds, what a filing shows and who publishes it.
- EU/USMAR art. 14 · Rule 10b-5Directors' dealings vs insider trading: what is legal?The difference between a reported directors' dealing and illegal insider trading under EU law (MAR Articles 7, 8 and 14) and US law (Rule 10b-5), with the penalties.
- EU/USLate filingsHow often are insider filings late?How many Form 4 filings, Congress trade reports and EU insider notifications arrive after the legal deadline, per year, counted from the registers on this site.
- EUNetherlands · AFMHow many insider trades are reported in the Netherlands?Managers' trades reported to the Dutch AFM, counted per year and per sector: entries in both AFM registers, companies, and open-market buys and sales.
- USSTOCK ActWhich members of Congress trade the most?Members of the US Congress ranked by the number of trades they reported for the last full calendar year, with purchases, sales and the amount ranges as filed.
- EU/USInsider salesWhy do insiders sell stock?The common reasons company insiders sell their own shares: pay in stock, tax, spreading risk, cash for a house, a pre-set 10b5-1 plan. And what research found about sales.
- USSEC Form 4Form 4 transaction codes explainedEvery transaction code on an SEC Form 4, from P and S to A, M, F, G and J, with its meaning from the SEC's own instructions, and which codes are trades at the market.
- EU/USInsider purchasesWhat is cluster buying?Cluster buying: several insiders of one company buying its shares within a short period. How this site counts a cluster: three buyers within 90 days, by filing date.
- EU/USResearchDo insider purchases predict stock returns?What studies of US, UK and German filings found about share returns after insiders buy, from Lakonishok and Lee to Cohen, Malloy and Pomorski, and the limits of those findings.
- USSTOCK ActCan members of Congress trade stocks?Yes: members of the US Congress may trade stocks, but must report each trade within 45 days under the STOCK Act. The late fee, and the bills to ban trading as of 31 October 2026.
- USResearchDo politicians beat the market?What studies found about the stock returns of US senators and representatives, from Ziobrowski in 2004 to studies of trades after the STOCK Act, and why the results differ.
- USOGE Form 278What stocks does Trump own?Where to find what President Trump owns: the annual OGE Form 278e with assets in value ranges, the 278-T reports of trades, and what neither form shows.
- EUMAR art. 19Biggest insider purchases in Europe this yearThe largest open-market share purchases by company insiders in the Netherlands, Germany, Belgium, Sweden and Spain this year, ranked by amount in euros.
- EUMAR art. 19(11)When do insiders buy? Purchases by monthOpen-market purchases and sales by company insiders in the Netherlands, Sweden and Spain, counted per calendar month over all full years, and how closed periods fit in.
- USSEC Form 13FWhat is Berkshire Hathaway buying?Berkshire Hathaway's largest US stock holdings from its latest Form 13F, how many positions grew, shrank, appeared or disappeared, and what the filing leaves out.
- EU/USTransparency DirectiveMajor shareholdings in the EU: the 3% and 5% ruleWhen an investor in an EU listed company must report its stake: the 5% threshold of the Transparency Directive, lower national thresholds, the deadlines, and the US Schedule 13D.
- EU/USMCPInsider trading data in Claude and ChatGPT (MCP)Connect InsiderRadar to Claude or ChatGPT over MCP: the address, the sign-in steps, and the six read-only tools for insider, Congress, 13F and lobbying filings.